HYDROLOGIC DATA REPORT VOLUME II - SURFACE WATER AND STREAMFLOW DATA WATER YEAR 2021 Revision 1, December 28, 2021 Cruff Wash Streamgage (Station 50237), south of Agua Caliente Road and west of Old US 80. Photo Date: August 17, 2021. PREFACE This publication presents the surface water data collected by the Flood Control District of Maricopa County's automated water-level gage network. This telemetered network is located primarily throughout Maricopa County, Arizona with additional gages in Yavapai, Pinal, Yuma, and La Paz Counties. This is the 28th annual water data report published by the District. Annual reports are available for Water Years 1994 – 2021. The surface water data contained in this report were collected, compiled and edited by the Flood Warning Branch of the Flood Control District. Data include mean daily, total, maximum, and minimum discharges at the flow sites; mean daily, maximum, and minimum pool levels at the storage locations; and mean daily, maximum, and minimum volumes stored at the storage locations. Additional graphics are provided for the user to help put the data in context with historic records at the gage. Flood flow frequency data are computed for stations with sufficient record (> 11 years of non-zero flow.) Disclaimers: 1. Flood flow frequency graphics, whether computed in-house or cited from FEMA floodplain studies, are provided for informational purposes only and should not be considered for regulatory purposes. 2. The information contained herein is as accurate and complete as possible within the limitations of real-time data collection technology currently available. Wherever possible, notes have been included to identify questionable data. Reliance upon the accuracy, reliability, and authority of this information is solely the responsibility of the user. 3. Mention of any products, companies, or specific brand names in this report does not constitute endorsement of those companies or products. Revisions to any of these data for any reason will be published in the following years’ reports in an appendix to the report. Printed copies of this report may be requested and purchased from: Flood Control District of Maricopa County 2801 W. Durango Street Phoenix, Arizona 85009 (602) 506-8701 Or downloaded from: https://www.maricopa.gov/759/Publications ii TABLE OF CONTENTS Preface …………………………………………………………………………………….. ii Introduction ……………………………………………..……………………………… iv Data Collection ……………………………………………………………………….. v Definition of Terms …………………………………………………………………. ix – xii Station Location Map ………………………………………………………………. xiii New Installations in Water Year 2021 …………………………………….. xiv Revisions to Previous Report……………………………………………………. xiv Station Table ………………………………………………………………………….. xv – xix Summary of Significant Streamflow ……………………………………….. xx Station Data Pages …………………………………………………………………. 1 - 958 iii INTRODUCTION The Flood Control District of Maricopa County (FCDMC or District) collects a large amount of data pertaining to surface water runoff in and around Maricopa County. Stations report data to the main database at least 2 times daily, even if the data is zero (no flow.) During runoff events, data are transmitted to the database more frequently, as water levels rise and fall. The District has changed the stations’ data transmit protocol from ALERT1 to ALERT2. Though all streamflow stations have been upgraded to the new ALERT2 protocol, most of the stations installed prior to WY2015 remained as ALERT1 ID format until Water Year 2020. Streamgage IDs were all changed from ALERT1 to ALERT2 ID format in the spring of 2020. The District makes its data available to the public in several useful ways. This annual report is but one manner. Additionally, current and raw/analyzed data are available in real-time from the District’s flood warning web site. Historic data are also available from individual stream or dam/impoundment web pages. This report includes records on discharge at stream gages and at flood control storage structures. The count of sensors and stations is: Table 1: Station / Sensor Distribution Total Stations reported in this Report Total Sensors deployed Sensors on Streams Sensors on Impoundments Stage only sites Sites with multiple water-level sensors Status Sensors 206 216 136 70 7 3 5 Stream and impoundment gages are installed for various needs. For District owned channels, dams, and basins, ALERT gages are placed to monitor flow in channels, and impoundment behind dams to satisfy regulatory requirements. Additional stations are installed in response to local agency requests, current or future flood control project needs, public safety needs, and elsewhere as needed. iv DATA COLLECTION This is the 28th annual surface water report published by the District. Prior to water year 1994, surface water data collected by the FCDMC ALERT System were not quality controlled, and therefore, not published. Furthermore, remote sites did not send zero flow information and only transmitted during runoff events. Nevertheless, limited data are available prior to water year 1994 for stations that existed before October 1, 1993. Unfortunately, there is no available data for dates prior to October 1, 1987, even if the station existed prior to this date. The data are collected as a depth of flow in feet (aka stage). The discharge and/or volume is then obtained by applying the stage to a rating curve of stage versus discharge in cubic feet per second (cfs), or stage versus volume in acre-feet (ac-ft). The discharge rating curves have been developed at stream gages by using field surveyed cross sections for use in an HECRAS step-backwater computer model to obtain a range of stage versus discharge points to be plotted on a curve. These stepbackwater ratings are refined whenever possible using direct and/or indirect measurements made at or near the gage site. For flood control storage structures, discharge ratings were obtained in one of two ways. First, the design ratings may be used. In most cases however, the discharge rating curves were developed by application of the Federal Highway Administration’s HY-8 computer model for culvert flow and U.S. Geological Survey methods for weir flow over the uncontrolled emergency spillways. The storage rating curves were obtained from published As-Built or construction plans or developed from digital elevation data. Daily mean discharges are computed by applying the daily mean stages (gage heights) to the stage-discharge curves or tables. A similar computation is done for storage facility volume. The minimum and maximum values are based on instantaneous discharge or volume readings and the volumes for discharge stations are based on accumulations of daily means. All data in this report have been reviewed and edited to provide the most accurate data possible. A blank or blanks, represented with ---, within the data set is an indication that data were lost either due to hardware, software, or radio problems, or that the gage had not yet been installed. Where possible, these data are flagged with footnotes describing the time the gage was down. In the event that published records require revision, revisions are printed in later reports. Listed in the heading for each gage where records have been revised are all the reports in which revisions have been published for the station and the water years to which the revisions apply (e.g. WY1999: WY1994-95 means that the data for Water Years 1994-1995 were revised in the report for Water Year 1999). Revisions will be published in an appendix to the annual report. v Several streamflow gages are operated cooperatively between the FCDMC and the United States Geological Survey (USGS). There are several USGS coorperative sites that also house a District ALERT gage. Additionally, there are several continuous USGS gages that do not have a District ALERT gage at the USGS site. Also as part of the cooperative agreement, the USGS maintains a number of peak-only stations (noncontinuous) that only report an annual maximum. Tables 2 and 3 on the following pages show the USGS gages, along with any associated District gage as well. vi Table 2: USGS Continuous Stations, WY 2021 USGS Station Name USGS Station ID Indian Bend Wash at Curry Road nr Tempe 09512162 Location Lat/Long DD MM SS 33 26 25 / 111 54 52 FCD Gage No Salt River at Priest Drive nr Tempe 09512165 33 26 22 / 111 57 37 Yes, ID #67307 Cave Creek below Cottonwood Creek 09512280 33 53 14 / 111 57 12 Yes, ID #20707 New River near Rock Springs 09513780 33 58 27 / 112 05 54 No Skunk Creek near Phoenix 09513860 33 43 45 / 112 07 09 Yes, ID #65807 Gila River at Estrella Parkway nr Goodyear 09514100 33 23 15 / 112 23 30 Yes, ID #83807 Hassayampa River near Morristown 09516500 33 53 06 / 112 39 41 Yes, ID #45507 Hassayampa River near Arlington 09517000 33 20 50 / 112 43 30 No Centennial Wash at SPRR near Arlington 09517490 33 18 37 / 112 52 52 Yes, ID #24707 Table 3: USGS Annual Peak Stations, WY2021 USGS Station Name Vekol Wash at I-8 09488650 Location Lat/Long DD MM SS 32 50 30 / 112 15 04 Tortilla Creek at Tortilla Flat 09501300 33 31 38 / 111 23 13 No Camp Creek near Sunflower 09510170 33 45 35 / 111 29 44 No Rock Creek near Sunflower 09510180 33 43 49 / 111 30 28 No Indian Bend Wash at Shea Boulevard 09512090 33 35 05 / 111 58 10 Yes, ID #59507 Salt River Tributary in South Mountain Park 09512200 33 20 49 / 112 05 03 No Agua Fria River Tributary #2, near Rock Springs 09512700 34 02 00 / 112 08 42 No Deadman Wash near New River 09513820 33 50 30 / 112 08 40 No Waterman Wash near Buckeye 09514200 33 19 49 / 112 30 33 No Hartman Wash near Wickenburg 09515800 33 57 46 / 112 49 40 Yes, ID #51207 Ox Wash near Morristown 09516600 33 53 00 / 112 39 00 No Jackrabbit Wash near Tonopah 09516800 33 39 32 / 112 49 40 No Centennial Wash Tributary near Wenden 09517200 33 50 40 / 113 27 00 No Tiger Wash near Aguila 09517280 33 44 30 / 113 16 43 Yes, ID #27007 Winters Wash near Tonopah 09517400 33 29 22 / 112 55 05 No Rainbow Wash Tributary near Buckeye 09519600 33 14 35 / 112 38 15 No Bender Wash near Gila Bend 09519750 32 54 25 / 112 33 05 Yes, ID #40507 Sauceda Wash near Gila Bend 09519760 32 52 14 / 112 45 30 Yes, ID #71007 Military Wash near Sentinel 09520100 32 50 43 / 113 16 44 No Crater Range Wash near Ajo 09520230 32 33 44 / 112 52 37 No Star Wash near Tonopah 09516790 33 37 59 / 112 46 44 No None 33 28 08 / 112 58 10 Yes, ID #25007 Delaney Wash near Tonopah viii USGS Station ID FCD Gage Yes, ID #74507 DEFINITION OF TERMS Terms related to streamflow and other hydrologic data as used in this report are defined below: Table 4: Definitions Term Acre-foot (ac-ft or af) Definition The quantity of water required to cover 1 acre to a depth of 1 foot and is equivalent to 43,560 cubic feet or about 326,000 gallons or 1,233 cubic meters. Basin A typically man-made structure that is partially or entirely below the normal grade of land where it lies. It is for detaining water for release to another structure such as a storm drain. CAP Central Arizona Project, as in the CAP canal. Cubic Feet per Second (cfs) The rate of discharge representing a volumne of 1 cubic foot passing a given point during a one-second interval, and is equivalent to approximately 7.48 gallons per second, 448.8 gallons per minute, or 0.02832 cubic meters per second. The average discharge in cfs for a 24 hour period from midnight to midnight the following day. Daily Mean Discharge Data Gaps in Period of Record Discharge (Q) Data gaps referred to here are typically due to construction activites that cause the gage and station to be removed and out of service for a period of time. There are times when the station is down due to internal or external failure (battery, transmitter, repeater), but the station remains ‘in the ground.’ These gaps are not accounted for in this report. The volume of water (or more broadly, total fluid plus suspended sediment), that passes a given point within a given period of time. ix Drainage Area (DA) The area, measured in a horizontal plane, enclosed by a topographic divide from which direct surface runoff from precipitation normally drains by gravity into the stream above the specified point. Flood Flow Frequency Refers to the magnitude (in terms of peak discharge) and probability of floods at a given gaging station. The flood flow frequency is usually given as a peak discharge associated with a given recurrence interval at a particular gaging station. FRS Flood Retarding Structure, refers to dams originally constructed by the Soil Conservation Service (SCS), now known as the Natural Resources Conservation Service (NRCS). Gage (or gauge) Refers to a measuring device or sensor, such as a pressure transducer, or bubbler orifice, or a passive device, such as a staff gage, or crest-stage gage. Gage Datum The elevation of the zero point of the reference gage from which gage height is determined. This elevation is established by a system of levels from known bench marks or by approximation from topographic maps or arbitrarily established to a known point such as a culvert invert elevation. The water-surface elevation referred to some arbitrary gage datum. Gage height is often used interchangeably with the more general term "stage," although gage height is more appropriate when used with a reading on a gage. Gage Height Gage Station or Station A purpose-built structure containing sensors that make systematic observations of hydrologic data. Mean Discharge (cfs) (MEAN) is the arithmetic mean of individual daily mean discharges during a specific period. x NGVD29 – (aka MSL) NAVD88 Peak Discharge (cfs) A geodetic datum derived from a general adjustment of the first order level nets of both the United States and Canada. It was formerly called "Sea Level Datum of 1929" or "mean sea level." Although the datum was derived from the average sea level over a period of many years at 26 tide stations along the Atlantic, Gulf of Mexico, and Pacific Coasts, it does not necessarily represent local mean sea level at any particular place. A datum based on the mass or density of the Earth instead of the varying values of the heights of the seas. Measurements of the acceleration of gravity are made at observation points in a network. Only one point is defined as the datum point. The vertical reference surface is then defined by the surface on which the gravity values are equal to the datum point value. This is called an equipotential surface. is the maximum instantaneous discharge for a given flood event. Period of Record (POR) is the time period for which data exists for a given stream gaging station. Pressure Transducer is an instrument used to measure the depth of water. It is an analog instrument which measures a pressure change over a diaphragm. The depth of water is related to the change in pressure over the diaphragm created by the weight of the water above the instrument. is the reciprocal of the probability of a flood occurring in any given year. Thus, the flood having a 1% (1/100, or 1 in 100) chance of occurring in any given year has a recurrence interval of 100 years and is referred to as the 100-year flood. Similarly, the flood having a 50% (1/2 or 1 in 2) chance of occurring in any given year has a recurrence interval of 2 years and is referred to as the 2year flood. A sensor, in terms of stream-gaging, is a device that detects the presence of water, and could be a transducer, a bubbler-line, a status sensor, a RADAR device, a float device (USGS), or other mechanism that responds to the presence of water. Recurrence Interval Sensor xi Staff Gage Is a device located at the gaging station to provide a visual reference to the depth of water at a gage in terms of gage height above the water level measuring instrument. Stage-Discharge Relationship Is the relation between gage height (stage) and the volume of water, per unit of time, flowing in a channel or from a pipe or culvert. Stage-Only Site Sites that only measure stage, but no discharge or volume. Sites would include two Game and Fish water troughs, two underpass sites in downtown Phoenix, and three sites with status sensors, but no other sensor types. Stage-Storage Relationship is the relation between gage height (stage) and the volume of water stored behind or within a flood control impoundment structure. Station See ‘Gage Station, or Station’ in the table above. Status Sensor A device that trips a switch ‘on’ when a float on the sensor is actuated by rising water level. Conversely, the switch is ‘off’ when the water level falls below the levels of the float. Is used to indicate that water has reached a predetermined level. is the discharge that occurs in a natural channel. Although the term "discharge" can be applied to the flow of a canal, the word "streamflow" uniquely describes the discharge in a surface stream course. The term "streamflow" is more general than "runoff" as streamflow may be applied to discharge whether or not it is affected by diversion or regulation. dealing with surface-water data is the 12-month period, October 1 through September 30. The water year is designated by the calendar year in which it ends and includes 9 of the 12 months. Thus, the water year beginning October 1, 2020 and ending September 30, 2021, is called the "2021 Water Year." Streamflow Water Year xii FCDMC STREAMFLOW AND IMPOUNDMENT GAGE LOCATIONS – WY 2021 Streamflow Station Impoundment / Storage Station xiii New Installations in Water Year 2021 There were no new streamgage stations established during Water Year 2021. Table 5: New Installations Station None ID Date Installed Requesting Agency Station Changes in Water Year 2021 • Skunk Creek at Desert Hills Drive was moved upstream about 100 feet in May 2021. It was also destroyed during the flood of July 23, 2001 and was out of service the remainder of the Water Year. It was reinstalled in November 2021. Revisions To Previous Edition of This Report • After completion of the report, the rating at Skunk Creek at Desert Hills Drive was re-evaluated and the peak for the July 23, 2021 event was revised from an estimated 8,000 cfs to 8,650 cfs at the same stage of 9.45 feet. xiv Gage Stations included in this report (click on page number to go to that page) NAME ID Page Arizona Canal Diversion Channel (ACDC) at 36h Street 10007 1 th ACDC at 14 Street 10507 5 rd ACDC at 43 Avenue 11307 9 ACDC at 67th Avenue 13807 13 Adobe Dam Pool 65017 18 Adobe Dam Outlet 65007 23 Agua Fria River at Grand Avenue 14707 27 Agua Fria River at Buckeye Road (MC-85) 85307 31 Amigos Wash 80507 35 Antelope Creek 55207 39 Apache Junction FRS 81307 43 Apache Trail 36507 49 Aspen Dam 78707 53 Baseline Road at 43rd Avenue Basin 66407 59 Bender Wash 40507 65 Berneil Wash 59207 69 Blue Tank Wash 52707 73 Box Wash 47507 77 Buckeye FRS #1 44007 79 Buckeye FRS #2 44507 85 Buckeye FRS #3 48807 93 Bullard Wash at Indian School Road 89507 99 Bullard Wash at Van Buren Street 89207 103 Camelback Road at 24th Avenue Basin 6807 107 CAP Reach #11 Dike #1 8407 113 CAP Reach #11 Dike #2 58607 119 CAP Reach #11 Dike #3 60107 125 CAP Reach #11 Dike #4 59807 131 Casandro Wash 52007 137 Casandro Dam 53007 141 Cave Buttes Dam Pool 19517 147 Cave Buttes Dam Outlet 19507 152 Cave Creek at Ashdale Ranger Station 21307 156 Cave Creek at Spur Cross 20707 160 Cave Creek (in town of Cave Creek) 19007 164 Cave Creek near Cave Creek 20507 168 Cave Creek at CAP 19807 172 Cave Creek at Cactus Road 11807 176 Centennial Wash near Aguila 29007 180 Centennial Wash at Wenden 27507 184 Centennial Levee 25707 188 Centennial Wash at UPRR 24707 192 Centennial Tributary at Dobbins Road 22807 196 xv NAME Cline Creek Colter Channel at El Mirage Road Columbus Wash Copper Wash Crossroads Park Cruff Wash Daggs Wash Deadman Wash at SR303L Delaney Wash Desert Hills Wash Dreamy Draw Dam Dysart Drain at LAFB Dysart Drain at El Mirage Road East Fork Cave Creek Basin #1 East Fork Cave Creek Basin #3A East Fork Cave Creek Basin #3B East Fork Cave Creek Basin #4 East Fork Cave Creek near 7th Avenue El Mirage Road Drain East Maricopa Floodway (EMF) at Broadway Road EMF below Powerline Floodway EMF at Queen Creek Road EMF at Arizona Avenue Estrella Fan Flying E Wash Ford Canyon Wash Fourth of July Wash Freestone Basin Galloway Wash at Galloway Road Gila River at Olberg Road Gila River at Maricopa Road Gila River at 116th Avenue Bridge (Avondale Blvd.) Gila River at Estrella Parkway Golden Eagle Park Dam Grand Avenue at 27th Avenue Basin Granite Reef Diversion Granite Reef Wash Greene Wash at SR84 Guadalupe Channel Guadalupe FRS Harquahala FRS Hartman Wash Hassayampa River at Wagoner Bridge Hassayampa River at Box Canyon xvi ID 66007 85507 40807 41007 33007 23707 48507 62107 25007 19307 9807 85807 85707 7807 8807 8707 8207 8507 14507 34307 33707 34807 35507 84207 51707 86207 41207 32807 20607 42007 41707 70707 83807 78007 3807 75007 57507 64007 35707 68207 26007 51207 54307 53507 Page 200 204 208 212 216 221 225 229 233 237 241 247 251 255 261 267 273 279 283 287 291 295 299 303 307 311 315 319 324 328 332 336 340 344 350 356 360 364 368 372 378 384 388 392 NAME Hassayampa River at US60 Hassayampa River near Morristown Hassayamap River at I-10 Hesperus Dam Indian Bend Wash (IBW) at Sweetwater Avenue IBW at Shea Boulevard IBW near Indian Bend Road IBW at McDonald Drive IBW at Indian School Road IBW near McKellips Road IBW Interceptor Channel Jackrabbit Wash Lake Margherite Laveen Basin Magma FRS Martinez Creek McDowell Mountain Road McMicken Dam at Bell Road McMicken Dam McMicken Floodway Mineral Canyon Basin New River Fire New River at SR303L New River Dam Pool New River Dam Outlet New River at Bell Road New River at Glendale Avenue North Heights Dam Old Crosscut Canal Paradise Lane at 33rd Drive Basin Paradise Lane at 47th Avenue Basin Pecos Sediment Basin Pecol Basin Pool Pecos North Inlet Pecos East Inlet Pecos West Inlet Phoenix Dam #2A Phoenix Dam #2B Phoenix Dam #3 Phoenix Dam #4 Phoenix Dam #7 Phoenix Dam #99 Phoenix East Park Dam Phoenix West Park Dam xvii ID 45707 45507 48007 79007 58307 59507 56307 57207 56507 55707 56807 45007 59007 67807 42307 49507 76007 71507 71707 71307 68807 62707 62213 62017 62007 61707 61507 78207 4707 12407 13707 70007 70017 69307 69507 69807 8907 9907 11507 12207 13307 12707 13007 13507 Page 396 400 404 408 414 418 423 427 431 435 439 443 447 451 457 463 467 471 475 481 485 491 495 499 504 508 512 517 523 527 533 539 545 551 555 559 563 569 575 583 587 593 599 605 NAME Phoenix Zoo Dam #3 Phoenix Zoo Dam #5 Picacho Wash Pima Canyon Wash Powder House Wash Powerline Floodway Powerline FRS Price Drain at Loop 202 Prickly Pear Wash Queen Creek at CAP Queen Creek at Rittenhouse Road Rainbow Wash Rawhide Wash Reata Pass Dam Reata Pass Wash Rittenhouse FRS Roeser Road at 23rd Avenue Basin Saddleback FRS Salt River below Granite Reef Diversion Salt River at Val Vista Drive Salt River at Priest Drive Salt River at 7th Avenue Salt River at 51st Avenue Salt River at 67th Avenue Sand Tank Wash at I-8 Santa Cruz River at SR84 Sauceda Wash Scatter Wash Seven Springs Wash Signal Butte FRS Siphon Draw Wash at Signal Butte Road Skunk Creek near New River Skunk Creek at Desert Hills Drive Skunk Creek at Carefree Highway Skunk Creek at Dixileta Drive Skunk Creek at I-17 Skunk Tank Wash Sols Wash at SR71 Sols Wash Tributary at US93 Sols Wash near Matthie Sonoqui Wash near Hawes Road Sonoran Wash South Mountain Fan Spookhill FRS ID 4307 4407 74207 68707 52507 37507 36807 31507 8107 38007 37707 42807 61007 61207 60007 37207 66807 25207 75307 39507 67307 68007 5307 5807 40007 63807 71007 14007 21807 79507 37607 66207 64807 65707 64907 65807 64707 47707 50007 50807 36307 65907 70507 74707 xviii Page 611 617 623 627 631 635 639 645 649 653 657 661 665 669 675 679 685 691 697 701 705 709 713 717 721 725 729 733 737 741 747 751 755 759 763 767 771 775 779 783 787 791 795 799 NAME Spookhill FRS at McDowell Road Spookhill FRS at McKellips Road Spookhill FRS at Brown Road Stagecoach Wash Stoneridge Dam Sun Valley Parkway at Northern Avenue Wash Sunnycove FRS Sunridge Canyon Dam Sunset FRS Sycamore Creek Fire PT Tatum Wash Basin Inlet Tatum Wash Basin Tenth Street Wash Basin #1 Tiger Wash Twin Buttes Wash University Drive at 62nd Street (Mesa) Basin Upper Trilby Wash UPRR Underpass at First Avenue UPRR Underpass at Central Avenue US60 at Gold Canyon Wash Vekol Wash Vineyard FRS Vulture Mine Road Wagner Wash at Sun Valley Parkway Waterman Wash at Rainbow Valley Road Weekes Wash at Baseline Road White Tanks FRS #3 White Tanks FRS #4 White Tank Outflow Channel Whitlow Ranch Dam Winters Wash xix ID 80007 79807 81507 20007 77307 48307 46507 77507 46007 81807 58007 58507 11007 27007 73207 34607 73807 3107 3207 36907 74507 37007 47007 44707 83307 39207 87307 87807 87407 63307 25507 Page 805 811 815 823 827 833 837 843 849 855 860 864 870 876 880 884 890 894 898 902 906 910 916 920 924 928 932 938 944 948 954 SUMMARY OF SIGNIFICANT STREAMFLOW EVENTS Rainfall and runoff in Maricopa County occur primarily in the winter and summer. Ocasionally, significant rainfall occurs during the transitional season following the summer monsoon. In summary, Water Year 2021, like Water Year 2020 was a year of significant contrast. Water Year 2020 ended a record dry summer monsoon that continued into the Winter of calendar year 2020 and through the first half of calendar year 2021. With the onset of the 2021 monsoon season, significant rainfall began in earnest in mid-July. There were rainfall events as early as July 1 with several small rain/runoff events happening through the first three weeks of July. However, an unusually strong weather pattern set up for the period of July 21 – 27 and included many days of rain, with many significant and record runoff events, especially in the northeast portion of Maricopa County affecting the Skunk Creek and New River watersheds. Following this wet period there was a couple weeks of dry weather. Not until the period of August 10 – 18 did additional significant rainfall and runoff occur. Runoff was rather widespread in this period with many stream gages measuring flow. As a contrast, the winter season recorded 66 events among all the stream stations, whereas during the summer season, there were 708 events recorded among all the stream stations. Stations recording flow in winter: Stations with no flow in winter: Stations recording flow in summer: Stations with no flow in summer: 28 178 174 32 13.6 % 86.4 % 84.5 % 15.5 % Thirty-two stations recorded no runoff in Water Year 2021. Highlights of the runoff and impoundment events are summarized on the following two pages. xx Maximum Flows for Water Year 2021 at Selected FCDMC Water Level Sensor Locations Red values are peaks of record Location New River Fire (62707) Sand Tank Wash at I-8 (40007) Skunk Creek at Carefree Hwy (65707) Skunk Creek at I-17 (65807) Skunk Creek at Desert Hills Drive (64807) Agua Fria River at Buckeye Rd (85307) New River at SR303L (62213) Cave Creek at Cactus Rd (11807) Cave Creek at Cave Creek (19007) Salt River at Priest Drive (67307) New River at Glendale Ave (61507) Salt River below Granite Reef (75307) Hassayampa River at US60 (45707) East Fork Cave Creek near 7th Ave (8507) Skunk Creek at Dixileta Drive (64907) ACDC at 43rd Avenue (11307) Cave Creek at Ashdale R.S. (21307) Cline Creek (66007) Cave Creek near Cave Creek (20507) Indian Bend Wash at Indian School Rd (56507) ACDC at 67th Avenue (13807) Sonoqui Wash near Hawes Road (36307) Flying E Wash (51707) Skunk Tank Wash (64707) Sonoran Wash (65907) Many other runoff events in this range. Deadman Wash at SR303L (62107) Desert Hills Wash (19307) Blue Tank Wash (52707) Discharge (cfs) 15,962 14,000 (est) 11,278 9,429 8,650 6,176 5,483 5,183 5,178 5,057 3,845 3,763 3,683 3,610 3,186 3,015 2,736 2,694 2,575 2,359 2,251 2,237 2,214 1,278 1,131 Stage (feet) 749 383 238 Date 7.88 7.69 6.78 5.74 9.45 1.32 5.46 12.66 7.65 6.18 4.85 10.84 2.47 7.08 6.78 4.48 8.03 6.90 4.57 4.33 6.25 7.10 4.44 7.63 5.72 07/23/2021 08/14/2021 07/23/2021 07/23/2021 07/23/2021 07/25/2021 07/23/2021 08/14/2021 08/18/2021 07/23/2021 08/14/2021 08/12/2021 08/18/2021 07/23/2021 07/23/2021 08/14/2021 07/29/2021 07/23/2021 08/18/2021 07/23/2021 8/14/2021 08/17/2021 08/01/2021 07/23/2021 07/25/2021 1.75 1.37 1.34 08/12/2021 07/23/2021 07/31/2021 Note: Many stations recorded multiple events. These are the maximum peaks for the year. xxi Water Year 2021 Maximum Impoundments for Water Year 2021 at Selected FCDMC Water Level Sensor Locations Red values are peaks of record Location Adobe Dam Pool (65017) Aspen Dam (78707) Baseline Rd at 43rd Ave Basin (66407) Cave Buttes Dam Pool (19517) Golden Eagle Park Dam (78007) Grand Ave at 27th Ave Basin (3807) Hesperus Dam (79007) Magma FRS (42307) New River Dam Pool (62017) North Heights Dam (78207) Paradise Ln at 33rd Drive Basin (12407) Paradise Ln at 47th Avenue Basin (13707) Phoenix Zoo Dam #5 (4407) Rittenhouse FRS (37207) Roeser Rd at 23rd Ave Basin (66807) Signal Butte FRS (79507) Spookhill FRS (74707) Stoneridge Dam (77307) Sunridge Canyon Dam (77507) Vineyard FRS (37007) Whitlow Ranch Dam (63307) Discharge (cfs) 585 158 --181 970 --202 94 316 250 56 ----115 --0 56 71 137 85 537 Stage (feet) 10.72 9.03 3.48 14.26 13.00 4.22 11.28 12.51 6.63 18.47 3.54 3.26 9.00 11.66 3.32 9.43 8.50 10.48 7.50 4.26 31.26 (ac-ft) 499.2 22.4 3.4 129.3 17.5 14.4 11.3 650.8 260.3 30.3 39.9 29.2 10.0 789.0 37.7 128.0 359.7 9.0 0.1 934.0 1,139.0 Contents (%full) 2.6 12.2 7.6 0.3 17.4 38.9 4.1 11.7 0.6 22.0 47.2 72.5 103.8 19.9 27.7 7.8 12.8 13.6 0.3 20.0 5.6 Date 07/23/2021 08/13/2021 08/14/2021 08/19/2021 08/13/2021 08/14/2021 08/13/2021 07/05/2021 07/24/2021 08/13/2021 08/14/2021 08/13/2021 07/22/2021 08/17/2021 08/14/2021 08/17/2021 08/14/2021 08/13/2021 08/13/2021 08/17/2021 08/15/2021 Note: Many stations recorded multiple events. These include the maximum peaks for the year. xxii Water Year 2021 DATA PRESENTATION The following pages present the data collected by the Flood Control District ALERT system. Data have been retrieved from a TriLynx Systems, LLC® NovaStar5 database, maintained at the Flood Control District of Maricopa County. The data pages are in alphabetical order by name. If there is more than one station on a stream such as Cave Creek, the stations are placed in stream order, upstream to downstream. The data tables included with each gage are reports directly produced by a database function. In the tables where there are dashes “- - -“ on a particular date or dates, the gage was down. Typically a gage is down when the gage itself fails, or a transmitter or repeater fails. In the case of transmitter failure or repeater failure, data for that date is available by manual download. However, when no event has occurred, the data will typically not be retrieved from the device. xxiii Water Year 2021 Arizona Canal Diversion Channel at 36th Street, ID #10007 Site Data LOCATION At the inlet to the ACDC near 36th Street and Stanford Drive DRAINAGE AREA 4.8 mi2 STREAM TYPE Engineered Basin / Channel JURISDICTION Phoenix, Arizona WATERSHED Upper ACDC SECTION/TOWNSHIP/RANGE S13 T2N R3E LATITUDE N 33° 30' 49.3" | +33.51368 LONGITUDE W 111° 59' 58.7" | -111.99963 STREAMGAGE INSTALLATION DATE 02/24/1994 - WY 1994 AVAILABLE PERIOD OF RECORD (POR) 02/24/1994 - Current LENGTH OF AVAILABLE POR DATA 27.60 Years | 10,081 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.12 feet Gage Height ZERO GAGE HEIGHT ELEVATION 1,237.92 feet NAVD88 POINT OF ZERO FLOW 0.0 feet Gage Height EXTREME FOR PERIOD OF RECORD 479 cfs | 7.89 feet | 10/02/2018 FCDMC Annual Surface Water Report, Water Year 2021 Page 1 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 2 WY2021 Events Date of Peak 12/10/2020 01/25/2021 07/21/2021 07/25/2021 08/13/2021 Peak Gage Height 0.54 0.54 0.99 1.12 1.62 Peak Discharge (cfs) 3 3 3 5 14 Hydrograph of peak WY 2021 flow event, 08/13/2021 Flood Flow Frequency Flood Flow Frequency N=28, HEC-WRC computation (based on 28 years of data) 2-year 5-year 10-year 20-year 50-year 100-year 22 69 132 237 475 775 FCDMC Annual Surface Water Report, Water Year 2021 Page 3 ACDC at 36th Street, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 1 14 1 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 1 2 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 5 14 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 2 3 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 3 MEAN 0 MAX 14 MIN 0 AC_FT 5 FCDMC Annual Surface Water Report, Water Year 2021 Page 4 Arizona Canal Diversion Channel at 14th Street – ID #10507 Site Data LOCATION Near 14th Street and Orangewood Avenue DRAINAGE AREA 13.6 mi2 STREAM TYPE Engineered Channel JURISDICTION Phoenix, Arizona WATERSHED Upper ACDC SECTION/TOWNSHIP/RANGE S04 T2N R3E LATITUDE N 33° 32' 37.3" | +33.54369 LONGITUDE W 112° 03' 05.1" | -112.05141 STREAMGAGE INSTALLATION DATE 02/09/1994 - WY 1994 AVAILABLE PERIOD OF RECORD (POR) 02/09/1994 - Current LENGTH OF AVAILABLE POR DATA 27.64 Years | 10,096 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.35 feet Gage Height STAFF GAGES 1 ZERO GAGE HEIGHT ELEVATION 1,216.04 feet NAVD88 POINT OF ZERO FLOW 0.0 feet Gage Height EXTREME FOR PERIOD OF RECORD 1,414 cfs | 6.75 feet | 09/08/2014 FCDMC Annual Surface Water Report, Water Year 2021 Page 5 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 6 WY2021 Events Date of Peak 07/03/2021 07/23/2021 07/30/2021 08/13/2021 08/17/2021 08/18/2021 Peak Gage Height (feet) 1.04 0.57 0.67 1.67 1.62 0.74 Peak Discharge (cfs) 50 23 28 123 116 32 Hydrograph of peak WY 2021 flow event, 08/13/2021 Flood Flow Frequency Flood Flow Frequency N=28, HEC-WRC computation (based on 28 years of data) 2-year 5-year 10-year 20-year 50-year 100-year 113 322 492 658 864 1,010 FCDMC Annual Surface Water Report, Water Year 2021 Page 7 ACDC at 14th Street, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 3 4 5 6 7 8 9 10 11 12 13 3 14 9 15 16 17 6 18 3 19 20 21 22 23 2 24 25 26 27 28 29 --30 --2 31 --------1 -------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 7 21 0 MEAN 0 0 0 0 0 0 0 0 0 0 1 0 MAX 0 0 0 0 0 0 0 0 0 50 123 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 15 41 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 28 MEAN 0 MAX 123 MIN 0 AC_FT 56 FCDMC Annual Surface Water Report, Water Year 2021 Page 8 Arizona Canal Diversion Channel at 43rd Avenue, ID #11307 Site Data LOCATION Near Peoria and 43rd Avenues DRAINAGE AREA 56 mi2 below Cave Buttes Dam STREAM TYPE Engineered Channel JURISDICTION Phoenix, Arizona WATERSHED Upper ACDC SECTION/TOWNSHIP/RANGE S22 T3N R2E LATITUDE N 33° 35' 02.4" | +33.58400 LONGITUDE W 112° 09' 15.2" | -112.15422 STREAMGAGE INSTALLATION DATE 11/14/1990 - WY 1991 AVAILABLE PERIOD OF RECORD (POR) 11/14/1990 - Current LENGTH OF AVAILABLE POR DATA 30.88 Years | 11,279 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.95 feet Gage Height STAFF GAGES 1 ZERO GAGE HEIGHT ELEVATION 1,200.58 feet NAVD88 POINT OF ZERO FLOW 0.0 feet Gage Height EXTREME FOR PERIOD OF RECORD 5,601 cfs | 6.58 feet | 09/08/2014 FCDMC Annual Surface Water Report, Water Year 2021 Page 9 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 10 WY2021 Events Date of Peak 07/22/2021 07/31/2021 08/14/2021 08/17/2021 08/18/2021 Peak Gage Height (feet) 1.97 1.62 4.48 2.27 2.44 Peak Discharge (cfs) 674 456 3,015 895 1,031 Hydrograph of peak WY 2021 flow event, 08/14/2021 Flood Flow Frequency Flood Flow Frequency N=31, HEC-WRC computation (based on 31 years of data) 2-year 5-year 10-year 20-year 50-year 100-year 1,150 2,240 3,170 4,230 5,840 7,250 FCDMC Annual Surface Water Report, Water Year 2021 Page 11 ACDC at 43rd Avenue, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 78 14 359 15 16 17 87 18 154 19 20 21 22 32 23 3 24 25 26 27 28 29 --30 --31 --------19 -------------------------------------------------------------------------------TOTAL 3 3 3 3 4 4 4 4 4 57 681 4 MEAN 0 0 0 0 0 0 0 0 0 2 22 0 MAX 0 0 0 0 0 0 0 0 0 674 3015 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 5 5 5 5 8 7 7 7 7 114 1351 7 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 771 MEAN 2 MAX 3015 MIN 0 AC_FT 1529 FCDMC Annual Surface Water Report, Water Year 2021 Page 12 Arizona Canal Diversion Channel at 67th Avenue, ID #13807 Site Data LOCATION On 67th Avenue south of Greenway Road DRAINAGE AREA 283.7 mi2 below Cave Buttes Dam STREAM TYPE Engineered Channel JURISDICTION Glendale, Arizona WATERSHED Upper ACDC SECTION/TOWNSHIP/RANGE S12 T3N R1E LATITUDE N 33° 37' 17.8" | +33.62161 LONGITUDE W 112° 12' 09.7" | -112.20269 STREAMGAGE INSTALLATION DATE 06/07/1990 - WY 1990 AVAILABLE PERIOD OF RECORD (POR) 06/07/1990 - Current LENGTH OF AVAILABLE POR DATA 31.32 Years | 11,439 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.00 feet Gage Height STAFF GAGES 2 CREST STAGE GAGES 4 ZERO GAGE HEIGHT ELEVATION 1,189.06 feet NAVD88 POINT OF ZERO FLOW 0.0 feet Gage Height EXTREME FOR PERIOD OF RECORD 5,511 cfs | 8.40 feet | 09/08/2014 FCDMC Annual Surface Water Report, Water Year 2021 Page 13 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 14 WY2021 Events Date of Peak 12/10/2020 01/24/2021 01/25/2021 07/04/2021 07/23/2021 07/25/2021 07/31/2021 08/12/2021 08/14/2021 08/17/2021 08/18/2021 08/20/2021 09/26/2021 Peak Gage Height (feet) 2.58 1.46 2.39 1.46 2.88 1.31 3.22 1.56 6.25 3.37 4.05 1.22 1.07 Hydrograph of peak WY 2021 flow event, 08/14/2021 FCDMC Annual Surface Water Report, Water Year 2021 Page 15 Peak Discharge (cfs) 96 35 81 35 147 30 235 38 2,251 282 584 28 23 Flood Flow Frequency Flood Flow Frequency N=31, HEC-WRC computation (based on 31 years of data) 2-year 5-year 10-year 20-year 50-year 100-year 910 1,890 2,680 3,520 4,700 5,650 NOTE(1): These results are based on very limited data. NOTE(2): Cave Buttes Dam upstream limits the peak discharge from the upper portion of the watershed. Flood Flow Frequency U.S. Army Corps of Engineers Design 2-year 5-year 10-year 25-year 50-year 100-year 1,900 4,500 7,700 13,500 20,600 29,000 FCDMC Annual Surface Water Report, Water Year 2021 Page 16 ACDC at 67th Avenue, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 1 4 3 11 --5 3 --6 3 7 2 8 1 9 1 10 31 11 5 12 11 13 14 1 509 15 13 16 17 2 74 18 143 19 73 20 20 21 6 22 1 23 1 81 24 18 41 25 30 20 26 28 2 4 27 4 28 29 --30 --31 --------64 -------------------------------------------------------------------------------TOTAL 0 0 51 77 0 0 0 0 0 222 849 8 MEAN 0 0 2 2 0 0 0 0 0 7 27 0 MAX 0 0 96 81 0 0 0 2 0 235 2251 23 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 101 152 0 0 0 1 0 441 1684 16 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 1207 MEAN 3 MAX 2251 MIN 0 AC_FT 2394 FCDMC Annual Surface Water Report, Water Year 2021 Page 17 Adobe Dam Pool, ID #65017 Site Data LOCATION Near 43rd Avenue and Deer Valley Drive DRAINAGE AREA 89.6 mi2 STREAM TYPE Dam of natural drainage JURISDICTION Phoenix, Arizona WATERSHED Skunk Creek SECTION/TOWNSHIP/RANGE S21 T4N R2E LATITUDE N 33° 40' 38.0" | +33.67670 LONGITUDE W 112° 09' 14.3" | -112.15397 STREAMGAGE INSTALLATION DATE 10/28/1982 - WY 1983 AVAILABLE PERIOD OF RECORD (POR) 08/30/1988 - Current LENGTH OF AVAILABLE POR DATA 33.09 Years | 12,085 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 2.85 Feet Gage Height STAFF GAGES 14 ZERO GAGE HEIGHT ELEVATION 1,339.81 feet NAVD88 POINT OF ZERO FLOW 0.00 feet Gage Height SPILLWAY ELEVATION 39.77 feet Gage Height TOP OF DAM ELEVATION 65.07 feet Gage Height FCDMC Annual Surface Water Report, Water Year 2021 Page 18 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 19 WY2021 Events Date of Peak 07/23/2021 08/14/2021 Peak Gage Height (feet) 10.72 5.14 Peak Volume (ac-ft) 499.2 70.2 Hydrograph of peak WY 2021 impoundment event, 07/23/2021 FCDMC Annual Surface Water Report, Water Year 2021 Page 20 Percent Spillway Capacity 2.6 0.3 Adobe Dam Pool, volume data Volume, in acre-feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 --13 --1 14 --16 15 16 17 18 19 20 21 22 23 132 24 144 25 51 26 39 27 15 28 15 29 --5 30 --31 ---------------------------------------------------------------------------------------MEAN 0 0 0 0 0 0 0 0 0 13 1 0 MAX 0 0 0 0 0 0 0 0 0 499 70 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 1 MAX 499 MIN 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 21 Adobe Dam Pool, stage data Depth, in feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 3 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 4 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 5 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 6 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 7 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 8 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 10 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 11 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 12 2.9 2.9 2.9 2.9 2.9 --2.9 2.9 2.9 2.9 2.9 2.9 13 2.9 2.9 2.9 2.9 2.9 --2.9 2.9 2.9 2.9 2.9 2.9 14 2.9 2.9 2.9 2.9 2.9 --2.9 2.9 2.9 2.9 3.3 2.9 15 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 16 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 17 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 18 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 19 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 20 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 21 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 22 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 23 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 5.0 2.9 2.9 24 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 6.1 2.9 2.9 25 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 4.3 2.9 2.9 26 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 4.0 2.9 2.9 27 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 3.1 2.9 2.9 28 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 3.0 2.9 2.9 29 2.9 2.9 2.9 2.9 --2.9 2.9 2.9 2.9 2.9 2.9 2.9 30 2.9 2.9 2.9 2.9 --2.9 2.9 2.9 2.9 2.9 2.9 2.9 31 2.9 --2.9 2.9 --2.9 --2.9 --2.9 2.9 -------------------------------------------------------------------------------MEAN 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 3.1 2.9 2.9 MAX 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 10.7 5.1 2.9 MIN 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 -----------------------------------------------------------------------------WTR YR 2021 MEAN 2.87 MAX 10.72 MIN 2.85 FCDMC Annual Surface Water Report, Water Year 2021 Page 22 Adobe Dam Outlet, ID #65007 Site Data LOCATION Near 43rd Avenue and Deer Valley Drive DRAINAGE AREA 89.6 mi2 STREAM TYPE Engineered Channel JURISDICTION Phoenix, Arizona WATERSHED Upper ACDC SECTION/TOWNSHIP/RANGE S21 T4N R2E LATITUDE N 33° 40' 38.0" | +33.67670 LONGITUDE W 112° 09' 14.3" | -112.15397 STREAMGAGE INSTALLATION DATE 10/28/1982 - WY 1983 AVAILABLE PERIOD OF RECORD (POR) 08/30/1990 - Current LENGTH OF AVAILABLE POR DATA 33.09 Years | 12,085 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.00 feet Gage Height STAFF GAGES 1 CREST STAGE GAGES 0 ZERO GAGE HEIGHT ELEVATION 1,330.27 feet NAVD88 POINT OF ZERO FLOW -0.3 feet Gage Height EXTREME FOR PERIOD OF RECORD 1,239 cfs | 7.01 feet GH | 01/22/2010 FCDMC Annual Surface Water Report, Water Year 2021 Page 23 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 24 WY2021 Events Date of Peak 07/23/2021 07/23/2021 08/14/2021 Peak Gage Height 5.00 3.11 2.20 Peak Discharge (cfs) 460 195 107 Hydrograph of peak WY 2021 flow event, 07/23/2021 Flood Flow Frequency Flows past this gage are regulated by Adobe Dam directly upstream. Flood Flow Frequency is therefore not valid. FCDMC Annual Surface Water Report, Water Year 2021 Page 25 Adobe Dam Outlet, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 1 14 62 15 3 16 1 17 18 19 20 1 21 22 23 129 24 217 25 90 26 81 27 2 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 528 67 0 MEAN 0 0 0 0 0 0 0 0 0 17 2 0 MAX 0 0 0 0 0 0 0 0 0 460 107 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 1046 134 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 595 MEAN 2 MAX 460 MIN 0 AC_FT 1180 FCDMC Annual Surface Water Report, Water Year 2021 Page 26 Agua Fria River at Grand Avenue, ID #14707 Site Data LOCATION On Grand Avenue west of 113th Avenue DRAINAGE AREA 1,628 mi2 STREAM TYPE Channelized Natural Stream JURISDICTION El Mirage, Arizona WATERSHED White Tanks A / Lower Agua Fria SECTION/TOWNSHIP/RANGE S18 T3N R1E LATITUDE N 33° 36' 26.6" | +33.60739 LONGITUDE W 112° 18' 20.6" | -112.30571 STREAMGAGE INSTALLATION DATE 04/27/1994 - WY 1994 AVAILABLE PERIOD OF RECORD (POR) 04/27/1994 - Current LENGTH OF AVAILABLE POR DATA 27.43 Years | 10,019 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 2.50 feet Gage Height STAFF GAGES 3 CREST STAGE GAGES 1 ZERO GAGE HEIGHT ELEVATION 0.00 feet Gage Height POINT OF ZERO FLOW 1.6 feet Gage Height EXTREME FOR PERIOD OF RECORD 5,952 cfs | 6.50 feet | 10/27/2000 FCDMC Annual Surface Water Report, Water Year 2021 Page 27 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 28 WY2021 Events Date of Peak 07/25/2021 07/25/2021 07/31/2021 Peak Gage Height 4.10 4.49 3.17 Peak Discharge (cfs) 304 500 37 Hydrograph of peak WY 2021 flow event, 07/25/2021 Flood Flow Frequency There is not enough data to compute a flood flow frequency for this gage station. FCDMC Annual Surface Water Report, Water Year 2021 Page 29 Agua Fria River at Grand Avenue, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 102 26 27 28 29 --30 --31 --------1 -------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 103 0 0 MEAN 0 0 0 0 0 0 0 0 0 3 0 0 MAX 0 0 3 2 0 0 0 0 0 500 2 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 204 1 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 103 MEAN 0 MAX 500 MIN 0 AC_FT 205 FCDMC Annual Surface Water Report, Water Year 2021 Page 30 Agua Fria River at Buckeye Road, ID #85307 Site Data LOCATION On Buckeye Road east of Dysart Road DRAINAGE AREA 2,241 mi2 STREAM TYPE Channelized Natural Stream JURISDICTION Avondale, Arizona WATERSHED White Tanks A / Lower ACDC SECTION/TOWNSHIP/RANGE S14 T1N R1W LATITUDE N 33° 26' 06.3" | +33.43501 LONGITUDE W 112° 19' 55.8" | -112.33254 STREAMGAGE INSTALLATION DATE 10/12/1988 - WY 1989 AVAILABLE PERIOD OF RECORD (POR) 10/12/1988 - Current LENGTH OF AVAILABLE POR DATA 32.97 Years | 12,042 Days DATA GAPS IN POR 09/06/2003 - 07/13/2004 STAGE GAGE ELEVATION 0.26 feet Gage Height STAFF GAGES 1 CREST STAGE GAGES 0 ZERO GAGE HEIGHT ELEVATION 954.72 feet NAVD88 POINT OF ZERO FLOW 0.1 feet Gage Height EXTREME FOR PERIOD OF RECORD 10,274 cfs | 3.74 feet | 09/08/2014 EXTREME OUTSIDE PERIOD OF RECORD 44,200 cfs | 02/20/1980 FCDMC Annual Surface Water Report, Water Year 2021 Page 31 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 32 WY2021 Events Date of Peak 07/25/2021 08/14/2021 Peak Gage Height (feet) 1.32 0.79 Peak Discharge (cfs) 6,176 1,932 Hydrograph of peak WY 2021 flow event, 07/25/2021 Flood Flow Frequency Flood Flow Frequency FEMA, 1995 2-year 5-year 10-year 50-year 100-year 500-year 22,000 69,000 95,000 184,000 FCDMC Annual Surface Water Report, Water Year 2021 Page 33 Agua Fria River at MC85, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 167 15 16 17 18 19 20 21 22 23 24 25 644 26 9 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 653 167 0 MEAN 0 0 0 0 0 0 0 0 0 21 5 0 MAX 0 0 0 0 0 0 0 0 0 6176 1932 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 1295 332 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 820 MEAN 2 MAX 6176 MIN 0 AC_FT 1626 FCDMC Annual Surface Water Report, Water Year 2021 Page 34 Amigos Wash, ID #80507 Site Data LOCATION Located in Usery Mountain Park, northeast of the intersection of McKellips and Crismon Roads DRAINAGE AREA 0.47 mi2 STREAM TYPE Natural Stream JURISDICTION Maricopa County, Arizona WATERSHED Lower Verde SECTION/TOWNSHIP/RANGE S01 T1N R7E LATITUDE N 33° 27' 16.8" | +33.45467 LONGITUDE W 111° 36' 24.4" | -111.60677 STREAMGAGE INSTALLATION DATE 01/09/2013 - WY 2013 AVAILABLE PERIOD OF RECORD (POR) 01/09/2013 - Current LENGTH OF AVAILABLE POR DATA 8.73 Years | 3,187 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.75 feet Gage Height STAFF GAGES None ZERO GAGE HEIGHT ELEVATION 1,783.87 feet NAVD88 POINT OF ZERO FLOW 0.1 feet Gage Height EXTREME FOR PERIOD OF RECORD 669 cfs | 2.05 feet | 08/10/2018 FCDMC Annual Surface Water Report, Water Year 2021 Page 35 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 36 WY2021 Events Date of Peak Peak Gage Height Peak Discharge (cfs) 08/16/2021 1.00 2 Hydrograph of peak WY 2021 flow event, 08/16/2021 Flood Flow Frequency There is not enough data to compute a flood flow frequency for this gage station. FCDMC Annual Surface Water Report, Water Year 2021 Page 37 Amigos Wash, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 2 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 0 MEAN 0 MAX 2 MIN 0 AC_FT 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 38 Antelope Creek, ID #55207 Site Data LOCATION Located about 1.5 miles upstream from Martinez Creek (7013) DRAINAGE AREA 62 mi2 STREAM TYPE Natural Stream JURISDICTION Yavapai County, Arizona WATERSHED Lower Hassayampa SECTION/TOWNSHIP/RANGE S09 T8N R5W LATITUDE N 34° 02' 55.6" | +34.04877 LONGITUDE W 112° 46' 45.7" | -112.77937 STREAMGAGE INSTALLATION DATE 07/09/2003 - WY 2003 AVAILABLE PERIOD OF RECORD (POR) 07/09/2003 - Current LENGTH OF AVAILABLE POR DATA 18.23 Years | 6,659 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 2.00 feet Gage Height STAFF GAGES 0 CREST STAGE GAGES 1 ZERO GAGE HEIGHT ELEVATION 2,406.00 feet NAVD88 POINT OF ZERO FLOW 1.4 feet Gage Height EXTREME FOR PERIOD OF RECORD 7,169 cfs | 5.42 feet | 10/20/2015 FCDMC Annual Surface Water Report, Water Year 2021 Page 39 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 40 WY2021 Events Date of Peak 07/16/2021 07/21/2021 07/25/2021 07/29/2021 07/31/2021 08/13/2021 08/16/2021 Peak Gage Height (feet) 2.44 2.12 2.42 2.27 2.47 2.24 2.17 Peak Discharge (cfs) 199 78 190 132 212 122 94 Hydrograph of peak WY 2021 flow event, 07/31/2021 Flood Flow Frequency Flood Flow Frequency N=19, HEC-WRC computation (based on 19 years of data) 2-year 5-year 10-year 20-year 50-year 100-year 1,130 3,460 5,980 9,210 14,700 19,800 NOTE: These results are based on very limited data. FCDMC Annual Surface Water Report, Water Year 2021 Page 41 Antelope Creek, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 --6 7 8 9 10 11 12 13 2 14 15 16 6 2 17 18 19 20 21 1 22 23 24 25 --5 26 --27 28 29 --2 30 --31 --------8 -------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 21 4 0 MEAN 0 0 0 0 0 0 0 0 0 1 0 0 MAX 0 0 0 0 0 0 0 0 0 212 122 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 42 7 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 25 MEAN 0 MAX 212 MIN 0 AC_FT 50 FCDMC Annual Surface Water Report, Water Year 2021 Page 42 Apache Junction FRS, ID #81307 Site Data LOCATION Located near Idaho Road and Lost Dutchman Boulevard DRAINAGE AREA 5.8 mi2 STREAM TYPE Dam of natural drainage JURISDICTION Apache Junction, Arizona WATERSHED Lower Verde SECTION/TOWNSHIP/RANGE S08 T1N R8E LATITUDE N 33° 26' 29.2" | +33.44143 LONGITUDE W 111° 33' 06.4" | -111.55178 STREAMGAGE INSTALLATION DATE 09/15/1988 - WY 1988 AVAILABLE PERIOD OF RECORD (POR) 09/15/1988 - Current LENGTH OF AVAILABLE POR DATA 33.04 Years | 12,069 Days DATA GAPS IN POR None STAGE GAGE TYPE Pressure Transducer STAGE GAGE ELEVATION 0.13 feet Gage Height STAFF GAGES 5 ZERO GAGE HEIGHT ELEVATION 1,785.79 feet NAVD88 POINT OF ZERO FLOW 0.0 feet Gage Height SPILLWAY ELEVATION 16.00 feet Gage Height TOP OF DAM ELEVATION 27.00 feet Gage Height FCDMC Annual Surface Water Report, Water Year 2021 Page 43 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 44 WY2021 Events Date of Peak 08/11/2021 08/14/2021 08/17/2021 Peak Gage Height (feet) 3.25 5.16 2.32 Peak Volume (ac-ft) 4.5 20.6 1.8 Hydrograph of peak WY 2021 impoundment event, 08/14/2021 FCDMC Annual Surface Water Report, Water Year 2021 Page 45 Percent Spillway Capacity 0.7 3.1 0.2 Apache Junction FRS, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 5 12 13 1 14 17 15 16 1 17 3 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 27 0 MEAN 0 0 0 0 0 0 0 0 0 0 1 0 MAX 0 0 0 0 0 0 0 0 0 0 31 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 0 54 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 27 MEAN 0 MAX 31 MIN 0 AC_FT 54 FCDMC Annual Surface Water Report, Water Year 2021 Page 46 Apache Junction FRS, volume data Volume, in acre feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 1 12 13 14 7 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 21 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0 MAX 21 MIN 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 47 Apache Junction FRS, stage data Depth, in feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 2 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 3 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 4 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 5 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 6 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 7 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 8 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 9 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 10 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 11 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.8 0.1 12 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 13 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.3 0.1 14 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 2.8 0.1 15 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 16 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.2 0.1 17 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.6 0.1 18 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 19 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 20 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 21 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 22 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 23 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 24 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 25 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 26 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 27 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 28 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 29 0.1 0.1 0.1 0.1 --0.1 0.1 0.1 0.1 0.1 0.1 0.1 30 0.1 0.1 0.1 0.1 --0.1 0.1 0.1 0.1 0.1 0.1 0.1 31 0.1 --0.1 0.1 --0.1 --0.1 --0.1 0.1 -------------------------------------------------------------------------------MEAN 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.3 0.1 MAX 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 5.2 0.1 MIN 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0.14 MAX 5.16 MIN 0.13 FCDMC Annual Surface Water Report, Water Year 2021 Page 48 Apache Trail, ID #36507 Site Data LOCATION Located near the corner of Fourth Avenue and Royal Palm Road DRAINAGE AREA 0.35 mi2 STREAM TYPE Natural drainaged, encroached by development JURISDICTION Apache Junction, Arizona WATERSHED Upper EMF SECTION/TOWNSHIP/RANGE S21 T1N R8E LATITUDE N 33° 24’ 41.8" | +33.41161 LONGITUDE W 111° 32' 13.0" | -111.53695 STREAMGAGE INSTALLATION DATE 06/27/2019 - WY 2020 AVAILABLE PERIOD OF RECORD (POR) 06/27/2019 – Current LENGTH OF AVAILABLE POR DATA 2.26 Years | 827 Days DATA GAPS IN POR 10/17/2019 – 11/04/2019 STAGE GAGE ELEVATION 0.00 feet Gage Height STAFF GAGES 0 CREST STAGE GAGES 0 ZERO GAGE HEIGHT ELEVATION 1,732.24 feet NAVD88 POINT OF ZERO FLOW 0.0 feet Gage Height EXTREME FOR PERIOD OF RECORD 480 cfs | 2.87 feet GH | 09/23/2019 FCDMC Annual Surface Water Report, Water Year 2021 Page 49 Colt Rd Belaire Rd Hopi Rd Location Map 50365 ! ! Cactus Rd 4th Ave Old We st H wy FCDMC Annual Surface Water Report, Water Year 2021 Page 50 Royal PalmRd 6th Ave WY2021 Events Date of Peak 07/22/2021 07/23/2021 07/24/2021 08/11/2021 08/11/2021 08/13/2021 08/16/2021 Peak Gage Height 0.28 0.36 0.67 1.22 1.27 1.48 0.85 Peak Discharge (cfs) 5 7 16 41 44 60 23 Hydrograph of peak WY 2021 flow event, 08/13/2021 Flood Flow Frequency There is not enough data to compute a flood flow frequency for this gage station. FCDMC Annual Surface Water Report, Water Year 2021 Page 51 Apache Trail, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 3 12 13 2 14 15 16 1 17 18 19 20 21 22 23 1 24 1 25 1 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 1 0 0 0 0 0 2 5 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 7 0 0 0 0 0 16 60 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 1 0 0 0 0 0 5 11 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 9 MEAN 0 MAX 60 MIN 0 AC_FT 17 FCDMC Annual Surface Water Report, Water Year 2021 Page 52 Aspen Dam, ID #78707 Site Data LOCATION Near Aspen Drive and Golden Eagle Boulevard DRAINAGE AREA 2.13 mi2 STREAM TYPE Dam of natural drainage JURISDICTION Fountain Hills, Arizona WATERSHED Lower Verde SECTION/TOWNSHIP/RANGE S16 T3N R6E LATITUDE N 33° 37' 33.1" | +33.62587 LONGITUDE W 111° 44' 47.3" | -111.74646 STREAMGAGE INSTALLATION DATE 01/02/1997 - WY 1997 AVAILABLE PERIOD OF RECORD (POR) 01/02/1997 - Current LENGTH OF AVAILABLE POR DATA 24.74 Years | 9,038 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.33 feet Gage Height STAFF GAGES 0 ZERO GAGE HEIGHT ELEVATION 1,810.88 feet NAVD88 POINT OF ZERO FLOW 0.00 feet Gage Height SPILLWAY CREST ELEVATION 26.8 feet Gage Height TOP OF DAM ELEVATION 34.6 feet Gage Height FCDMC Annual Surface Water Report, Water Year 2021 Page 53 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 54 WY2021 Events Date of Peak 07/23/2021 08/11/2021 08/13/2021 Peak Gage Height (feet) 1.73 3.68 9.03 Peak Volume (ac-ft) 0.3 2.5 22.4 Hydrograph of peak WY 2021 impoundment event, 08/13/2021 FCDMC Annual Surface Water Report, Water Year 2021 Page 55 Percent Spillway Capacity 0.5 1.4 12.2 Aspen Dam, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 5 12 13 11 14 2 15 16 17 1 18 19 20 21 22 23 2 1 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 2 19 0 MEAN 0 0 0 0 0 0 0 0 0 0 1 0 MAX 0 0 0 0 0 0 0 0 0 26 158 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 4 38 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 21 MEAN 0 MAX 158 MIN 0 AC_FT 42 FCDMC Annual Surface Water Report, Water Year 2021 Page 56 Aspen Dam, volume data Volume, in acre feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 1 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 22 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0 MAX 22 MIN 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 57 Aspen Dam, stage data Depth, in feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 3 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 4 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 5 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 6 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 7 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 8 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 9 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 10 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 11 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.5 0.2 12 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 13 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.8 0.2 14 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.4 0.2 15 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 16 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 17 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 18 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 19 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 20 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 21 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 22 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 23 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.4 0.2 0.2 24 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 25 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 26 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 27 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 28 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 29 0.2 0.2 0.2 0.2 --0.2 0.2 0.2 0.2 0.2 0.2 0.2 30 0.2 0.2 0.2 0.2 --0.2 0.2 0.2 0.2 0.2 0.2 0.2 31 0.2 --0.2 0.2 --0.2 --0.2 --0.2 0.2 -------------------------------------------------------------------------------MEAN 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.3 0.2 MAX 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 1.7 9.0 0.2 MIN 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0.24 MAX 9.03 MIN 0.24 FCDMC Annual Surface Water Report, Water Year 2021 Page 58 Baseline Road at 43rd Avenue Basin, ID #66407 Site Data LOCATION Located on the basin at the northeast corner of Baseline Rd and 43rd Avenue DRAINAGE AREA Undetermined STREAM TYPE Flood control basin JURISDICTION Phoenix, Arizona WATERSHED South Mountain SECTION/TOWNSHIP/RANGE S34 T1N R2E LATITUDE N 33° 22' 47.2" | +33.37978 LONGITUDE W 112° 09' 02.5" | -112.15070 STREAMGAGE INSTALLATION DATE 10/01/2015 - WY 2016 AVAILABLE PERIOD OF RECORD (POR) 10/01/2015 - Current LENGTH OF AVAILABLE POR DATA 6.00 Years | 2,192 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.20 feet Gage Height STAFF GAGES 0 ZERO GAGE HEIGHT ELEVATION 1,023.95 feet NAVD88 POINT OF ZERO FLOW 0.00 feet Gage Height SPILLWAY CREST ELEVATION No spillway TOP OF BASIN ELEVATION 10.5 feet Gage Height FCDMC Annual Surface Water Report, Water Year 2021 Page 59 Location Map FCDMC Annual Surface Water Report, Water Year 2021 Page 60 WY2021 Events Date of Peak 12/10/2020 01/25/2021 01/29/2021 07/14/2021 07/23/2021 07/24/2021 07/25/2021 08/14/2021 08/16/2021 09/01/2021 09/18/2021 Peak Gage Height (feet) 2.23 1.17 0.62 3.40 1.07 0.82 0.97 3.48 1.15 1.27 0.62 Peak Volume (ac-ft) 0.4 0.0 0.0 3.2 0.0 0.0 0.0 3.4 0.0 0.0 0.0 Hydrograph of peak WY 2021 impoundment event, 08/14/2021 FCDMC Annual Surface Water Report, Water Year 2021 Page 61 Percent Spillway Capacity 1.1 0.0 0.0 7.1 0.0 0.0 0.0 7.6 0.0 0.0 0.0 Baseline Road at 43rd Avenue Basin, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 0 MEAN 0 MAX 0 MIN 0 AC_FT 0 NOTE: No discharge rating exists for this site. FCDMC Annual Surface Water Report, Water Year 2021 Page 62 Baseline Road at 43rd Avenue Basin, volume data Volume, in acre-feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 3 3 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0 MAX 3 MIN 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 63 Baseline Road at 43rd Avenue Basin, stage data Depth, in feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.3 2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.3 3 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 4 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 5 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 6 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 7 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 8 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 9 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 10 0.2 0.2 0.5 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 11 0.2 0.2 0.3 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 12 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 13 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.3 0.2 14 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.7 0.7 0.2 15 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 16 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.3 0.2 17 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 18 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.3 19 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 20 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 21 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 22 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 23 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.4 0.2 0.2 24 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.3 0.2 0.2 25 0.2 0.2 0.2 0.3 0.2 0.2 0.2 0.2 0.2 0.5 0.2 0.2 26 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 27 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 28 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 29 0.2 0.2 0.2 0.3 --0.2 0.2 0.2 0.2 0.2 0.2 0.2 30 0.2 0.2 0.2 0.2 --0.2 0.2 0.2 0.2 0.2 0.2 0.2 31 0.2 --0.2 0.2 --0.2 --0.2 --0.2 0.2 -------------------------------------------------------------------------------MEAN 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 MAX 0.2 0.2 2.2 1.2 0.2 0.2 0.2 0.2 0.5 3.4 3.5 1.3 MIN 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0.21 MAX 3.48 MIN 0.20 FCDMC Annual Surface Water Report, Water Year 2021 Page 64 Bender Wash, ID #40507 Site Data STATUS Active LOCATION Located about 8 miles east of Gila Bend on I-8 DRAINAGE AREA 69.5 mi2 STREAM TYPE Natural Stream JURISDICTION Maricopa County, Arizona WATERSHED Lower Gila SECTION/TOWNSHIP/RANGE S15 T6S R3W LATITUDE N 32° 54' 22.9" | +32.90637 LONGITUDE W 112° 33' 11.1" | -112.55309 STREAMGAGE INSTALLATION DATE 05/12/2004 - WY 2004 AVAILABLE PERIOD OF RECORD (POR) 05/12/2004 - Current LENGTH OF AVAILABLE POR DATA 17.39 Years | 6,351 Days DATA GAPS IN POR 10/06/2015 – 05/22/2017 STAGE GAGE ELEVATION 1.20 feet Gage Height STAFF GAGES 0 CREST STAGE GAGES 0 ZERO GAGE HEIGHT ELEVATION 1,200.21 feet NAVD88 POINT OF ZERO FLOW 0.5 feet Gage Height EXTREME FOR PERIOD OF RECORD 1,132 cfs | 5.20 feet | 08/13/2014 EXTREME OUTSIDE PERIOD OF RECORD 8,250 cfs | 10.78 feet | 09/07/2002 FCDMC Annual Surface Water Report, Water Year 2021 Page 65 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 66 WY2021 Events Date of Peak Peak Gage Height (feet) Peak Discharge (cfs) 08/14/2021 2.75 364 Hydrograph of peak WY 2021 flow event, 08/14/2021 No data available for plot. Flood Flow Frequency Flood Flow Frequency HEC-WRC computation (based on data from 1963 – 1979, 1983, 1991 – 1996, 2004 - 2021) 2-year 5-year 10-year 20-year 50-year 100-year 75 517 1,280 2,570 5,330 8,410 NOTE: These results are based on limited data. FCDMC Annual Surface Water Report, Water Year 2021 Page 67 Bender Wash, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 ------2 ----3 --4 --5 ----6 7 --8 9 --10 ----11 ------12 ------13 ----4 14 ------15 ------16 17 18 --19 --20 --21 22 23 24 --25 ----------26 ------27 --28 29 ----30 ------31 -----------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 2 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 57 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 0 5 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 2 MEAN 0 MAX 57 MIN 0 AC_FT 5 FCDMC Annual Surface Water Report, Water Year 2021 Page 68 Berneil Wash, ID #59207 Site Data LOCATION Near 66th Street and Doubletree Road DRAINAGE AREA 8.3 mi2 STREAM TYPE Engineered Channel JURISDICTION Paradise Valley, Arizona WATERSHED Lower Indian Bend SECTION/TOWNSHIP/RANGE S34 T3N R4E LATITUDE N 33° 33' 58.5" | +33.56626 LONGITUDE W 111° 56' 19.6" | -111.93878 STREAMGAGE INSTALLATION DATE 07/30/1998 - WY 1998 AVAILABLE PERIOD OF RECORD (POR) 07/30/1998 - Current LENGTH OF AVAILABLE POR DATA 23.17 Years | 8,464 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.00 feet Gage Height ZERO GAGE HEIGHT ELEVATION 1,314.56 feet NAVD88 POINT OF ZERO FLOW 0.0 feet Gage Height EXTREME FOR PERIOD OF RECORD 1,634 cfs | 3.50 feet | 10/02/2018 FCDMC Annual Surface Water Report, Water Year 2021 Page 69 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 70 Berniel Wash, WY2021 Events Date of Peak 12/10/2020 01/24/2021 01/25/2021 07/16/2021 07/23/2021 07/25/2021 08/11/2021 08/12/2021 08/13/2021 08/17/2021 08/18/2021 08/31/2021 09/26/2021 Peak Gage Height (feet) 0.24 0.24 0.97 0.29 1.07 0.49 0.44 0.47 0.27 1.52 0.82 0.24 0.12 Peak Discharge (cfs) 33 33 216 45 250 87 76 83 40 422 171 33 11 Hydrograph of peak WY 2021 flow event, 07/23/2021 Flood Flow Frequency Flood Flow Frequency N=24, HEC-WRC computation (based on 24 years of data) 2-year 5-year 10-year 20-year 50-year 100-year 316 585 794 1,010 1,320 1,560 FCDMC Annual Surface Water Report, Water Year 2021 Page 71 Berneil Wash, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 2 3 4 5 6 7 8 9 10 3 11 5 12 5 13 14 9 15 --16 2 17 40 18 23 19 20 21 22 23 57 24 2 25 25 4 26 2 1 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 3 29 0 0 0 0 0 63 82 3 MEAN 0 0 0 1 0 0 0 0 0 2 3 0 MAX 0 0 33 216 1 0 0 0 0 250 422 14 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 6 58 0 0 0 0 0 125 163 6 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 180 MEAN 0 MAX 422 MIN 0 AC_FT 358 FCDMC Annual Surface Water Report, Water Year 2021 Page 72 Blue Tank Wash, ID #52707 Site Data LOCATION Located northeast of Wickenburg near Blue Tank Road crossing DRAINAGE AREA 9.3 mi2 STREAM TYPE Natural Stream JURISDICTION Yavapai County, Arizona WATERSHED Lower Hassayampa SECTION/TOWNSHIP/RANGE S29 T8N R4W LATITUDE N 34° 0’ 27.1" | +34.00753 LONGITUDE W 112° 41' 47.8" | -112.69660 STREAMGAGE INSTALLATION DATE 05/29/2019 - WY 2020 AVAILABLE PERIOD OF RECORD (POR) 05/29/2019 – Current LENGTH OF AVAILABLE POR DATA 2.34 Years | 491 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 1.10 feet Gage Height STAFF GAGES 0 CREST STAGE GAGES 0 ZERO GAGE HEIGHT ELEVATION 2,436.284 feet NAVD88 POINT OF ZERO FLOW 0.3 feet Gage Height EXTREME FOR PERIOD OF RECORD 238 cfs | 1.34 feet GH | 07/31/2021 FCDMC Annual Surface Water Report, Water Year 2021 Page 73 Location Map ash ank W Blue T 50527 ! Ca FCDMC Annual Surface Water Report, Water Year 2021 Page 74 lam ity sh Wa WY2021 Events Date of Peak 07/21/2021 07/24/2021 07/31/2021 08/10/2021 Peak Gage Height 1.24 1.29 1.34 1.24 Peak Discharge (cfs) 196 216 238 196 Hydrograph of peak WY 2021 flow event, 07/31/2021 Flood Flow Frequency There is not enough data to compute a flood flow frequency for this gage station. FCDMC Annual Surface Water Report, Water Year 2021 Page 75 Blue Tank Wash, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 2 11 12 13 14 --15 --16 17 18 19 20 21 3 22 23 24 4 25 26 27 28 29 --30 --31 --------9 -------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 16 2 0 MEAN 0 0 0 0 0 0 0 0 0 1 0 0 MAX 0 0 0 0 0 0 0 0 0 238 196 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 32 4 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 18 MEAN 0 MAX 238 MIN 0 AC_FT 35 FCDMC Annual Surface Water Report, Water Year 2021 Page 76 Box Wash, ID #47507 Site Data LOCATION Located about 3 miles northwest of Vulture Mine DRAINAGE AREA 5.9 mi2 STREAM TYPE Natural Stream JURISDICTION Maricopa County, Arizona WATERSHED Lower Hassayampa SECTION/TOWNSHIP/RANGE S20 T6N R5W LATITUDE N 33° 50' 57.4" | +33.84927 LONGITUDE W 112° 47' 56.8" | -112.79911 STREAMGAGE INSTALLATION DATE 03/11/2003 - WY 2003 AVAILABLE PERIOD OF RECORD (POR) 03/11/2003 – Current LENGTH OF AVAILABLE POR DATA 18.56 Years | 6,779 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.20 feet Gage Height STAFF GAGES 0 CREST STAGE GAGES 1 ZERO GAGE HEIGHT ELEVATION 2,256.15 feet NAVD88 POINT OF ZERO FLOW -0.3 feet Gage Height EXTREME FOR PERIOD OF RECORD 4,160 cfs | 5.65 feet | 07/18/2015 FCDMC Annual Surface Water Report, Water Year 2021 Page 77 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 78 WY2021 Events Date of Peak Peak Gage Height (feet) Peak Discharge (cfs) None Hydrograph of peak WY 2021 flow event, No runoff recorded in Water Year 2021. Flood Flow Frequency Flood Flow Frequency N=19, HEC-WRC computation (based on 19 years of data) 2-year 5-year 10-year 20-year 50-year 100-year 55 529 1,450 3,050 6,480 10,000 NOTE: These results are based on very limited data. FCDMC Annual Surface Water Report, Water Year 2021 Page 79 Box Wash, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 --6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 --29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 0 MEAN 0 MAX 0 MIN 0 AC_FT 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 80 Buckeye FRS #1, ID #44007 Site Data LOCATION Located near I-10 and the Hassayampa River DRAINAGE AREA 74 mi2 Excluding structures 2 and 3 STREAM TYPE Dam of natural drainage JURISDICTION Maricopa County, Arizona WATERSHED Lower Hassyampa SECTION/TOWNSHIP/RANGE S03 T1N R5W LATITUDE N 33° 27' 27.9" | +33.45775 LONGITUDE W 112° 44' 59.9" | -112.74998 STREAMGAGE INSTALLATION DATE 07/26/1983 - WY 1983 AVAILABLE PERIOD OF RECORD (POR) 11/23/1987 - Current LENGTH OF AVAILABLE POR DATA 33.86 Years | 12,366 Days DATA GAPS IN POR 01/21/2010 - 03/01/2010, 05/28/2021 – 07/11/2021 STAGE GAGE ELEVATION 0.20 feet Gage Height STAFF GAGES 6 CREST STAGE GAGES 0 ZERO GAGE HEIGHT ELEVATION 1,062.00 feet NAVD88 POINT OF ZERO FLOW (UNCONTROLLED OUTLET) 0.00 feet Gage Height SPILLWAY ELEVATION 18.7 feet Gage Height TOP OF DAM ELEVATION 27.5 feet Gage Height FCDMC Annual Surface Water Report, Water Year 2021 Page 81 Watershed Map Buckeye 1 3 2 FCDMC Annual Surface Water Report, Water Year 2021 Page 82 WY2021 Events Date of Peak 07/25/2021 09/02/2021 Peak Gage Height (feet) 1.03 0.83 Peak Volume (ac-ft) 9.5 0.5 Hydrograph of peak WY 2021 impoundment event, 07/25/2021 FCDMC Annual Surface Water Report, Water Year 2021 Page 83 Percent Spillway Capacity 0.5 0.4 Buckeye FRS #1, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 ----2 ----1 3 ----4 ----5 ----6 ----7 ----8 ------9 --------10 --------11 --------12 ----13 ------14 --------15 --------16 --------17 ------18 ------19 ----20 ----21 --22 --23 --24 ----25 --2 26 ------27 ----28 ------29 --------30 --------31 -----------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 --2 0 1 MEAN 0 0 0 0 0 0 0 0 --0 0 0 MAX 0 0 0 0 0 0 0 0 --9 0 6 MIN 0 0 0 0 0 0 0 0 --0 0 0 AC_FT 0 0 0 0 0 0 0 0 --4 0 1 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 3 MEAN 0 MAX 9 MIN 0 AC_FT 5 NOTE: Station was down from May 28 – July 11, 2021 due to a radio connection problem. No events were missed. FCDMC Annual Surface Water Report, Water Year 2021 Page 84 Buckeye FRS #1, volume data Volume, in acre-feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 ----2 ----3 ----4 ----5 ----6 ----7 ----8 ------9 --------10 --------11 --------12 ----13 ------14 --------15 --------16 --------17 ------18 ------19 ----20 ----21 --22 --23 --24 ----25 --1 26 ------27 ----28 ------29 --------30 --------31 -----------------------------------------------------------------------------------------MEAN 0 0 0 0 0 0 0 0 --0 0 0 MAX 0 0 0 0 0 0 0 0 --9 0 0 MIN 0 0 0 0 0 0 0 0 --0 0 0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0 MAX 9 MIN 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 85 Buckeye FRS #1, stage data Depth, in feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 ----0.2 0.2 2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 ----0.2 0.4 3 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 ----0.2 0.2 4 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 ----0.2 0.2 5 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 ----0.2 0.2 6 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 ----0.2 0.2 7 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 ----0.2 0.2 8 0.2 0.2 0.2 0.2 0.2 0.2 --0.2 ----0.2 0.2 9 0.2 0.2 0.2 0.2 0.2 0.2 --------0.2 0.2 10 0.2 0.2 0.2 0.2 0.2 0.2 --------0.2 0.2 11 0.2 0.2 0.2 0.2 0.2 0.2 --------0.2 0.2 12 0.2 0.2 0.2 0.2 0.2 0.2 0.2 ----0.2 0.2 0.2 13 0.2 --0.2 0.2 0.2 0.2 0.2 ----0.2 0.2 0.2 14 0.2 --0.2 0.2 0.2 0.2 0.2 ------0.2 0.2 15 0.2 --0.2 --0.2 0.2 0.2 ----0.2 0.2 0.2 16 0.2 0.2 0.2 --0.2 0.2 0.2 ------0.2 0.2 17 0.2 0.2 0.2 --0.2 0.2 0.2 0.2 ----0.2 0.2 18 0.2 0.2 0.2 --0.2 0.2 0.2 0.2 ----0.2 0.2 19 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 ----0.2 0.2 20 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 ----0.2 0.2 21 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 --0.2 0.2 0.2 22 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 --0.2 0.2 0.2 23 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 --0.2 0.2 0.2 24 0.2 0.2 0.2 0.2 --0.2 0.2 0.2 --0.2 0.2 0.2 25 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 --0.4 0.2 0.2 26 0.2 --0.2 0.2 0.2 0.2 0.2 0.2 --0.3 0.2 --27 0.2 --0.2 0.2 0.2 0.2 0.2 0.2 --0.2 0.2 0.2 28 0.2 --0.2 0.2 0.2 0.2 0.2 ----0.2 0.2 0.2 29 0.2 --0.2 0.2 --0.2 0.2 ----0.2 0.2 0.2 30 0.2 --0.2 0.2 --0.2 0.2 ----0.2 0.2 0.2 31 0.2 --0.2 0.2 --0.2 ------0.2 0.2 -------------------------------------------------------------------------------MEAN 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 --0.2 0.2 0.2 MAX 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 --1.0 0.2 0.8 MIN 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 --0.2 0.2 0.2 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0.20 MAX 1.03 MIN 0.20 FCDMC Annual Surface Water Report, Water Year 2021 Page 86 Buckeye FRS #2, ID #44507 Site Data LOCATION Located north of I-10 near Miller Road DRAINAGE AREA 5.7 mi2 Excluding structure 3 STREAM TYPE Dam of natural drainage JURISDICTION Buckeye, Arizona WATERSHED Lower Hassyampa SECTION/TOWNSHIP/RANGE S07 T1N R3W LATITUDE N 33° 26' 22.3" | +33.43954 LONGITUDE W 112° 35' 47.4" | -112.59650 STREAMGAGE INSTALLATION DATE 11/11/1992 - WY 1993 AVAILABLE PERIOD OF RECORD (POR) 11/11/1992 - Current LENGTH OF AVAILABLE POR DATA 28.89 Years | 10,551 Days DATA GAPS IN POR None STAGE GAGE ELEVATION -1.39 feet Gage Height STAFF GAGES 1 ZERO GAGE HEIGHT ELEVATION 1,098.10 feet NAVD88 POINT OF ZERO FLOW -1.54 feet Gage Height SPILLWAY ELEVATION 15.0 feet Gage Height TOP OF DAM ELEVATION 20.5 feet Gage Height FCDMC Annual Surface Water Report, Water Year 2021 Page 87 Watershed Map Buckeye 3 Buckeye 2 FCDMC Annual Surface Water Report, Water Year 2021 Page 88 WY2021 Events Date of Peak Peak Gage Height (feet) Peak Volume (ac-ft) Percent Spillway Capacity 07/25/2021 -0.91 0.0 0.0 Hydrograph of peak WY 2021 impoundment event, 07/25/2021 FCDMC Annual Surface Water Report, Water Year 2021 Page 89 Buckeye FRS #2, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 --8 9 10 11 --12 --13 --14 --15 ----16 --17 18 19 20 21 22 23 24 25 1 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 1 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 3 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 2 0 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 1 MEAN 0 MAX 3 MIN 0 AC_FT 2 FCDMC Annual Surface Water Report, Water Year 2021 Page 90 Buckeye FRS #2, volume data Volume, in acre-feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 --8 9 10 11 --12 --13 --14 --15 ----16 --17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0 MAX 0 MIN 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 91 Buckeye FRS #2, stage data Depth, in feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 2 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 3 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 5 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 6 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 7 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 --- -1.4 -1.4 -1.4 -1.4 -1.4 8 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 9 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 10 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 11 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 --- -1.4 -1.4 -1.4 -1.4 12 -1.4 -1.4 -1.4 -1.4 -1.4 --0.0 -1.4 -1.4 -1.4 -1.4 -1.4 13 -1.4 -1.4 -1.4 -1.4 --0.0 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 14 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 --- -1.4 -1.4 -1.4 -1.4 -1.4 15 -1.4 -1.4 -1.4 -1.4 ----- -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 16 -1.4 -1.4 -1.4 -1.4 -1.4 --- -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 17 -1.4 -1.4 -1.4 -1.4 0.0 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 18 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 19 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 20 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 21 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 22 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 23 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 24 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 25 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.3 -1.4 -1.4 26 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 27 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 28 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 29 -1.4 -1.4 -1.4 -1.4 --- -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 30 -1.4 -1.4 -1.4 -1.4 --- -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 31 -1.4 --- -1.4 -1.4 --- -1.4 --- -1.4 --- -1.4 -1.4 -------------------------------------------------------------------------------MEAN -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 MAX -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -0.9 -1.4 -1.4 MIN -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -----------------------------------------------------------------------------WTR YR 2021 MEAN -1.39 MAX -0.91 MIN -1.39 FCDMC Annual Surface Water Report, Water Year 2021 Page 92 Buckeye FRS #3, ID #48807 Site Data LOCATION Located north of I-10 near Watson Road DRAINAGE AREA 9.3 mi2 STREAM TYPE Dam of natural drainage JURISDICTION Buckeye, Arizona WATERSHED Lower Hassyampa SECTION/TOWNSHIP/RANGE S10 T1N R3W LATITUDE N 33° 26' 49.5" | +33.44707 LONGITUDE W 112° 33' 21.4" | -112.55593 STREAMGAGE INSTALLATION DATE 11/23/1992 - WY 1993 AVAILABLE PERIOD OF RECORD (POR) 11/23/1992 - Current LENGTH OF AVAILABLE POR DATA 28.85 Years | 10,539 Days DATA GAPS IN POR None STAGE GAGE ELEVATION -4.08 feet Gage Height STAFF GAGES 1 ZERO GAGE HEIGHT ELEVATION 1,151.03 Feet NAVD88 POINT OF ZERO FLOW -4.10 feet Gage Height SPILLWAY ELEVATION 14.00 feet Gage Height TOP OF DAM ELEVATION 20.50 feet Gage Height FCDMC Annual Surface Water Report, Water Year 2021 Page 93 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 94 WY2021 Events Date of Peak 07/25/2021 08/13/2021 Peak Gage Height (feet) -1.82 -3.44 Peak Volume (ac-ft) 0.0 0.0 Hydrograph of peak WY 2021 impoundment event, 07/25/2021 FCDMC Annual Surface Water Report, Water Year 2021 Page 95 Percent Spillway Capacity 0.0 0.0 Buckeye FRS #3, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 --6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 1 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 1 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 319 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 2 0 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 1 MEAN 0 MAX 319 MIN 0 AC_FT 2 FCDMC Annual Surface Water Report, Water Year 2021 Page 96 Buckeye FRS #3, volume data Volume, in acre-feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0 MAX 0 MIN 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 97 Buckeye FRS #3, stage data Depth, in feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 2 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 3 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 4 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 5 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 6 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 7 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 8 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 9 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 10 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 11 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 12 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 13 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 14 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 15 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 16 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 17 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 18 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 19 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 20 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 21 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 22 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 23 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 24 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 25 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -3.6 -4.1 -4.1 26 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 27 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 28 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 29 -4.1 -4.1 -4.1 -4.1 --- -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 30 -4.1 -4.1 -4.1 -4.1 --- -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 31 -4.1 --- -4.1 -4.1 --- -4.1 --- -4.1 --- -4.1 -4.1 -------------------------------------------------------------------------------MEAN -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 MAX -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -1.8 -3.4 -4.1 MIN -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -----------------------------------------------------------------------------WTR YR 2021 MEAN -4.08 MAX -1.82 MIN -4.08 FCDMC Annual Surface Water Report, Water Year 2021 Page 98 Bullard Wash at Indian School Road, ID #89507 Site Data LOCATION Located near Indian School Road and Wigwam Boulevard DRAINAGE AREA 14.6 mi2 STREAM TYPE Channelized natural stream JURISDICTION Goodyear, Arizona WATERSHED White Tanks A SECTION/TOWNSHIP/RANGE S29 T2N R1W LATITUDE N 33° 29' 32.7" | +33.49242 LONGITUDE W 112° 22' 54.1" | -112.38168 STREAMGAGE INSTALLATION DATE 06/27/2006 - WY 2006 AVAILABLE PERIOD OF RECORD (POR) 06/27/2006 - Current LENGTH OF AVAILABLE POR DATA 15.26 Years | 5,575 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.50 feet Gage Height STAFF GAGES 0 CREST STAGE GAGES 0 ZERO GAGE HEIGHT ELEVATION 1,017.55 feet NAVD88 POINT OF ZERO FLOW 0.0 feet Gage Height EXTREME FOR PERIOD OF RECORD 560 cfs | 2.68 feet | 09/27/2014 FCDMC Annual Surface Water Report, Water Year 2021 Page 99 Location Map FCDMC Annual Surface Water Report, Water Year 2021 Page 100 WY2021 Events Date of Peak 07/03/2021 07/14/2021 07/25/2021 08/11/2021 08/14/2021 08/17/2021 Peak Gage Height 0.41 0.65 1.37 0.72 1.99 1.73 Peak Discharge (cfs) 11 20 54 22 281 169 Hydrograph of peak WY 2021 flow event, 08/14/2021 Flood Flow Frequency Flood Flow Frequency N=16, HEC-WRC computation (based on 16 years of data) 2-year 5-year 10-year 20-year 50-year 100-year 114 372 613 875 1,230 1,500 FCDMC Annual Surface Water Report, Water Year 2021 Page 101 Bullard Wash at Indian School Road, ID #6868 Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 34 25 5 9 4 4 5 2 30 24 4 1 12 5 4 6 3 26 22 3 2 8 6 4 4 4 25 22 9 4 11 7 5 3 5 24 22 4 1 14 4 5 4 6 27 21 4 2 18 4 5 4 7 29 20 5 4 13 1 4 5 4 8 28 18 7 3 11 4 5 5 4 9 25 17 4 1 16 4 5 5 4 10 24 16 9 6 16 4 5 4 5 11 23 15 10 5 11 4 4 7 5 12 23 8 4 4 7 4 5 9 3 13 25 4 1 1 7 4 5 5 4 14 24 3 3 6 6 4 11 56 4 15 23 3 6 6 8 4 6 9 3 16 22 3 6 4 3 4 4 8 5 17 22 3 9 1 4 8 25 3 18 20 2 11 3 5 6 8 4 19 20 5 8 3 5 4 7 4 20 20 4 4 4 5 5 5 4 21 20 4 4 8 5 5 3 4 22 19 3 8 3 5 4 3 6 23 19 2 4 3 5 4 4 6 24 18 6 3 4 4 4 4 25 17 5 8 3 7 24 4 3 26 18 5 9 3 5 12 4 6 27 22 6 12 3 4 5 4 6 28 23 6 11 3 4 4 4 6 29 23 5 --3 5 4 4 5 30 23 5 --5 8 5 2 31 30 --------5 5 -------------------------------------------------------------------------------TOTAL 729 297 86 0 145 213 0 0 104 184 229 133 MEAN 24 10 3 0 5 7 0 0 3 6 7 4 MAX 40 25 15 0 15 20 0 0 11 54 281 15 MIN 17 0 0 0 0 0 0 0 0 2 0 0 AC_FT 1447 590 171 0 287 422 0 0 206 365 454 264 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 2121 MEAN 6 MAX 281 MIN 0 AC_FT 4208 FCDMC Annual Surface Water Report, Water Year 2021 Page 102 Bullard Wash at Van Buren Street, ID #89207 Site Data LOCATION Located on Bullard Wash at Van Buren St. DRAINAGE AREA 88.3 mi2 STREAM TYPE Channelized natural stream JURISDICTION Goodyear, Arizona WATERSHED White Tanks B SECTION/TOWNSHIP/RANGE S05 T1N R1W LATITUDE N 33° 27' 0.4" | +33.4501 LONGITUDE W 112° 22' 58.0" | -112.38279 STREAMGAGE INSTALLATION DATE 12/13/2017 - WY 2018 AVAILABLE PERIOD OF RECORD (POR) 12/13/2017 - Current LENGTH OF AVAILABLE POR DATA 3.80 Years | 1,388 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.40 feet Gage Height STAFF GAGES 0 CREST STAGE GAGES 1 ZERO GAGE HEIGHT ELEVATION 973.55 feet NAVD88 POINT OF ZERO FLOW 0.0 feet Gage Height EXTREME FOR PERIOD OF RECORD 130 CFS | 2.73 feet G.H. | 08/14/2021 FCDMC Annual Surface Water Report, Water Year 2021 Page 103 Location Map W Van B ur en S t FCDMC Annual Surface Water Report, Water Year 2021 Page 104 WY2021 Events Date of Peak Peak Gage Height Peak Discharge (cfs) 08/14/2021 2.73 130 Hydrograph of peak WY 2021 flow event, 08/14/2021 Flood Flow Frequency There are not enough data to compute Flood Frequency. FCDMC Annual Surface Water Report, Water Year 2021 Page 105 Bullard Wash at Van Buren Street, ID #89207 Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 27 15 --16 17 --18 --19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 27 0 MEAN 0 0 0 0 0 0 0 0 0 0 1 0 MAX 0 0 0 0 0 0 0 0 0 0 130 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 0 53 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 27 MEAN 0 MAX 130 MIN 0 AC_FT 53 FCDMC Annual Surface Water Report, Water Year 2021 Page 106 Camelback Road at 24th Avenue Basin, ID #6807 Site Data LOCATION Near Camelback Rd and 24th Ave DRAINAGE AREA Undetermined STREAM TYPE Flood control basin JURISDICTION Phoenix, Arizona WATERSHED Lower ACDC SECTION/TOWNSHIP/RANGE S13 T2N R2E LATITUDE N 33° 30' 35.5" | +33.50986 LONGITUDE W 112° 06' 37.8" | -112.11050 STREAMGAGE INSTALLATION DATE 10/01/2015 - WY 2016 AVAILABLE PERIOD OF RECORD (POR) 10/01/2015 - Current LENGTH OF AVAILABLE POR DATA 6.00 Years | 2,192 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.50 feet Gage Height STAFF GAGES 0 ZERO GAGE HEIGHT ELEVATION 1,132.31 feet NAVD88 POINT OF ZERO FLOW 0.00 feet Gage Height SPILLWAY CREST ELEVATION No spillway TOP OF BASIN ELEVATION 6.4 feet Gage Height FCDMC Annual Surface Water Report, Water Year 2021 Page 107 Location Map FCDMC Annual Surface Water Report, Water Year 2021 Page 108 WY2021 Events Date of Peak Peak Gage Height (feet) Peak Volume (ac-ft) Percent Spillway Capacity 08/14/2021 1.02 4.1 15.8 Hydrograph of peak WY 2021 impoundment event, 08/14/2021 FCDMC Annual Surface Water Report, Water Year 2021 Page 109 Camelback Road at 24th Avenue Basin, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 0 MEAN 0 MAX 0 MIN 0 AC_FT 0 NOTE: There is no discharge rating for this site at this time. FCDMC Annual Surface Water Report, Water Year 2021 Page 110 Camelback Road at 24th Avenue Basin, volume data Volume, in acre-feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 3 15 1 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 4 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0 MAX 4 MIN 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 111 Camelback Road at 24th Avenue Basin, stage data Depth, in feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 2 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 3 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 4 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 6 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 7 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 8 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 9 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 10 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 11 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 12 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 13 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 14 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.8 0.5 15 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 16 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 17 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 18 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 19 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 20 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 21 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 22 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 23 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 24 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 25 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 26 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 27 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 28 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 29 0.5 0.5 0.5 0.5 --0.5 0.5 0.5 0.5 0.5 0.5 0.5 30 0.5 0.5 0.5 0.5 --0.5 0.5 0.5 0.5 0.5 0.5 0.5 31 0.5 --0.5 0.5 --0.5 --0.5 --0.5 0.5 -------------------------------------------------------------------------------MEAN 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 MAX 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 1.0 0.5 MIN 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0.50 MAX 1.02 MIN 0.50 FCDMC Annual Surface Water Report, Water Year 2021 Page 112 CAP Reach #11 Dike #1, ID #8407 Site Data LOCATION Located on the CAP dike, about ½ mile west of Tatum Blvd. DRAINAGE AREA Undetermined STREAM TYPE Flood control dike JURISDICTION Phoenix, Arizona WATERSHED Upper Indian Bend SECTION/TOWNSHIP/RANGE S30 T4N R4E LATITUDE N 33° 39' 32.0" | +33.65890 LONGITUDE W 111° 58' 58.5" | -111.98293 STREAMGAGE INSTALLATION DATE 07/19/2016 - WY 2016 AVAILABLE PERIOD OF RECORD (POR) 07/19/2016 - Current LENGTH OF AVAILABLE POR DATA 5.20 Years | 1,900 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.00 feet Gage Height STAFF GAGES 1 ZERO GAGE HEIGHT ELEVATION 1,526.00 feet NAVD88 POINT OF ZERO FLOW 2.00 feet Gage Height SPILLWAY CREST ELEVATION No spillway TOP OF BASIN ELEVATION 32.0 feet Gage Height FCDMC Annual Surface Water Report, Water Year 2021 Page 113 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 114 WY2021 Events Date of Peak Peak Gage Height (feet) Peak Volume (ac-ft) None NOTE: Percent full is based on 100-year level, as there is no spillway at this location. Hydrograph of peak WY 2021 impoundment event, No impoundments recorded in Water Year 2021. FCDMC Annual Surface Water Report, Water Year 2021 Page 115 Percent Spillway Capacity CAP Reach 11 Dike #1, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 0 MEAN 0 MAX 0 MIN 0 AC_FT 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 116 CAP Reach 11 Dike #1, volume data Volume, in acre-feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0 MAX 0 MIN 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 117 CAP Reach 11 Dike #1, stage data Depth, in feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 6 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 7 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 8 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 9 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 10 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 11 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 12 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 13 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 14 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 15 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 16 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 17 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 18 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 19 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 20 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 21 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 22 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 23 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 24 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 25 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 26 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 27 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 28 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 29 0.0 0.0 0.0 0.0 --0.0 0.0 0.0 0.0 0.0 0.0 0.0 30 0.0 0.0 0.0 0.0 --0.0 0.0 0.0 0.0 0.0 0.0 0.0 31 0.0 --0.0 0.0 --0.0 --0.0 --0.0 0.0 -------------------------------------------------------------------------------MEAN 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 MAX 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 MIN 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0.00 MAX 0.00 MIN 0.00 FCDMC Annual Surface Water Report, Water Year 2021 Page 118 CAP Reach #11, Dike #2, ID #58607 Site Data LOCATION Near the 60th Street alignment with the CAP canal. DRAINAGE AREA Undetermined STREAM TYPE Flood control dike JURISDICTION Phoenix, Arizona WATERSHED Upper Indian Bend SECTION/TOWNSHIP/RANGE S33 T4N R4E LATITUDE N 33° 38' 41.9" | +33.64498 LONGITUDE W 111° 56' 50.0" | -111.94721 STREAMGAGE INSTALLATION DATE 07/19/2016 - WY 2016 AVAILABLE PERIOD OF RECORD (POR) 07/19/2016 - Current LENGTH OF AVAILABLE POR DATA 5.20 Years | 1,900 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.00 feet Gage Height STAFF GAGES 1 ZERO GAGE HEIGHT ELEVATION 1,520.50 feet NAVD88 POINT OF ZERO FLOW 2.00 feet Gage Height SPILLWAY CREST ELEVATION No spillway TOP OF BASIN ELEVATION 32.0 feet Gage Height FCDMC Annual Surface Water Report, Water Year 2021 Page 119 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 120 WY2021 Events Date of Peak Peak Gage Height (feet) Peak Volume (ac-ft) 08/13/2021 0.20 442.0 NOTE: Percent full is based on 100-year level, as there is no spillway at this location. Hydrograph of peak 2021 impoundment event, 08/13/2021 FCDMC Annual Surface Water Report, Water Year 2021 Page 121 Percent Spillway Capacity 8.9 CAP Reach 11 Dike #2, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 3 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 0 MEAN 0 MAX 3 MIN 0 AC_FT 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 122 CAP Reach 11 Dike #2, volume data Volume, in acre-feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 12 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 442 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0 MAX 442 MIN 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 123 CAP Reach 11 Dike #2, stage data Depth, in feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 6 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 7 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 8 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 9 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 10 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 11 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 12 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 13 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 14 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 15 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 16 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 17 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 18 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 19 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 20 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 21 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 22 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 23 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 24 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 25 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 26 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 27 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 28 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 29 0.0 0.0 0.0 0.0 --0.0 0.0 0.0 0.0 0.0 0.0 0.0 30 0.0 0.0 0.0 0.0 --0.0 0.0 0.0 0.0 0.0 0.0 0.0 31 0.0 --0.0 0.0 --0.0 --0.0 --0.0 0.0 -------------------------------------------------------------------------------MEAN 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 MAX 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.2 0.0 MIN 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0.00 MAX 0.20 MIN 0.00 FCDMC Annual Surface Water Report, Water Year 2021 Page 124 CAP Reach #11, Dike #3, ID #60107 Site Data LOCATION Near Hayden Road and the CAP DRAINAGE AREA Undetermined STREAM TYPE Flood control basin JURISDICTION Scottsdale, Arizona WATERSHED Upper Indian Bend SECTION/TOWNSHIP/RANGE S01 T3N R4E LATITUDE N 33° 38' 02.9" | +33.63414 LONGITUDE W 111° 54' 02.8" | -111.90079 STREAMGAGE INSTALLATION DATE 07/19/2016 - WY 2016 AVAILABLE PERIOD OF RECORD (POR) 07/19/2016 - Current LENGTH OF AVAILABLE POR DATA 5.20 Years | 1,900 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.00 feet Gage Height STAFF GAGES 1 ZERO GAGE HEIGHT ELEVATION 1,519.60 feet NAVD88 POINT OF ZERO FLOW 2.00 feet Gage Height SPILLWAY CREST ELEVATION No spillway TOP OF BASIN ELEVATION 29.0 feet Gage Height FCDMC Annual Surface Water Report, Water Year 2021 Page 125 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 126 WY2021 Events Date of Peak Peak Gage Height (feet) Peak Volume (ac-ft) None NOTE: Percent full is based on 100-year level, as there is no spillway at this location. Hydrograph of peak 2021 impoundment event, No impoundments recorded in Water Year 2021. FCDMC Annual Surface Water Report, Water Year 2021 Page 127 Percent Spillway Capacity CAP Reach 11 Dike #3, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 0 MEAN 0 MAX 0 MIN 0 AC_FT 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 128 CAP Reach 11 Dike #3, volume data Volume, in acre-feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0 MAX 0 MIN 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 129 CAP Reach 11 Dike #3, stage data Depth, in feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 6 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 7 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 8 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 9 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 10 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 11 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 12 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 13 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 14 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 15 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 16 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 17 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 18 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 19 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 20 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 21 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 22 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 23 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 24 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 25 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 26 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 27 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 28 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 29 0.0 0.0 0.0 0.0 --0.0 0.0 0.0 0.0 0.0 0.0 0.0 30 0.0 0.0 0.0 0.0 --0.0 0.0 0.0 0.0 0.0 0.0 0.0 31 0.0 --0.0 0.0 --0.0 --0.0 --0.0 0.0 -------------------------------------------------------------------------------MEAN 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 MAX 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 MIN 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0.00 MAX 0.00 MIN 0.00 FCDMC Annual Surface Water Report, Water Year 2021 Page 130 CAP Reach #11, Dike #4, ID #59807 Site Data LOCATION Near the CAP and Thompson Peak Parkway DRAINAGE AREA Undetermined STREAM TYPE Flood control dike JURISDICTION Scottsdale, Arizona WATERSHED Upper Indian Bend SECTION/TOWNSHIP/RANGE S08 T3N R5E LATITUDE N 33° 37' 22.9" | +33.62304 LONGITUDE W 111° 52' 02.1" | -111.86725 STREAMGAGE INSTALLATION DATE 07/19/2016 - WY 2016 AVAILABLE PERIOD OF RECORD (POR) 07/19/2016 - Current LENGTH OF AVAILABLE POR DATA 5.20 Years | 1,900 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.00 feet Gage Height STAFF GAGES 1 ZERO GAGE HEIGHT ELEVATION 1,510.00 feet NAVD88 POINT OF ZERO FLOW 2.00 feet Gage Height SPILLWAY CREST ELEVATION No spillway TOP OF BASIN ELEVATION 34.0 feet Gage Height FCDMC Annual Surface Water Report, Water Year 2021 Page 131 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 132 WY2021 Events Date of Peak Peak Gage Height (feet) Peak Volume (ac-ft) None NOTE: Percent full is based on 100-year level, as there is no spillway at this location. Hydrograph of peak 2021 impoundment event No impoundments were recorded during Water Year 2021. FCDMC Annual Surface Water Report, Water Year 2021 Page 133 Percent Spillway Capacity CAP Reach 11 Dike #4, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 0 MEAN 0 MAX 0 MIN 0 AC_FT 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 134 CAP Reach 11 Dike #4, volume data Volume, in acre-feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 32 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------MEAN 0 0 0 0 0 0 0 0 0 1 0 0 MAX 0 0 0 0 0 0 0 0 0 127 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0 MAX 127 MIN 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 135 CAP Reach 11 Dike #4, stage data Depth, in feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 6 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 7 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 8 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 9 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 10 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 11 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 12 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 13 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 14 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 15 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 16 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 17 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 18 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 19 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 20 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 21 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 22 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 23 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 24 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 25 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 26 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 27 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 28 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 29 0.0 0.0 0.0 0.0 --0.0 0.0 0.0 0.0 0.0 0.0 0.0 30 0.0 0.0 0.0 0.0 --0.0 0.0 0.0 0.0 0.0 0.0 0.0 31 0.0 --0.0 0.0 --0.0 --0.0 --0.0 0.0 -------------------------------------------------------------------------------MEAN 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 MAX 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.0 0.0 MIN 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0.00 MAX 0.05 MIN 0.00 FCDMC Annual Surface Water Report, Water Year 2021 Page 136 Casandro Wash, ID #52007 Site Data LOCATION Located near the intersection of Lazy Fox Road and US 60 DRAINAGE AREA 0.58 mi2 STREAM TYPE Culvert / Natural Stream JURISDICTION Wickenburg, Arizona WATERSHED Lower Hassayampa SECTION/TOWNSHIP/RANGE S10 T7N R5W LATITUDE N 33° 57' 43.3" | +33.96204 LONGITUDE W 112° 45' 55.0" | -112.76528 STREAMGAGE INSTALLATION DATE 07/12/1994 - WY 1994 AVAILABLE PERIOD OF RECORD (POR) 07/12/1994 - Current LENGTH OF AVAILABLE POR DATA 27.22 Years | 9,943 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.73 feet Gage Height STAFF GAGES 0 CREST STAGE GAGES 1 ZERO GAGE HEIGHT ELEVATION 2,241.74 feet NAVD88 POINT OF ZERO FLOW 1.23 feet Gage Height EXTREME FOR PERIOD OF RECORD 668 cfs | 8.00 feet | 07/18/2015 FCDMC Annual Surface Water Report, Water Year 2021 Page 137 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 138 WY2021 Events Date of Peak 07/25/2021 08/11/2021 Peak Gage Height (feet) 2.77 2.02 Peak Discharge (cfs) 146 86 Hydrograph of peak WY 2021 flow event, 07/25/2021 Flood Flow Frequency Flood Flow Frequency N=28, HEC-WRC computation (based on 28 years of data) 2-year 5-year 10-year 20-year 50-year 100-year 115 273 411 565 789 974 NOTE: These results are based on limited data. FCDMC Annual Surface Water Report, Water Year 2021 Page 139 Casandro Wash, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 1 26 27 28 29 30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 3 1 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 146 86 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 11 5 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 4 MEAN 0 MAX 146 MIN 0 AC_FT 16 FCDMC Annual Surface Water Report, Water Year 2021 Page 140 Casandro Dam, ID #53007 Site Data LOCATION In Wickenburg north and west of US 60 and Mariposa Avenue DRAINAGE AREA 1.2 mi2 STREAM TYPE Dam of natural drainage JURISDICTION Wickenburg, Arizona WATERSHED Lower Hassayampa SECTION/TOWNSHIP/RANGE S11 T7N R5W LATITUDE N 33° 58' 02.8" | +33.96744 LONGITUDE W 112° 44' 54.7" | -112.74853 STREAMGAGE INSTALLATION DATE 08/15/1996 - WY 1996 AVAILABLE PERIOD OF RECORD (POR) 08/15/1996 - Current LENGTH OF AVAILABLE POR DATA 25.13 Years | 9,178 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.19 feet Gage Height STAFF GAGES 5 ZERO GAGE HEIGHT ELEVATION 2,136.66 feet NAVD88 POINT OF ZERO FLOW 0.00 feet Gage Height SPILLWAY ELEVATION 20.34 feet Gage Height TOP OF DAM ELEVATION 28.75 feet Gage Height FCDMC Annual Surface Water Report, Water Year 2021 Page 141 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 142 WY2021 Events Date of Peak Peak Gage Height (feet) Peak Volume (ac-ft) Percent Spillway Capacity 07/25/2021 2.63 2.0 1.7 Hydrograph of peak 2021 impoundment event, 07/25/2021 FCDMC Annual Surface Water Report, Water Year 2021 Page 143 Casandro Dam, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 --1 26 --27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 1 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 9 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 2 0 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 1 MEAN 0 MAX 9 MIN 0 AC_FT 2 FCDMC Annual Surface Water Report, Water Year 2021 Page 144 Casandro Dam, volume data Volume, in acre-feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 --26 --27 28 29 --30 --31 ---------------------------------------------------------------------------------------MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 2 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0 MAX 2 MIN 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 145 Casandro Dam, stage data Depth, in feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 3 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 4 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 5 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 6 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 7 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 8 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 9 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 10 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 11 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 12 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 13 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 14 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 15 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 16 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 17 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 18 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 19 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 20 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 21 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 22 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 23 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 24 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 25 0.2 0.2 0.2 --0.2 0.2 0.2 0.2 0.2 0.5 0.2 0.2 26 0.2 0.2 0.2 --0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 27 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 28 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 29 0.2 0.2 0.2 0.2 --0.2 0.2 0.2 0.2 0.2 0.2 0.2 30 0.2 0.2 0.2 0.2 --0.2 0.2 0.2 0.2 0.2 0.2 0.2 31 0.2 --0.2 0.2 --0.2 --0.2 --0.2 0.2 -------------------------------------------------------------------------------MEAN 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 MAX 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 2.6 0.2 0.2 MIN 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0.19 MAX 2.63 MIN 0.19 FCDMC Annual Surface Water Report, Water Year 2021 Page 146 Cave Buttes Dam Pool, ID #19517 Site Data LOCATION Located about 1 mile west of Cave Creek Road and 1/2 mile south of Jomax Road DRAINAGE AREA 191 mi2 STREAM TYPE Dam on natural drainage JURISDICTION Phoenix, Arizona WATERSHED Cave Creek SECTION/TOWNSHIP/RANGE S03 T4N R3E LATITUDE N 33° 43' 01.3" | +33.71702 LONGITUDE W 112° 02' 40.2" | -112.04451 STREAMGAGE INSTALLATION DATE 01/25/1984 - WY 1984 AVAILABLE PERIOD OF RECORD (POR) 10/01/1987 - Current LENGTH OF AVAILABLE POR DATA 34.00 Years | 12,419 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 1.90 feet Gage Height STAFF GAGES 24 ZERO GAGE HEIGHT ELEVATION 1,562.30 feet NAVD88 POINT OF ZERO FLOW 0.00 feet Gage Height SPILLWAY ELEVATION 97.1 feet Gage Height TOP OF DAM ELEVATION 119.1 feet Gage Height FCDMC Annual Surface Water Report, Water Year 2021 Page 147 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 148 WY2021 Events Date of Peak 07/24/2021 07/25/2021 08/12/2021 08/19/2021 Peak Gage Height (feet) 8.30 7.58 2.74 14.26 Peak Volume (ac-ft) 8.3 5.4 0.0 129.3 Hydrograph of peak 2021 impoundment event, 08/19/2021 FCDMC Annual Surface Water Report, Water Year 2021 Page 149 Percent Spillway Capacity 0.0 0.0 0.0 0.3 Cave Buttes Dam Pool, volume data Volume, in acre-feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 --12 13 --14 15 --16 17 18 2 19 33 20 21 22 23 2 24 1 25 1 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------MEAN 0 0 0 0 0 0 0 0 0 0 1 0 MAX 0 0 0 0 0 0 0 0 0 8 129 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0 MAX 129 MIN 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 150 Cave Buttes Dam Pool, stage data Depth, in feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 2 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 3 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 4 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 5 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 6 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 7 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 8 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 10 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 11 1.9 1.9 --1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 12 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 2.0 1.9 13 1.9 1.9 --1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 14 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 15 1.9 1.9 --1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 16 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 17 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 18 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 3.4 1.9 19 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 9.5 1.9 20 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 2.0 1.9 21 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 22 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 23 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 3.4 1.9 1.9 24 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 3.2 1.9 1.9 25 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 3.0 1.9 1.9 26 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 2.1 1.9 1.9 27 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 28 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 29 1.9 1.9 1.9 1.9 --1.9 1.9 1.9 1.9 1.9 1.9 1.9 30 1.9 1.9 1.9 1.9 --1.9 1.9 1.9 1.9 1.9 1.9 1.9 31 1.9 --1.9 1.9 --1.9 --1.9 --1.9 1.9 -------------------------------------------------------------------------------MEAN 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 2.0 2.2 1.9 MAX 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 8.3 14.3 1.9 MIN 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 -----------------------------------------------------------------------------WTR YR 2021 MEAN 1.94 MAX 14.26 MIN 1.90 FCDMC Annual Surface Water Report, Water Year 2021 Page 151 Cave Buttes Dam Outlet, ID #19507 Site Data LOCATION Located about 1 mile west of Cave Creek Road and 1/2 mile south of Jomax Road DRAINAGE AREA 191 mi2 STREAM TYPE Engineered Channel JURISDICTION Phoenix, Arizona WATERSHED Upper ACDC SECTION/TOWNSHIP/RANGE S03 T4N R3E LATITUDE N 33° 43' 01.3" | +33.71702 LONGITUDE W 112° 02' 40.2" | -112.04451 STREAMGAGE INSTALLATION DATE 01/25/1984 - WY 1984 AVAILABLE PERIOD OF RECORD (POR) 07/30/1992 - Current LENGTH OF AVAILABLE POR DATA 29.17 Years | 10,655 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.83 feet Gage Height STAFF GAGES 1 ZERO GAGE HEIGHT ELEVATION 1,558.10 feet NAVD88 POINT OF ZERO FLOW 0.0 feet Gage Height EXTREME FOR PERIOD OF RECORD 522 cfs | 6.43 feet | 08/24/1992 FCDMC Annual Surface Water Report, Water Year 2021 Page 152 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 153 WY2021 Events Date of Peak 07/23/2021 07/25/2021 08/19/2021 Peak Gage Height 3.65 3.00 3.81 Peak Discharge (cfs) 111 75 122 Hydrograph of peak WY 2021 flow event, 08/19/2021 Flood Flow Frequency Flows past this gage are regulated by Cave Buttes Dam directly upstream. Flood Flow Frequency is therefore not valid. FCDMC Annual Surface Water Report, Water Year 2021 Page 154 Cave Buttes Dam Outlet, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 --12 59 13 --103 14 242 15 --163 16 73 17 18 17 19 75 20 21 22 23 27 24 20 25 19 26 4 27 1 28 2 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 73 732 0 MEAN 0 0 0 0 0 0 0 0 0 2 24 0 MAX 0 0 0 0 0 0 0 0 0 111 622 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 145 1451 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 805 MEAN 2 MAX 622 MIN 0 AC_FT 1596 FCDMC Annual Surface Water Report, Water Year 2021 Page 155 Cave Creek at Ashdale Ranger Station, ID #21307 Site Data LOCATION About 1 mile west of the Seven Springs Campgrounds DRAINAGE AREA 33 mi2 STREAM TYPE Natural Stream JURISDICTION Maricopa County, Arizona WATERSHED Cave Creek SECTION/TOWNSHIP/RANGE S07 T7N R5E LATITUDE N 33° 57' 44.2" | +33.96228 LONGITUDE W 111° 52' 33.8" | -111.87605 STREAMGAGE INSTALLATION DATE 02/25/2009 - WY 2009 AVAILABLE PERIOD OF RECORD (POR) 02/25/2009 - Present LENGTH OF AVAILABLE POR DATA 12.60 Years | 4,601 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 1.24 feet Gage Height STAFF GAGES 0 CREST STAGE GAGES 0 ZERO GAGE HEIGHT ELEVATION 3,256.78 feet NAVD88 POINT OF ZERO FLOW 0.0 feet Gage Height EXTREME FOR PERIOD OF RECORD 8,735 cfs | 11.24 feet GH | 08/19/2014 FCDMC Annual Surface Water Report, Water Year 2021 Page 156 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 157 WY2021 Events Date of Peak 07/23/2021 07/25/2021 07/29/2021 08/18/2021 Peak Gage Height 3.59 4.19 8.03 6.70 Peak Discharge (cfs) 367 559 2,736 2,027 Hydrograph of peak WY 2021 flow event, 07/29/2021 Flood Flow Frequency Flood Flow Frequency N=13, HEC-WRC computation (based on 13 years of data) 2-year 5-year 10-year 20-year 50-year 100-year 1,060 4,630 7,840 10,900 14,300 16,400 NOTE: Data based on very limited data. FCDMC Annual Surface Water Report, Water Year 2021 Page 158 Cave Creek at Ashdale RS, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 54 2 54 3 52 4 52 5 --52 6 51 7 52 8 51 9 51 10 51 11 51 12 51 13 50 14 51 15 50 16 50 17 49 18 153 50 19 53 50 20 52 49 21 54 50 22 54 49 23 35 52 49 24 53 49 25 52 52 49 26 8 52 50 27 52 52 28 52 53 29 --133 52 52 30 --12 51 52 31 --------52 -------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 240 836 1526 MEAN 0 0 0 0 0 0 0 0 0 8 27 51 MAX 0 0 0 0 0 0 0 0 0 2736 2027 59 MIN 0 0 0 0 0 0 0 0 0 0 0 47 AC_FT 0 0 0 0 0 0 0 0 0 477 1658 3026 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 2602 MEAN 7 MAX 2736 MIN 0 AC_FT 5161 FCDMC Annual Surface Water Report, Water Year 2021 Page 159 Cave Creek at Spur Cross, ID #20707 Site Data LOCATION Near the Spur Cross Conservation Area DRAINAGE AREA 72.9 mi2 STREAM TYPE Natural Stream JURISDICTION Cave Creek, Arizona WATERSHED Cave Creek SECTION/TOWNSHIP/RANGE S04 T6N R4E LATITUDE N 33° 53' 16.6" | +33.88793 LONGITUDE W 111° 57' 12.8" | -111.95355 STREAMGAGE INSTALLATION DATE 06/16/1993 - WY 1993 AVAILABLE PERIOD OF RECORD (POR) 06/16/1993 - Current LENGTH OF AVAILABLE POR DATA 28.29 Years | 10,334 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 2.64 feet Gage Height STAFF GAGES 2 CREST STAGE GAGES 1 ZERO GAGE HEIGHT ELEVATION 2,260.03 feet NAVD88 POINT OF ZERO FLOW 2.3 feet Gage Height EXTREME FOR PERIOD OF RECORD 14,000 cfs | 16.40 feet | 09/03/2005 FCDMC Annual Surface Water Report, Water Year 2021 Page 160 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 161 WY2021 Events Date of Peak 07/29/2021 08/18/2021 Peak Gage Height (feet) 6.74 7.11 Peak Discharge (cfs) 1,124 1,376 Hydrograph of peak WY 2021 flow event, 08/18/2021 Flood Flow Frequency Flood Flow Frequency N=41, HEC-WRC computation (based on 41 years of data) 2-year 5-year 10-year 20-year 50-year 100-year 894 3,180 6,060 10,200 18,100 26,400 NOTE: These results are based on limited data. FCDMC Annual Surface Water Report, Water Year 2021 Page 162 Cave Creek at Spur Cross, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 1 1 1 1 16 --1 1 1 1 --1 2 1 1 1 1 15 --1 1 1 1 1 1 3 1 1 1 1 15 1 1 1 1 1 1 4 1 1 1 1 14 1 1 1 1 1 1 5 1 1 1 1 13 1 1 1 1 1 1 6 1 1 1 1 13 1 1 1 1 1 1 7 1 1 1 1 14 1 1 1 1 1 1 8 1 1 1 1 14 1 1 1 1 1 1 9 1 1 1 1 14 1 1 1 1 --1 10 1 1 1 1 15 1 1 1 1 1 1 11 1 1 1 1 15 1 1 1 1 1 1 12 1 1 1 1 16 1 1 1 1 --1 13 1 1 1 1 17 1 1 1 1 1 14 1 1 1 1 17 1 1 1 1 1 1 15 1 1 1 1 17 1 1 1 1 --1 16 1 1 1 1 17 1 1 1 1 1 17 1 1 1 1 1 1 1 1 1 1 1 18 1 1 1 1 1 1 1 1 1 66 1 19 1 1 1 1 --1 1 1 1 1 1 20 1 1 1 1 --1 1 1 1 1 1 21 --1 1 1 --1 1 1 1 1 1 22 1 1 1 1 1 1 1 1 1 1 23 1 1 1 1 17 1 1 1 2 1 1 24 1 1 1 1 --1 1 1 1 1 1 25 1 1 1 --1 1 1 --1 1 26 1 1 1 1 --1 1 1 --1 1 27 1 1 1 1 --1 1 1 --1 1 28 1 1 1 1 --1 1 1 --1 1 29 1 1 1 1 --1 1 1 115 1 1 30 1 1 1 10 --1 1 1 1 1 1 1 31 1 --1 20 --1 --1 ----1 -------------------------------------------------------------------------------TOTAL 28 29 29 56 354 2 28 27 27 47 71 27 MEAN 1 1 1 2 13 0 1 1 1 2 2 1 MAX 1 1 1 22 18 1 1 1 1 1124 1376 1 MIN 1 1 1 1 1 0 1 1 1 1 1 1 AC_FT 56 58 57 112 702 4 56 54 53 93 140 53 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 725 MEAN 2 MAX 1376 MIN 0 AC_FT 1438 FCDMC Annual Surface Water Report, Water Year 2021 Page 163 Cave Creek, ID #19007 Site Data LOCATION In Cave Creek near Rancho Manana DRAINAGE AREA 115.8 mi2 STREAM TYPE Natural Stream JURISDICTION Cave Creek, Arizona WATERSHED Cave Creek SECTION/TOWNSHIP/RANGE S29 T6N R4E LATITUDE N 33° 49' 48.9" | +33.83024 LONGITUDE W 111° 58' 04.0" | -111.96778 STREAMGAGE INSTALLATION DATE 05/28/2003 - WY 2002 AVAILABLE PERIOD OF RECORD (POR) 05/28/2003 - Current LENGTH OF AVAILABLE POR DATA 18.35 Years | 6,701 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.25 feet Gage Height STAFF GAGES 0 CREST STAGE GAGES 1 ZERO GAGE HEIGHT ELEVATION 1,989.20 feet NAVD88 POINT OF ZERO FLOW 0.00 feet Gage Height EXTREME FOR PERIOD OF RECORD 17,190 cfs | 12.75 feet | 08/19/2014 FCDMC Annual Surface Water Report, Water Year 2021 Page 164 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 165 WY2021 Events Date of Peak 07/23/2021 07/23/2021 07/25/2021 07/29/2021 08/12/2021 08/18/2021 Peak Gage Height (feet) 1.79 2.96 3.14 4.61 6.06 7.65 Peak Discharge (cfs) 28 229 267 686 2,150 5,178 Hydrograph of peak WY 2021 flow event, 08/18/2021 Flood Flow Frequency Flood Flow Frequency N=19, HEC-WRC computation (based on 19 years of data) 2-year 5-year 10-year 20-year 50-year 100-year 1,980 5,530 9,630 15,400 26,200 37,700 NOTE: These results are based on limited data. FCDMC Annual Surface Water Report, Water Year 2021 Page 166 Cave Creek, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 6 4 2 5 4 3 4 4 4 4 5 5 4 5 6 23 4 5 7 93 4 5 8 4 5 9 4 5 10 4 5 11 4 5 12 62 5 13 5 5 14 5 15 5 16 5 17 5 18 251 5 19 29 5 20 9 4 21 6 4 22 6 4 23 29 5 4 24 8 5 4 25 28 4 4 26 19 4 4 27 4 4 4 28 4 2 29 --38 5 30 --47 4 31 --------10 4 -------------------------------------------------------------------------------TOTAL 0 0 0 116 0 0 0 1 3 184 454 125 MEAN 0 0 0 4 0 0 0 0 0 6 15 4 MAX 0 0 0 --0 0 0 1 1 686 5178 5 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 230 0 0 0 3 6 365 900 248 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 884 MEAN 2 MAX --- MIN 0 AC_FT 1753 FCDMC Annual Surface Water Report, Water Year 2021 Page 167 Cave Creek near Cave Creek, ID #20507 Site Data LOCATION About 1 mile south of Carefree Highway DRAINAGE AREA 123.4 mi2 STREAM TYPE Natural Stream JURISDICTION Phoenix, Arizona WATERSHED Cave Creek SECTION/TOWNSHIP/RANGE S12 T5N R3E LATITUDE N 33° 47' 09.0" | +33.78582 LONGITUDE W 112° 00' 26.1" | -112.00726 STREAMGAGE INSTALLATION DATE 05/27/1994 - WY 1994 (USGS gaged since 1958) AVAILABLE PERIOD OF RECORD (POR) 05/27/1994 - Current LENGTH OF AVAILABLE POR DATA 27.35 Years | 9,989 Days DATA GAPS IN POR 11/30/2009 - 06/16/2010 | 09/08/2013 - 10/28/2013 STAGE GAGE ELEVATION 0.00 feet Gage Height STAFF GAGES 0 CREST STAGE GAGES 0 ZERO GAGE HEIGHT ELEVATION 1,801.90 feet NAVD88 POINT OF ZERO FLOW 0.00 feet Gage Height EXTREME FOR PERIOD OF RECORD (FCD) 15,850 cfs | 10.65 feet | 08/19/2014 EXTREME FOR PERIOD OF RECORD (USGS) 13,800 cfs | 10.7 feet | 01/08/1993 FCDMC Annual Surface Water Report, Water Year 2021 Page 168 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 169 WY2021 Events Date of Peak 07/25/2021 07/29/2021 08/12/2021 08/18/2021 Peak Gage Height (feet) 0.99 1.91 3.09 4.51 Peak Discharge (cfs) 171 491 1,198 2,575 Hydrograph of peak WY 2021 flow event, 08/18/2021 Flood Flow Frequency Flood Flow Frequency N=63, HEC-WRC computation (based on 63 years of data) 2-year 5-year 10-year 20-year 50-year 100-year 1,240 3,860 6,870 11,000 18,400 25,800 FCDMC Annual Surface Water Report, Water Year 2021 Page 170 Cave Creek near Cave Creek, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 --6 7 8 9 10 11 12 38 13 14 15 16 17 18 205 19 20 21 22 23 24 25 5 26 27 28 29 --15 30 --27 31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 46 243 0 MEAN 0 0 0 0 0 0 0 0 0 1 8 0 MAX 0 0 0 0 0 0 0 0 0 491 2575 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 91 482 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 289 MEAN 1 MAX 2575 MIN 0 AC_FT 573 FCDMC Annual Surface Water Report, Water Year 2021 Page 171 Cave Creek at CAP, ID #19807 Site Data LOCATION Located about 1 mile downstream of Cave Buttes Dam DRAINAGE AREA 198 mi2 STREAM TYPE Concrete Overchute JURISDICTION Phoenix, Arizona WATERSHED Upper ACDC SECTION/TOWNSHIP/RANGE S16 T4N R3E LATITUDE N 33° 41' 38.0" | +33.69389 LONGITUDE W 112° 03' 04.0" | -112.05111 STREAMGAGE INSTALLATION DATE 04/14/2014 - WY 2014 AVAILABLE PERIOD OF RECORD (POR) 04/14/2014 - Current LENGTH OF AVAILABLE POR DATA 7.47 Years | 2,727 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.10 feet Gage Height STAFF GAGES None CREST STAGE GAGES 1 ZERO GAGE HEIGHT ELEVATION 1,505.66 feet NGVD29 POINT OF ZERO FLOW 0.0 feet Gage Height EXTREME FOR PERIOD OF RECORD 438 cfs | 0.92 feet | 08/20/2014 FCDMC Annual Surface Water Report, Water Year 2021 Page 172 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 173 WY2021 Events Date of Peak 07/24/2021 07/25/2021 08/19/2021 Peak Gage Height 0.64 0.57 0.77 Peak Discharge (cfs) 69 54 103 Hydrograph of peak WY 2021 flow event, 08/19/2021 Flood Flow Frequency There is not enough data to compute a flood flow frequency for this gage station. FCDMC Annual Surface Water Report, Water Year 2021 Page 174 Cave Creek at CAP, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 9 19 72 20 21 22 23 8 24 14 25 4 26 4 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 30 81 0 MEAN 0 0 0 0 0 0 0 0 0 1 3 0 MAX 0 0 234 0 0 0 0 0 0 69 103 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 1 0 0 0 0 0 0 60 161 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 112 MEAN 0 MAX 234 MIN 0 AC_FT 222 FCDMC Annual Surface Water Report, Water Year 2021 Page 175 Cave Creek at Cactus Road – ID #11807 Site Data LOCATION Near Cactus Road and 25th Avenue DRAINAGE AREA 33.6 mi2 below Cave Buttes Dam STREAM TYPE Basin / Outlet / Weir JURISDICTION Phoenix, Arizona WATERSHED Upper ACDC SECTION/TOWNSHIP/RANGE S13 T3N R2E LATITUDE N 33° 35' 58.9" | +33.59969 LONGITUDE W 112° 06' 43.2" | -112.11201 STREAMGAGE INSTALLATION DATE 06/27/1991 - WY 1991 AVAILABLE PERIOD OF RECORD (POR) 06/27/1991 - Current LENGTH OF AVAILABLE POR DATA 30.26 Years | 11,054 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.35 feet Gage Height STAFF GAGES 2 ZERO GAGE HEIGHT ELEVATION 1,259.36 feet NAVD88 POINT OF ZERO FLOW 0.0 feet Gage Height EXTREME FOR PERIOD OF RECORD 5,183 cfs | 12.66 feet | 08/14/2021 FCDMC Annual Surface Water Report, Water Year 2021 Page 176 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 177 WY2021 Events Date of Peak 01/25/2021 07/23/2021 07/25/2021 08/14/2021 08/17/2021 08/18/2021 Peak Gage Height (feet) 2.53 4.31 1.29 12.66 3.73 11.14 Peak Discharge (cfs) 54 124 16 5,183 104 1,567 Hydrograph of peak WY 2021 flow event, 08/14/2021 Flood Flow Frequency Flood Flow Frequency N=30, HEC-WRC computation (based on 30 years of data) 2-year 5-year 10-year 20-year 50-year 100-year 489 1,200 2,020 3,200 5,540 8,130 NOTE: These results are based on limited data. FCDMC Annual Surface Water Report, Water Year 2021 Page 178 Cave Creek at Cactus Road, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 33 14 531 15 13 16 17 54 18 204 19 131 20 150 21 62 22 4 14 23 108 1 24 40 25 15 6 26 10 3 27 28 29 1 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 25 0 0 0 0 0 162 1192 0 MEAN 0 0 0 1 0 0 0 0 0 5 38 0 MAX 0 0 0 54 0 0 0 0 0 124 5183 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 51 0 0 0 0 0 320 2365 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 1379 MEAN 4 MAX 5183 MIN 0 AC_FT 2736 FCDMC Annual Surface Water Report, Water Year 2021 Page 179 Centennial Wash near Aguila, ID #29007 Site Data LOCATION Along the Arizona and California Railroad east of SR 71 DRAINAGE AREA 93.4 MI2 STREAM TYPE Levee on natural drainage JURISDICTION Maricopa County, Arizona WATERSHED Upper Centennial SECTION/TOWNSHIP/RANGE S11 T7N R8W LATITUDE N 33° 58' 00.3" | +33.96675 LONGITUDE W 113° 04' 07.9" | -113.06887 STREAMGAGE INSTALLATION DATE 06/05/2001 - WY 2001 AVAILABLE PERIOD OF RECORD (POR) 06/05/2001 - Current LENGTH OF AVAILABLE POR DATA 20.32 Years | 7,423 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.00 feet Gage Height STAFF GAGES 0 CREST STAGE GAGES 1 ZERO GAGE HEIGHT ELEVATION 2,272.84 feet NAVD88 POINT OF ZERO FLOW -0.5 feet Gage Height EXTREME FOR PERIOD OF RECORD 606 cfs | 3.37 feet | 01/21/2010 FCDMC Annual Surface Water Report, Water Year 2021 Page 180 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 181 WY2021 Events Date of Peak 07/21/2021 08/13/2021 Peak Gage Height 0.25 0.13 Peak Discharge (cfs) 5 2 Hydrograph of peak WY 2021 flow event, 07/21/2021 Flood Flow Frequency Flood Flow Frequency N=21, HEC-WRC computation (based on 21 years of data) 2-year 5-year 10-year 20-year 50-year 100-year 29 133 283 517 996 1,520 FCDMC Annual Surface Water Report, Water Year 2021 Page 182 Centennial Wash near Aguila, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 1 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 5 2 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 1 0 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 1 MEAN 0 MAX 5 MIN 0 AC_FT 2 FCDMC Annual Surface Water Report, Water Year 2021 Page 183 Centennial Wash at Wenden, ID #27507 Site Data LOCATION In La Paz County on the eastern side of Wenden DRAINAGE AREA 586 mi2 STREAM TYPE Natural Stream JURISDICTION La Paz County WATERSHED Upper Centennial SECTION/TOWNSHIP/RANGE S32 T6N R12W LATITUDE N 33° 49' 27.2" | +33.82423 LONGITUDE W 113° 32' 01.3" | -113.53368 STREAMGAGE INSTALLATION DATE 09/16/1998 - WY 1998 AVAILABLE PERIOD OF RECORD (POR) 09/16/1998 - Current LENGTH OF AVAILABLE POR DATA 23.04 Years | 8,416 Days DATA GAPS IN POR 12/01/2002 - 07/07/2004 STAGE GAGE ELEVATION 0.00 feet Gage Height STAFF GAGES 1 CREST STAGE GAGES 1 ZERO GAGE HEIGHT ELEVATION 1,857.91 feet NAVD88 POINT OF ZERO FLOW -1.7 feet Gage Height EXTREME FOR PERIOD OF RECORD 24,250 cfs | 7.82 feet | 10/22/2000 FCDMC Annual Surface Water Report, Water Year 2021 Page 184 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 185 WY2021 Events Date of Peak 07/15/2021 08/11/2021 08/16/2021 09/01/2021 Peak Gage Height (feet) 2.59 2.41 1.42 2.74 Peak Discharge (cfs) 400 282 112 528 Hydrograph of peak WY 2021 flow event, 09/01/2021 Flood Flow Frequency Flood Flow Frequency N=23, HEC-WRC computation (based on 23 years of data) 2-year 5-year 10-year 20-year 50-year 100-year 1,550 5,180 8,980 13,600 20,900 27,100 NOTE: These results are based on limited data. FCDMC Annual Surface Water Report, Water Year 2021 Page 186 Centennial Wash at Wenden, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 49 2 --3 4 5 6 7 8 9 10 11 77 12 13 14 --12 15 --28 16 25 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 40 102 49 MEAN 0 0 0 0 0 0 0 0 0 1 3 2 MAX 0 0 0 0 0 0 0 0 0 400 282 528 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 79 203 98 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 191 MEAN 1 MAX 528 MIN 0 AC_FT 379 FCDMC Annual Surface Water Report, Water Year 2021 Page 187 Centennial Levee, ID #25707 Site Data LOCATION Located in western Maricopa County, southwest of Salome Road and I-10 DRAINAGE AREA 20 mi2 STREAM TYPE Levee on natural drainage JURISDICTION Maricopa County, Arizona WATERSHED Lower Centennial SECTION/TOWNSHIP/RANGE S17 T2N R10W LATITUDE N 33° 31' 09.9" | +33.51942 LONGITUDE W 113° 15' 37.8" | -113.26049 STREAMGAGE INSTALLATION DATE 07/09/2003 - WY 2003 AVAILABLE PERIOD OF RECORD (POR) 07/09/2003 - Current LENGTH OF AVAILABLE POR DATA 18.23 Years | 6,659 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.65 feet Gage Height STAFF GAGES 1 CREST STAGE GAGES 1 ZERO GAGE HEIGHT ELEVATION 1,260.70 feet NAVD88 POINT OF ZERO FLOW 0.3 feet Gage Height EXTREME FOR PERIOD OF RECORD 1,000 cfs | 4.50 feet | 09/09/2013 FCDMC Annual Surface Water Report, Water Year 2021 Page 188 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 189 WY2021 Events Date of Peak Peak Gage Height Peak Discharge (cfs) None Hydrograph of peak WY 2021 flow event, No runoff recorded during Water Year 2021. Flood Flow Frequency Flood Flow Frequency N=19, HEC-WRC computation (based on 19 years of data) 2-year 5-year 10-year 20-year 50-year 100-year 41 226 499 911 1,700 2,510 FCDMC Annual Surface Water Report, Water Year 2021 Page 190 Centennial Levee, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 --5 --6 --7 --8 --9 10 11 12 13 14 15 --16 17 18 19 20 21 22 23 24 25 26 27 --28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 0 MEAN 0 MAX 0 MIN 0 AC_FT 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 191 Centennial Wash at UPRR, ID #24707 Site Data LOCATION Located about 6 miles west of Arlington DRAINAGE AREA 1,817 mi2 STREAM TYPE Channelized Natural Stream JURISDICTION Maricopa County, Arizona WATERSHED Lower Centennial SECTION/TOWNSHIP/RANGE S28 T1S R6W LATITUDE N 33° 18' 35.6" | +33.30986 LONGITUDE W 112° 52' 58.4" | -112.88289 STREAMGAGE INSTALLATION DATE 02/09/1990 - WY 1990 AVAILABLE PERIOD OF RECORD (POR) 02/09/1990 - Current LENGTH OF AVAILABLE POR DATA 31.64 Years | 11,557 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 4.95 feet Gage Height STAFF GAGES 2 CREST STAGE GAGES 0 ZERO GAGE HEIGHT ELEVATION 839.04 feet NAVD88 POINT OF ZERO FLOW 5.3 feet Gage Height EXTREME FOR PERIOD OF RECORD 9,616 cfs | 9.10 feet | 02/08/1993 EXTREME OUTSIDE PERIOD OF RECORD 15,600 cfs | 09/02/1984 FCDMC Annual Surface Water Report, Water Year 2021 Page 192 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 193 WY2021 Events Date of Peak 08/14/2021 08/14/2021 Peak Gage Height (feet) 7.12 7.79 Peak Discharge (cfs) 106 250 Hydrograph of peak WY 2021 flow event, 08/14/2021 Flood Flow Frequency Flood Flow Frequency N=32, HEC-WRC computation (based on 32 years of data) 2-year 5-year 10-year 20-year 50-year 100-year 1,130 3,890 6,870 10,600 16,600 21,800 NOTE: These results are based on limited data. FCDMC Annual Surface Water Report, Water Year 2021 Page 194 Centennial Wash at SPRR, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 --6 7 8 9 10 11 12 13 14 34 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 34 0 MEAN 0 0 0 0 0 0 0 0 0 0 1 0 MAX 0 0 0 0 0 0 0 0 0 0 250 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 0 67 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 34 MEAN 0 MAX 250 MIN 0 AC_FT 67 FCDMC Annual Surface Water Report, Water Year 2021 Page 195 Centennial Tributary at Dobbins Road, ID #22807 Site Data LOCATION Located near the intersection of Dobbins Road and 435th Avenue DRAINAGE AREA 2.47 mi2 STREAM TYPE Natural Stream JURISDICTION Maricopa County, Arizona WATERSHED Lower Centennial SECTION/TOWNSHIP/RANGE S05 T1S R7W LATITUDE N 33° 21' 49.1" | +33.36364 LONGITUDE W 112° 59' 35.6" | -112.99321 STREAMGAGE INSTALLATION DATE 09/26/2012 - WY 2012 AVAILABLE PERIOD OF RECORD (POR) 10/01/2012 - Current LENGTH OF AVAILABLE POR DATA 9.00 Years | 3,287 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 1.20 feet Gage Height STAFF GAGES None CREST STAGE GAGES 1 ZERO GAGE HEIGHT ELEVATION 1,006.16 feet NAVD88 POINT OF ZERO FLOW 0.0 feet Gage Height EXTREME FOR PERIOD OF RECORD 269 cfs | 2.82 feet | 03/01/2014 FCDMC Annual Surface Water Report, Water Year 2021 Page 196 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 197 WY2021 Events Date of Peak Peak Gage Height Peak Discharge (cfs) None Hydrograph of peak WY 2021 flow event, No runoff recorded during Water Year 2021. Flood Flow Frequency There is not enough data to compute a flood flow frequency for this gage station. FCDMC Annual Surface Water Report, Water Year 2021 Page 198 Centennial Tributary at Dobbins Road, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 --6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 0 MEAN 0 MAX 0 MIN 0 AC_FT 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 199 Cline Creek, ID #66007 Site Data LOCATION Located about 1 mile north of Circle Mountain Road just off 12th Street DRAINAGE AREA 10.8 mi2 STREAM TYPE Natural Stream JURISDICTION Maricopa County, Arizona WATERSHED Skunk Creek SECTION/TOWNSHIP/RANGE S33 T7N R3E LATITUDE N 33° 54' 03.5" | +33.90097 LONGITUDE W 112° 03' 17.9" | -112.05497 STREAMGAGE INSTALLATION DATE 11/20/2001 - WY 2002 AVAILABLE PERIOD OF RECORD (POR) 11/20/2001 - Current LENGTH OF AVAILABLE POR DATA 19.86 Years | 7,255 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.95 feet Gage Height STAFF GAGES 0 CREST STAGE GAGES 1 ZERO GAGE HEIGHT ELEVATION 2,171.07 feet NAVD88 POINT OF ZERO FLOW -0.1 feet Gage Height EXTREME FOR PERIOD OF RECORD 5,850 cfs | 8.15 feet | 08/19/2014 FCDMC Annual Surface Water Report, Water Year 2021 Page 200 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 201 WY2021 Events Date of Peak 07/23/2021 08/18/2021 Peak Gage Height (feet) 6.90 1.27 Peak Discharge (cfs) 2,694 56 Hydrograph of peak WY 2021 flow event, 07/23/2021 Flood Flow Frequency Flood Flow Frequency N=20, HEC-WRC computation (based on 20 years of data) 2-year 5-year 10-year 20-year 50-year 100-year 285 1,310 2,510 4,010 6,330 8,260 NOTE(1): These results are based on very limited data. FCDMC Annual Surface Water Report, Water Year 2021 Page 202 Cline Creek, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 --4 5 6 7 8 9 --10 11 12 13 14 15 16 17 18 3 19 20 21 22 23 40 24 25 1 26 27 28 --29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 42 3 0 MEAN 0 0 0 0 0 0 0 0 0 1 0 0 MAX 0 0 0 0 0 0 0 0 0 2694 56 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 83 6 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 44 MEAN 0 MAX 2694 MIN 0 AC_FT 88 FCDMC Annual Surface Water Report, Water Year 2021 Page 203 Colter Channel at El Mirage Road, ID #85507 Site Data LOCATION Located on El Mirage Road north of Camelback Road DRAINAGE AREA 3.5 mi2 STREAM TYPE Engineered Channel JURISDICTION Phoenix, Arizona WATERSHED White Tanks A SECTION/TOWNSHIP/RANGE S13 T2N R1W LATITUDE N 33° 30' 41.1" | +33.51141 LONGITUDE W 112° 19' 25.6" | -112.32376 ARIZONA STATE PLANE E 575915 | N 913851 USGS QUAD SHEET El Mirage 7.5-Minute STREAMGAGE INSTALLATION DATE 06/29/1994 - WY 1994 AVAILABLE PERIOD OF RECORD (POR) 06/29/1994 - Current LENGTH OF AVAILABLE POR DATA 27.26 Years | 9,956 Days DATA GAPS IN POR None STAGE GAGE TYPE Pressure Transducer STAGE GAGE ELEVATION 0.10 feet Gage Height STAFF GAGES 1 CREST STAGE GAGES 1 ZERO GAGE HEIGHT ELEVATION 1,025.27 feet NAVD88 POINT OF ZERO FLOW 0.0 feet Gage Height EXTREME FOR PERIOD OF RECORD 158 cfs | 1.52 feet | 09/08/2014 FCDMC Annual Surface Water Report, Water Year 2021 Page 204 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 205 WY2021 Events Date of Peak 07/14/2021 07/25/2021 08/11/2021 08/14/2021 08/17/2021 09/01/2021 Peak Gage Height (feet) 0.82 0.85 0.82 0.90 0.62 0.40 Peak Discharge (cfs) 46 48 46 55 32 17 Hydrograph of peak WY 2021 flow event, 08/14/2021 Flood Flow Frequency Flood Flow Frequency N=27, HEC-WRC computation (based on 27 years of data) 2-year 5-year 10-year 20-year 50-year 100-year 41 71 99 134 196 257 NOTE: These results are based on very limited data. FCDMC Annual Surface Water Report, Water Year 2021 Page 206 Colter Channel, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 1 2 3 4 5 --6 7 8 9 10 3 11 6 12 1 2 13 1 14 6 8 15 1 16 17 1 9 18 19 20 21 1 22 23 24 25 8 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 3 0 0 2 0 0 0 17 25 1 MEAN 0 0 0 0 0 0 0 0 0 1 1 0 MAX 0 0 17 0 0 3 0 0 0 48 55 17 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 5 0 0 3 0 0 0 33 50 1 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 47 MEAN 0 MAX 55 MIN 0 AC_FT 93 FCDMC Annual Surface Water Report, Water Year 2021 Page 207 Columbus Wash – ID #40807 Site Data LOCATION Located at the east edge of Yuma County in the Hyder Valley DRAINAGE AREA 25.4 mi2 STREAM TYPE Encroached Natural Stream JURISDICTION Yuma County, Arizona WATERSHED Lower Gila SECTION/TOWNSHIP/RANGE S06 T4S R10W LATITUDE N 33° 06' 45.7" | +33.11268 LONGITUDE W 113° 20' 22.1" | -113.33946 STREAMGAGE INSTALLATION DATE 09/22/1999 - WY 1999 AVAILABLE PERIOD OF RECORD (POR) 09/22/1999 - Current LENGTH OF AVAILABLE POR DATA 22.03 Years | 8,045 Days DATA GAPS IN POR 12/18/2012 - 01/07/2013 STAGE GAGE ELEVATION 2.50 feet Gage Height STAFF GAGES 0 CREST STAGE GAGES 1 ZERO GAGE HEIGHT ELEVATION 713.58 feet NAVD88 POINT OF ZERO FLOW 1.0 feet Gage Height EXTREME FOR PERIOD OF RECORD 615 cfs | 2.45 feet | 09/04/2012 FCDMC Annual Surface Water Report, Water Year 2021 Page 208 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 209 WY2021 Events Date of Peak Peak Gage Height Peak Discharge (cfs) None Hydrograph of peak WY 2021 flow event, There were no runoff events recorded in Water Year 2021. Flood Flow Frequency There is not enough data to compute a flood flow frequency for this gage station. FCDMC Annual Surface Water Report, Water Year 2021 Page 210 Columbus Wash, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 0 MEAN 0 MAX 0 MIN 0 AC_FT 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 211 Copper Wash, ID #41007 Site Data LOCATION Located in western Maricopa County near the Hyder Valley DRAINAGE AREA 6.6 mi2 STREAM TYPE Natural Stream JURISDICTION Maricopa County, Arizona WATERSHED Lower Gila SECTION/TOWNSHIP/RANGE S33 T2S R10W LATITUDE N 33° 12' 20.0" | +33.20557 LONGITUDE W 113° 17' 05.4" | -113.28483 STREAMGAGE INSTALLATION DATE 02/20/2001 - WY 2001 AVAILABLE PERIOD OF RECORD (POR) 02/20/2001 - Current LENGTH OF AVAILABLE POR DATA 20.61 Years | 7,528 Days DATA GAPS IN POR 08/27/2003 - 09/04/2003 STAGE GAGE ELEVATION 0.80 feet Gage Height STAFF GAGES 0 CREST STAGE GAGES 1 ZERO GAGE HEIGHT ELEVATION 1,064.00 feet NAVD88 POINT OF ZERO FLOW 0.1 feet Gage Height EXTREME FOR PERIOD OF RECORD 3,780 cfs | 5.69 feet | 08/27/2003 FCDMC Annual Surface Water Report, Water Year 2021 Page 212 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 213 WY2021 Events Date of Peak Peak Gage Height (feet) Peak Discharge (cfs) None Hydrograph of peak WY 2021 flow event, No runoff recorded in Water Year 2021. Flood Flow Frequency Flood Flow Frequency N=21, HEC-WRC computation (based on 21 years of data) 2-year 5-year 10-year 20-year 50-year 100-year 35 243 601 1,210 2,500 3,930 NOTE: These results are based on very limited data. FCDMC Annual Surface Water Report, Water Year 2021 Page 214 Copper Wash, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 0 MEAN 0 MAX 0 MIN 0 AC_FT 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 215 Crossroads Park Basin, ID #33007 Site Data LOCATION Near Greenfield and Ray Roads DRAINAGE AREA 15.7 mi2 STREAM TYPE Flood control basin JURISDICTION Gilbert, Arizona WATERSHED Lower East Maricopa Floodway SECTION/TOWNSHIP/RANGE S21 T1S R6E LATITUDE N 33° 19' 39.7" | +33.32770 LONGITUDE W 111° 44' 47.9" | -111.74665 STREAMGAGE INSTALLATION DATE 12/18/1995 - WY 1996 AVAILABLE PERIOD OF RECORD (POR) 12/18/1995 - Current LENGTH OF AVAILABLE POR DATA 25.79 Years | 9,419 Days DATA GAPS IN POR None STAGE GAGE TYPE Pressure Transducer STAGE GAGE ELEVATION 1.33 feet Gage Height STAFF GAGES 0 ZERO GAGE HEIGHT ELEVATION 1,248.46 feet NAVD88 POINT OF ZERO FLOW None - Pump Control SPILLWAY CREST ELEVATION None TOP OF BASIN ELEVATION 23.3 feet Gage Height FCDMC Annual Surface Water Report, Water Year 2021 Page 216 Location Map FCDMC Annual Surface Water Report, Water Year 2021 Page 217 WY2021 Events Date of Peak Peak Gage Height (feet) None Hydrograph of peak 2021 impoundment event, No impoundments recorded during Water Year 2021. FCDMC Annual Surface Water Report, Water Year 2021 Page 218 Peak Volume (ac-ft) Percent Spillway Capacity Crossroads Park, volume data Volume, in acre-feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0 MAX 0 MIN 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 219 Crossroads Park Basin, stage data Depth, in feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 2 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 4 0.0 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 5 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 6 1.3 --1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 7 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 8 1.3 --1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 9 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 10 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 11 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 12 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 13 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 14 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 15 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 16 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 17 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 18 0.0 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 19 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 20 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 21 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 22 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 23 --1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 24 --1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 25 --1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 26 --1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 27 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 28 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 29 1.3 1.3 1.3 1.3 --1.3 1.3 1.3 1.3 1.3 1.3 1.3 30 1.3 1.3 1.3 1.3 --1.3 1.3 1.3 1.3 1.3 1.3 1.3 31 1.3 --1.3 1.3 --1.3 --1.3 --1.3 1.3 -------------------------------------------------------------------------------MEAN 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 MAX 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.4 1.3 MIN 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 -----------------------------------------------------------------------------WTR YR 2021 MEAN 1.33 MAX 1.35 MIN 1.33 FCDMC Annual Surface Water Report, Water Year 2021 Page 220 Cruff Wash, ID #23707 Site Data LOCATION Located about 7 miles west of Old US80 south of Agua Caliente Road DRAINAGE AREA 13.2 mi2 STREAM TYPE Natural Stream JURISDICTION Maricopa County, Arizona WATERSHED Lower Centennial SECTION/TOWNSHIP/RANGE S20 T2S R6W LATITUDE N 33° 15' 04.0" | +33.25111 LONGITUDE W 112° 52' 54.5" | -112.88180 STREAMGAGE INSTALLATION DATE 05/14/2002 - WY 2002 AVAILABLE PERIOD OF RECORD (POR) 05/14/2002 - Current LENGTH OF AVAILABLE POR DATA 19.38 Years | 7,080 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.33 feet Gage Height STAFF GAGES 0 CREST STAGE GAGES 1 ZERO GAGE HEIGHT ELEVATION 937.36 feet NAVD88 POINT OF ZERO FLOW 0.0 feet Gage Height EXTREME FOR PERIOD OF RECORD 1,627 cfs | 4.73 feet | 03/12/2020 FCDMC Annual Surface Water Report, Water Year 2021 Page 221 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 222 WY2021 Events Date of Peak 08/14/2021 08/17/2021 Peak Gage Height (feet) 4.28 3.11 Peak Discharge (cfs) 1,181 385 Hydrograph of peak WY 2021 flow event, 08/14/2021 Flood Flow Frequency Flood Flow Frequency N=20, HEC-WRC computation (based on 20 years of data) 2-year 5-year 10-year 20-year 50-year 100-year 517 1,040 1,380 1,670 1,990 2,190 NOTE: These results are based on very limited data. FCDMC Annual Surface Water Report, Water Year 2021 Page 223 Cruff Wash, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 52 15 16 17 12 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 64 0 MEAN 0 0 0 0 0 0 0 0 0 0 2 0 MAX 0 0 0 0 0 0 0 0 0 0 1181 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 0 127 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 64 MEAN 0 MAX 1181 MIN 0 AC_FT 127 FCDMC Annual Surface Water Report, Water Year 2021 Page 224 Daggs Wash, ID #48507 Site Data LOCATION Near 307th Avenue and Peak View Road DRAINAGE AREA 13.3 mi2 STREAM TYPE Natural Stream JURISDICTION Maricopa County, Arizona WATERSHED Lower Hassayampa SECTION/TOWNSHIP/RANGE S25 T5N R5W LATITUDE N 33° 44' 45.2" | +33.74590 LONGITUDE W 112° 43' 30.2" | -112.72506 STREAMGAGE INSTALLATION DATE 11/08/2007 - WY 2008 AVAILABLE PERIOD OF RECORD (POR) 11/08/2007 - Current LENGTH OF AVAILABLE POR DATA 13.90 Years | 5,076 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.15 feet Gage Height STAFF GAGES 0 CREST STAGE GAGES 0 ZERO GAGE HEIGHT ELEVATION 1,668.55 feet NAVD88 POINT OF ZERO FLOW 0.0 feet Gage Height EXTREME FOR PERIOD OF RECORD 617 cfs | 2.10 feet Gage Height | 08/19/2014 FCDMC Annual Surface Water Report, Water Year 2021 Page 225 Watershed Maps FCDMC Annual Surface Water Report, Water Year 2021 Page 226 WY2021 Events Date of Peak Peak Gage Height Peak Discharge (cfs) 07/31/2021 0.46 66 Hydrograph of peak WY 2021 flow event, 07/31/2021 Flood Flow Frequency There is not enough data to compute a flood flow frequency for this gage station. FCDMC Annual Surface Water Report, Water Year 2021 Page 227 Daggs Wash, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 --------2 -------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 2 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 66 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 4 0 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 2 MEAN 0 MAX 66 MIN 0 AC_FT 4 FCDMC Annual Surface Water Report, Water Year 2021 Page 228 Deadman Wash at SR303L – ID #62107 Site Data LOCATION Located about 1.5 miles east of New River crossing DRAINAGE AREA 20.1 mi2 STREAM TYPE Natural Stream JURISDICTION Phoenix, Arizona WATERSHED Upper New River SECTION/TOWNSHIP/RANGE S18 T5N R2E LATITUDE N 33° 46' 52.6" | +33.78128 LONGITUDE W 112° 11' 37.7" | -112.19381 STREAMGAGE INSTALLATION DATE 10/17/2019 – WY2020 AVAILABLE PERIOD OF RECORD (POR) 10/17/2019 - Current LENGTH OF AVAILABLE POR DATA 1.96 Years | 715 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.80 feet Gage Height STAFF GAGES 0 ZERO GAGE HEIGHT ELEVATION 1,533.00 feet NAVD88 POINT OF ZERO FLOW 0.0 feet Gage Height EXTREME FOR PERIOD OF RECORD 749 cfs | 1.75 feet | 08/12/2021 FCDMC Annual Surface Water Report, Water Year 2021 Page 229 Location Map W Carefree Hwy FCDMC Annual Surface Water Report, Water Year 2021 Page 230 WY2021 Events Date of Peak 08/12/2021 08/13/2021 Peak Gage Height (feet) 1.75 1.44 Hydrograph of peak WY 2021 flow event, 08/12/2021 Flood Flow Frequency There are not enough data to compute a flood frequency for this site. FCDMC Annual Surface Water Report, Water Year 2021 Page 231 Peak Discharge (cfs) 749 435 Deadman Wash at SR303L, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 --9 10 11 12 50 13 12 14 32 15 16 17 18 19 20 21 22 23 24 25 26 --27 --28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 95 0 MEAN 0 0 0 0 0 0 0 0 0 0 3 0 MAX 0 0 0 0 0 0 0 0 0 0 749 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 0 188 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 95 MEAN 0 MAX 749 MIN 0 AC_FT 188 FCDMC Annual Surface Water Report, Water Year 2021 Page 232 Delaney Wash – ID #25007 Site Data LOCATION Near Salome Road and 427th Avenue DRAINAGE AREA 49 mi2 STREAM TYPE Natural Stream JURISDICTION Maricopa County, Arizona WATERSHED Lower Centennial SECTION/TOWNSHIP/RANGE S34 T2N R7W LATITUDE N 33° 28' 08.3" | +33.46897 LONGITUDE W 112° 58' 10.4" | -112.96955 STREAMGAGE INSTALLATION DATE 12/22/1999 - WY 2000 AVAILABLE PERIOD OF RECORD (POR) 12/22/1999 - Current LENGTH OF AVAILABLE POR DATA 21.78 Years | 7,954 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.11 feet Gage Height STAFF GAGES 0 ZERO GAGE HEIGHT ELEVATION 1,112.03 feet NAVD88 POINT OF ZERO FLOW 0.2 feet Gage Height EXTREME FOR PERIOD OF RECORD 2,800 cfs | 8.06 feet | 09/09/2013 FCDMC Annual Surface Water Report, Water Year 2021 Page 233 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 234 WY2021 Events Date of Peak Peak Gage Height (feet) Peak Discharge (cfs) 07/30/2021 1.29 64 Hydrograph of peak WY 2021 flow event, 07/30/2021 Flood Flow Frequency Flood Flow Frequency N=22, HEC-WRC computation (based on 22 years of data) 2-year 5-year 10-year 20-year 50-year 100-year 510 1,050 1,510 2,000 2,720 3,310 NOTE: These results are based on very limited data. FCDMC Annual Surface Water Report, Water Year 2021 Page 235 Delaney Wash, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --3 31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 3 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 64 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 5 0 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 3 MEAN 0 MAX 64 MIN 0 AC_FT 5 FCDMC Annual Surface Water Report, Water Year 2021 Page 236 Desert Hills Wash, ID #19307 Site Data LOCATION Located west of 16th Street, on Joy Ranch Road DRAINAGE AREA 1.0 mi2 STREAM TYPE Culvert on natural stream JURISDICTION Maricopa County, Arizona WATERSHED Cave Creek SECTION/TOWNSHIP/RANGE S28 T6N R3E LATITUDE N 33° 49' 41.6" | +33.82882 LONGITUDE W 112° 02' 54.0" | -112.04832 STREAMGAGE INSTALLATION DATE 03/02/2006 - WY 2006 AVAILABLE PERIOD OF RECORD (POR) 03/02/2006 - Current LENGTH OF AVAILABLE POR DATA 15.58 Years | 5,692 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.50 feet Gage Height STAFF GAGES 0 CREST STAGE GAGES 1 ZERO GAGE HEIGHT ELEVATION 1,856.02 feet NAVD88 POINT OF ZERO FLOW 0.55 feet Gage Height EXTREME FOR PERIOD OF RECORD 383 cfs | 6.21 feet | 07/23/2021 FCDMC Annual Surface Water Report, Water Year 2021 Page 237 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 238 WY2021 Events Date of Peak 07/23/2021 07/25/2021 07/31/2021 08/12/2021 08/18/20210 Peak Gage Height (feet) 6.21 2.31 2.65 5.77 2.06 Peak Discharge (cfs) 383 103 129 360 86 Hydrograph of peak WY 2021 flow event, 07/23/2021 Flood Flow Frequency Flood Flow Frequency N=16, HEC-WRC computation (based on 16 years of data) 2-year 5-year 10-year 20-year 50-year 100-year 161 276 345 403 469 511 FCDMC Annual Surface Water Report, Water Year 2021 Page 239 Desert Hills Wash, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 --6 --7 8 9 10 11 12 12 13 14 15 16 17 18 3 19 20 21 22 23 --26 24 25 4 26 27 28 29 --30 --31 --------4 -------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 34 15 0 MEAN 0 0 0 0 0 0 0 0 0 1 0 0 MAX 0 0 0 0 0 0 0 0 0 383 360 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 67 30 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 49 MEAN 0 MAX 383 MIN 0 AC_FT 97 FCDMC Annual Surface Water Report, Water Year 2021 Page 240 Dreamy Draw Dam, ID #9807 Site Data LOCATION Located near Northern Avenue and SR 51 DRAINAGE AREA 1.35 mi2 JURISDICTION Phoenix, Arizona WATERSHED Upper ACDC SECTION/TOWNSHIP/RANGE S34 T3N R3E LATITUDE N 33° 33' 43.8" | +33.56217 LONGITUDE W 112° 01' 53.7" | -112.03159 STREAMGAGE INSTALLATION DATE 01/24/1984 - WY 1984 AVAILABLE PERIOD OF RECORD (POR) 08/29/1988 - Current LENGTH OF AVAILABLE POR DATA 33.09 Years | 12,086 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.12 feet Gage Height STAFF GAGES 9 ZERO GAGE HEIGHT ELEVATION 1,371.46 feet NAVD88 POINT OF ZERO FLOW 0.00 feet Gage Height SPILLWAY ELEVATION 35.50 feet Gage Height TOP OF DAM ELEVATION 47.04 feet Gage Height FCDMC Annual Surface Water Report, Water Year 2021 Page 241 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 242 WY2021 Events Date of Peak 07/30/2021 08/11/2021 08/13/2021 08/16/2021 08/16/2021 Peak Gage Height (feet) 4.57 8.38 4.57 4.47 11.02 Peak Volume (ac-ft) 0.5 2.7 0.5 0.5 7.0 Hydrograph of peak 2021 impoundment event, 08/16/2021 FCDMC Annual Surface Water Report, Water Year 2021 Page 243 Percent Spillway Capacity 0.2 0.8 0.2 0.2 2.1 Dreamy Draw Dam, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 7 12 2 13 8 14 8 15 4 16 14 17 8 18 9 19 6 20 6 21 6 22 4 23 3 24 3 25 3 26 3 27 2 28 29 --30 --1 31 --------2 -------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 4 95 0 MEAN 0 0 0 0 0 0 0 0 0 0 3 0 MAX 0 0 0 0 0 0 0 0 0 72 131 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 8 188 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 99 MEAN 0 MAX 131 MIN 0 AC_FT 196 FCDMC Annual Surface Water Report, Water Year 2021 Page 244 Dreamy Draw Dam, volume data Volume, in acre-feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 1 7 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0 MAX 7 MIN 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 245 Dreamy Draw Dam, stage data Depth, in feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 2 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 3 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 4 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 5 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 6 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 7 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 8 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 9 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 10 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 11 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.7 0.1 12 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.2 0.1 13 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.8 0.1 14 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 1.1 0.1 15 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.6 0.1 16 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 1.3 0.1 17 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 1.1 0.1 18 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 1.1 0.1 19 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.9 0.1 20 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.9 0.1 21 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.9 0.1 22 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.7 0.1 23 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.5 0.1 24 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.4 0.1 25 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.3 0.1 26 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.3 0.1 27 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.2 0.1 28 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 29 0.1 0.1 0.1 0.1 --0.1 0.1 0.1 0.1 0.1 0.1 0.1 30 0.1 0.1 0.1 0.1 --0.1 0.1 0.1 0.1 0.2 0.1 0.1 31 0.1 --0.1 0.1 --0.1 --0.1 --0.3 0.1 -------------------------------------------------------------------------------MEAN 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.4 0.1 MAX 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 4.6 11.0 0.1 MIN 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0.15 MAX 11.02 MIN 0.12 FCDMC Annual Surface Water Report, Water Year 2021 Page 246 Dysart Drain at LAFB, ID #85807 Site Data LOCATION On Dysart Drain about 1/3 mile east of Litchfield Road DRAINAGE AREA 24.3 mi2 STREAM TYPE Engineered Channel JURISDICTION Glendale, Arizona WATERSHED White Tanks A SECTION/TOWNSHIP/RANGE S03 T2N R1W LATITUDE N 33° 32' 38.3" | +33.54397 LONGITUDE W 112° 20' 57.8" | -112.34940 STREAMGAGE INSTALLATION DATE 08/22/1996 - WY 1996 AVAILABLE PERIOD OF RECORD (POR) 08/22/1996 - Current LENGTH OF AVAILABLE POR DATA 25.11 Years | 9,171 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.10 feet Gage Height STAFF GAGES 0 CREST STAGE GAGES 0 ZERO GAGE HEIGHT ELEVATION 1,063.48 feet NAVD88 POINT OF ZERO FLOW 0.0 feet Gage Height EXTREME FOR PERIOD OF RECORD 862 cfs | 4.30 feet | 09/08/2014 FCDMC Annual Surface Water Report, Water Year 2021 Page 247 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 248 WY2021 Events Date of Peak 07/14/2021 07/25/2021 Peak Gage Height (feet) 0.46 1.81 NOTE: There is often a base flow at this location. Peak Discharge (cfs) 12 153 Hydrograph of peak WY 2021 flow event, 07/25/2021 Flood Flow Frequency Flood Flow Frequency N=26, HEC-WRC computation (based on 26 years of data) 2-year 5-year 10-year 20-year 50-year 100-year 78 176 273 395 600 796 NOTE: These results are based on very limited data. FCDMC Annual Surface Water Report, Water Year 2021 Page 249 Dysart Drain at LAFB, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 1 11 12 13 14 15 --16 --17 18 --19 20 21 22 23 24 25 20 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 1 0 0 0 0 0 0 20 0 0 MEAN 0 0 0 0 0 0 0 0 0 1 0 0 MAX 0 0 12 0 0 0 0 0 0 153 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 3 0 0 0 0 0 0 39 0 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 21 MEAN 0 MAX 153 MIN 0 AC_FT 42 FCDMC Annual Surface Water Report, Water Year 2021 Page 250 Dysart Drain at El Mirage Road, ID #85707 Site Data LOCATION On El Mirage Road about mid-way between Glendale and Northern Avenues DRAINAGE AREA 34.7 mi2 STREAM TYPE Engineered Channel JURISDICTION Glendale, Arizona WATERSHED White Tanks A SECTION/TOWNSHIP/RANGE S016 T2N R1W LATITUDE N 33° 32' 37.1" | +33.54370 LONGITUDE W 112° 19' 26.6" | -112.32399 STREAMGAGE INSTALLATION DATE 03/07/1997 - WY 1997 AVAILABLE PERIOD OF RECORD (POR) 03/07/1997 - Current LENGTH OF AVAILABLE POR DATA 24.57 Years | 8,974 Days DATA GAPS IN POR None STAGE GAGE TYPE Pressure Transducer STAGE GAGE ELEVATION 0.20 feet Gage Height STAFF GAGES 0 ZERO GAGE HEIGHT ELEVATION 1,054.29 feet NAVD88 POINT OF ZERO FLOW 0.0 feet Gage Height EXTREME FOR PERIOD OF RECORD 823 cfs | 5.30 feet | 09/08/2014 FCDMC Annual Surface Water Report, Water Year 2021 Page 251 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 252 WY2021 Events Date of Peak 07/14/2021 07/15/2021 07/25/2021 07/25/2021 08/14/2021 08/17/2021 Peak Gage Height (feet) 1.75 0.89 0.62 2.72 0.41 0.57 NOTE: There is a more or less continual base flow at this location. Peak Discharge (cfs) 238 72 38 521 19 33 Hydrograph of peak WY 2021 flow event, 07/25/2021 Flood Flow Frequency Flood Flow Frequency N=28, HEC-WRC computation (based on 28 years of data) 2-year 5-year 10-year 20-year 50-year 100-year 68 298 594 1,010 1,740 2,450 NOTE: These results are based on very limited data. FCDMC Annual Surface Water Report, Water Year 2021 Page 253 Dysart Drain at El Mirage Road, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 --6 7 8 9 10 10 11 12 13 14 28 15 13 16 1 17 1 18 19 20 21 22 23 24 25 3 111 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 10 3 0 0 0 0 0 153 1 0 MEAN 0 0 0 0 0 0 0 0 0 5 0 0 MAX 0 0 76 28 0 0 0 0 0 521 33 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 20 6 0 0 0 0 0 304 3 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 168 MEAN 0 MAX 521 MIN 0 AC_FT 333 FCDMC Annual Surface Water Report, Water Year 2021 Page 254 East Fork Cave Creek Basin #1, ID #7807 Site Data LOCATION On Beardsley Road east of Cave Creek Road DRAINAGE AREA 1.18 mi2 STREAM TYPE Flood control basin on natural stream JURISDICTION Phoenix, Arizona WATERSHED Upper ACDC SECTION/TOWNSHIP/RANGE S26 T4N R3E LATITUDE N 33° 40' 11.3" | +33.66981 LONGITUDE W 112° 01' 31.3" | -112.02536 STREAMGAGE INSTALLATION DATE 03/02/1994 - WY 1994 AVAILABLE PERIOD OF RECORD (POR) 03/02/1994 - Current LENGTH OF AVAILABLE POR DATA DATA 27.58 Years | 10,075 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.23 feet Gage Height ZERO GAGE HEIGHT ELEVATION 1,489.95 feet NAVD88 POINT OF ZERO FLOW 0.00 feet Gage Height SPILLWAY CREST ELEVATION No spillway TOP OF BASIN ELEVATION 7.16 feet Gage Height FCDMC Annual Surface Water Report, Water Year 2021 Page 255 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 256 WY2021 Events Date of Peak 07/14/2021 07/16/2021 07/22/2021 07/23/2021 07/30/2021 08/13/2021 08/17/2021 08/18/2021 08/31/2021 Peak Gage Height (feet) 0.50 0.50 0.47 0.62 0.50 1.35 0.35 1.15 0.35 Peak Volume (ac-ft) 0.3 0.3 0.2 0.4 0.3 1.6 0.1 1.8 0.1 Hydrograph of peak 2021 impoundment event, 08/13/2021 FCDMC Annual Surface Water Report, Water Year 2021 Page 257 Percent Spillway Capacity 0.5 0.5 0.4 0.7 0.5 2.8 0.2 1.8 0.2 East Fork Cave Creek Basin #1, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 --6 7 8 9 10 1 11 12 13 1 14 1 15 16 1 17 1 18 1 19 20 21 22 1 23 1 24 25 26 1 27 28 29 --30 --1 31 --------1 -------------------------------------------------------------------------------TOTAL 6 3 2 1 10 15 14 15 14 15 17 15 MEAN 0 0 0 0 0 0 0 0 0 0 1 0 MAX 0 0 0 0 0 0 0 0 0 5 17 2 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 13 6 5 3 20 30 29 30 29 30 33 29 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 128 MEAN 0 MAX 17 MIN 0 AC_FT 253 FCDMC Annual Surface Water Report, Water Year 2021 Page 258 East Fork Cave Creek Basin #1, volume data Volume, in acre feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 --6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 2 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0 MAX 2 MIN 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 259 East Fork Cave Creek Basin #1, stage data Depth, in feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 3 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 4 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 5 0.2 0.2 0.2 0.2 --0.2 0.2 0.2 0.2 0.2 0.2 0.2 6 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 7 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 8 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 9 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 10 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 11 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 12 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 13 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.3 0.2 14 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 15 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 16 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 17 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 18 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.3 0.2 19 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 20 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 21 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 22 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 23 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 24 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 25 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 26 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 27 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 28 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 29 0.2 0.2 0.2 0.2 --0.2 0.2 0.2 0.2 0.2 0.2 0.2 30 0.2 0.2 0.2 0.2 --0.2 0.2 0.2 0.2 0.2 0.2 0.2 31 0.2 --0.2 0.2 --0.2 --0.2 --0.2 0.2 -------------------------------------------------------------------------------MEAN 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 MAX 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.6 1.4 0.3 MIN 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0.23 MAX 1.35 MIN 0.23 FCDMC Annual Surface Water Report, Water Year 2021 Page 260 East Fork Cave Creek Basin #3A, ID #8807 Site Data LOCATION Located near Cave Creek Road and Grovers Avenue DRAINAGE AREA Undetermined STREAM TYPE Flood control basin JURISDICTION Phoenix, Arizona WATERSHED Upper ACDC SECTION/TOWNSHIP/RANGE S34 T4N R3E LATITUDE N 33° 38' 46.0" | +33.65630 LONGITUDE W 112° 02' 21.0" | -112.03840 STREAMGAGE INSTALLATION DATE 10/14/2015 - WY 2016 AVAILABLE PERIOD OF RECORD (POR) 10/14/2015 - Current LENGTH OF AVAILABLE POR DATA 5.97 Years | 2,179 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.00 feet Gage Height STAFF GAGES 0 ZERO GAGE HEIGHT ELEVATION 1,425.27 feet NAVD88 POINT OF ZERO FLOW 0.00 feet Gage Height SPILLWAY CREST ELEVATION No spillway TOP OF BASIN ELEVATION 14.3 feet Gage Height FCDMC Annual Surface Water Report, Water Year 2021 Page 261 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 262 WY2021 Events Date of Peak Peak Gage Height (feet) None Hydrograph of peak 2021 impoundment event, No impoundments recorded during Water Year 2021. FCDMC Annual Surface Water Report, Water Year 2021 Page 263 Peak Volume (ac-ft) Percent Spillway Capacity EFCC Basin #3A, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 0 MEAN 0 MAX 0 MIN 0 AC_FT 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 264 EFCC Basin #3A, volume data Volume, in acre-feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0 MAX 0 MIN 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 265 EFCC Basin #3A, stage data Depth, in feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 2 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 3 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 4 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 5 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 6 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 7 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 9 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 10 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 11 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 12 0.8 0.8 0.8 0.8 0.0 0.8 0.8 0.8 0.8 0.8 0.8 0.8 13 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 14 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 15 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 16 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 17 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 18 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 19 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 20 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 21 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 22 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 23 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 24 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 25 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 26 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 27 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 28 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 29 0.8 0.8 0.8 0.8 --0.8 0.8 0.8 0.8 0.8 0.8 0.8 30 0.8 0.8 0.8 0.8 --0.8 0.8 0.8 0.8 0.8 0.8 0.8 31 0.8 --0.8 0.8 --0.8 --0.8 --0.8 0.8 -------------------------------------------------------------------------------MEAN 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 MAX 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 MIN 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0.80 MAX 0.80 MIN 0.80 FCDMC Annual Surface Water Report, Water Year 2021 Page 266 East Fork Cave Creek Basin #3B, ID #8707 Site Data LOCATION Near 20th Street and Grovers Avenue DRAINAGE AREA 3.52 mi2 STREAM TYPE9/ Flood control basin on natural stream JURISDICTION Phoenix, Arizona WATERSHED Upper ACDC SECTION/TOWNSHIP/RANGE S34 T4N R3E LATITUDE N 33° 38' 45.9" | +33.64609 LONGITUDE W 112° 02' 21.1" | -112.03918 STREAMGAGE INSTALLATION DATE 09/13/1994 - WY 1994 AVAILABLE PERIOD OF RECORD (POR) 09/13/1994 - Current LENGTH OF AVAILABLE POR DATA DATA 27.05 Years | 9,880 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.15 feet Gage Height ZERO GAGE HEIGHT ELEVATION 1,419.45 feet NAVD88 POINT OF ZERO FLOW 0.00 feet Gage Height SPILLWAY CREST ELEVATION 14.6 feet Gage Height TOP OF BASIN ELEVATION 15.0 feet Gage Height FCDMC Annual Surface Water Report, Water Year 2021 Page 267 Location Map FCDMC Annual Surface Water Report, Water Year 2021 Page 268 WY2021 Events Date of Peak 08/13/2021 08/18/2021 Peak Gage Height (feet) 2.96 0.69 Peak Volume (ac-ft) 4.6 0.1 Hydrograph of peak 2021 impoundment event, 08/13/2021 FCDMC Annual Surface Water Report, Water Year 2021 Page 269 Percent Spillway Capacity 3.8 0.0 East Fork Cave Creek Basin #3B, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 10 14 4 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 14 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 249 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 0 28 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 14 MEAN 0 MAX 249 MIN 0 AC_FT 28 FCDMC Annual Surface Water Report, Water Year 2021 Page 270 East Fork Cave Creek Basin #3B, volume data Volume, in acre-feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 5 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0 MAX 5 MIN 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 271 East Fork Cave Creek Basin #3B, stage data Depth, in feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 2 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 3 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 4 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 5 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 6 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 7 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 8 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 9 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 10 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 11 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 12 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 13 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.3 0.1 14 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.2 0.1 15 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 16 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 17 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 18 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.2 0.1 19 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 20 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 21 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 22 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 23 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 24 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 25 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 26 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 27 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 28 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 29 0.1 0.1 0.1 0.1 --0.1 0.1 0.1 0.1 0.1 0.1 0.1 30 0.1 0.1 0.1 0.1 --0.1 0.1 0.1 0.1 0.1 0.1 0.1 31 0.1 --0.1 0.1 --0.1 --0.1 --0.1 0.1 -------------------------------------------------------------------------------MEAN 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.2 0.1 MAX 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 3.0 0.1 MIN 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0.15 MAX 2.96 MIN 0.15 FCDMC Annual Surface Water Report, Water Year 2021 Page 272 East Fork Cave Creek Basin #4 – ID #8207 Site Data LOCATION Near Paradise Valley Community College DRAINAGE AREA 0.68 mi2 JURISDICTION Phoenix, Arizona WATERSHED Upper ACDC SECTION/TOWNSHIP/RANGE S36 T4N R3E LATITUDE N 33° 38' 56.5" | +33.64904 LONGITUDE W 112° 00' 37.5" | -112.01041 STREAMGAGE INSTALLATION DATE 01/18/1994 - WY 1994 AVAILABLE PERIOD OF RECORD (POR) 01/18/1994 - Current LENGTH OF AVAILABLE POR DATA DATA 27.70 Years | 10,118 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.30 feet Gage Height ZERO GAGE HEIGHT ELEVATION 1,464.57 feet NAVD88 POINT OF ZERO FLOW 0.00 feet Gage Height SPILLWAY CREST ELEVATION 8.0 feet Gage Height TOP OF BASIN ELEVATION 8.5 feet Gage Height FCDMC Annual Surface Water Report, Water Year 2021 Page 273 Location Map (watershed not available) FCDMC Annual Surface Water Report, Water Year 2021 Page 274 WY2021 Events Date of Peak 12/10/2020 01/23/2021 01/24/2021 01/24/2021 01/25/2021 07/01/2021 07/03/2021 07/14/2021 07/16/2021 07/23/2021 07/25/2021 07/31/2021 08/13/2021 08/14/2021 08/18/2021 Peak Gage Height (feet) 1.37 0.59 0.92 1.37 1.25 1.25 0.44 1.37 0.77 1.70 1.84 0.41 2.44 0.52 1.11 Peak Volume (ac-ft) 0.6 0.2 0.3 0.6 0.5 0.5 0.1 0.6 0.2 0.7 0.8 0.1 2.2 0.1 0.4 Hydrograph of peak 2021 impoundment event, 08/13/2021 FCDMC Annual Surface Water Report, Water Year 2021 Page 275 Percent Spillway Capacity 0.8 0.2 0.5 0.8 0.8 0.8 0.1 0.8 0.4 1.2 1.4 0.1 3.0 0.2 0.6 East Fork Cave Creek Basin #4, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 2 14 2 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 1 4 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 2 2 0 0 0 0 0 16 38 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 1 8 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 5 MEAN 0 MAX 38 MIN 0 AC_FT 10 FCDMC Annual Surface Water Report, Water Year 2021 Page 276 East Fork Cave Creek Basin #4, volume data Volume, in acre feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 1 1 0 0 0 0 0 1 2 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0 MAX 2 MIN 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 277 East Fork Cave Creek Basin #4, stage data Depth, in feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 2 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 4 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 5 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 6 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 7 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 8 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 9 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 10 0.3 0.3 0.4 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 11 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 12 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 13 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.4 0.3 14 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.5 0.3 15 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 16 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 17 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 18 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.4 0.3 19 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 20 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 21 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 22 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 23 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.4 0.3 0.3 24 0.3 0.3 0.3 0.4 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 25 0.3 0.3 0.3 0.4 0.3 0.3 0.3 0.3 0.3 0.4 0.3 0.3 26 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 27 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 28 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 29 0.3 0.3 0.3 0.3 --0.3 0.3 0.3 0.3 0.3 0.3 0.3 30 0.3 0.3 0.3 0.3 --0.3 0.3 0.3 0.3 0.3 0.3 0.3 31 0.3 --0.3 0.3 --0.3 --0.3 --0.3 0.3 -------------------------------------------------------------------------------MEAN 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 MAX 0.3 0.3 1.4 1.4 0.3 0.3 0.3 0.3 0.3 1.8 2.4 0.8 MIN 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0.30 MAX 2.44 MIN 0.30 FCDMC Annual Surface Water Report, Water Year 2021 Page 278 East Fork Cave Creek near 7th Avenue, ID #8507 Site Data LOCATION In Moon Valley Park, near Coral Gable Drive and 7th Avenue DRAINAGE AREA 14.1 mi2 STREAM TYPE Channelized Natural Stream JURISDICTION Phoenix, Arizona WATERSHED Upper ACDC SECTION/TOWNSHIP/RANGE S05 T3N R3E LATITUDE N 33° 37' 40.6" | +33.62793 LONGITUDE W 112° 04' 50.7" | -112.08076 STREAMGAGE INSTALLATION DATE 05/08/1997 - WY 1997 AVAILABLE PERIOD OF RECORD (POR) 05/08/1997 - Current LENGTH OF AVAILABLE POR DATA DATA 24.40 Years | 8,912 Days DATA GAPS IN POR None STAGE GAGE ELEVATION -0.25 feet Gage Height ZERO GAGE HEIGHT ELEVATION 1,341.59 feet NAVD88 POINT OF ZERO FLOW 0.0 feet Gage Height EXTREME FOR PERIOD OF RECORD 4,067 cfs | 7.55 feet | 08/02/2005 FCDMC Annual Surface Water Report, Water Year 2021 Page 279 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 280 WY2021 Events Date of Peak 12/10/2020 01/25/2021 01/29/2021 07/02/2021 07/04/2021 07/14/2021 07/17/2021 07/22/2021 07/23/2021 07/25/2021 08/13/2021 08/17/2021 08/18/2021 09/26/2021 Peak Gage Height (feet) 0.92 1.46 0.33 0.63 0.24 1.27 0.44 0.97 1.37 1.17 7.08 0.68 3.66 0.34 Peak Discharge (cfs) 71 200 20 39 15 151 27 81 177 126 3,610 42 1,500 21 Hydrograph of peak WY 2021 flow event, 08/13/2021 Flood Flow Frequency Flood Flow Frequency N=25, HEC-WRC computation (based on 25 years of data) 2-year 5-year 10-year 20-year 50-year 100-year 581 1,420 2,240 3,280 5,000 6,620 8,200 9,400 FEMA FIS 5,500 FCDMC Annual Surface Water Report, Water Year 2021 Page 281 East Fork Cave Creek near 7th Avenue, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 15 3 1 4 11 5 6 7 8 9 10 12 11 12 --13 --148 14 --21 135 15 --2 1 16 17 12 13 18 119 19 13 20 21 22 3 23 52 24 16 14 25 35 25 26 15 1 5 27 8 28 29 3 --30 8 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 12 77 0 0 0 0 0 159 429 13 MEAN 0 0 0 2 0 0 0 0 0 5 14 0 MAX 0 0 71 200 0 0 0 0 0 177 3610 21 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 24 153 0 0 0 0 0 315 850 26 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 690 MEAN 2 MAX 3610 MIN 0 AC_FT 1369 FCDMC Annual Surface Water Report, Water Year 2021 Page 282 El Mirage Road Drain, ID #14507 Site Data LOCATION Located near El Mirage Road south of Loop 303 DRAINAGE AREA 70.3 mi2 STREAM TYPE Natural Stream JURISDICTION Surprise, Arizona WATERSHED Trilby SECTION/TOWNSHIP/RANGE S14 T4N R1W LATITUDE N 33° 41' 26.6" | +33.69072 LONGITUDE W 112° 19' 40.9" | -112.32804 STREAMGAGE INSTALLATION DATE 02/16/2006 - WY 2006 AVAILABLE PERIOD OF RECORD (POR) 02/16/2006 - Current LENGTH OF AVAILABLE POR DATA 15.62 Years | 5,706 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 1.20 feet Gage Height STAFF GAGES 0 CREST STAGE GAGES 1 ZERO GAGE HEIGHT ELEVATION 1,262.96 feet NAVD88 POINT OF ZERO FLOW 0.3 feet Gage Height EXTREME FOR PERIOD OF RECORD 475 cfs | 3.36 feet GH | 01/21/2010 FCDMC Annual Surface Water Report, Water Year 2021 Page 283 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 284 WY2021 Events Date of Peak 07/03/2021 07/25/2021 Peak Gage Height (feet) 1.67 1.62 Peak Discharge (cfs) 42 42 Hydrograph of peak WY 2021 flow event, 07/03/2021 Flood Flow Frequency Flood Flow Frequency N=16, HEC-WRC computation (based on 16 years of data) 2-year 5-year 10-year 20-year 50-year 100-year 71 284 507 762 1,120 1,400 50-year 100-year 4,747 6,023 NOTE(1): These results are based on very limited data. Flood Flow Frequency FEMA Flood Insurance Study 2-year 5-year 10-year 2,835 FCDMC Annual Surface Water Report, Water Year 2021 Page 285 20-year El Mirage Road Drain, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 8 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 12 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 42 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 23 0 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 12 MEAN 0 MAX 42 MIN 0 AC_FT 23 FCDMC Annual Surface Water Report, Water Year 2021 Page 286 East Maricopa Floodway at Broadway Road, ID #34307 Site Data LOCATION Located about 1,000 feet south of Broadway Road, east of Higley Road DRAINAGE AREA 11.3 mi2 STREAM TYPE Engineered Channel JURISDICTION Mesa, Arizona WATERSHED Upper East Maricopa Floodway SECTION/TOWNSHIP/RANGE S26 T1N R6E LATITUDE N 33° 24' 19.8" | +33.40551 LONGITUDE W 111° 42' 37.4" | -111.71040 STREAMGAGE INSTALLATION DATE 08/10/1989 - WY 1989 AVAILABLE PERIOD OF RECORD (POR) 09/03/1990 - Current LENGTH OF AVAILABLE POR DATA 31.08 Years | 11,351 Days DATA GAPS IN POR None STAGE GAGE ELEVATION -3.84 feet Gage Height STAFF GAGES 1 CREST STAGE GAGES 2 ZERO GAGE HEIGHT ELEVATION 1,335.63 feet NAVD88 POINT OF ZERO FLOW 0.0 feet Gage Height EXTREME FOR PERIOD OF RECORD 4,292 cfs | 5.08 feet GH | 09/07/2012 FCDMC Annual Surface Water Report, Water Year 2021 Page 287 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 288 WY2021 Events Date of Peak 01/25/2021 07/23/2021 07/24/2021 08/11/2021 08/12/2021 08/14/2021 08/16/2021 09/01/2021 Peak Gage Height (feet) 0.12 1.55 1.14 2.62 2.86 2.33 1.16 0.80 Peak Discharge (cfs) 28 222 113 675 818 531 117 54 Hydrograph of peak WY 2021 flow event, 08/12/2021 Flood Flow Frequency Flood Flow Frequency N=31, HEC-WRC computation (based on 31 years of data) 2-year 5-year 10-year 20-year 50-year 100-year 771 1,750 2,570 3,470 4,760 5,800 NOTE(1): These results are based on limited data. FCDMC Annual Surface Water Report, Water Year 2021 Page 289 EMF at Broadway Road, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 32 2 30 3 10 4 2 5 6 7 8 9 10 11 129 12 180 13 37 14 157 15 36 16 57 17 36 18 13 19 4 20 1 21 22 2 23 77 24 43 25 6 30 26 17 19 27 2 4 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 25 0 0 0 0 0 175 650 74 MEAN 0 0 0 1 0 0 0 0 0 6 21 2 MAX 0 0 0 28 0 0 0 0 0 222 818 54 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 50 0 0 0 0 0 348 1289 147 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 924 MEAN 3 MAX 818 MIN 0 AC_FT 1834 FCDMC Annual Surface Water Report, Water Year 2021 Page 290 East Maricopa Fldwy below Powerline Floodway, ID #33707 Site Data LOCATION Located about 1/3 mile downstream from Powerline Floodway DRAINAGE AREA 257 mi2 STREAM TYPE Concrete Lined Channel JURISDICTION Mesa, Arizona WATERSHED Lower EMF SECTION/TOWNSHIP/RANGE S30 T1S R7E LATITUDE N 33° 19' 01.7" | +33.31715 LONGITUDE W 111° 41' 03.3" | -111.68424 STREAMGAGE INSTALLATION DATE 04/15/2014 - WY 2014 AVAILABLE PERIOD OF RECORD (POR) 04/15/2014 - Current LENGTH OF AVAILABLE POR DATA 7.46 Years | 2,726 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.15 feet Gage Height STAFF GAGES None CREST STAGE GAGES None ZERO GAGE HEIGHT ELEVATION 1,316.23 feet NAVD88 POINT OF ZERO FLOW 0.0 feet Gage Height EXTREME FOR PERIOD OF RECORD 3,372 cfs | 6.27 feet | 08/10/2018 FCDMC Annual Surface Water Report, Water Year 2021 Page 291 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 292 WY2021 Events Date of Peak 07/24/2021 07/25/2021 08/12/2021 08/14/2021 08/17/2021 Peak Gage Height 1.22 1.60 1.37 1.52 1.17 Peak Discharge (cfs) 166 280 209 254 153 Hydrograph of peak WY 2021 flow event, 07/25/2021 Flood Flow Frequency There is not enough data to compute a flood flow frequency for this gage station. FCDMC Annual Surface Water Report, Water Year 2021 Page 293 EMF below Powerline Floodway, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 55 13 14 101 15 3 16 17 89 18 5 19 --20 21 22 23 2 24 46 25 127 26 21 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 197 254 0 MEAN 0 0 0 0 0 0 0 0 0 6 8 0 MAX 0 0 0 0 0 0 0 0 0 280 254 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 390 503 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 451 MEAN 1 MAX 280 MIN 0 AC_FT 894 FCDMC Annual Surface Water Report, Water Year 2021 Page 294 East Maricopa Floodway at Queen Creek Road, ID #34807 Site Data LOCATION West of the Higley and Queen Creek Roads intersection DRAINAGE AREA 273.4 mi2 STREAM TYPE Engineered Channel JURISDICTION Gilbert, Arizona WATERSHED Lower East Maricopa Floodway SECTION/TOWNSHIP/RANGE S15 T2S R6E LATITUDE N 33° 15' 47.1" | +33.26307 LONGITUDE W 111° 43' 32.6" | -111.72572 STREAMGAGE INSTALLATION DATE 01/18/1989 - WY 1989 AVAILABLE PERIOD OF RECORD (POR) 01/18/1989 - current LENGTH OF AVAILABLE POR DATA 32.70 Years | 11,944 Days DATA GAPS IN POR 10/22/2010 - 01/17/2012 STAGE GAGE TYPE Pressure Transducer STAGE GAGE ELEVATION -0.64 feet Gage Height STAFF GAGES 2 CREST STAGE GAGES 2 ZERO GAGE HEIGHT ELEVATION 1,302.14 feet NAVD88 POINT OF ZERO FLOW -1.2 feet Gage Height EXTREME FOR PERIOD OF RECORD 3,162 cfs | 4.96 feet | 09/08/2014 FCDMC Annual Surface Water Report, Water Year 2021 Page 295 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 296 WY2021 Events Date of Peak 07/11/2021 07/23/2021 07/25/2021 07/31/2021 08/10/2021 08/11/2021 08/12/2021 08/14/2021 08/17/2021 09/02/2021 Peak Gage Height (feet) 0.00 1.95 3.32 1.07 0.60 1.37 3.07 3.32 2.84 0.95 Peak Discharge (cfs) 40 657 1,592 259 128 378 1,392 1,592 1,221 219 Hydrograph of peak WY 2021 flow event, 07/25/2021 Flood Flow Frequency Flood Flow Frequency N=33, HEC-WRC computation (based on 33 years of data) 2-year 5-year 10-year 20-year 50-year 100-year 891 2,060 2,940 3,770 4,800 5,510 NOTE(1): These results are based on limited data. FCDMC Annual Surface Water Report, Water Year 2021 Page 297 EMF at Queen Creek Road, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 29 74 2 107 145 3 195 81 4 201 7 5 138 6 7 8 9 10 59 11 18 212 12 723 13 428 14 3 931 15 5 745 16 229 17 725 18 953 19 270 20 121 21 48 22 25 23 356 13 24 2 525 8 25 1100 26 840 27 378 28 148 29 --78 30 --46 31 --------113 -------------------------------------------------------------------------------TOTAL 0 0 0 0 0 2 0 0 0 3611 6160 280 MEAN 0 0 0 0 0 0 0 0 0 116 199 9 MAX 0 0 0 0 0 8 0 0 0 1592 1592 219 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 4 0 0 0 7162 12219 556 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 10053 MEAN 28 MAX 1592 MIN 0 AC_FT 19941 FCDMC Annual Surface Water Report, Water Year 2021 Page 298 East Maricopa Floodway at Arizona Avenue, ID #35507 Site Data LOCATION On Arizona Avenue (SR 587) about 2 miles south of Sun Lakes DRAINAGE AREA 668 mi2(including Queen Creek) STREAM TYPE Engineered Channel JURISDICTION Gila River Indian Community WATERSHED Lower East Maricopa Floodway SECTION/TOWNSHIP/RANGE S16 T3S R5E LATITUDE N 33° 10' 07.8" | +33.16882 LONGITUDE W 111° 50' 27.7" | -111.84102 STREAMGAGE INSTALLATION DATE 02/10/1989 - WY 1989 AVAILABLE PERIOD OF RECORD (POR) 02/10/1989 - Current LENGTH OF AVAILABLE POR DATA 32.64 Years | 11,921 Days DATA GAPS IN POR None STAGE GAGE ELEVATION -0.15 feet Gage Height STAFF GAGES 3 CREST STAGE GAGES 1 ZERO GAGE HEIGHT ELEVATION 1,210.50 feet NAVD88 POINT OF ZERO FLOW 0.0 feet Gage Height EXTREME FOR PERIOD OF RECORD 5,536 cfs | 4.07 feet | 01/11/1993 FCDMC Annual Surface Water Report, Water Year 2021 Page 299 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 300 WY2021 Events Date of Peak 07/24/2021 07/26/2021 08/11/2021 08/13/2021 08/14/2021 08/15/2021 08/17/2021 08/18/2021 Peak Gage Height (feet) 0.81 1.37 0.71 0.68 0.68 1.06 1.01 0.96 Peak Discharge (cfs) 235 428 206 198 198 314 297 281 Hydrograph of peak WY 2021 flow event, 07/26/2021 Flood Flow Frequency Flood Flow Frequency N=33, HEC-WRC computation (based on 33 years of data) 2-year 5-year 10-year 20-year 50-year 100-year 349 1,020 1,720 2,590 3,990 5,260 NOTE(1): These results are based on limited data. FCDMC Annual Surface Water Report, Water Year 2021 Page 301 EMF at Arizona Avenue, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 19 12 13 34 14 58 15 196 16 72 17 124 18 238 19 109 20 21 22 23 24 60 25 179 26 302 27 83 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 623 851 0 MEAN 0 0 0 0 0 0 0 0 0 20 27 0 MAX 0 0 0 0 0 0 0 0 0 428 314 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 1236 1689 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 1474 MEAN 4 MAX 428 MIN 0 AC_FT 2924 FCDMC Annual Surface Water Report, Water Year 2021 Page 302 Estrella Fan, ID #84207 Site Data LOCATION Located in northwest part of the Estrella Mountains DRAINAGE AREA 1.0 mi2 STREAM TYPE Natural Stream JURISDICTION Goodyear, Arizona WATERSHED Waterman SECTION/TOWNSHIP/RANGE S12 T2S R1W LATITUDE N 33° 16' 10.1" | +33.26949 LONGITUDE W 112° 19' 15.3" | -112.32091 STREAMGAGE INSTALLATION DATE 04/30/1993 - WY 1993 AVAILABLE PERIOD OF RECORD (POR) 04/30/1993 - Current LENGTH OF AVAILABLE POR DATA 28.42 Years | 10,381 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.00 feet Gage Height STAFF GAGES 0 CREST STAGE GAGES 6 - not related to transducer gage height ZERO GAGE HEIGHT ELEVATION 1,446.87 feet NAVD88 POINT OF ZERO FLOW 0.2 feet Gage Height EXTREME FOR PERIOD OF RECORD 508 cfs | 1.60 feet | 09/08/2014 FCDMC Annual Surface Water Report, Water Year 2021 Page 303 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 304 WY2021 Events Date of Peak Peak Gage Height (feet) Peak Discharge (cfs) None Hydrograph of peak WY 2021 flow event, No runoff events occurred in Water Year 2021. Flood Flow Frequency Flood Flow Frequency HEC-1 Analysis, 1997 2-year 5-year 10-year 25-year 50-year 100-year 310 860 1,280 1,800 2,250 2,710 FCDMC Annual Surface Water Report, Water Year 2021 Page 305 Estrella Fan, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 --2 ----3 --4 --5 6 --7 --8 --9 10 --11 --12 --13 --14 15 16 --17 ----18 ----19 --20 ----21 ----22 --23 --24 --25 --26 ----27 --28 --29 ----30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 0 MEAN 0 MAX 0 MIN 0 AC_FT 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 306 Flying E Wash, ID #51707 Site Data LOCATION About 1 mile west of Vulture Mine Road on US 60 DRAINAGE AREA 8.5 mi2 STREAM TYPE Natural Stream JURISDICTION Wickenburg, Arizona WATERSHED Lower Hassayampa SECTION/TOWNSHIP/RANGE S09 T7N R5W LATITUDE N 33° 57' 44.0" | +33.96223 LONGITUDE W 112° 46' 58.5" | -112.78291 STREAMGAGE INSTALLATION DATE 07/12/1994 - WY 1994 AVAILABLE PERIOD OF RECORD (POR) 07/12/1994 - Current LENGTH OF AVAILABLE POR DATA 27.22 Years | 9,943 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.00 feet Gage Height STAFF GAGES 1 CREST STAGE GAGES 2 ZERO GAGE HEIGHT ELEVATION 2,283.20 feet NAVD88 POINT OF ZERO FLOW 0.4 feet Gage Height EXTREME FOR PERIOD OF RECORD 5,267 cfs | 7.07 feet | 07/18/2015 FCDMC Annual Surface Water Report, Water Year 2021 Page 307 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 308 WY2021 Events Date of Peak 08/11/2021 08/11/2021 Peak Gage Height (feet) 1.02 4.44 Peak Discharge (cfs) 53 2,214 Hydrograph of peak WY 2021 flow event, 08/11/2021 Flood Flow Frequency Flood Flow Frequency N=28, HEC-WRC computation (based on 28 years of data) 2-year 5-year 10-year 20-year 50-year 100-year 280 1,230 2,410 3,990 6,720 9,240 NOTE: These results are based on limited data. FCDMC Annual Surface Water Report, Water Year 2021 Page 309 Flying E Wash, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 113 12 13 14 15 16 17 18 19 20 21 22 23 24 25 --26 --27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 113 0 MEAN 0 0 0 0 0 0 0 0 0 0 4 0 MAX 0 0 0 0 0 0 0 0 0 0 2214 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 0 225 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 113 MEAN 0 MAX 2214 MIN 0 AC_FT 225 FCDMC Annual Surface Water Report, Water Year 2021 Page 310 Ford Canyon Wash, ID #86207 Site Data LOCATION Located in the north part of White Tanks Regional Park DRAINAGE AREA 4.3 mi2 STREAM TYPE Natural Stream JURISDICTION Maricopa County, Arizona WATERSHED White Tanks B SECTION/TOWNSHIP/RANGE S18 T3N R2W LATITUDE N 33° 35' 47.3" | +33.59648 LONGITUDE W 112° 29' 57.3" | -112.49925 STREAMGAGE INSTALLATION DATE 02/05/2002 - WY 2002 AVAILABLE PERIOD OF RECORD (POR) 02/05/2002 - Current LENGTH OF AVAILABLE POR DATA 19.65 Years | 7,178 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.72 feet Gage Height STAFF GAGES 0 CREST STAGE GAGES 1 ZERO GAGE HEIGHT ELEVATION 1,468.00 feet NAVD88 POINT OF ZERO FLOW -0.3 feet Gage Height EXTREME FOR PERIOD OF RECORD 1,682 cfs | 4.37 feet | 09/08/2014 FCDMC Annual Surface Water Report, Water Year 2021 Page 311 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 312 WY2021 Events Date of Peak Peak Gage Height (feet) Peak Discharge (cfs) None Hydrograph of peak WY 2021 flow event, No runoff recorded during Water Year 2021. Flood Flow Frequency Flood Flow Frequency Based on USGS Streamstats 2-year 5-year 10-year 25-year 50-year 100-year 222 637 1,090 1,700 2,440 3,350 FCDMC Annual Surface Water Report, Water Year 2021 Page 313 Ford Canyon Wash, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 --26 --27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 0 MEAN 0 MAX 0 MIN 0 AC_FT 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 314 Fourth of July Wash, ID #41207 Site Data LOCATION Western Maricopa County about 20 miles west of Arlington DRAINAGE AREA 3.7 mi2 STREAM TYPE Natural Stream JURISDICTION Maricopa County, Arizona WATERSHED Lower Gila SECTION/TOWNSHIP/RANGE S01 T2S R9W LATITUDE N 33° 16' 39.5" | +33.27763 LONGITUDE W 113° 07' 47.1" | -113.12976 STREAMGAGE INSTALLATION DATE 03/14/2002 - WY 2002 AVAILABLE PERIOD OF RECORD (POR) 03/14/2002 - Current LENGTH OF AVAILABLE POR DATA 19.55 Years | 7,141 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.20 feet Gage Height STAFF GAGES 0 CREST STAGE GAGES 1 ZERO GAGE HEIGHT ELEVATION 1,110.00 feet NAVD88 POINT OF ZERO FLOW -0.25 feet Gage Height EXTREME FOR PERIOD OF RECORD 2,150 cfs | 4.35 feet | 08/30/2006 FCDMC Annual Surface Water Report, Water Year 2021 Page 315 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 316 WY2021 Events Date of Peak Peak Gage Height (feet) Peak Discharge (cfs) None Hydrograph of peak WY 2021 flow event, No runoff recorded in Water Year 2021. Flood Flow Frequency Flood Flow Frequency N=20, HEC-WRC computation (based on 20 years of data) 2-year 5-year 10-year 20-year 50-year 100-year 801 1,400 1,820 2,210 2,710 3,080 NOTE: These results are based on very limited data. FCDMC Annual Surface Water Report, Water Year 2021 Page 317 Fourth of July Wash, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 0 MEAN 0 MAX 0 MIN 0 AC_FT 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 318 Freestone Basin, ID #32807 Site Data LOCATION Near Lindsay Road south of Guadalupe Road DRAINAGE AREA 2.2 mi2 STREAM TYPE Flood control basin JURISDICTION Gilbert, Arizona WATERSHED Lower East Maricopa Floodway SECTION/TOWNSHIP/RANGE S08 T1S R6E LATITUDE N 33° 21' 26.4" | +33.35734 LONGITUDE W 111° 46' 21.9" | -111.77274 STREAMGAGE INSTALLATION DATE 12/19/1995 - WY 1996 AVAILABLE PERIOD OF RECORD (POR) 12/19/1995 - Current LENGTH OF AVAILABLE POR DATA 25.79 Years | 9,418 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 2.10 feet Gage Height STAFF GAGES 0 ZERO GAGE HEIGHT ELEVATION 1,219.41 feet NAVD88 POINT OF ZERO FLOW None - Pump Control SPILLWAY CREST ELEVATION None TOP OF BASIN ELEVATION 25.0 feet Gage Height FCDMC Annual Surface Water Report, Water Year 2021 Page 319 Location Map FCDMC Annual Surface Water Report, Water Year 2021 Page 320 WY2021 Events Date of Peak 12/10/2020 01/25/2021 01/26/2021 07/24/2021 Peak Gage Height (feet) 4.75 4.72 4.77 6.86 Peak Volume (ac-ft) 2.1 2.1 2.2 8.6 Hydrograph of peak 2021 impoundment event, 07/24/2021 FCDMC Annual Surface Water Report, Water Year 2021 Page 321 Percent Spillway Capacity 2.1 2.1 2.2 8.6 Freestone Basin, volume data Volume, in acre feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 --3 --4 --5 --6 --7 --8 9 1 10 1 11 2 12 1 13 1 1 14 1 1 1 15 1 1 16 1 1 17 1 18 19 20 21 22 --23 4 24 7 25 1 8 26 1 5 27 28 --29 --30 --31 --------1 -------------------------------------------------------------------------------MEAN 0 0 0 0 0 0 0 0 0 1 0 0 MAX 0 1 2 2 1 1 0 0 0 9 1 1 MIN 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0 MAX 9 MIN 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 322 Freestone Basin, stage data Depth, in feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2.1 2.1 2.1 2.1 2.4 2.2 2.1 2.1 2.2 2.1 2.3 2.6 2 2.1 2.1 2.1 2.1 2.1 2.1 2.1 2.1 2.1 2.1 2.2 --3 2.1 2.1 2.1 2.1 2.1 2.1 2.1 2.1 2.1 2.1 2.1 --4 2.1 2.1 2.1 2.1 2.2 2.4 2.1 2.1 2.1 2.1 2.1 --5 2.1 2.1 2.1 2.1 2.3 2.3 2.1 2.1 2.1 2.1 2.1 --6 2.1 2.1 2.1 2.1 2.1 2.1 2.1 2.1 2.3 2.1 2.1 --7 2.1 2.1 2.1 2.1 2.1 2.1 2.1 2.1 2.1 2.1 2.1 --8 2.1 2.7 2.1 2.1 2.2 2.5 2.1 2.5 2.1 2.1 2.1 0.0 9 2.1 3.2 2.1 2.1 2.1 2.2 2.1 2.5 2.1 2.1 2.1 2.1 10 2.1 2.8 4.0 2.1 2.1 2.1 2.1 2.1 2.1 2.1 2.5 2.1 11 2.3 2.3 4.5 2.3 2.1 2.1 2.1 2.1 2.4 2.6 2.3 2.1 12 2.1 2.1 4.4 2.9 2.1 2.1 2.1 2.1 2.6 2.2 2.4 2.1 13 2.1 2.1 4.2 2.5 2.1 3.4 2.1 2.1 2.8 2.1 2.1 2.1 14 2.1 2.1 3.9 2.1 2.1 3.5 2.1 2.1 2.3 3.6 3.1 2.1 15 2.1 2.2 3.8 2.2 2.1 3.5 2.1 2.2 2.1 2.8 2.8 2.1 16 2.3 2.1 3.6 2.1 2.2 2.5 2.1 2.1 2.1 2.2 3.4 2.1 17 2.8 2.1 3.4 2.1 2.1 2.1 2.1 2.1 2.1 2.1 2.7 2.1 18 2.3 2.1 3.1 2.9 2.1 2.1 2.1 2.1 2.1 2.1 2.1 2.3 19 2.1 2.1 2.8 2.5 2.2 2.1 2.1 2.1 2.3 2.2 2.1 2.9 20 2.1 2.1 2.3 2.1 2.1 2.1 2.1 2.1 2.4 2.1 2.1 2.3 21 2.1 2.1 2.1 2.2 2.1 2.1 2.1 2.1 2.3 2.1 2.1 2.1 22 2.1 2.1 2.1 2.5 2.2 2.1 2.1 2.3 --2.1 2.9 2.1 23 2.2 2.1 2.1 2.1 2.2 2.1 2.2 2.6 2.1 5.3 2.3 2.1 24 2.1 2.1 2.1 2.7 2.1 2.1 2.1 2.2 2.1 6.5 2.1 2.1 25 2.1 2.1 2.1 3.6 2.2 2.1 2.1 2.1 2.1 6.6 2.1 2.1 26 2.1 2.1 2.1 3.0 2.3 2.1 2.1 2.1 2.1 5.3 2.1 2.8 27 2.1 2.1 2.1 2.1 2.1 2.1 2.1 2.1 2.1 2.1 2.1 2.4 28 2.1 3.1 2.1 2.4 2.1 2.1 2.1 2.1 2.1 2.1 --2.1 29 2.1 3.1 2.1 2.5 --2.1 2.3 2.1 2.1 2.1 2.4 2.1 30 2.1 2.3 2.1 2.5 --2.1 2.2 2.1 2.1 2.2 2.4 2.1 31 2.1 --2.1 2.2 --2.3 --2.1 --3.9 2.6 -------------------------------------------------------------------------------MEAN 2.1 2.3 2.6 2.3 2.2 2.3 2.1 2.2 2.2 2.8 2.3 2.2 MAX 3.0 3.6 4.8 4.8 3.4 3.6 2.6 2.7 3.0 6.9 4.0 3.2 MIN 2.1 2.1 2.1 2.1 2.1 2.1 2.1 2.1 2.1 2.1 2.1 2.1 -----------------------------------------------------------------------------WTR YR 2021 MEAN 2.31 MAX 6.86 MIN 2.10 FCDMC Annual Surface Water Report, Water Year 2021 Page 323 Galloway Wash at Galloway Road, ID #20607 Site Data LOCATION Located on Galloway Road about 1/8 mile north of Cave Creek Road DRAINAGE AREA 6.4 mi2 STREAM TYPE Natural JURISDICTION Cave Creek, Arizona WATERSHED Cave Creek SECTION/TOWNSHIP/RANGE S34 T6N R4E LATITUDE N 33° 49' 54.1" | +33.83170 LONGITUDE W 111° 55' 43.3" | -111.92870 STREAMGAGE INSTALLATION DATE 08/16/2016 - WY 2016 AVAILABLE PERIOD OF RECORD (POR) 08/16/2016 - Current LENGTH OF AVAILABLE POR DATA 5.13 Years | 1,872 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.15 feet Gage Height STAFF GAGES 1 CREST STAGE GAGES 1 ZERO GAGE HEIGHT ELEVATION 2,285.00 feet NAVD88 POINT OF ZERO FLOW 0.1 feet Gage Height EXTREME FOR PERIOD OF RECORD 1,518 cfs | 2.52 feet GH | 08/23/2018 FCDMC Annual Surface Water Report, Water Year 2021 Page 324 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 325 WY2021 Events Date of Peak Peak Gage Height Peak Discharge (cfs) 08/18/2021 1.40 304 Hydrograph of peak WY 2021 flow event, 08/18/2021 Flood Flow Frequency There is not enough data to compute a flood flow frequency for this gage station. FCDMC Annual Surface Water Report, Water Year 2021 Page 326 Galloway Wash at Galloway Road, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 3 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 3 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 304 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 0 5 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 3 MEAN 0 MAX 304 MIN 0 AC_FT 5 FCDMC Annual Surface Water Report, Water Year 2021 Page 327 Gila River at Olberg Road, ID #42007 Site Data LOCATION Near Sacaton on the Gila River Indian Community DRAINAGE AREA 18,784 mi2 STREAM TYPE Natural Stream JURISDICTION Gila River Indian Community, Arizona WATERSHED Gila SECTION/TOWNSHIP/RANGE S12 T4S R6E LATITUDE N 33° 05' 13.4" | +33.08706 LONGITUDE W 111° 41' 13.2" | -111.68700 STREAMGAGE INSTALLATION DATE 04/12/1995 - WY 1995 AVAILABLE PERIOD OF RECORD (POR) 04/12/1995 - Current LENGTH OF AVAILABLE POR DATA 26.47 Years | 9,669 Days DATA GAPS IN POR 09/19/2016 – 10/31/2016 STAGE GAGE ELEVATION 0.25 feet Gage Height ZERO GAGE HEIGHT ELEVATION 1,284.69 feet NAVD88 POINT OF ZERO FLOW 0.0 feet Gage Height EXTREME FOR PERIOD OF RECORD 5,867 cfs | 6.16 feet | 08/02/2006 FCDMC Annual Surface Water Report, Water Year 2021 Page 328 Watershed map FCDMC Annual Surface Water Report, Water Year 2021 Page 329 WY2021 Events Date of Peak Peak Gage Height Peak Discharge (cfs) None Hydrograph of peak WY 2021 flow event, No runoff recorded in Water Year 2021. Flood Flow Frequency Flood Flow Frequency N=27, HEC-WRC computation (based on 27 years of data) 2-year 5-year 10-year 20-year 50-year 100-year 340 1,440 2,780 4,530 7,450 10,100 FCDMC Annual Surface Water Report, Water Year 2021 Page 330 Gila River at Olberg Road, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 0 MEAN 0 MAX 0 MIN 0 AC_FT 0 *USGS maintained a gage at this site prior to October 1, 1998 (09478350) FCDMC Annual Surface Water Report, Water Year 2021 Page 331 Gila River at Maricopa Road, ID #41707 Site Data LOCATION On Maricopa Road (SR 347) about 5 miles north of Maricopa DRAINAGE AREA 20,312 mi2 STREAM TYPE Natural Stream JURISDICTION Gila River Indian Community, Arizona WATERSHED Lower East Maricopa Floodway SECTION/TOWNSHIP/RANGE S13 T3S R3E LATITUDE N 33° 10' 14.7" | +33.17076 LONGITUDE W 112° 00' 21.7" | -112.00601 STREAMGAGE INSTALLATION DATE 04/09/1995 - WY 1995 AVAILABLE PERIOD OF RECORD (POR) 04/09/1995 - Current LENGTH OF AVAILABLE POR DATA 26.48 Years | 9,672 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 1.36 feet Gage Height CREST STAGE GAGES 2 (USGS maintains) ZERO GAGE HEIGHT ELEVATION 1,115.94 feet NAVD88 POINT OF ZERO FLOW 1.7 feet Gage Height EXTREME FOR PERIOD OF RECORD 8,051 cfs | 3.99 feet | 07/31/2006 FCDMC Annual Surface Water Report, Water Year 2021 Page 332 Watershed for Gila River at Maricopa Road FCDMC Annual Surface Water Report, Water Year 2021 Page 333 WY2021 Events Date of Peak Peak Gage Height Peak Discharge (cfs) None Hydrograph of peak WY 2021 flow event, No runoff recorded in Water Year 2021. Flood Flow Frequency There is not enough data to compute a flood flow frequency for this gage station. FCDMC Annual Surface Water Report, Water Year 2021 Page 334 Gila River at Maricopa Road, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 0 MEAN 0 MAX 0 MIN 0 AC_FT 0 NOTE: The USGS maintains a gage at this site in cooperation with ADOT. See USGS Gage #09479350. See USGS Water-Data Report AZ-16-1 for official data for this site. FCDMC Annual Surface Water Report, Water Year 2021 Page 335 Gila River at 116th Avenue, ID #70707 Site Data LOCATION Located on the Avondale Boulevard bridge crossing of the Gila River DRAINAGE AREA 43,300 mi2 STREAM TYPE Natural Stream JURISDICTION Avondale, Arizona WATERSHED Lower ACDC / South Mountain SECTION/TOWNSHIP/RANGE S36 T1N R1W LATITUDE N 33° 22' 58.2" | +33.38282 LONGITUDE W 112° 18' 29.2" | -112.30812 STREAMGAGE INSTALLATION DATE 12/16/1998 - WY 1999 AVAILABLE PERIOD OF RECORD (POR) 12/16/1998 - Current LENGTH OF AVAILABLE POR DATA 22.79 Years | 8,325 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 1.15 feet Gage Height STAFF GAGES 1 CREST STAGE GAGES 0 ZERO GAGE HEIGHT ELEVATION 929.74 feet NAVD88 POINT OF ZERO FLOW 0.0 feet Gage Height EXTREME FOR PERIOD OF RECORD 49,394 cfs | 9.15 feet | 02/13/2005 FCDMC Annual Surface Water Report, Water Year 2021 Page 336 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 337 WY2021 Events Date of Peak Peak Gage Height Peak Discharge (cfs) None Hydrograph of peak WY 2021 flow event, No flow above base flow in Water Year 2021. Flood Flow Frequency There is not enough data to compute a flood flow frequency for this gage station. FCDMC Annual Surface Water Report, Water Year 2021 Page 338 Gila River at 116th Avenue, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 --6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 0 MEAN 0 MAX 0 MIN 0 AC_FT 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 339 Gila River at Estrella Parkway, ID #83807 Site Data LOCATION Located at Estrella Parkway crossing of the Gila River DRAINAGE AREA 45,585 mi2 STREAM TYPE Natural Stream JURISDICTION Goodyear, Arizona WATERSHED Waterman SECTION/TOWNSHIP/RANGE S31 T1N R1W LATITUDE N 33° 23' 20.6" | +33.38908 LONGITUDE W 112° 23' 32.9" | -112.39248 STREAMGAGE INSTALLATION DATE 12/02/1992 - WY 1993 AVAILABLE PERIOD OF RECORD (POR) 12/02/1992 - Current LENGTH OF AVAILABLE POR DATA 28.83 Years | 10,530 Days DATA GAPS IN POR 01/08/1993 - 03/01/1993 STAGE GAGE ELEVATION 1.92 feet Gage Height STAFF GAGES 2 CREST STAGE GAGES 0 ZERO GAGE HEIGHT ELEVATION 885.59 feet NAVD88 POINT OF ZERO FLOW 1.0 feet Gage Height EXTREME FOR PERIOD OF RECORD 75,883 cfs | 16.45 feet | 02/16/1995 FCDMC Annual Surface Water Report, Water Year 2021 Page 340 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 341 WY2021 Events Date of Peak Peak Gage Height (feet) Peak Discharge (cfs) 07/25/2021 5.24 181 Hydrograph of peak WY 2021 flow event, 07/25/2021 Flood Flow Frequency Flood Flow Frequency From Study of Modified Roosevelt Dam Table 2-4 2-year 5-year 10-year 20-year 50-year 100-year 20,000 50,000 84,000 170,000 217,000 FCDMC Annual Surface Water Report, Water Year 2021 Page 342 Gila River at Estrella Parkway, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 --6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 27 26 --7 27 --28 29 ----30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 35 0 0 MEAN 0 0 0 0 0 0 0 0 0 1 0 0 MAX 0 0 0 0 0 0 0 0 0 181 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 69 0 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 35 MEAN 0 MAX 181 MIN 0 AC_FT 69 FCDMC Annual Surface Water Report, Water Year 2021 Page 343 Golden Eagle Park Dam, ID #78007 Site Data LOCATION In Golden Eagle Park, near Fountain Hills High School DRAINAGE AREA 7.13 mi2 STREAM TYPE Dam of natural drainage JURISDICTION Fountain Hills, Arizona WATERSHED Lower Verde SECTION/TOWNSHIP/RANGE S09 T3N R6E LATITUDE N 33° 37' 07.7" | +33.61880 LONGITUDE W 111° 44' 06.2" | -111.73507 STREAMGAGE INSTALLATION DATE 12/12/1996 - WY 1997 AVAILABLE PERIOD OF RECORD (POR) 12/12/1996 - Current LENGTH OF AVAILABLE POR 24.80 Years | 9,059 Days DATA GAPS IN POR 05/01/2000 - 03/05/2001 (station was located on inflow wash due to construction) STAGE GAGE ELEVATION 3.05 feet Gage Height STAFF GAGES 0 ZERO GAGE HEIGHT ELEVATION 1,696.75 feet NAVD88 POINT OF ZERO FLOW 0.00 feet Gage Height SPILLWAY CREST ELEVATION 20.26 feet Gage Height TOP OF DAM ELEVATION 31.9 feet Gage Height FCDMC Annual Surface Water Report, Water Year 2021 Page 344 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 345 WY2021 Events Date of Peak 07/23/2021 08/11/2021 08/13/2021 Peak Gage Height (feet) 5.62 6.28 13.00 Peak Volume (ac-ft) 0.2 0.5 17.5 Hydrograph of peak 2021 impoundment event, 08/13/2021 FCDMC Annual Surface Water Report, Water Year 2021 Page 346 Percent Spillway Capacity 0.2 0.5 17.4 Golden Eagle Park Dam, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 44 12 13 70 14 10 15 16 17 18 19 20 21 22 23 19 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 19 124 0 MEAN 0 0 0 0 0 0 0 0 0 1 4 0 MAX 0 0 0 0 0 0 0 0 0 434 970 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 38 246 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 143 MEAN 0 MAX 970 MIN 0 AC_FT 284 FCDMC Annual Surface Water Report, Water Year 2021 Page 347 Golden Eagle Park Dam, volume data Volume, in acre-feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 1 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 18 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0 MAX 18 MIN 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 348 Golden Eagle Park Dam, stage data Depth, in feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 2 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 4 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 5 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 6 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 7 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 8 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 9 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 10 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 11 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.3 3.0 12 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 13 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.7 3.0 14 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.1 3.0 15 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 16 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 17 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 18 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 19 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 20 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 21 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 22 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 23 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.1 3.0 3.0 24 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 25 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 26 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 27 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 28 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 29 3.0 3.0 3.0 3.0 --3.0 3.0 3.0 3.0 3.0 3.0 3.0 30 3.0 3.0 3.0 3.0 --3.0 3.0 3.0 3.0 3.0 3.0 3.0 31 3.0 --3.0 3.0 --3.0 --3.0 --3.0 3.0 -------------------------------------------------------------------------------MEAN 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.1 3.1 3.0 MAX 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 5.6 13.0 3.0 MIN 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 3.05 MAX 13.00 MIN 3.05 FCDMC Annual Surface Water Report, Water Year 2021 Page 349 Grand Avenue at 27th Avenue Basin, ID #3807 Site Data LOCATION Located near north and east of Thomas Road and 27th Ave DRAINAGE AREA 2.1 mi2 STREAM TYPE Flood control basin JURISDICTION Phoenix, Arizona WATERSHED Lower ACDC SECTION/TOWNSHIP/RANGE S25 T2N R2E LATITUDE N 33° 28' 54.8" | +33.48189 LONGITUDE W 112° 06' 58.6" | -112.11627 STREAMGAGE INSTALLATION DATE 10/06/2015 - WY 2016 AVAILABLE PERIOD OF RECORD (POR) 10/06/2015 - Current LENGTH OF AVAILABLE POR DATA 5.99 Years | 2,187 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.45 feet Gage Height STAFF GAGES 0 ZERO GAGE HEIGHT ELEVATION 1,089.01 feet NAVD88 POINT OF ZERO FLOW 0.00 feet Gage Height SPILLWAY CREST ELEVATION No spillway TOP OF BASIN ELEVATION 8.6 feet Gage Height FCDMC Annual Surface Water Report, Water Year 2021 Page 350 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 351 WY2021 Events Date of Peak 12/10/2020 01/26/2021 01/29/2021 07/03/2021 07/14/2021 07/25/2021 07/31/2021 08/14/2021 09/01/2021 Peak Gage Height (feet) 1.94 1.49 1.49 2.16 1.62 3.83 3.01 4.22 2.16 Peak Volume (ac-ft) 6.0 4.5 4.5 6.8 4.9 12.9 9.7 14.4 6.8 Hydrograph of peak 2021 impoundment event, 08/14/2021 FCDMC Annual Surface Water Report, Water Year 2021 Page 352 Percent Spillway Capacity 16.1 12.2 12.2 18.1 13.3 34.7 26.2 38.9 18.1 Grand Avenue at 27th Avenue Basin, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 4 2 2 1 3 3 3 1 3 3 4 --3 3 3 5 3 2 2 6 3 1 1 7 2 8 2 9 10 2 11 3 12 3 13 2 14 2 2 4 15 2 2 3 16 2 1 3 17 1 3 18 3 19 4 20 3 21 3 22 3 23 2 2 24 3 1 25 1 4 26 2 4 1 27 2 3 2 28 2 3 2 29 1 --3 1 30 2 --2 31 --2 ------4 -------------------------------------------------------------------------------TOTAL 0 0 17 14 4 0 0 0 0 47 51 22 MEAN 0 0 1 0 0 0 0 0 0 2 2 1 MAX 0 0 3 3 2 0 0 0 0 7 7 3 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 34 28 7 0 0 0 0 94 101 43 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 155 MEAN 0 MAX 7 MIN 0 AC_FT 307 FCDMC Annual Surface Water Report, Water Year 2021 Page 353 Grand Avenue at 27th Avenue Basin, volume data Volume, in acre-feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 3 7 4 2 3 7 6 3 2 1 6 6 4 --1 6 5 5 5 6 4 4 6 5 2 3 7 4 2 8 3 2 9 2 2 10 4 2 2 11 5 2 2 12 5 2 2 13 4 2 2 14 4 4 8 15 3 4 7 16 3 2 6 17 2 2 7 18 2 7 19 2 7 20 1 7 21 1 6 1 22 1 5 1 23 4 4 1 24 1 6 3 1 25 2 7 2 1 26 4 8 2 3 27 4 7 2 4 28 3 6 2 3 29 3 --5 2 2 30 4 --4 2 1 31 --4 ------9 2 -------------------------------------------------------------------------------MEAN 0 0 1 1 0 0 0 0 0 3 4 2 MAX 0 0 6 5 4 0 0 0 0 13 14 7 MIN 0 0 0 0 0 0 0 0 0 0 1 0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 1 MAX 14 MIN 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 354 Grand Avenue at 27th Avenue Basin, stage data Depth, in feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 0.5 0.5 0.5 0.5 1.2 0.5 0.5 0.5 0.5 0.5 2.3 1.4 2 0.5 0.5 0.5 0.5 0.9 0.5 0.5 0.5 0.5 0.5 2.1 2.1 3 0.5 0.5 0.5 0.5 0.8 0.5 0.5 0.5 0.5 0.8 1.9 1.9 4 0.5 0.5 0.5 --0.7 0.5 0.5 0.5 0.5 2.1 1.5 1.5 5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 1.9 1.3 1.3 6 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 1.6 0.9 1.0 7 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 1.4 0.7 0.5 8 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 1.1 0.7 0.5 9 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.8 0.7 0.5 10 0.5 0.5 1.4 0.5 0.5 0.5 0.5 0.5 0.5 0.8 0.7 0.5 11 0.5 0.5 1.7 0.5 0.5 0.5 0.5 0.5 0.5 0.7 0.7 0.5 12 0.5 0.5 1.6 0.5 0.5 0.5 0.5 0.5 0.5 0.7 0.7 0.5 13 0.5 0.5 1.3 0.5 0.5 0.5 0.5 0.5 0.5 0.7 0.9 0.5 14 0.5 0.5 1.2 0.5 0.5 0.5 0.5 0.5 0.5 1.3 2.6 0.5 15 0.5 0.5 1.1 0.5 0.5 0.5 0.5 0.5 0.5 1.2 2.2 0.5 16 0.5 0.5 1.0 0.5 0.5 0.5 0.5 0.5 0.5 0.8 2.1 0.5 17 0.5 0.5 0.9 0.5 0.5 0.5 0.5 0.5 0.5 0.7 2.1 0.5 18 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.7 2.2 0.5 19 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.7 2.3 0.5 20 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.7 2.1 0.5 21 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.7 1.9 0.6 22 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.6 1.6 0.7 23 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 1.4 1.3 0.7 24 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 2.1 1.0 0.6 25 0.5 0.5 0.5 0.9 0.5 0.5 0.5 0.5 0.5 2.3 0.8 0.6 26 0.5 0.5 0.5 1.4 0.5 0.5 0.5 0.5 0.5 2.6 0.8 1.1 27 0.5 0.5 0.5 1.3 0.5 0.5 0.5 0.5 0.5 2.2 0.8 1.4 28 0.5 0.5 0.5 1.2 0.5 0.5 0.5 0.5 0.5 1.9 0.8 1.2 29 0.5 0.5 0.5 1.1 --0.5 0.5 0.5 0.5 1.5 0.8 0.9 30 0.5 0.5 0.5 1.5 --0.5 0.5 0.5 0.5 1.3 0.8 0.6 31 0.5 --0.5 1.4 --0.5 --0.5 --2.7 0.8 -------------------------------------------------------------------------------MEAN 0.5 0.5 0.7 0.6 0.5 0.5 0.5 0.5 0.5 1.2 1.4 0.8 MAX 0.5 0.5 1.9 1.5 1.2 0.5 0.5 0.5 0.5 3.8 4.2 2.2 MIN 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.7 0.5 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0.66 MAX 4.22 MIN 0.45 FCDMC Annual Surface Water Report, Water Year 2021 Page 355 Granite Reef Diversion, ID #75007 Site Data LOCATION Located along Bush Highway near Granite Reef Dam DRAINAGE AREA 33.2 mi2 STREAM TYPE Engineered Channel JURISDICTION Maricopa County, Arizona WATERSHED Lower Verde SECTION/TOWNSHIP/RANGE S18 T2N R7E LATITUDE N 33° 30' 43.1" | +33.51197 LONGITUDE W 111° 41' 01.9" | -111.68386 STREAMGAGE INSTALLATION DATE 07/21/2005 - WY 2005 AVAILABLE PERIOD OF RECORD (POR) 07/21/2005 - Current LENGTH OF POR 16.20 Years | 5,916 Days DATA GAPS IN POR None STAGE GAGE ELEVATION -0.25 feet Gage Height ZERO GAGE HEIGHT ELEVATION 1,336.36 feet NAVD88 POINT OF ZERO FLOW -0.4 feet Gage Height EXTREME FOR PERIOD OF RECORD 770 cfs | 1.78 Feet | 03/07/2010 FCDMC Annual Surface Water Report, Water Year 2021 Page 356 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 357 WY2021 Events Date of Peak 07/10/2021 07/15/2021 08/11/2021 08/12/2021 08/13/2021 Peak Gage Height 0.20 0.89 1.02 1.09 0.89 Peak Discharge (cfs) 16 303 375 417 303 Hydrograph of peak WY 2021 flow event, 08/12/2021 Flood Flow Frequency There is not enough data to compute a flood flow frequency for this gage station. FCDMC Annual Surface Water Report, Water Year 2021 Page 358 Granite Reef Diversion, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 42 12 58 13 4 14 80 15 10 108 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 10 291 0 MEAN 0 0 0 0 0 0 0 0 0 0 9 0 MAX 0 0 0 0 0 0 0 0 0 303 417 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 20 577 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 301 MEAN 1 MAX 417 MIN 0 AC_FT 597 FCDMC Annual Surface Water Report, Water Year 2021 Page 359 Granite Reef Wash, ID #57507 Site Data LOCATION On McDowell Road near Granite Reef Road DRAINAGE AREA 7.2 mi2 STREAM TYPE 1-Barrel Culvert JURISDICTION Scottsdale, Arizona WATERSHED Lower Indian Bend SECTION/TOWNSHIP/RANGE S36 T2N R4E LATITUDE N 33° 27' 57.6" | +33.46599 LONGITUDE W 111° 53' 54.9" | -111.89857 STREAMGAGE INSTALLATION DATE 06/26/2007 - WY 2007 AVAILABLE PERIOD OF RECORD (POR) 06/26/2007 - Current LENGTH OF AVAILABLE POR DATA DATA 14.27 Years | 5,211 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 1.28 feet Gage Height ZERO GAGE HEIGHT ELEVATION 1,202.72 feet NAVD88 POINT OF ZERO FLOW 0.0 feet Gage Height EXTREME FOR PERIOD OF RECORD 235 cfs | 7.76 feet | 09/08/2014 FCDMC Annual Surface Water Report, Water Year 2021 Page 360 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 361 WY2021 Events Date of Peak 12/10/2020 01/25/2021 01/29/2021 03/12/2021 07/03/2021 07/14/2021 07/16/2021 07/22/2021 07/23/2021 07/24/2021 07/24/2021 07/25/2021 07/30/2021 08/14/2021 08/16/2021 08/31/2021 09/01/2021 09/18/2021 09/26/2021 Peak Gage Height 2.42 3.02 1.72 2.05 2.05 2.07 2.17 7.68 4.99 2.97 2.85 4.24 2.07 2.67 3.79 2.90 3.39 2.90 2.00 Hydrograph of peak WY 2021 flow event, 07/22/2021 Peak Discharge (cfs) 14 20 8 11 11 11 12 219 47 20 19 36 11 17 30 19 25 19 10 Flood Flow Frequency Flood Flow Frequency N=15, HEC-WRC computation (based on 15 years of data) 2-year 5-year 10-year 20-year 50-year 100-year 61 105 149 204 303 402 NOTE(1): These results are based on very limited data. FCDMC Annual Surface Water Report, Water Year 2021 Page 362 Granite Reef Wash, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 4 2 1 3 2 4 5 6 7 8 9 10 3 1 11 12 3 13 14 2 4 15 16 2 1 17 2 18 2 19 20 21 22 11 23 11 24 4 25 2 5 26 3 27 28 29 2 --30 1 --31 --------1 1 -------------------------------------------------------------------------------TOTAL 0 0 3 6 0 3 0 0 0 39 8 9 MEAN 0 0 0 0 0 0 0 0 0 1 0 0 MAX 0 0 14 20 0 11 0 0 0 219 30 25 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 6 11 0 5 0 0 0 78 16 18 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 68 MEAN 0 MAX 219 MIN 0 AC_FT 135 FCDMC Annual Surface Water Report, Water Year 2021 Page 363 Greene Wash at SR84 – ID #64007 Site Data LOCATION On SR 84 between Stanfield and Casa Grande DRAINAGE AREA 1,729 mi2 STREAM TYPE Channelized Natural Stream JURISDICTION Pinal County, Arizona WATERSHED Santa Rosa SECTION/TOWNSHIP/RANGE S21 T6S R4E LATITUDE N 32° 52' 46.1" | +32.87948 LONGITUDE W 111° 56' 01.3" | -111.93369 STREAMGAGE INSTALLATION DATE 03/23/1994 - WY 1994 AVAILABLE PERIOD OF RECORD (POR) 03/23/1994 - Current LENGTH OF AVAILABLE POR DATA 27.53 Years | 10,054 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.10 feet Gage Height STAFF GAGES 1 CREST STAGE GAGES 2 ZERO GAGE HEIGHT ELEVATION 1,295.26 feet NAVD88 EXTREME FOR PERIOD OF RECORD 1,391 cfs | 3.67 feet GH | 08/02/2006 FCDMC Annual Surface Water Report, Water Year 2021 Page 364 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 365 WY2021 Events Date of Peak 07/25/2021 07/27/2021 08/14/2021 08/17/2021 08/19/2021 Peak Gage Height 0.17 0.67 0.40 0.37 0.25 Peak Discharge (cfs) 177 269 213 207 188 Hydrograph of peak WY 2021 flow event, 07/27/2021 Flood Flow Frequency There is not enough data to compute a flood flow frequency for this gage station. FCDMC Annual Surface Water Report, Water Year 2021 Page 366 Greene Wash at SR84, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 23 15 16 17 55 18 6 19 95 20 21 22 23 24 25 14 26 27 195 28 69 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 277 179 0 MEAN 0 0 0 0 0 0 0 0 0 9 6 0 MAX 0 0 0 0 0 0 0 0 0 269 213 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 550 356 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 457 MEAN 1 MAX 269 MIN 0 AC_FT 906 FCDMC Annual Surface Water Report, Water Year 2021 Page 367 Guadalupe Road Channel, ID #35707 Site Data LOCATION On Guadalupe Road between Power and Sossaman Roads DRAINAGE AREA 18.6 mi2 STREAM TYPE Engineered Channel JURISDICTION Mesa, Arizona WATERSHED Upper East Maricopa Floodway SECTION/TOWNSHIP/RANGE S06 T1S R7E LATITUDE N 33° 21' 54.8" | +33.36523 LONGITUDE W 111° 40' 34.4" | -111.67621 STREAMGAGE INSTALLATION DATE 08/07/1998 - WY 1998 AVAILABLE PERIOD OF RECORD (POR) 08/07/1998 - Current LENGTH OF AVAILABLE POR DATA 23.15 Years | 8,456 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.50 feet Gage Height STAFF GAGES 0 CREST STAGE GAGES 1 ZERO GAGE HEIGHT ELEVATION 1,345.02 feet NAVD88 POINT OF ZERO FLOW 0.0 feet Gage Height EXTREME FOR PERIOD OF RECORD 940 cfs | 2.88 feet | 07/23/2002 FCDMC Annual Surface Water Report, Water Year 2021 Page 368 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 369 WY2021 Events Date of Peak 07/24/2021 07/25/2021 08/11/2021 08/12/2021 08/14/2021 08/17/2021 Peak Gage Height (feet) 1.67 1.57 1.15 1.48 1.48 1.48 Peak Discharge (cfs) 333 307 172 270 270 270 Hydrograph of peak WY 2021 flow event, 07/24/2021 Flood Flow Frequency Flood Flow Frequency N=24, HEC-WRC computation (based on 24 years of data) 2-year 5-year 10-year 20-year 50-year 100-year 339 588 776 973 1,250 1,470 NOTE(1): These results are based on very limited data. FCDMC Annual Surface Water Report, Water Year 2021 Page 370 Guadalupe Road Channel, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 12 20 13 14 37 15 16 1 17 29 18 19 20 21 22 23 24 25 25 43 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 68 100 0 MEAN 0 0 0 0 0 0 0 0 0 2 3 0 MAX 0 0 0 0 0 0 0 0 0 333 270 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 135 198 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 168 MEAN 0 MAX 333 MIN 0 AC_FT 333 FCDMC Annual Surface Water Report, Water Year 2021 Page 371 Guadalupe FRS, ID #68207 Site Data LOCATION Located west of I-10 and south of Baseline Road DRAINAGE AREA 1.87 mi2 STREAM TYPE Dam of natural drainage JURISDICTION Phoenix, Arizona WATERSHED South Mountain SECTION/TOWNSHIP/RANGE S05 T1S R4E LATITUDE N 33° 22' 19.0" | +33.37194 LONGITUDE W 111° 58' 13.7" | -111.97047 STREAMGAGE INSTALLATION DATE 06/29/1989 - WY 1989 AVAILABLE PERIOD OF RECORD (POR) 06/29/1989 - Current LENGTH OF AVAILABLE POR DATA 32.26 Years | 11,782 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.26 feet Gage Height STAFF GAGES 1 ZERO GAGE HEIGHT ELEVATION 1,251.38 feet NAVD88 PZF (CONTROLLED OUTLET) 0.64 feet Gage Height PZF (UNCONTROLLED OUTLET) 9.64 feet Gage Height SPILLWAY ELEVATION 24.64 feet Gage Height TOP OF DAM ELEVATION 32.14 feet Gage Height FCDMC Annual Surface Water Report, Water Year 2021 Page 372 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 373 WY2021 Events Date of Peak Peak Gage Height (feet) None Hydrograph of peak 2021 impoundment event, No impoundments recorded in Water Year 2021. FCDMC Annual Surface Water Report, Water Year 2021 Page 374 Peak Volume (ac-ft) Percent Spillway Capacity Guadalupe FRS, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 0 MEAN 0 MAX 0 MIN 0 AC_FT 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 375 Guadalupe FRS, volume data Volume, in acre-feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0 MAX 0 MIN 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 376 Guadalupe FRS, stage data Depth, in feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 2 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 4 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 5 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 6 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 7 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 8 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 9 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 10 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 11 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 12 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 13 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 14 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 15 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 16 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 17 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 18 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 19 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 20 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 21 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 22 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 23 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 24 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 25 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 26 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 27 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 28 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 29 0.3 0.3 0.3 0.3 --0.3 0.3 0.3 0.3 0.3 0.3 0.3 30 0.3 0.3 0.3 0.3 --0.3 0.3 0.3 0.3 0.3 0.3 0.3 31 0.3 --0.3 0.3 --0.3 --0.3 --0.3 0.3 -------------------------------------------------------------------------------MEAN 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 MAX 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 MIN 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0.26 MAX 0.26 MIN 0.26 FCDMC Annual Surface Water Report, Water Year 2021 Page 377 Harquahala FRS, ID #26007 Site Data LOCATION Located northeast of I-10 and Salome Highway interchange DRAINAGE AREA 102.3 mi2 STREAM TYPE Dam of natural drainage JURISDICTION Maricopa County, Arizona WATERSHED Lower Centennial SECTION/TOWNSHIP/RANGE S05 T2N R8W LATITUDE N 33° 32' 55.3" | +33.54868 LONGITUDE W 113° 05' 51.8" | -113.09772 STREAMGAGE INSTALLATION DATE 03/01/1994 - WY 1994 AVAILABLE PERIOD OF RECORD (POR) 03/01/1994 - Current LENGTH OF AVAILABLE POR DATA 27.59 Years | 10,076 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.38 feet Gage Height STAFF GAGES 7 CREST STAGE GAGES 0 ZERO GAGE HEIGHT ELEVATION 1,374.89 feet NAVD88 POINT OF ZERO FLOW (CONTROLLED) 0.57 feet Gage Height POINT OF ZERO FLOW (UNCONTROLLED) 14.50 feet Gage Height SPILLWAY ELEVATION 35.7 feet Gage Height TOP OF DAM ELEVATION 46.7 feet Gage Height FCDMC Annual Surface Water Report, Water Year 2021 Page 378 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 379 WY2021 Events Date of Peak 07/30/2021 08/11/2021 09/24/2021 Peak Gage Height (feet) 1.79 1.69 1.50 Peak Volume (ac-ft) 0.1 0.1 0.0 Hydrograph of peak 2021 impoundment event, 07/30/2021 FCDMC Annual Surface Water Report, Water Year 2021 Page 380 Percent Spillway Capacity 0.0 0.0 0.0 Harquahala FRS, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 0 MEAN 0 MAX 0 MIN 0 AC_FT 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 381 Harquahala FRS, volume data Volume, in acre feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0 MAX 0 MIN 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 382 Harquahala FRS, stage data Depth, in feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 1.3 0.4 2 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 1.2 0.4 3 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 1.0 0.4 4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.9 0.4 5 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.8 0.4 6 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.8 0.4 7 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.7 0.4 8 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.6 0.4 9 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.5 0.4 10 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.5 0.4 11 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.7 0.4 12 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 1.4 0.4 13 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 1.2 0.4 14 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 1.2 0.4 15 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 1.1 0.4 16 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 1.0 0.4 17 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.9 0.4 18 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.8 0.4 19 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.8 0.4 20 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.7 0.4 21 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.6 0.4 22 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.6 0.4 23 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.5 0.4 24 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 1.2 25 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 1.2 26 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 1.0 27 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 1.0 28 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.9 29 0.4 0.4 0.4 0.4 --0.4 0.4 0.4 0.4 0.4 0.4 0.8 30 0.4 0.4 0.4 0.4 --0.4 0.4 0.4 0.4 0.5 0.4 0.7 31 0.4 --0.4 0.4 --0.4 --0.4 --1.6 0.4 -------------------------------------------------------------------------------MEAN 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.7 0.5 MAX 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 1.8 1.7 1.5 MIN 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0.43 MAX 1.79 MIN 0.38 FCDMC Annual Surface Water Report, Water Year 2021 Page 383 Hartman Wash, ID #51207 Site Data LOCATION About 3 miles west of Vulture Mine Road on US 60 DRAINAGE AREA 5.4 mi2 STREAM TYPE Natural Stream JURISDICTION Wickenburg, Arizona WATERSHED Lower Hassayampa SECTION/TOWNSHIP/RANGE S15 T7N R6W LATITUDE N 33° 57' 46.0" | +33.96277 LONGITUDE W 112° 49' 40.7" | -112.82798 STREAMGAGE INSTALLATION DATE 07/06/1994 - WY 1994 AVAILABLE PERIOD OF RECOD 07/06/1994 - Current LENGTH OF AVAILABLE POR DATA 27.24 Years | 9,949 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.05 feet Gage Height STAFF GAGES 1 CREST STAGE GAGES 3 ZERO GAGE HEIGHT ELEVATION 2,454.40 feet NAVD88 POINT OF ZERO FLOW -0.1 feet Gage Height EXTREME FOR PERIOD OF RECORD 3,400 cfs | 7.94 feet | 07/30/2005 FCDMC Annual Surface Water Report, Water Year 2021 Page 384 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 385 WY2021 Events Date of Peak Peak Gage Height (feet) Peak Discharge (cfs) None Hydrograph of peak WY 2021 flow event, No runoff recorded during Water Year 2021. Flood Flow Frequency Flood Flow Frequency N=48, HEC-WRC computation (based on 48 years of data) 2-year 5-year 10-year 20-year 50-year 100-year 242 949 1,710 2,620 3,990 5,110 NOTE: These results are based on limited data. FCDMC Annual Surface Water Report, Water Year 2021 Page 386 Hartman Wash, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 --14 15 16 17 18 19 20 21 22 23 24 25 --26 --27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 6 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 0 MEAN 0 MAX 6 MIN 0 AC_FT 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 387 Hassayampa River at Wagoner, ID #54307 Site Data LOCATION Located on the Wagoner Road bridge crossing of the Hassayampa River DRAINAGE AREA 78 mi2 STREAM TYPE Natural Stream JURISDICTION Yavapai County, Arizona WATERSHED Upper Hassayampa SECTION/TOWNSHIP/RANGE S09 T11N R3W LATITUDE N 34° 18' 36.5" | +34.31016 LONGITUDE W 112° 34' 07.6" | -112.56879 STREAMGAGE INSTALLATION DATE 12/19/1983 - WY 1984 AVAILABLE PERIOD OF RECORD (POR) 11/27/1991 - Current LENGTH OF AVAILABLE POR DATA 29.85 Years | 10,901 Days DATA GAPS IN POR 09/25/2007 - 05/28/2008 STAGE GAGE ELEVATION 2.18 feet Gage Height STAFF GAGES 0 CREST STAGE GAGES 0 ZERO GAGE HEIGHT ELEVATION 3,739.72 feet NAVD88 POINT OF ZERO FLOW 0.0 feet Gage Height EXTREME FOR PERIOD OF RECORD 5,068 cfs | 5.00 feet | 01/08/1993 FCDMC Annual Surface Water Report, Water Year 2021 Page 388 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 389 WY2021 Events Date of Peak Peak Gage Height (feet) Peak Discharge (cfs) 07/25/2021 2.76 629 Hydrograph of peak WY 2021 flow event, 07/25/2021 Flood Flow Frequency Flood Flow Frequency N=30, HEC-WRC computation (based on 30 years of data) 2-year 5-year 10-year 20-year 50-year 100-year 427 1,720 3,300 5,420 9,100 12,600 NOTE: These results are based on limited data. FCDMC Annual Surface Water Report, Water Year 2021 Page 390 Hassayampa River at Wagoner, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 9 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 9 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 629 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 17 0 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 9 MEAN 0 MAX 629 MIN 0 AC_FT 17 FCDMC Annual Surface Water Report, Water Year 2021 Page 391 Hassayampa River at Box Canyon, ID #53507 Site Data LOCATION Northeast of Wickenburg DRAINAGE AREA 417 mi2 STREAM TYPE Natural Stream JURISDICTION Yavapai County, Arizona WATERSHED Lower Hassayampa SECTION/TOWNSHIP/RANGE S07 T8N R4W LATITUDE N 34° 02' 42.3" | +34.04508 LONGITUDE W 112° 42' 36.5" | -112.71013 STREAMGAGE INSTALLATION DATE 11/17/1983 - WY 1984 AVAILABLE PERIOD OF RECORD (POR) 10/16/1991 - Current LENGTH OF AVAILABLE POR DATA 29.96 Years | 10,943 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 3.30 feet Gage Height STAFF GAGES 1 CREST STAGE GAGES 2 ZERO GAGE HEIGHT ELEVATION 2,238.01 feet NAVD88 POINT OF ZERO FLOW 2.0 feet Gage Height EXTREME FOR PERIOD OF RECORD 26,000 cfs | 18.90 feet | 01/21/2010 EXTREME OUTSIDE PERIOD OF RECORD 58,000 cfs | 34.6 feet | 09/05/1970 FCDMC Annual Surface Water Report, Water Year 2021 Page 392 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 393 WY2021 Events Date of Peak 07/17/2021 07/20/2021 07/25/2021 08/18/2021 Peak Gage Height (feet) 5.40 5.35 3.98 6.13 Peak Discharge (cfs) 1,004 958 127 1,653 Hydrograph of peak WY 2021 flow event, 08/18/2021 Flood Flow Frequency Flood Flow Frequency N=71, HEC-WRC computation (based on 71 years (discontinuous) of data) 2-year 5-year 10-year 20-year 50-year 100-year 3,190 9,830 17,000 26,200 41,600 56,000 NOTE: These results are based on available data. FCDMC Annual Surface Water Report, Water Year 2021 Page 394 Hassayampa River at Box Canyon, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 1 5 1 6 1 7 8 9 10 11 12 1 13 1 14 1 15 16 17 10 18 67 19 1 3 20 5 21 22 23 24 25 --3 26 --27 1 28 1 29 --1 30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 16 0 17 70 0 MEAN 0 0 0 0 0 0 0 1 0 1 2 0 MAX 0 0 0 0 0 0 0 8 0 1004 1653 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 31 0 35 139 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 103 MEAN 0 MAX 1653 MIN 0 AC_FT 205 FCDMC Annual Surface Water Report, Water Year 2021 Page 395 Hassayampa River at US60, ID #45707 Site Data LOCATION US 60 crossing of the Hassayampa River DRAINAGE AREA 711 mi2 STREAM TYPE Natural Stream JURISDICTION Wickenburg, Arizona WATERSHED Lower Hassayampa SECTION/TOWNSHIP/RANGE S12 T7N R5W LATITUDE N 33° 58' 13.2" | +33.97032 LONGITUDE W 112° 43' 37.3" | -112.72704 STREAMGAGE INSTALLATION DATE 03/14/1994 - WY 1994 AVAILABLE PERIOD OF RECORD (POR) 03/14/1994 - 10/01/2010 LENGTH OF AVAILABLE POR DATA 27.55 Years | 10,063 Days DATA GAPS IN POR 06/26/2009 - 04/13/2010 STAGE GAGE ELEVATION 0.60 feet Gage Height STAFF GAGES 0 CREST STAGE GAGES 2 ZERO GAGE HEIGHT ELEVATION 2,034.85 feet NAVD88 POINT OF ZERO FLOW 0.5 feet Gage Height EXTREME FOR PERIOD OF RECORD 16,089 cfs | 4.32 feet | 02/12/2005 EXTREME OUTSIDE PERIOD OF RECORD 52,000 cfs | 10.3 feet | 09/05/1970 FCDMC Annual Surface Water Report, Water Year 2021 Page 396 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 397 WY2021 Events Date of Peak 07/17/2021 07/20/2021 07/21/2021 07/22/2021 07/23/2021 07/25/2021 08/11/2021 08/18/2021 Peak Gage Height (feet) 1.65 2.09 1.77 1.02 0.95 2.14 1.53 2.47 Peak Discharge (cfs) 1,276 2,374 1,546 220 158 2,517 1,044 3,683 Hydrograph of peak WY 2021 flow event, 08/18/2021 Flood Flow Frequency Flood Flow Frequency N=28, HEC-WRC computation (based on 28 years of data) 2-year 5-year 10-year 20-year 50-year 100-year 3,030 10,400 18,000 27,100 40,900 52,400 NOTE: These results are based on very limited data. FCDMC Annual Surface Water Report, Water Year 2021 Page 398 Hassayampa River at US60, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 1 5 1 6 7 1 8 1 9 10 11 67 12 13 14 15 16 17 237 18 48 19 336 20 201 21 235 22 32 23 71 24 25 --579 26 --27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 1 0 0 0 0 0 0 1 0 1355 454 0 MEAN 0 0 0 0 0 0 0 0 0 44 15 0 MAX 1 0 0 0 0 0 1 1 0 2517 3683 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 2 0 0 0 0 0 1 1 0 2687 901 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 1811 MEAN 5 MAX 3683 MIN 0 AC_FT 3591 FCDMC Annual Surface Water Report, Water Year 2021 Page 399 Hassayampa River near Morristown, ID #45507 Site Data LOCATION Located about 6 miles south of Wickenburg DRAINAGE AREA 796 mi2 STREAM TYPE Natural Stream JURISDICTION Maricopa County, Arizona WATERSHED Lower Hassayampa SECTION/TOWNSHIP/RANGE S03 T6N R4W LATITUDE N 33° 53' 05.3" | +33.88481 LONGITUDE W 112° 39' 42.3" | -112.66174 STREAMGAGE INSTALLATION DATE 05/07/1996 - WY 1996 AVAILABLE PERIOD OF RECORD (POR) 05/07/1996 - Current LENGTH OF AVAILABLE POR DATA 25.40 Years | 9,278 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 7.25 feet Gage Height STAFF GAGES 2 CREST STAGE GAGES 0 ZERO GAGE HEIGHT ELEVATION 1,832.62 feet NAVD88 POINT OF ZERO FLOW 8.0 feet Gage Height EXTREME FOR PERIOD OF RECORD 16,900 cfs | 14.21 feet | 01/22/2010 EXTREME OUTSIDE PERIOD OF RECORD 47,500 cfs | 09/05/1970 FCDMC Annual Surface Water Report, Water Year 2021 Page 400 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 401 WY2021 Events Date of Peak 07/26/2021 08/19/2021 09/03/2021 Peak Gage Height (feet) 7.72 8.47 7.60 Peak Discharge (cfs) 116 527 81 Hydrograph of peak WY 2021 flow event, 08/19/2021 Flood Flow Frequency Flood Flow Frequency N=68, HEC-WRC computation (based on 68 years of data) 2-year 5-year 10-year 20-year 50-year 100-year 2,840 8,960 14,700 21,000 29,900 36,800 NOTE: These results are based on available data. FCDMC Annual Surface Water Report, Water Year 2021 Page 402 Hassayampa River near Morristown, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 3 4 5 6 --7 8 9 10 11 12 13 --14 ----15 16 17 18 19 40 20 2 21 94 22 1 23 24 25 33 26 89 27 40 28 --29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 271 40 3 MEAN 0 0 0 0 0 0 0 0 0 9 1 0 MAX 0 0 0 0 0 0 0 0 0 116 527 81 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 538 80 6 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 314 MEAN 1 MAX 527 MIN 0 AC_FT 623 FCDMC Annual Surface Water Report, Water Year 2021 Page 403 Hassayampa River at I-10, ID #48007 Site Data LOCATION Located on the eastbound I-10 bridge DRAINAGE AREA 1,450 mi2 STREAM TYPE Natural Stream JURISDICTION Maricopa County, Arizona WATERSHED Lower Hassayampa SECTION/TOWNSHIP/RANGE S03 T1N R5W LATITUDE N 33° 27' 28.2" | +33.45782 LONGITUDE W 112° 45' 40.7" | -112.76139 STREAMGAGE INSTALLATION DATE 11/09/1994 - WY 1995 AVAILABLE PERIOD OF RECORD (POR) 11/09/1994 - Current LENGTH OF AVAILABLE POR DATA 26.89 Years | 9,823 Days DATA GAPS IN POR 02/15/2011 - 01/30/2012 STAGE GAGE ELEVATION 2.40 feet Gage Height STAFF GAGES 2 CREST STAGE GAGES 3 ZERO GAGE HEIGHT ELEVATION 1,018.72 feet NAVD88 POINT OF ZERO FLOW 1.9 feet Gage Height EXTREME FOR PERIOD OF RECORD 27,000 cfs | 7.05 feet | 10/27/2000 FCDMC Annual Surface Water Report, Water Year 2021 Page 404 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 405 WY2021 Events Date of Peak Peak Gage Height (feet) Peak Discharge (cfs) 07/25/2021 1.98 319 Hydrograph of peak WY 2021 flow event, 07/25/2021 Flood Flow Frequency Flood Flow Frequency N=27, HEC-WRC computation (based on 27 years of data) 2-year 5-year 10-year 20-year 50-year 100-year 393 2,110 5,070 10,500 23,700 40,900 NOTE(1): These results are based on very limited data. NOTE(2): FEMA 100-year discharge is 75,164 cfs FCDMC Annual Surface Water Report, Water Year 2021 Page 406 Hassayampa River at I-10, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 --6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 1 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 1 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 319 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 2 0 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 1 MEAN 0 MAX 319 MIN 0 AC_FT 2 FCDMC Annual Surface Water Report, Water Year 2021 Page 407 Hesperus Dam, ID #79007 Site Data LOCATION East of Golden Eagle Boulevard off of Richwood Avenue DRAINAGE AREA 2.91 mi2 STREAM TYPE Dam of natural drainage JURISDICTION Fountain Hills, Arizona WATERSHED Lower Verde SECTION/TOWNSHIP/RANGE S04 T3N R6E LATITUDE N 33° 38' 11.8" | +33.63661 LONGITUDE W 111° 44' 47.6" | -111.74656 STREAMGAGE INSTALLATION DATE 12/18/1996 - WY 1997 AVAILABLE PERIOD OF RECORD (POR) 12/18/1996 - Current LENGTH OF AVAILABLE POR DATA 24.79 Years | 9,053 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 1.03 feet Gage Height STAFF GAGES 0 ZERO GAGE HEIGHT ELEVATION 1,855.61 feet NAVD88 POINT OF ZERO FLOW 0.00 feet Gage Height SPILLWAY CREST ELEVATION 35.2 feet Gage Height TOP OF DAM ELEVATION 41.1 feet Gage Height FCDMC Annual Surface Water Report, Water Year 2021 Page 408 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 409 WY2021 Events Date of Peak 07/23/2021 08/11/2021 08/13/2021 Peak Gage Height (feet) 3.56 3.27 11.28 Peak Volume (ac-ft) 0.4 0.3 11.3 Hydrograph of peak 2021 impoundment event, 08/13/2021 FCDMC Annual Surface Water Report, Water Year 2021 Page 410 Percent Spillway Capacity 0.2 0.2 4.1 Hesperus Dam, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 5 12 13 10 14 6 15 16 17 18 19 20 21 22 23 2 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 2 21 0 MEAN 0 0 0 0 0 0 0 0 0 0 1 0 MAX 0 0 0 0 0 0 0 0 0 94 202 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 5 42 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 24 MEAN 0 MAX 202 MIN 0 AC_FT 47 FCDMC Annual Surface Water Report, Water Year 2021 Page 411 Hesperus Dam, volume data Volume, in acre feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 11 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0 MAX 11 MIN 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 412 Hesperus Dam, stage data Depth, in feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 2 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 3 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 4 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 5 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 6 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 7 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 9 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 10 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 11 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.9 0.8 12 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 13 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 1.2 0.8 14 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.9 0.8 15 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 16 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 17 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 18 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 19 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 20 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 21 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 22 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 23 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.9 0.8 0.8 24 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 25 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 26 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 27 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 28 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 29 0.8 0.8 0.8 0.8 --0.8 0.8 0.8 0.8 0.8 0.8 0.8 30 0.8 0.8 0.8 0.8 --0.8 0.8 0.8 0.8 0.8 0.8 0.8 31 0.8 --0.8 0.8 --0.8 --0.8 --0.8 0.8 -------------------------------------------------------------------------------MEAN 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 MAX 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 3.6 11.3 0.8 MIN 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0.79 MAX 11.28 MIN 0.79 FCDMC Annual Surface Water Report, Water Year 2021 Page 413 Indian Bend Wash at Sweetwater Avenue – ID #58307 Site Data LOCATION Near 36th Street and Sweetwater Ave DRAINAGE AREA 11.7 mi2 STREAM TYPE Channelized Stream JURISDICTION Phoenix, Arizona WATERSHED Middle Indian Bend SECTION/TOWNSHIP/RANGE S13 T3N R3E LATITUDE N 33° 36' 13.3" | +33.60369 LONGITUDE W 112° 00' 16.0" | -112.00445 STREAMGAGE INSTALLATION DATE 12/27/1990 - WY 1991 AVAILABLE PERIOD OF RECORD (POR) 03/27/1992 - Current LENGTH OF AVAILABLE POR DATA DATA 29.51 Years | 10,780 Days DATA GAPS IN POR 04/27/1997 - 11/22/1998 STAGE GAGE ELEVATION 0.00 feet Gage Height ZERO GAGE HEIGHT ELEVATION 1,387.63 feet NAVD88 POINT OF ZERO FLOW 0.0 feet Gage Height EXTREME FOR PERIOD OF RECORD 2,093 cfs | 4.90 feet | 08/02/2005 FCDMC Annual Surface Water Report, Water Year 2021 Page 414 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 415 WY2021 Events Date of Peak 12/10/2020 01/25/2021 07/02/2021 07/03/2021 07/13/2021 07/14/2021 07/23/2021 07/23/2021 07/25/2021 07/31/2021 08/11/2021 08/13/2021 08/17/2021 08/18/2021 09/26/2021 Peak Gage Height (feet) 0.92 1.32 0.29 0.44 0.29 1.41 1.81 1.51 1.90 0.44 0.88 3.95 1.02 1.90 0.63 Hydrograph of peak WY 2021 flow event, 08/13/2021 Peak Discharge (cfs) 117 183 27 51 27 198 272 215 281 51 111 1,059 133 281 76 Flood Flow Frequency (NOTE: Results for the HEC-WRC analysis are based on very limited data.) Flood Flow Frequency N=30, HEC-WRC computation (based on 30 years of data) 2-year 5-year 10-year 20-year 50-year 100-year 453 889 1,240 1,620 2,180 2,630 3,500 6,000 FEMA FIS, Flood Flow Frequency 2,000 FCDMC Annual Surface Water Report, Water Year 2021 Page 416 Indian Bend Wash at Sweetwater Avenue, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 1 3 3 4 7 5 6 7 8 9 10 21 11 17 12 5 13 3 45 14 15 89 15 16 17 28 18 61 19 1 20 21 22 23 102 24 14 25 36 29 26 9 16 27 1 28 29 --1 30 --31 --------6 -------------------------------------------------------------------------------TOTAL 0 0 21 45 0 0 0 0 0 183 247 17 MEAN 0 0 1 1 0 0 0 0 0 6 8 1 MAX 0 0 117 183 0 0 1 0 0 281 1059 76 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 41 89 0 0 1 0 0 363 490 33 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 513 MEAN 1 MAX 1059 MIN 0 AC_FT 1017 FCDMC Annual Surface Water Report, Water Year 2021 Page 417 Indian Bend Wash at Shea Boulevard, ID #59507 Site Data LOCATION Near 52nd Street and Shea Boulevard DRAINAGE AREA 24.6 mi2 STREAM TYPE Channelized Natural Stream JURISDICTION Phoenix, Arizona WATERSHED Lower Indian Bend SECTION/TOWNSHIP/RANGE S29 T3N R4E LATITUDE N 33° 34' 53.2" | +33.58143 LONGITUDE W 111° 58' 06.3" | -111.96841 STREAMGAGE INSTALLATION DATE 06/09/1998 - WY 1998 AVAILABLE PERIOD OF RECORD (POR) 06/09/1998 - Current LENGTH OF AVAILABLE POR DATA DATA 23.31 Years | 8,515 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.35 feet Gage Height ZERO GAGE HEIGHT ELEVATION 1,344.26 feet NAVD88 POINT OF ZERO FLOW 0.0 feet Gage Height EXTREME FOR PERIOD OF RECORD 5,616 cfs | 4.68 feet | 08/02/2005 FCDMC Annual Surface Water Report, Water Year 2021 Page 418 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 419 WY2021 Events Date of Peak 12/10/2020 12/10/2020 01/23/2021 01/24/2021 01/25/2021 01/25/2021 01/29/2021 03/12/2021 07/03/2021 07/10/2021 07/14/2021 07/16/2021 07/16/2021 07/23/2021 07/24/2021 07/25/2021 07/31/2021 08/10/2021 08/11/2021 08/11/2021 08/13/2021 08/14/2021 08/17/2021 08/17/2021 08/18/2021 09/01/2021 09/18/2021 09/26/2021 Peak Gage Height (feet) 1.24 1.19 1.07 1.14 1.34 1.22 1.12 1.14 1.30 1.20 1.58 1.05 1.18 2.45 1.90 1.80 1.18 1.00 1.15 1.65 2.60 3.12 1.73 2.57 3.02 1.20 0.65 1.03 FCDMC Annual Surface Water Report, Water Year 2021 Page 420 Peak Discharge (cfs) 146 121 73 100 205 136 92 100 180 126 359 67 117 1,226 626 535 117 53 104 414 1,425 2,192 476 1,386 2,031 126 13 61 Hydrograph of peak WY 2021 flow event, 08/18/2021 Flood Flow Frequency Flood Flow Frequency N=35, HEC-WRC computation (based on 35 years of data, USGS and FCDMC data) 2-year 5-year 10-year 20-year 50-year 100-year 1,150 2,430 3,410 4,400 5,700 6,670 NOTE: These results are based on limited data. FCDMC Annual Surface Water Report, Water Year 2021 Page 421 Indian Bend Wash at Shea Boulevard, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 25 2 5 3 20 1 4 69 5 6 7 8 2 9 10 73 11 15 11 37 7 53 12 4 18 29 13 22 81 14 133 576 15 19 14 16 18 2 17 6 212 18 479 1 19 1 51 20 4 1 21 22 4 23 11 8 505 24 37 1 213 25 77 120 26 70 11 22 27 14 8 28 29 14 --30 34 --3 31 --3 ------14 3 -------------------------------------------------------------------------------TOTAL 0 0 113 262 0 20 0 0 9 1178 1513 63 MEAN 0 0 4 8 0 1 0 0 0 38 49 2 MAX 0 0 146 205 0 100 0 0 22 1226 2192 77 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 224 519 0 40 0 0 17 2336 3001 125 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 3157 MEAN 9 MAX 2192 MIN 0 AC_FT 6262 FCDMC Annual Surface Water Report, Water Year 2021 Page 422 Indian Bend Wash near Indian Bend Road – ID #56307 Site Data LOCATION About 1/4 mile south of Indian Bend Road DRAINAGE AREA 88 mi2 STREAM TYPE Channelized Natural Stream JURISDICTION Scottsdale, Arizona WATERSHED Lower Indian Bend SECTION/TOWNSHIP/RANGE S11 T2N R4E LATITUDE N 33° 32' 04.0" | +33.53444 LONGITUDE W 111° 54' 51.1" | -111.91422 STREAMGAGE INSTALLATION DATE 09/28/1983 - WY 1983 AVAILABLE PERIOD OF RECORD (POR) 03/27/1992 - Current LENGTH OF AVAILABLE POR DATA 29.51 Years | 10,780 Days DATA GAPS IN POR 09/28/1983 - 03/27/1992 | 07/07/1999 - 01/25/2000 STAGE GAGE ELEVATION -0.15 feet Gage Height ZERO GAGE HEIGHT ELEVATION 1,267.55 feet Gage NAVD88 POINT OF ZERO FLOW -0.2 feet Gage Height EXTREME FOR PERIOD OF RECORD 9,324 cfs | 5.85 feet | 07/24/1992 EXTREME OUTSIDE PERIOD OF RECORD 21,000 cfs | 06/22/1972 FCDMC Annual Surface Water Report, Water Year 2021 Page 423 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 424 WY2021 Events Date of Peak 07/23/2021 07/23/2021 07/25/2021 08/11/2021 08/14/2021 08/17/2021 08/17/2021 08/18/2021 Peak Gage Height (feet) 2.94 4.11 2.49 2.59 1.32 2.09 1.69 2.52 Peak Discharge (cfs) 294 900 170 202 19 91 38 184 Hydrograph of peak WY 2021 flow event, 07/23/2021 Flood Flow Frequency Flood Flow Frequency N=30, HEC-WRC computation (based on 30 years of data) 2-year 5-year 10-year 20-year 50-year 100-year 844 2,250 3,940 6,380 11,300 16,700 NOTE: These results are based on limited data. FCDMC Annual Surface Water Report, Water Year 2021 Page 425 Indian Bend Wash near Indian Bend Road, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 1 4 1 1 5 6 7 8 9 10 11 19 12 9 13 8 14 13 15 8 16 6 17 21 18 35 19 17 20 7 21 3 22 14 1 23 202 4 24 34 2 25 29 26 10 27 7 28 6 29 --4 30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 308 153 0 MEAN 0 0 0 0 0 0 0 0 0 10 5 0 MAX 0 0 0 0 0 0 0 0 0 900 202 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 610 304 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 461 MEAN 1 MAX 900 MIN 0 AC_FT 914 FCDMC Annual Surface Water Report, Water Year 2021 Page 426 Indian Bend Wash at McDonald Drive – ID #57207 Site Data LOCATION On McDonald Drive west of Hayden Road DRAINAGE AREA 88 mi2 STREAM TYPE Engineered Natural Stream JURISDICTION Scottsdale, Arizona WATERSHED Lower Indian Bend SECTION/TOWNSHIP/RANGE S11 T2N R4E LATITUDE N 33° 31' 26.7" | +33.52407 LONGITUDE W 111° 54' 35.8" | -111.90994 STREAMGAGE INSTALLATION DATE 11/24/1997 - WY 1998 AVAILABLE PERIOD OF RECORD (POR) 11/24/1997 - Current LENGTH OF AVAILABLE POR DATA DATA 23.85 Years | 8,712 Days DATA GAPS IN POR None STAGE GAGE ELEVATION -1.90 feet Gage Height ZERO GAGE HEIGHT ELEVATION 1,262.37 feet NAVD88 POINT OF ZERO FLOW -1.9 feet Gage Height EXTREME FOR PERIOD OF RECORD 3,482 cfs | 4.03 feet | 09/08/2014 FCDMC Annual Surface Water Report, Water Year 2021 Page 427 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 428 WY2021 Events Date of Peak 07/23/2021 07/23/2021 07/25/2021 08/11/2021 08/12/2021 08/13/2021 08/14/2021 08/17/2021 08/18/2021 Peak Gage Height (feet) 1.67 2.47 0.73 1.54 0.03 0.06 0.46 1.14 1.01 Peak Discharge (cfs) 1,170 1,833 517 1,076 156 168 355 785 691 Hydrograph of peak WY 2021 flow event, 07/23/2021 Flood Flow Frequency Flood Flow Frequency N=24, HEC-WRC computation (based on 24 years of data) 2-year 5-year 10-year 20-year 50-year 100-year 997 2,010 2,940 4,020 5,770 7,350 NOTE: These results are based on limited data. FCDMC Annual Surface Water Report, Water Year 2021 Page 429 Indian Bend Wash at McDonald Drive, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 1 4 5 6 7 8 9 10 11 134 12 107 13 71 14 203 15 100 16 31 17 303 18 215 19 253 20 53 21 19 22 58 4 23 584 24 280 25 217 26 76 27 44 28 27 29 --14 30 --3 31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 1305 1492 1 MEAN 0 0 0 0 0 0 0 0 0 42 48 0 MAX 0 31 0 4 0 0 0 0 0 1833 1076 8 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 1 0 1 0 0 0 0 0 2589 2959 2 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 2799 MEAN 8 MAX 1833 MIN 0 AC_FT 5551 FCDMC Annual Surface Water Report, Water Year 2021 Page 430 Indian Bend Wash at Indian School Road – ID #56507 Site Data LOCATION On Indian School Road west of Hayden Road DRAINAGE AREA 90 mi2 STREAM TYPE Improved Natural Stream JURISDICTION Scottsdale, Arizona WATERSHED Lower Indian Bend SECTION/TOWNSHIP/RANGE S23 T2N R4E LATITUDE N 33° 29' 42.2" | +33.49505 LONGITUDE W 111° 54' 40.5" | -111.91126 STREAMGAGE INSTALLATION DATE 11/25/1997 - WY 1998 AVAILABLE PERIOD OF RECORD (POR) 11/25/1997 - Current LENGTH OF AVAILABLE POR DATA 23.85 Years | 8,711 Days DATA GAPS IN POR 11/30/2009 - 02/16/2010 STAGE GAGE ELEVATION 0.72 feet Gage Height ZERO GAGE HEIGHT ELEVATION 1,235.28 feet NAVD88 POINT OF ZERO FLOW 0.0 feet Gage Height EXTREME FOR PERIOD OF RECORD 3,887 cfs | 5.50 feet | 09/08/2014 FCDMC Annual Surface Water Report, Water Year 2021 Page 431 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 432 WY2021 Events Date of Peak 07/22/2021 07/23/2021 07/23/2021 08/11/2021 08/13/2021 08/17/2021 08/17/2021 08/18/2021 Peak Gage Height (feet) 3.68 3.11 4.33 2.58 1.31 1.66 0.96 1.99 Peak Discharge (cfs) 1,738 1,254 2,359 859 189 332 76 495 Hydrograph of peak WY 2021 flow event, 07/23/2021 Flood Flow Frequency Flood Flow Frequency N=24, HEC-WRC computation (based on 24 years of data) 2-year 5-year 10-year 20-year 50-year 100-year 884 2,000 2,980 4,080 5,730 7,130 NOTE: These results are based on limited data. FCDMC Annual Surface Water Report, Water Year 2021 Page 433 Indian Bend Wash at Indian School Road, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 10 2 40 3 40 4 40 5 20 6 7 8 9 10 11 71 12 32 13 5 14 84 15 37 16 17 70 18 68 19 125 20 21 22 102 23 12 783 24 398 25 336 26 48 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 150 12 0 1667 491 0 MEAN 0 0 0 0 0 0 5 0 0 54 16 0 MAX 0 0 0 0 0 0 40 47 0 2359 859 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 298 23 0 3307 974 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 2320 MEAN 6 MAX 2359 MIN 0 AC_FT 4601 FCDMC Annual Surface Water Report, Water Year 2021 Page 434 Indian Bend Wash near McKellips Road, ID #55707 Site Data LOCATION About 1/3 mile south of McKellips Road DRAINAGE AREA 101 mi2 STREAM TYPE Channelized Natural Ephemeral Stream JURISDICTION Tempe, Arizona WATERSHED Lower Indian Bend SECTION/TOWNSHIP/RANGE S11 T1N R4E LATITUDE N 33° 26' 57.2" | +33.44923 LONGITUDE W 111° 54' 53.3" | -111.91482 STREAMGAGE INSTALLATION DATE 05/21/1985 - WY 1985 AVAILABLE PERIOD OF RECORD (POR) 11/10/1987 - Current LENGTH OF AVAILABLE POR DATA 33.89 Years | 12,379 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.00 feet Gage Height ZERO GAGE HEIGHT ELEVATION 1,173.84 feet Gage NAVD88 POINT OF ZERO FLOW 0.00 feet Gage Height EXTREME FOR PERIOD OF RECORD 5,841 cfs | 6.90 feet | 09/08/2014 FCDMC Annual Surface Water Report, Water Year 2021 Page 435 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 436 WY2021 Events Date of Peak 07/23/2021 08/12/2021 Peak Gage Height (feet) 1.90 0.88 Peak Discharge (cfs) 484 93 Hydrograph of peak WY 2021 flow event, 07/23/2021 Flood Flow Frequency Flood Flow Frequency N=34, HEC-WRC computation (based on 34 years of data) 2-year 5-year 10-year 20-year 50-year 100-year 1,070 2,770 4,510 6,740 10,500 14,200 NOTE: These results are based on limited data. FCDMC Annual Surface Water Report, Water Year 2021 Page 437 Indian Bend Wash near McKellips Road, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 4 11 2 4 21 3 1 4 19 4 1 11 5 5 5 18 5 6 1 8 5 3 7 1 --4 5 3 8 1 --3 4 2 9 1 2 2 2 10 1 1 5 2 11 1 19 2 12 1 11 53 1 13 1 1 16 29 1 14 1 23 42 1 15 1 17 40 1 16 1 17 22 17 1 16 36 18 1 13 46 19 1 10 38 3 20 1 3 23 2 21 1 3 9 2 22 20 4 2 23 1 278 3 2 24 1 100 3 2 25 1 66 3 1 26 1 28 3 1 27 1 12 2 1 28 1 5 2 1 29 --4 1 1 30 --4 1 31 --------4 -------------------------------------------------------------------------------TOTAL 0 16 0 0 0 7 0 0 3 699 421 98 MEAN 0 1 0 0 0 0 0 0 0 23 14 3 MAX 0 1 0 0 0 2 0 0 0 484 93 23 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 32 0 0 0 13 0 0 7 1386 836 195 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 1244 MEAN 3 MAX 484 MIN 0 AC_FT 2468 FCDMC Annual Surface Water Report, Water Year 2021 Page 438 Indian Bend Wash Interceptor Channel – ID #56807 Site Data LOCATION Between Pima and Hayden Roads north of the Arizona Canal DRAINAGE AREA 35 mi2 STREAM TYPE Engineered Channel JURISDICTION Scottsdale, Arizona WATERSHED Lower Indian Bend SECTION/TOWNSHIP/RANGE S12 T2N R4E LATITUDE N 33° 31' 59.4" | +33.53317 LONGITUDE W 111° 53' 52.4" | -111.89789 STREAMGAGE INSTALLATION DATE 04/21/1994 - WY 1994 AVAILABLE PERIOD OF RECORD (POR) 04/21/1994 - Current LENGTH OF AVAILABLE POR DATA 27.45 Years | 10,025 Days DATA GAPS IN POR 06/16/1999 - 01/11/2000 STAGE GAGE ELEVATION 0.00 feet Gage Height ZERO GAGE HEIGHT ELEVATION 1,271.46 feet NAVD88 POINT OF ZERO FLOW 0.0 feet Gage Height EXTREME FOR PERIOD OF RECORD 1,542 cfs | 5.78 feet | 08/11/2018 FCDMC Annual Surface Water Report, Water Year 2021 Page 439 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 440 WY2021 Events Date of Peak 07/22/2021 07/23/2021 07/25/2021 08/12/2021 08/14/2021 08/17/2021 Peak Gage Height (feet) 2.56 2.49 1.32 1.07 0.39 0.99 Peak Discharge (cfs) 230 215 43 27 6 22 Hydrograph of peak WY 2021 flow event, 07/22/2021 Flood Flow Frequency Flood Flow Frequency N=28, HEC-WRC computation (based on 28 years of data) 2-year 5-year 10-year 20-year 50-year 100-year 59 311 706 1,350 2,720 4,280 NOTE: These results are based on limited data. FCDMC Annual Surface Water Report, Water Year 2021 Page 441 Indian Bend Wash Interceptor Channel, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 4 13 14 2 15 16 17 6 18 19 20 21 22 8 23 52 24 5 25 6 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 71 12 0 MEAN 0 0 0 0 0 0 0 0 0 2 0 0 MAX 0 0 0 0 0 0 0 0 0 230 27 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 140 25 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 83 MEAN 0 MAX 230 MIN 0 AC_FT 165 FCDMC Annual Surface Water Report, Water Year 2021 Page 442 Jackrabbit Wash, ID #45007 Site Data LOCATION Located near the intersection of Vulture Mine and Wickenburg Roads DRAINAGE AREA 120 mi2 STREAM TYPE Natural Stream JURISDICTION Maricopa County, Arizona WATERSHED Lower Hassayampa SECTION/TOWNSHIP/RANGE S04 T4N R6W LATITUDE N 33° 42' 55.6" | +33.71543 LONGITUDE W 112° 52' 54.4" | -112.88179 STREAMGAGE INSTALLATION DATE 10/31/2000 - WY 2001 AVAILABLE PERIOD OF RECORD (POR) 10/31/2000 - Current LENGTH OF AVAILABLE POR DATA 20.92 Years | 7,640 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 2.30 feet Gage Height STAFF GAGES 0 CREST STAGE GAGES 1 ZERO GAGE HEIGHT ELEVATION 1,700.28 feet NAVD88 POINT OF ZERO FLOW 0.7 feet Gage Height EXTREME FOR PERIOD OF RECORD 7,974 cfs | 6.18 feet | 09/09/2014 EXTREME OUTSIDE PERIOD OF RECORD 32,400 cfs | 9.90 feet | 10/27/2000 FCDMC Annual Surface Water Report, Water Year 2021 Page 443 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 444 WY2021 Events Date of Peak Peak Gage Height (feet) Peak Discharge (cfs) None Hydrograph of peak WY 2021 flow event, No runoff recorded during Water Year 2021. Flood Flow Frequency Flood Flow Frequency N=48, HEC-WRC computation (based on 48 years of data) 2-year 5-year 10-year 20-year 50-year 100-year 1,030 4,530 8,700 14,000 22,700 30,100 NOTE: These results are based on limited data. FCDMC Annual Surface Water Report, Water Year 2021 Page 445 Jackrabbit Wash, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 --26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 0 MEAN 0 MAX 0 MIN 0 AC_FT 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 446 Lake Margherite – ID #59007 Site Data LOCATION On Hayden Road about 1/4 mile south of Via Linda DRAINAGE AREA 4.91 mi2 STREAM TYPE Engineered Channel JURISDICTION Scottsdale, Arizona WATERSHED Lower Indian Bend SECTION/TOWNSHIP/RANGE S36 T3N R4E LATITUDE N 33° 33' 49.2" | +33.56367 LONGITUDE W 111° 53' 59.0" | -111.89972 STREAMGAGE INSTALLATION DATE 11/24/1997 - WY 1998 AVAILABLE PERIOD OF RECORD (POR) 11/24/1997 - Current LENGTH OF AVAILABLE POR DATA DATA 23.85 Years | 8,712 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.80 feet Gage Height ZERO GAGE HEIGHT ELEVATION 1,320.80 feet NAVD88 POINT OF ZERO FLOW 0.0 feet Gage Height EXTREME FOR PERIOD OF RECORD 286 cfs | 2.03 feet | 08/02/2005 FCDMC Annual Surface Water Report, Water Year 2021 Page 447 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 448 WY2021 Events Date of Peak 07/23/2021 09/26/2021 Peak Gage Height (feet) 1.10 0.82 Peak Discharge (cfs) 58 20 Hydrograph of peak WY 2021 flow event, 07/23/2021 Flood Flow Frequency Flood Flow Frequency From USGS Streamstats 2-year 5-year 10-year 20-year 50-year 100-year 334 738 1,090 1,390 2,000 2,760 FCDMC Annual Surface Water Report, Water Year 2021 Page 449 Lake Margherite, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 5 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 5 0 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 20 58 0 20 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 10 1 0 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 6 MEAN 0 MAX 58 MIN 0 AC_FT 11 FCDMC Annual Surface Water Report, Water Year 2021 Page 450 Laveen Basin, ID #67807 Site Data LOCATION Located near 43rd Avenue and Southern Avenue DRAINAGE AREA Not Determined STREAM TYPE Flood control basin JURISDICTION Phoenix, Arizona WATERSHED South Mountain SECTION/TOWNSHIP/RANGE S34 T1N R2E LATITUDE N 33° 23' 25.2" | +33.39033 LONGITUDE W 112° 09' 02.6" | -112.15072 STREAMGAGE INSTALLATION DATE 11/07/2006 - WY 2007 AVAILABLE PERIOD OF RECORD (POR) 11/07/2006 - Current LENGTH OF AVAILABLE POR DATA 14.90 Years | 5,442 Days DATA GAPS IN POR None STAGE GAGE TYPE Pressure Transducer STAGE GAGE ELEVATION 0.20 feet Gage Height ZERO GAGE HEIGHT ELEVATION 1,003.12 feet NAVD88 POINT OF ZERO FLOW 0.00 feet Gage Height SPILLWAY CREST ELEVATION 20.0 feet Gage Height TOP OF BASIN ELEVATION 21.2 feet Gage Height FCDMC Annual Surface Water Report, Water Year 2021 Page 451 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 452 WY2021 Events Date of Peak 12/10/2020 01/26/2021 07/03/2021 07/14/2021 07/25/2021 08/10/2021 08/14/2021 09/02/2021 09/18/2021 Peak Gage Height (feet) 1.98 0.91 2.44 4.87 4.34 1.37 6.56 2.89 1.74 Peak Volume (ac-ft) 1.1 0.1 2.6 10.7 8.9 0.3 17.6 4.0 0.5 Hydrograph of peak 2021 impoundment event, 08/14/2021 FCDMC Annual Surface Water Report, Water Year 2021 Page 453 Percent Spillway Capacity 0.9 0.1 2.1 8.5 7.0 0.3 13.9 2.8 0.4 Laveen Basin, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 1 2 9 3 1 9 4 1 4 5 6 7 8 9 10 3 11 12 13 14 9 12 15 12 12 16 10 12 17 7 11 18 10 19 7 5 20 21 22 23 3 24 9 25 11 26 11 27 9 28 3 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 3 0 0 0 0 0 0 85 65 28 MEAN 0 0 0 0 0 0 0 0 0 3 2 1 MAX 0 0 7 0 0 0 0 0 0 12 12 9 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 7 0 0 0 0 0 0 169 129 56 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 182 MEAN 0 MAX 12 MIN 0 AC_FT 361 FCDMC Annual Surface Water Report, Water Year 2021 Page 454 Laveen Basin, volume data Volume, in acre-feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 4 3 3 4 1 5 6 7 8 9 10 11 12 13 14 7 14 15 7 11 16 4 8 17 2 6 18 5 19 2 1 20 21 22 23 1 24 4 25 6 26 7 27 3 28 1 29 --30 --31 ---------------------------------------------------------------------------------------MEAN 0 0 0 0 0 0 0 0 0 1 2 0 MAX 0 0 1 0 0 0 0 0 0 11 18 4 MIN 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0 MAX 18 MIN 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 455 Laveen Basin, stage data Depth, in feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.8 0.9 2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.9 2.8 3 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.5 0.8 2.6 4 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 1.6 0.6 1.8 5 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 1.1 0.6 0.3 6 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.7 0.6 0.2 7 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.5 0.6 0.2 8 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.5 0.6 0.2 9 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.6 0.6 0.2 10 0.2 0.2 1.3 0.2 0.2 0.2 0.2 0.2 0.2 0.6 1.0 0.2 11 0.2 0.2 1.1 0.2 0.2 0.2 0.2 0.2 0.2 0.6 0.6 0.2 12 0.2 0.2 0.3 0.2 0.2 0.2 0.2 0.2 0.2 0.6 0.6 0.2 13 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.6 0.7 0.2 14 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 3.4 5.7 0.2 15 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 3.8 4.9 0.2 16 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 3.0 4.2 0.2 17 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 2.2 3.6 0.2 18 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 1.1 3.0 0.7 19 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.9 2.3 1.8 20 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.7 1.1 0.9 21 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.7 0.8 0.2 22 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.9 0.6 0.2 23 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.3 1.6 0.6 0.2 24 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 2.8 0.6 0.2 25 0.2 0.2 0.2 0.4 0.2 0.2 0.2 0.2 0.2 3.6 0.6 0.2 26 0.2 0.2 0.2 0.4 0.2 0.2 0.2 0.2 0.2 3.7 0.6 0.2 27 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 2.7 0.7 0.2 28 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 1.6 0.6 0.2 29 0.2 0.2 0.2 0.2 --0.2 0.2 0.2 0.2 0.8 0.6 0.2 30 0.2 0.2 0.2 0.2 --0.2 0.2 0.2 0.2 0.8 0.6 0.2 31 0.2 --0.2 0.2 --0.2 --0.2 --0.8 0.7 -------------------------------------------------------------------------------MEAN 0.2 0.2 0.3 0.2 0.2 0.2 0.2 0.2 0.2 1.4 1.3 0.5 MAX 0.2 0.2 2.0 0.9 0.2 0.4 0.2 0.2 0.7 4.9 6.6 2.9 MIN 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.5 0.2 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0.43 MAX 6.56 MIN 0.20 FCDMC Annual Surface Water Report, Water Year 2021 Page 456 Magma FRS, ID #42307 Site Data LOCATION Located east of Hunt Highway along Arizona Farms Road DRAINAGE AREA 20.6 mi2 STREAM TYPE Dam of natural drainage JURISDICTION Florence, Arizona WATERSHED Gila / Queen Creek SECTION/TOWNSHIP/RANGE S35 T3S R9E LATITUDE N 33° 07' 11.2" | +33.11978 LONGITUDE W 111° 24' 08.9" | -111.40248 STREAMGAGE INSTALLATION DATE 11/15/2007 - WY 2008 AVAILABLE PERIOD OF RECORD (POR) 11/15/2007 - Current Day LENGTH OF AVAILABLE POR RECORD 13.88 Years | 5,069 Days DATA GAPS IN POR 04/12/2012 - 11/03/2013 STAGE GAGE ELEVATION 1,601.40 feet NAVD88 STAFF GAGES 1 ZERO GAGE HEIGHT ELEVATION 1,601.00 feet NAVD88 POINT OF ZERO FLOW 1,601.50 feet NAVD88 SPILLWAY ELEVATION 1,623.20 feet NAVD88 TOP OF DAM ELEVATION 1,628.30 feet NAVD88 NORMAL DRAWDOWN RATE -0.25 feet per hour FCDMC Annual Surface Water Report, Water Year 2021 Page 457 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 458 WY2021 Events Date of Peak 07/14/2021 07/23/2021 07/24/2021 07/25/2021 08/14/2021 08/17/2021 09/02/2021 Peak Gage Height (feet) 7.14 3.96 8.27 12.51 8.41 7.23 1.08 Peak Volume (ac-ft) 142.2 11.2 214.6 650.8 225.1 148.4 0.0 Hydrograph of peak 2021 impoundment event, 07/25/2021 FCDMC Annual Surface Water Report, Water Year 2021 Page 459 Percent Spillway Capacity 2.6 0.2 3.9 11.7 4.1 2.7 0.0 Magma FRS, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 37 48 15 41 57 16 1 13 17 53 18 36 19 2 20 21 22 23 20 24 34 25 81 26 86 27 70 28 36 29 --2 30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 408 209 0 MEAN 0 0 0 0 0 0 0 0 0 13 7 0 MAX 0 0 0 0 0 0 0 0 0 94 71 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 808 415 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 617 MEAN 2 MAX 94 MIN 0 AC_FT 1223 FCDMC Annual Surface Water Report, Water Year 2021 Page 460 Magma FRS, volume data Volume, in acre-feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 72 134 15 46 114 16 5 17 105 18 37 19 20 21 22 23 2 24 89 25 420 26 471 27 233 28 43 29 --30 --31 ---------------------------------------------------------------------------------------MEAN 0 0 0 0 0 0 0 0 0 44 13 0 MAX 0 0 0 0 0 0 0 0 0 659 225 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 5 MAX 659 MIN 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 461 Magma FRS, stage data Depth, in feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 2 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.6 3 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.4 4 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 5 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 6 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 7 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.2 0.1 8 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 9 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 10 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 11 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.2 0.1 0.1 0.1 0.1 12 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 13 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 14 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 4.4 5.8 0.1 15 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 5.0 6.6 0.1 16 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.7 2.6 0.1 17 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 6.3 0.1 18 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 4.6 0.1 19 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 1.5 0.1 20 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.4 0.1 21 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.2 0.1 22 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.2 0.1 0.1 23 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 3.2 0.2 0.1 24 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 4.7 0.1 0.1 25 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 10.2 0.1 0.1 26 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 11.1 0.2 0.1 27 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 8.4 0.1 0.1 28 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 4.6 0.1 0.1 29 0.1 0.1 0.1 0.1 --0.1 0.1 0.1 0.1 1.6 0.1 0.1 30 0.1 0.1 0.1 0.1 --0.1 0.1 0.1 0.1 0.2 0.1 0.1 31 0.1 --0.1 0.1 --0.1 --0.1 --0.1 0.1 -------------------------------------------------------------------------------MEAN 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.2 0.1 1.8 1.0 0.2 MAX 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.2 0.1 12.6 8.4 1.1 MIN 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0.37 MAX 12.57 MIN 0.15 FCDMC Annual Surface Water Report, Water Year 2021 Page 462 Martinez Creek, ID #49507 Site Data LOCATION About a mile northwest of the Scenic Loop Road and US 93 intersection DRAINAGE AREA 105 mi2 STREAM TYPE Natural Stream JURISDICTION Yavapai County, Arizona WATERSHED Lower Hassayampa SECTION/TOWNSHIP/RANGE S20 T8N R5W LATITUDE N 34° 01' 41.8" | +34.02828 LONGITUDE W 112° 47' 32.1" | -112.79224 STREAMGAGE INSTALLATION DATE 11/23/1994 - WY 1995 AVAILABLE PERIOD OF RECORD (POR) 11/23/1994 - Current LENGTH OF AVAILABLE POR DATA 26.86 Years | 9,809 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 2.80 feet Gage Height STAFF GAGES 0 CREST STAGE GAGES 0 ZERO GAGE HEIGHT ELEVATION 2,305.96 feet NAVD88 POINT OF ZERO FLOW 0.0 feet Gage Height EXTREME FOR PERIOD OF RECORD 10,562 cfs | 11.42 feet | 07/18/2015 FCDMC Annual Surface Water Report, Water Year 2021 Page 463 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 464 WY2021 Events Date of Peak 07/16/2021 07/29/2021 Peak Gage Height (feet) 2.92 3.07 Peak Discharge (cfs) 81 87 Hydrograph of peak WY 2021 flow event, 07/29/2021 Flood Flow Frequency Flood Flow Frequency N=27, HEC-WRC computation (based on 27 years of data) 2-year 5-year 10-year 20-year 50-year 100-year 1,730 5,890 10,200 15,300 23,100 29,700 NOTE: These results are based on limited data. FCDMC Annual Surface Water Report, Water Year 2021 Page 465 Martinez Creek, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 --14 15 16 1 17 18 19 20 21 22 23 24 25 --26 --27 28 29 --3 30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 3 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 87 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 7 0 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 3 MEAN 0 MAX 87 MIN 0 AC_FT 7 FCDMC Annual Surface Water Report, Water Year 2021 Page 466 McDowell Mountain Road, ID #76007 Site Data LOCATION Located in the southeast part of McDowell Mountain Park DRAINAGE AREA 11.9 mi2 STREAM TYPE Natural Stream JURISDICTION Maricopa County, Arizona WATERSHED Lower Verde SECTION/TOWNSHIP/RANGE S26 T4N R6E LATITUDE N 33° 39' 24.1" | +33.65667 LONGITUDE W 111° 42' 22.8" | -111.70634 STREAMGAGE INSTALLATION DATE 05/18/2004 - WY 2004 AVAILABLE PERIOD OF RECORD (POR) 05/18/2004 - Current LENGTH OF AVAILABLE POR DATA 17.37 Years | 6,345 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.00 feet Gage Height STAFF GAGES 0 CREST STAGE GAGES 1 ZERO GAGE HEIGHT ELEVATION 1,629.69 feet NAVD88 POINT OF ZERO FLOW 0.0 feet Gage Height EXTREME FOR PERIOD OF RECORD 652 cfs | 1.77 feet | 07/23/2007 FCDMC Annual Surface Water Report, Water Year 2021 Page 467 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 468 WY2021 Events Date of Peak 07/23/2021 08/12/2021 08/13/2021 Peak Gage Height (feet) 0.52 0.47 1.24 Peak Discharge (cfs) 58 47 365 Hydrograph of peak WY 2021 flow event, 08/13/2021 Flood Flow Frequency Flood Flow Frequency N=18, HEC-WRC computation (based on 18 years of data) 2-year 5-year 10-year 20-year 50-year 100-year 50 169 309 502 852 1,200 NOTE: These results are based on very limited data. FCDMC Annual Surface Water Report, Water Year 2021 Page 469 McDowell Mountain Road, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 1 13 4 14 15 16 17 18 19 20 21 22 23 1 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 1 0 1 4 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 1 0 58 365 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 1 0 2 8 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 6 MEAN 0 MAX 365 MIN 0 AC_FT 12 FCDMC Annual Surface Water Report, Water Year 2021 Page 470 McMicken Dam at Bell Road, ID #71507 Site Data LOCATION Located on the south side of McMicken Dam at Bell Road DRAINAGE AREA 247 mi2 at outlet gage STREAM TYPE Dam Pool Pass-through JURISDICTION Surprise, Arizona WATERSHED Trilby SECTION/TOWNSHIP/RANGE S03 T3N R2W LATITUDE N 33° 38' 17.6" | +33.63823 LONGITUDE W 112° 27' 41.1" | -112.46141 STREAMGAGE INSTALLATION DATE 03/04/2009 - WY 2009 AVAILABLE PERIOD OF RECORD (POR) 03/04/2009 - Current LENGTH OF AVAILABLE POR DATA 12.58 Years | 4,594 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.35 feet Gage Height STAFF GAGES None CREST STAGE GAGES None ZERO GAGE HEIGHT ELEVATION 1,335.68 feet NAVD88 POINT OF ZERO FLOW 0.00 feet Gage Height EXTREME FOR PERIOD OF RECORD 784 cfs | 5.80 feet GH | 09/08/2014 FCDMC Annual Surface Water Report, Water Year 2021 Page 471 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 472 WY2021 Events Date of Peak Peak Gage Height Peak Discharge (cfs) No runoff recorded Hydrograph of peak WY 2021 flow event There was no runoff recorded in Water Year 2021. Flood Flow Frequency There is not enough data to compute a flood flow frequency for this gage station. FCDMC Annual Surface Water Report, Water Year 2021 Page 473 McMicken Dam at Bell Road, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 0 MEAN 0 MAX 0 MIN 0 AC_FT 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 474 McMicken Dam, ID #71707 Site Data LOCATION Gage is located about 3 miles north of Bell Road DRAINAGE AREA 257.9 mi2 STREAM TYPE Dam of natural drainage JURISDICTION Surprise, Arizona WATERSHED Trilby SECTION/TOWNSHIP/RANGE S24 T4N R2W LATITUDE N 33° 40' 37.2" | +33.67699 LONGITUDE W 112° 25' 24.3" | -112.42342 STREAMGAGE INSTALLATION DATE 03/20/1983 - WY 1983 AVAILABLE PERIOD OF RECORD (POR) 02/18/1988 - Current LENGTH OF AVAILABLE POR DATA 33.62 Years | 12,279 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 1.60 feet Gage Height STAFF GAGES 3 ZERO GAGE HEIGHT ELEVATION 1,336.00 feet NAVD88 POINT OF ZERO FLOW 0.00 feet Gage Height EMERGENCY SPILLWAY CREST ELEVATION 19.25 feet Gage Height TOP OF DAM ELEVATION 25.8 feet Gage Height FCDMC Annual Surface Water Report, Water Year 2021 Page 475 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 476 WY2021 Events Date of Peak Peak Gage Height (feet) Peak Volume (ac-ft) No impoundments Hydrograph of peak 2021 impoundment event There were no impoundments recorded in Water Year 2021. FCDMC Annual Surface Water Report, Water Year 2021 Page 477 Percent Spillway Capacity McMicken Dam, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 0 MEAN 0 MAX 0 MIN 0 AC_FT 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 478 McMicken Dam, volume data Volume, in acre-feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0 MAX 0 MIN 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 479 McMicken Dam, stage data Depth, in feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 2 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 3 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 4 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 5 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 7 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 8 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 9 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 10 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 11 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 12 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 13 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 14 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 15 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 16 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 17 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 18 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 19 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 20 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 21 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 22 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 23 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 24 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 25 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 26 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 27 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 28 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 29 1.6 1.6 1.6 1.6 --1.6 1.6 1.6 1.6 1.6 1.6 1.6 30 1.6 1.6 1.6 1.6 --1.6 1.6 1.6 1.6 1.6 1.6 1.6 31 1.6 --1.6 1.6 --1.6 --1.6 --1.6 1.6 -------------------------------------------------------------------------------MEAN 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 MAX 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 MIN 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 -----------------------------------------------------------------------------WTR YR 2021 MEAN 1.60 MAX 1.60 MIN 1.60 FCDMC Annual Surface Water Report, Water Year 2021 Page 480 McMicken Floodway, ID #71307 Site Data LOCATION Near the intersection of 163rd and Grand Avenues DRAINAGE AREA 305 mi2 STREAM TYPE Engineered Channel JURISDICTION Surprise, Arizona WATERSHED Trilby SECTION/TOWNSHIP/RANGE S18 T4N R1W LATITUDE N 33° 41' 07.2" | +33.68532 LONGITUDE W 112° 24' 31.1" | -112.40864 STREAMGAGE INSTALLATION DATE 05/19/1992 - WY 1992 AVAILABLE PERIOD OF RECORD (POR) 05/19/1992 - Current LENGTH OF AVAILABLE POR DATA 29.37 Years | 10,727 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.15 feet Gage Height STAFF GAGES 2 CREST STAGE GAGES 2 ZERO GAGE HEIGHT ELEVATION 1,325.07 feet NAVD88 POINT OF ZERO FLOW 0.0 feet Gage Height EXTREME FOR PERIOD OF RECORD 1,110 cfs | 4.98 feet | 09/08/2014 FCDMC Annual Surface Water Report, Water Year 2021 Page 481 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 482 WY2021 Events Date of Peak Peak Gage Height Peak Discharge (cfs) 07/25/2021 0.97 9 Hydrograph of peak WY 2021 flow event, 07/25/2021 Flood Flow Frequency Flood Flow Frequency N=30, HEC-WRC computation (based on 30 years of data) 2-year 5-year 10-year 20-year 50-year 100-year 42 139 249 391 633 859 NOTE: These results are based on very limited data. FCDMC Annual Surface Water Report, Water Year 2021 Page 483 McMicken Floodway, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 3 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 3 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 9 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 6 0 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 3 MEAN 0 MAX 9 MIN 0 AC_FT 6 FCDMC Annual Surface Water Report, Water Year 2021 Page 484 Mineral Canyon Basin, ID #68807 Site Data LOCATION In South Mountain Park near Central Avenue and Mineral Road DRAINAGE AREA 3.46 mi2 STREAM TYPE Flood control basin on natural stream JURISDICTION Phoenix, Arizona WATERSHED South Mountain SECTION/TOWNSHIP/RANGE S08 T1S R3E LATITUDE N 33° 21' 20.9" | +33.35580 LONGITUDE W 112° 04' 13.8" | -112.07051 STREAMGAGE INSTALLATION DATE 09/10/2015 - WY 2015 AVAILABLE PERIOD OF RECORD (POR) 09/10/2015 - Current LENGTH OF AVAILABLE POR RECORD 6.06 Years | 2,213 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 2.00 feet Gage Height STAFF GAGES 0 ZERO GAGE HEIGHT ELEVATION 1,294.00 feet NAVD88 POINT OF ZERO FLOW 0.00 feet Gage Height SPILLWAY CREST ELEVATION No spillway TOP OF BASIN ELEVATION 28.5 feet Gage Height FCDMC Annual Surface Water Report, Water Year 2021 Page 485 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 486 WY2021 Events Date of Peak Peak Gage Height (feet) Peak Volume (ac-ft) Percent Spillway Capacity 07/14/2021 2.44 5.8 0.0 Hydrograph of peak 2021 impoundment event, 07/14/2021 FCDMC Annual Surface Water Report, Water Year 2021 Page 487 Mineral Canyon Basin, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 --19 20 21 22 23 24 25 26 27 28 29 30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 0 MEAN 0 MAX 0 MIN 0 AC_FT 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 488 Mineral Canyon Basin, volume data Volume, in acre-feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 2 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 6 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0 MAX 6 MIN 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 489 Mineral Canyon Basin, stage data Depth, in feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 3 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 4 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 5 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 6 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 7 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 8 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 9 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 10 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 11 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 12 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 13 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 14 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.1 2.0 2.0 15 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 16 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 17 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 18 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 19 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 20 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 21 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 22 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 23 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 24 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 25 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 26 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 27 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 28 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 29 2.0 2.0 2.0 2.0 --2.0 2.0 2.0 2.0 2.0 2.0 2.0 30 2.0 2.0 2.0 2.0 --2.0 2.0 2.0 2.0 2.0 2.0 2.0 31 2.0 --2.0 2.0 --2.0 --2.0 --2.0 2.0 -------------------------------------------------------------------------------MEAN 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 MAX 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.4 2.0 2.0 MIN 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 2.00 MAX 2.44 MIN 2.00 FCDMC Annual Surface Water Report, Water Year 2021 Page 490 New River Fire, ID #62707 Site Data LOCATION North of Table Mesa Road about 4 miles east of I-17 DRAINAGE AREA 62 mi2 STREAM TYPE Natural Stream JURISDICTION Maricopa County, Arizona WATERSHED Upper New River SECTION/TOWNSHIP/RANGE S04 T7N R3E LATITUDE N 33° 58' 33.1" | +33.97585 LONGITUDE W 112° 03' 38.3" | -112.06063 STREAMGAGE INSTALLATION DATE 07/18/2005 - WY 2005 AVAILABLE PERIOD OF RECORD (POR) 07/20/2005 - Current LENGTH OF AVAILABLE POR DATA 16.20 Years | 5,917 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 2.00 feet Gage Height STAFF GAGES 0 CREST STAGE GAGES 1 ZERO GAGE HEIGHT ELEVATION 2,469.10 feet NAVD88 POINT OF ZERO FLOW -1.0 feet Gage Height EXTREME FOR PERIOD OF RECORD 32,584 cfs | 11.0 feet | 08/19/2014 FCDMC Annual Surface Water Report, Water Year 2021 Page 491 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 492 WY2021 Events Date of Peak 07/23/2021 07/29/2021 08/18/2021 Peak Gage Height (feet) 7.88 1.55 2.93 Hydrograph of peak WY 2021 flow event, 07/23/2021 Flood Flow Frequency Flood Flow Frequency FEMA Flood Insurance Study (at USGS gage, 3 miles downstream) 100-year 34,500 FCDMC Annual Surface Water Report, Water Year 2021 Page 493 Peak Discharge (cfs) 15,962 758 2,801 New River Fire, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 --6 --7 8 9 10 11 12 13 14 15 16 17 18 226 19 20 21 22 23 --815 24 --25 --26 --27 --28 --29 ----34 30 ----31 -------------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 849 226 0 MEAN 0 0 0 0 0 0 0 0 0 27 7 0 MAX 0 0 0 0 0 0 0 0 0 15962 2801 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 1684 448 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 1075 MEAN 3 MAX 15962 MIN 0 AC_FT 2132 FCDMC Annual Surface Water Report, Water Year 2021 Page 494 New River at SR303L, ID #62213 Site Data LOCATION About 2 miles east of Lake Pleasant Parkway on Loop 303 DRAINAGE AREA 122.2 mi2 STREAM TYPE Natural Stream JURISDICTION Peoria, Arizona WATERSHED Upper New River SECTION/TOWNSHIP/RANGE S14 T5N R1E LATITUDE N 33° 38' 16.6" | +33.63975 LONGITUDE W 112° 14' 22.5" | -112.2396 STREAMGAGE INSTALLATION DATE 12/12/2019 - WY 2020 AVAILABLE PERIOD OF RECORD (POR) 12/12/2019 - Current LENGTH OF AVAILABLE POR DATA 1.80 Years | 659 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 2.00 feet Gage Height STAFF GAGES 0 CREST STAGE GAGES 1 ZERO GAGE HEIGHT ELEVATION 1,490.00 feet NAVD88 POINT OF ZERO FLOW 0.0 feet Gage Height EXTREME FOR PERIOD OF RECORD 3,107 cfs | 4.81 feet | 03/13/2020 FCDMC Annual Surface Water Report, Water Year 2021 Page 495 Watershed Map Cr n ee tto k od C re ek Li t t aw Li ttl ee o ny eM Ca r th No r ee W Y Yavapai avapaiCounty County ag ay C h r eM ek k C re re e as nC gi ld e r le C D ry k Se ve n b ug ek od C r ee k Co Ci ty Rod g er C re e k W W il ee k h Cr as e W as Sk h un k W an ach Ca ve Cr Ap as h l W a Can eir sley W a rd Sp Wa gs rin a sh W R Gra pe v i n FCDMC Annual Surface Water Report, Water Year 2021 Page 496 ee k Sp r in g k Blue W ash eW a G al l o w ay W De ad m A gu a F r i a Be ek a s r Ne w Ri Ri ve r lo w as h ve n e n tto C re sh ow Mo r ga od wo sh n wo or k C re tt o ys F a sh um Co at t sW H M Camp Cre e k k L im eC ek Bou Tu ee r ee se C Hor t tl e re ek Cr ek qu Li eC d ek r ee s tl e te r Cre Bit oo Cre hC Ca ee k en c Cr w re to n Co t C ow C k Re d ek Fr or n Cre le S eek k h Bu ck h ee k Cr Lim As Cr re e k e Co Sl a t wo h WY2021 Events Date of Peak Peak Gage Height (feet) Peak Discharge (cfs) 07/23/2021 5.46 5,483 NOTE: Data for the event was recovered from the crest gage. The RADAR gage failed. Hydrograph of peak WY 2021 flow event, Gage failed to operate for all events in WY21. Flood Flow Frequency Flood Flow Frequency Source: USGS Streamstats 2-year 5-year 10-year 25-year 50-year 100-year 1,230 3,740 6,560 10,700 15,800 22,400 FCDMC Annual Surface Water Report, Water Year 2021 Page 497 New River at SR303L, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 --2 3 4 5 6 7 --8 --9 --10 --11 --12 --13 ----14 ----15 --16 --17 --18 --19 20 21 22 23 24 25 26 ----27 28 --29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 0 MEAN 0 MAX 0 MIN 0 AC_FT 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 498 New River Dam Pool, ID #62017 Site Data LOCATION Near 75th Avenue north of Jomax Road DRAINAGE AREA 171 mi2 STREAM TYPE Dam of natural drainage JURISDICTION Peoria, Arizona WATERSHED Upper New River SECTION/TOWNSHIP/RANGE S35 T5N R1E LATITUDE N 33° 44' 09.1" | +33.73585 LONGITUDE W 112° 13' 31.8" | -112.22550 STREAMGAGE INSTALLATION DATE 04/15/1986 - WY 1986 AVAILABLE PERIOD OF RECORD (POR) 08/30/1988 - Current LENGTH OF AVAILABLE POR DATA 33.09 Years | 12,085 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 2.85 feet Gage Height STAFF GAGES 21 ZERO GAGE HEIGHT ELEVATION 1,391.50 feet NAVD88 POINT OF ZERO FLOW 0.00 feet Gage Height STANDARD PROJECT FLOOD 49,300 acre-feet / 45,000 cfs inflow / 2,665 cfs outflow PROBABLE MAXIMUM FLOOD 105,000 acre-feet / 144,000 cfs inflow / 30,000 cfs outflow SPILLWAY ELEVATION 67.0 feet Gage Height TOP OF DAM ELEVATION 98.0 feet Gage Height FCDMC Annual Surface Water Report, Water Year 2021 Page 499 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 500 WY2021 Events Date of Peak 07/24/2021 08/12/2021 Peak Gage Height (feet) 6.63 4.30 Peak Volume (ac-ft) 260.3 119.0 Hydrograph of peak 2021 impoundment event, 07/24/2021 FCDMC Annual Surface Water Report, Water Year 2021 Page 501 Percent Spillway Capacity 0.6 0.2 New River Dam Pool, volume data Volume, in acre-feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 46 13 60 14 42 15 16 17 18 19 20 21 22 23 17 24 197 25 59 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------MEAN 0 0 0 0 0 0 0 0 0 9 5 0 MAX 0 0 0 0 0 0 0 0 0 260 119 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 1 MAX 260 MIN 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 502 New River Dam Pool, stage data Depth, in feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 3 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 4 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 5 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 6 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 7 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 8 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 10 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 11 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 12 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 3.3 2.9 13 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 3.0 2.9 14 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 3.2 2.9 15 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 16 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 17 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 18 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 19 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 20 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 21 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 22 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 23 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 3.1 2.9 2.9 24 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 5.6 2.9 2.9 25 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 3.2 2.9 2.9 26 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 27 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 28 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 29 2.9 2.9 2.9 2.9 --2.9 2.9 2.9 2.9 2.9 2.9 2.9 30 2.9 2.9 2.9 2.9 --2.9 2.9 2.9 2.9 2.9 2.9 2.9 31 2.9 --2.9 2.9 --2.9 --2.9 --2.9 2.9 -------------------------------------------------------------------------------MEAN 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 3.0 2.9 2.9 MAX 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 6.6 4.3 2.9 MIN 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 -----------------------------------------------------------------------------WTR YR 2021 MEAN 2.89 MAX 6.63 MIN 2.88 FCDMC Annual Surface Water Report, Water Year 2021 Page 503 New River Dam Outlet, ID #62007 Site Data LOCATION Near 75th Avenue north of Jomax Road DRAINAGE AREA 171 mi2 STREAM TYPE Engineered Channel JURISDICTION Peoria, Arizona WATERSHED Lower New River SECTION/TOWNSHIP/RANGE S35 T5N R1E LATITUDE N 33° 44' 09.1" | +33.73585 LONGITUDE W 112° 13' 31.8" | -112.22550 STREAMGAGE INSTALLATION DATE 04/15/1986 - WY 1986 AVAILABLE PERIOD OF RECORD (POR) 08/30/1988 - Current LENGTH OF AVAILABLE POR DATA 33.09 Years | 12,085 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.68 feet Gage Height STAFF GAGES 1 CREST STAGE GAGES 0 ZERO GAGE HEIGHT ELEVATION 1,378.15 feet NAVD88 POINT OF ZERO FLOW 0.2 feet Gage Height EXTREME FOR PERIOD OF RECORD* 1,570 cfs | 9.36 feet | 02/15/1995 *Extreme for period of record did not occur on the date of maximum pool stage (01/08/1993) because the gage may have failed and no data are available at this gage on that date. FCDMC Annual Surface Water Report, Water Year 2021 Page 504 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 505 WY2021 Events Date of Peak 07/24/2021 08/12/2021 08/14/2021 Peak Gage Height 3.54 3.75 3.50 Peak Discharge (cfs) 17 26 16 Hydrograph of peak WY 2021 flow event, 07/24/2021 Flood Flow Frequency Flows past this gage are regulated by New River Dam directly upstream. Flood Flow Frequency is therefore not valid. FCDMC Annual Surface Water Report, Water Year 2021 Page 506 New River Dam Outlet, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 8 13 14 6 15 16 17 18 19 20 21 22 23 1 24 8 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 9 14 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 17 26 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 18 29 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 23 MEAN 0 MAX 26 MIN 0 AC_FT 46 FCDMC Annual Surface Water Report, Water Year 2021 Page 507 New River at Bell Road, ID #61707 Site Data LOCATION On Bell Road west of Loop 101 DRAINAGE AREA 185 mi2 STREAM TYPE Channelized Natural Stream JURISDICTION Peoria, Arizona WATERSHED Lower New River SECTION/TOWNSHIP/RANGE S03 T3N R1E LATITUDE N 33° 38' 16.6" | +33.63795 LONGITUDE W 112° 14' 22.5" | -112.23959 STREAMGAGE INSTALLATION DATE 04/04/1990 - WY 1990 AVAILABLE PERIOD OF RECORD (POR) 04/04/1990 - Current LENGTH OF AVAILABLE POR DATA 31.49 Years | 11,503 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.30 feet Gage Height STAFF GAGES 2 CREST STAGE GAGES 1 ZERO GAGE HEIGHT ELEVATION 1,192.11 feet NAVD88 POINT OF ZERO FLOW -0.1 feet Gage Height EXTREME FOR PERIOD OF RECORD 4,005 cfs | 5.77 feet | 09/03/1990 EXTREME OUTSIDE PERIOD OF RECORD 14,600 cfs | 12/19/1967 FCDMC Annual Surface Water Report, Water Year 2021 Page 508 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 509 WY2021 Events Date of Peak 07/21/2021 07/25/2021 07/25/2021 08/14/2021 Peak Gage Height (feet) 0.42 0.90 0.50 1.10 Peak Discharge (cfs) 137 408 172 574 Hydrograph of peak WY 2021 flow event, 08/14/2021 Flood Flow Frequency Flood Flow Frequency N=32, HEC-WRC computation (based on 32 years of data) 2-year 5-year 10-year 20-year 50-year 100-year 181 1,170 2,610 4,630 8,130 11,300 NOTE(1): These results are based on limited data. NOTE(2): New River Dam upstream limits the peak discharge from the upper portion of the watershed. FCDMC Annual Surface Water Report, Water Year 2021 Page 510 New River at Bell Road, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 40 15 16 17 18 19 20 21 12 22 23 24 11 25 59 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 81 40 0 MEAN 0 0 0 0 0 0 0 0 0 3 1 0 MAX 0 0 0 0 0 0 0 0 0 408 574 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 162 79 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 121 MEAN 0 MAX 574 MIN 0 AC_FT 240 FCDMC Annual Surface Water Report, Water Year 2021 Page 511 New River at Glendale Avenue, ID #61507 (transducer), #61513 (radar) Site Data LOCATION West of 99th Avenue on Glendale Avenue DRAINAGE AREA 600 mi2 STREAM TYPE Channelized Natural Stream JURISDICTION Glendale, Arizona WATERSHED Lower New River SECTION/TOWNSHIP/RANGE S05 T2N R1E LATITUDE N 33° 32' 11.8" | +33.53661 LONGITUDE W 112° 16' 53.3" | -112.28146 STREAMGAGE INSTALLATION DATE 03/21/1990 - WY 1990 AVAILABLE PERIOD OF RECORD (POR) 03/21/1990 - Current LENGTH OF AVAILABLE POR DATA 31.53 Years | 11,517 Days DATA GAPS IN POR (61507) 08/23/2006 - 03/07/2007 DATA GAPS IN POR (61513) 04/16/2021 – 09/20/2021 STAGE GAGE TYPES Transducer / RADAR TRANSDUCER GAGE ELEVATION 2.50 feet Gage Height RADAR GAGE ELEVATION 20.75 feet Gage Height STAFF GAGES 1 CREST STAGE GAGES 1 ZERO GAGE HEIGHT ELEVATION 1,045.84 feet NAVD88 POINT OF ZERO FLOW 0.0 feet Gage Height EXTREME FOR PERIOD OF RECORD 10,266 cfs | 2.90 feet | 02/10/1993 EXTREME OUTSIDE PERIOD OF RECORD 38,000 cfs | 08/1943 FCDMC Annual Surface Water Report, Water Year 2021 Page 512 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 513 WY2021 Events Date of Peak 12/10/2020 01/25/2021 08/14/2021 Peak Gage Height (feet) 2.46 1.89 4.85 Peak Discharge (cfs) 271 159 3,845 Hydrograph of peak WY 2021 flow event, No hydrographs available for peak events due to gage issues. Flood Flow Frequency Flood Flow Frequency N=31, HEC-WRC computation (based on 31 years of data) 2-year 5-year 10-year 20-year 50-year 100-year 1,230 2,880 4,550 6,700 10,300 14,100 NOTE(1): These results are based on limited data. NOTE(2): New River Dam upstream limits the peak discharge from the upper portion of the watershed. The analysis only includes runoff since the New River Dam’s construction. FCDMC Annual Surface Water Report, Water Year 2021 Page 514 New River at Glendale Avenue (#61513), runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 24 4 4 31 4 ----------2 21 4 12 34 4 35 ----------3 24 4 24 37 4 33 ----------4 23 4 23 42 4 32 ----------5 23 4 23 38 4 28 ----------6 23 4 27 33 4 29 ----------7 25 4 32 34 4 27 ----------8 16 4 29 32 4 31 ----------9 15 4 29 34 4 29 ----------10 25 4 87 34 4 30 ----------11 25 4 51 31 4 33 ----------12 19 4 24 31 4 38 ----------13 17 4 20 30 4 37 ----------14 20 4 22 27 4 35 ----------15 20 4 23 31 4 33 ----------16 19 4 23 31 4 ------------17 22 4 22 35 4 ------------18 19 4 22 35 4 ------------19 21 4 23 38 4 ------------20 18 4 23 31 4 ------------21 18 4 25 29 4 ----------13 22 19 4 28 31 4 ----------10 23 22 4 30 31 4 ----------12 24 25 4 26 47 4 ----------15 25 22 4 29 74 4 ----------15 26 24 4 28 72 4 ----------18 27 23 4 28 35 ----------20 28 26 4 30 23 ----------14 29 22 4 33 27 ------------12 30 4 4 44 4 ------------13 31 4 --53 4 -------------------------------------------------------------------------------------------TOTAL ------------------------MEAN 20 4 29 34 4 0 32 --------14 MAX ------------------------MIN ------------------------AC_FT -----------------------------------------------------------------------------------------------------WTR YR 2021 TOTAL --- MEAN 24 MAX --- MIN --- AC_FT --NOTE: Gage was removed for construction April 16, 2021 – September 20, 2021. NOTE: There is almost always a base flow at this location due to irrigation tail water. FCDMC Annual Surface Water Report, Water Year 2021 Page 515 New River at Glendale Avenue (#61507), runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 0 MEAN 0 MAX 0 MIN 0 AC_FT 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 516 North Heights Dam, ID #78207 Site Data LOCATION Upstream from Golden Eagle Park Dam, to the north and west DRAINAGE AREA 2.13 mi2 STREAM TYPE Dam of natural drainage JURISDICTION Fountain Hills, Arizona WATERSHED Lower Verde SECTION/TOWNSHIP/RANGE S09 T3N R6E LATITUDE N 33° 37' 16.7" | +33.62131 LONGITUDE W 111° 44' 55.3" | -111.74868 STREAMGAGE INSTALLATION DATE 10/11/1996 - WY 1997 AVAILABLE PERIOD OF RECORD (POR) 10/11/1996 - Current LENGTH OF AVAILABLE POR DATA 24.97 Years | 9,121 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.25 feet Gage Height STAFF GAGES 0 ZERO GAGE HEIGHT ELEVATION 1,781.26 feet NAVD88 POINT OF ZERO FLOW 0.00 feet Gage Height SPILLWAY CREST ELEVATION 31.7 feet Gage Height TOP OF DAM ELEVATION 39.6 feet Gage Height FCDMC Annual Surface Water Report, Water Year 2021 Page 517 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 518 WY2021 Events Date of Peak 07/03/2021 07/22/2021 07/23/2021 08/11/2021 08/11/2021 08/13/2021 08/16/2021 08/18/2021 Peak Gage Height (feet) 1.12 1.52 8.26 10.51 9.28 18.47 2.35 2.34 Peak Volume (ac-ft) 0.0 0.1 3.0 5.7 3.9 30.3 0.1 0.1 Hydrograph of peak 2021 impoundment event, 08/13/2021 FCDMC Annual Surface Water Report, Water Year 2021 Page 519 Percent Spillway Capacity 0.0 0.1 2.3 4.2 2.9 22.0 0.1 0.1 North Heights Dam, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 1 4 5 6 7 8 9 10 11 11 12 13 18 14 1 15 16 1 17 18 1 19 20 21 22 23 5 24 25 26 27 28 1 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 1 0 0 0 0 1 0 0 0 6 32 0 MEAN 0 0 0 0 0 0 0 0 0 0 1 0 MAX 4 0 0 0 0 3 0 0 0 145 250 10 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 2 0 0 0 0 1 0 1 0 11 64 1 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 40 MEAN 0 MAX 250 MIN 0 AC_FT 80 FCDMC Annual Surface Water Report, Water Year 2021 Page 520 North Heights Dam, volume data Volume, in acre feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 1 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 3 30 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0 MAX 30 MIN 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 521 North Heights Dam, stage data Depth, in feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.3 2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 3 0.2 0.2 0.2 0.2 0.2 0.3 0.2 0.2 0.2 0.3 0.2 0.2 4 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.3 0.2 0.2 0.2 0.2 5 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 6 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 7 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 8 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 9 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 10 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 11 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.8 0.2 12 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 13 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 1.5 0.2 14 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.3 0.2 15 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 16 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.3 0.2 17 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.3 0.2 18 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.3 0.2 19 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 20 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 21 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 22 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.3 0.2 0.3 0.2 0.2 23 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.3 0.2 0.5 0.2 0.2 24 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 25 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 26 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 27 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 28 0.3 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 29 0.2 0.2 0.2 0.2 --0.2 0.2 0.2 0.2 0.2 0.2 0.2 30 0.2 0.2 0.2 0.2 --0.2 0.2 0.2 0.2 0.2 0.2 0.2 31 0.2 --0.2 0.2 --0.2 --0.2 --0.2 0.2 -------------------------------------------------------------------------------MEAN 0.3 0.2 0.2 0.2 0.2 0.3 0.2 0.3 0.2 0.3 0.3 0.3 MAX 0.3 0.2 0.2 0.2 0.2 0.3 0.2 0.3 0.2 8.3 18.5 0.8 MIN 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0.26 MAX 18.47 MIN 0.25 FCDMC Annual Surface Water Report, Water Year 2021 Page 522 Old Crosscut Canal near McDowell Road, ID #4707 Site Data LOCATION Near McDowell Road and SR143 DRAINAGE AREA Undetermined STREAM TYPE Engineered Channel JURISDICTION Phoenix, Arizona WATERSHED Lower ACDC SECTION/TOWNSHIP/RANGE S06 T1N R4E LATITUDE N 33° 27' 41.4" | +33.46149 LONGITUDE W 111° 58' 56.1" | -111.98224 STREAMGAGE INSTALLATION DATE 07/27/1994 - WY 1994 AVAILABLE PERIOD OF RECORD (POR) 07/27/1994 - Current LENGTH OF AVAILABLE POR DATA DATA 27.18 Years | 9,928 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.20 feet Gage Height ZERO GAGE HEIGHT ELEVATION 1,167.01 feet NAVD88 POINT OF ZERO FLOW -0.28 feet Gage Height EXTREME FOR PERIOD OF RECORD 647 cfs | 3.15 feet | 08/03/2017 FCDMC Annual Surface Water Report, Water Year 2021 Page 523 Location Map (watershed not available) FCDMC Annual Surface Water Report, Water Year 2021 Page 524 WY2021 Events Date of Peak 07/23/2021 08/11/2021 Peak Gage Height 1.39 1.52 Peak Discharge (cfs) 127 148 Hydrograph of peak WY 2021 flow event, 08/11/2021 Flood Flow Frequency Runoff at this gage is not always in response to rainfall event, and therefore is not appropriate for flood frequency computation. FCDMC Annual Surface Water Report, Water Year 2021 Page 525 Old Crosscut Canal near McDowell Road, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 4 1 3 4 2 4 2 5 6 6 4 7 7 2 8 4 9 6 10 4 11 6 17 12 8 8 13 3 1 14 3 6 15 16 1 1 17 16 1 18 19 20 21 2 22 5 23 19 24 3 25 3 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 57 0 17 37 38 1 MEAN 0 0 0 0 0 0 2 0 1 1 1 0 MAX 0 0 0 0 0 0 9 0 44 127 148 13 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 113 0 33 74 75 1 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 149 MEAN 0 MAX 148 MIN 0 AC_FT 295 NOTE: There is often a persistent base flow at this site due to SRP releases upstream, and ground water flow into the canal upstream. FCDMC Annual Surface Water Report, Water Year 2021 Page 526 Paradise Lane at 33rd Drive Basin, ID #12407 Site Data LOCATION Located along Paradise Lane at the west end of Conocido Park DRAINAGE AREA Undetermined STREAM TYPE Flood control basin JURISDICTION Phoenix, Arizona WATERSHED Upper ACDC SECTION/TOWNSHIP/RANGE S02 T3N R2E LATITUDE N 33° 37' 56.7" | +33.63240 LONGITUDE W 112° 07' 41.2" | -112.12812 STREAMGAGE INSTALLATION DATE 10/08/2015 - WY 2016 AVAILABLE PERIOD OF RECORD (POR) 10/08/2015 - Current LENGTH OF AVAILABLE POR DATA 5.98 Years | 2,185 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.23 feet Gage Height STAFF GAGES 0 ZERO GAGE HEIGHT ELEVATION 1,308.23 feet NAVD88 POINT OF ZERO FLOW 0.00 feet Gage Height SPILLWAY CREST ELEVATION 4.75 feet Gage Height TOP OF BASIN ELEVATION 4.9 feet Gage Height FCDMC Annual Surface Water Report, Water Year 2021 Page 527 Location Map FCDMC Annual Surface Water Report, Water Year 2021 Page 528 WY2021 Events Date of Peak 12/10/2020 01/25/2021 01/29/2021 07/02/2021 07/03/2021 07/14/2021 07/22/2021 07/23/2021 08/14/2021 08/17/2021 08/18/2021 09/26/2021 Peak Gage Height (feet) 1.52 1.65 0.82 1.77 1.40 1.50 2.82 2.12 3.54 2.99 2.54 0.92 Peak Volume (ac-ft) 12.0 13.4 5.8 14.7 10.9 11.8 27.8 18.6 39.9 30.3 23.8 6.6 Hydrograph of peak 2021 impoundment event, 08/14/2021 FCDMC Annual Surface Water Report, Water Year 2021 Page 529 Percent Spillway Capacity 14.3 15.9 6.8 17.4 12.9 14.0 32.9 22.0 47.2 35.8 28.2 7.7 Paradise Lane at 33rd Drive Basin, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 1 2 4 3 3 4 1 5 6 7 8 9 10 5 11 12 13 3 14 3 19 15 1 16 17 11 18 8 19 1 20 21 22 2 23 17 24 1 25 7 26 6 3 27 28 29 2 --30 --31 --------1 -------------------------------------------------------------------------------TOTAL 1 0 5 15 0 0 0 0 0 33 44 4 MEAN 0 0 0 0 0 0 0 0 0 1 1 0 MAX 1 0 17 17 0 0 1 0 0 33 56 13 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 1 0 9 29 0 0 0 0 0 65 87 9 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 101 MEAN 0 MAX 56 MIN 0 AC_FT 200 FCDMC Annual Surface Water Report, Water Year 2021 Page 530 Paradise Lane at 33rd Drive Basin, volume data Volume, in acre-feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 3 2 4 5 6 7 8 9 10 3 11 12 13 2 14 1 16 15 16 17 8 18 6 19 20 21 22 2 23 14 24 25 5 26 3 1 27 28 29 1 --30 --31 ---------------------------------------------------------------------------------------MEAN 0 0 0 0 0 0 0 0 0 1 1 0 MAX 0 0 12 13 0 0 0 0 0 28 40 7 MIN 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0 MAX 40 MIN 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 531 Paradise Lane at 33rd Drive, stage data Depth, in feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.3 0.2 0.2 2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.5 0.2 0.2 3 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.4 0.2 0.2 4 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.3 0.2 0.2 5 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 6 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 7 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 8 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 9 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 10 0.2 0.2 0.5 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 11 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 12 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 13 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.4 0.2 14 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.4 1.8 0.2 15 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.3 0.2 16 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 17 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 1.0 0.2 18 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.9 0.2 19 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.3 0.2 20 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 21 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 22 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.4 0.2 0.2 23 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 1.6 0.2 0.2 24 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.3 0.2 0.2 25 0.2 0.2 0.2 0.7 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 26 0.2 0.2 0.2 0.6 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.4 27 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 28 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 29 0.2 0.2 0.2 0.3 --0.2 0.2 0.2 0.2 0.2 0.2 0.2 30 0.2 0.2 0.2 0.2 --0.2 0.2 0.2 0.2 0.2 0.2 0.2 31 0.2 --0.2 0.2 --0.2 --0.2 --0.3 0.2 -------------------------------------------------------------------------------MEAN 0.2 0.2 0.2 0.3 0.2 0.2 0.2 0.2 0.2 0.3 0.3 0.2 MAX 0.2 0.2 1.5 1.6 0.2 0.2 0.3 0.2 0.2 2.8 3.5 0.9 MIN 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0.25 MAX 3.54 MIN 0.23 FCDMC Annual Surface Water Report, Water Year 2021 Page 532 Paradise Lane at 47th Avenue Basin, ID #13707 Site Data LOCATION Located on the northeast corner of Paradise Ln and 47th Ave DRAINAGE AREA Undetermined STREAM TYPE Flood control basin JURISDICTION Phoenix, Arizona WATERSHED Upper ACDC SECTION/TOWNSHIP/RANGE S04 T3N R2E LATITUDE N 33° 37' 56.8" | +33.63244 LONGITUDE W 112° 09' 31.4" | -112.15873 STREAMGAGE INSTALLATION DATE 10/08/2015 - WY 2016 AVAILABLE PERIOD OF RECORD (POR) 10/08/2015 - Current LENGTH OF AVAILABLE POR DATA 5.98 Years | 2,185 Days DATA GAPS IN POR 03/21/2017 – 02/21/2018 (337 Days) STAGE GAGE TYPE Pressure Transducer STAGE GAGE ELEVATION 0.15 feet Gage Height STAFF GAGES 0 ZERO GAGE HEIGHT ELEVATION 1,267.39 feet NAVD88 POINT OF ZERO FLOW 0.00 feet Gage Height SPILLWAY CREST ELEVATION No spillway TOP OF BASIN ELEVATION 4.5 feet Gage Height FCDMC Annual Surface Water Report, Water Year 2021 Page 533 Location Map FCDMC Annual Surface Water Report, Water Year 2021 Page 534 WY2021 Events Date of Peak 12/10/2020 07/01/2021 07/14/2021 07/22/2021 08/13/2021 08/18/2021 Peak Gage Height (feet) 0.39 0.25 0.35 0.62 3.26 0.74 Peak Volume (ac-ft) 3.7 2.6 3.4 5.7 29.2 6.8 Hydrograph of peak 2021 impoundment event, 08/13/2021 FCDMC Annual Surface Water Report, Water Year 2021 Page 535 Percent Spillway Capacity 8.0 4.1 6.8 13.8 72.5 16.4 Paradise Lane at 47th Avenue Basin, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 0 MEAN 0 MAX 0 MIN 0 AC_FT 0 NOTE: There is currently no discharge rating at this location. FCDMC Annual Surface Water Report, Water Year 2021 Page 536 Paradise Lane at 47th Avenue Basin, volume data Volume, in acre-feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 1 11 12 13 1 14 9 15 16 17 18 19 20 21 22 23 1 24 25 26 27 28 29 --30 --31 --------1 -------------------------------------------------------------------------------MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 2 0 4 0 0 0 0 0 0 6 30 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0 MAX 30 MIN 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 537 Paradise Lane at 47th Avenue Basin, stage data Depth, in feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 2 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 3 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 4 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 5 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 6 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 7 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 8 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 9 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 10 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 11 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 12 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 13 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.2 0.1 14 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.9 0.1 15 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 16 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 17 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 18 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 19 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 20 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 21 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 22 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 23 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 24 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 25 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 26 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 27 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 28 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 29 0.1 0.1 0.1 0.1 --0.1 0.1 0.1 0.1 0.1 0.1 0.1 30 0.1 0.1 0.1 0.1 --0.1 0.1 0.1 0.1 0.1 0.1 0.1 31 0.1 --0.1 0.1 --0.1 --0.1 --0.2 0.1 -------------------------------------------------------------------------------MEAN 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 MAX 0.1 0.1 0.4 0.1 0.1 0.1 0.1 0.1 0.1 0.7 3.3 0.1 MIN 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0.10 MAX 3.26 MIN 0.10 FCDMC Annual Surface Water Report, Water Year 2021 Page 538 Pecos Sediment Basin, ID #70007 Site Data LOCATION In Pecos Park near 48th Street and Loop 202 DRAINAGE AREA 5.0 mi2 STREAM TYPE Engineered Drainage System JURISDICTION Phoenix, Arizona WATERSHED South Mountain SECTION/TOWNSHIP/RANGE S32 T1S R4E LATITUDE N 33° 17' 38.3" | +33.29396 LONGITUDE W 111° 58' 39.0" | -111.97751 STREAMGAGE INSTALLATION DATE 01/06/2009 - WY 2009 AVAILABLE PERIOD OF RECORD (POR) 01/06/2009 - Current LENGTH OF AVAILABLE POR DATA 12.73 Years | 4,651 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 1.48 feet Gage Height STAFF GAGES 0 ZERO GAGE HEIGHT ELEVATION 1,141.84 feet NAVD88 POINT OF ZERO FLOW (GATED OUTLET) 4.71 feet Gage Height SEDIMENT BASIN WEIR ELEVATION 18.0 feet Gage Height BASIN SPILLWAY CREST ELEVATION 21.0 feet Gage Height TOP OF DAM ELEVATION 22.0 feet Gage Height FCDMC Annual Surface Water Report, Water Year 2021 Page 539 Location Map FCDMC Annual Surface Water Report, Water Year 2021 Page 540 WY2021 Events Date of Peak 07/23/2021 08/14/2021 Peak Gage Height (feet) 1.51 1.51 Hydrograph of peak 2021 impoundment event, No impoundments recorded in Water Year 2021. FCDMC Annual Surface Water Report, Water Year 2021 Page 541 Peak Volume (ac-ft) 0.2 0.2 Percent Spillway Capacity 0.5 0.5 Pecos Sediment Basin, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 --16 --17 --18 --19 --20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 0 MEAN 0 MAX 0 MIN 0 AC_FT 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 542 Pecos Sediment Basin, volume data Volume, in acre-feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 --16 --17 --18 --19 --20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 1 0 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0 MAX 1 MIN 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 543 Pecos Sediment Basin, stage data Depth, in feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 2 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 3 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 4 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 6 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 7 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 8 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 9 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 10 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 11 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 12 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 13 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 14 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 15 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 --1.5 1.5 16 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 --1.5 1.5 17 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 --1.5 1.5 18 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 --1.5 1.5 19 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 --1.5 1.5 20 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 21 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 22 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 23 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 24 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 25 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 26 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 27 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 28 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 29 1.5 1.5 1.5 1.5 --1.5 1.5 1.5 1.5 1.5 1.5 1.5 30 1.5 1.5 1.5 1.5 --1.5 1.5 1.5 1.5 1.5 1.5 1.5 31 1.5 --1.5 1.5 --1.5 --1.5 --1.5 1.5 -------------------------------------------------------------------------------MEAN 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 MAX 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.6 1.5 1.5 1.5 MIN 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 -----------------------------------------------------------------------------WTR YR 2021 MEAN 1.48 MAX 1.65 MIN 1.48 FCDMC Annual Surface Water Report, Water Year 2021 Page 544 Pecos Basin Pool, ID #70017 Site Data LOCATION In Pecos Park near 48th Street and Loop 202 DRAINAGE AREA 5.0 mi2 STREAM TYPE Engineered Drainage System JURISDICTION Phoenix, Arizona WATERSHED South Mountain SECTION/TOWNSHIP/RANGE S32 T1S R4E LATITUDE N 33° 17' 38.3" | +33.29369 LONGITUDE W 111° 58' 39.0" | -111.97751 STREAMGAGE INSTALLATION DATE 01/06/2009 - WY 2009 AVAILABLE PERIOD OF RECORD (POR) 01/06/2009 - Current LENGTH OF AVAILABLE POR DATA 12.73 Years | 4,651 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 6.05 feet Gage Height STAFF GAGES 0 CREST STAGE GAGES 0 ZERO GAGE HEIGHT ELEVATION 1,141.84 feet NAVD88 PZF (GATED OUTLET, ABOUT 1600 FT DS) 1.75 feet Gage Height SPILLWAY CREST ELEVATION 21.0 feet Gage Height TOP OF DAM ELEVATION 22.0 feet Gage Height FCDMC Annual Surface Water Report, Water Year 2021 Page 545 Location Map FCDMC Annual Surface Water Report, Water Year 2021 Page 546 WY2021 Events Date of Peak Peak Gage Height (feet) None Hydrograph of peak 2021 impoundment event, No impoundments recorded in Water Year 2021. FCDMC Annual Surface Water Report, Water Year 2021 Page 547 Peak Volume (ac-ft) Percent Spillway Capacity Pecos Basin Pool, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 --2 --3 --4 --5 6 7 8 9 10 11 12 13 14 15 --16 --17 --18 --19 --20 21 22 --23 24 --25 --26 --27 28 --29 ----30 ----31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 0 MEAN 0 MAX 0 MIN 0 AC_FT 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 548 Pecos Basin Pool, volume data Volume, in acre-feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 --2 --3 --4 --5 6 7 8 9 10 11 12 13 14 15 --16 --17 --18 --19 --20 21 22 --23 24 --25 --26 --27 28 --29 ----30 ----31 ---------------------------------------------------------------------------------------MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0 MAX 0 MIN 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 549 Pecos Basin Pool, stage data Depth, in feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 --6.0 2 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 --6.0 3 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 --6.0 4 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 --6.0 5 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 7 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 8 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 9 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 10 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 11 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 12 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 13 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 14 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 15 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 --6.0 6.0 16 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 --6.0 6.0 17 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 --6.0 6.0 18 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 --6.0 6.0 19 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 --6.0 6.0 20 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 21 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 22 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 --6.0 6.0 23 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 24 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 --6.0 6.0 25 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 --6.0 6.0 26 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 --6.0 6.0 27 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 28 6.1 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 --6.0 6.0 29 6.0 6.0 6.0 6.0 --6.0 6.0 6.0 6.0 --6.0 6.0 30 6.0 6.0 6.0 6.0 --6.0 6.0 6.0 6.0 --6.0 6.0 31 6.0 --6.0 6.0 --6.0 --6.0 --6.0 6.0 -------------------------------------------------------------------------------MEAN 6.1 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 MAX 6.1 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 MIN 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 6.05 MAX 6.13 MIN 6.05 FCDMC Annual Surface Water Report, Water Year 2021 Page 550 Pecos North Inflow, ID #69307 Site Data LOCATION Located on 48th Street south of Frye Road DRAINAGE AREA Not Determined STREAM TYPE Engineered Channel JURISDICTION Phoenix, Arizona WATERSHED South Mountain SECTION/TOWNSHIP/RANGE S31 T1S R4E LATITUDE N 33° 17' 49.0" | +33.29695 LONGITUDE W 111° 58' 49.8" | -111.98051 STREAMGAGE INSTALLATION DATE 01/21/2009 - WY 2009 AVAILABLE PERIOD OF RECORD (POR) 01/21/2009 - Current LENGTH OF AVAILABLE POR DATA 12.69 Years | 4,636 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.10 feet Gage Height STAFF GAGES None CREST STAGE GAGES None ZERO GAGE HEIGHT ELEVATION 1,173.24 feet NAVD88 POINT OF ZERO FLOW 0.0 feet Gage Height EXTREME FOR PERIOD OF RECORD 277 cfs | 3.12 feet Gage Height | 09/08/2014 FCDMC Annual Surface Water Report, Water Year 2021 Page 551 Location Map (watershed not defined) FCDMC Annual Surface Water Report, Water Year 2021 Page 552 WY2021 Events Date of Peak 07/14/2021 07/23/2021 07/24/2021 07/31/2021 08/10/2021 08/14/2021 08/18/2021 09/01/2021 09/18/2021 Peak Gage Height 0.77 0.67 0.34 0.49 0.79 0.77 0.89 1.09 0.67 Peak Discharge (cfs) 46 39 17 26 47 46 55 75 39 Hydrograph of peak WY 2021 flow event, 09/01/2021 Flood Flow Frequency There is not enough data to compute a flood flow frequency for this gage station. FCDMC Annual Surface Water Report, Water Year 2021 Page 553 Pecos North Inflow, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 3 2 3 4 5 6 7 8 9 10 2 11 12 13 14 2 2 15 16 17 18 3 1 19 20 21 22 1 23 1 1 24 25 26 27 28 29 --30 --31 --------1 -------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 2 0 4 7 4 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 4 0 46 55 75 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 4 0 8 13 8 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 17 MEAN 0 MAX 75 MIN 0 AC_FT 34 FCDMC Annual Surface Water Report, Water Year 2021 Page 554 Pecos East Inflow, ID #69507 Site Data LOCATION Located east of 48th Street on the north side of SR 202L DRAINAGE AREA Not Determined STREAM TYPE Engineered Channel JURISDICTION Phoenix, Arizona WATERSHED South Mountain SECTION/TOWNSHIP/RANGE S32 T1S R4E LATITUDE N 33° 17' 47.9" | +33.29663 LONGITUDE W 111° 58' 41.5" | -111.97820 STREAMGAGE INSTALLATION DATE 01/21/2009 - WY 2009 AVAILABLE PERIOD OF RECORD (POR) 01/21/2009 - Current LENGTH OF AVAILABLE POR DATA 12.69 Years | 4,636 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.73 feet Gage Height STAFF GAGES None CREST STAGE GAGES None ZERO GAGE HEIGHT ELEVATION 1,165.69 feet NAVD88 POINT OF ZERO FLOW 0.0 feet Gage Height EXTREME FOR PERIOD OF RECORD 186 cfs | 1.86 feet gage height | 09/08/2014 FCDMC Annual Surface Water Report, Water Year 2021 Page 555 Location Map FCDMC Annual Surface Water Report, Water Year 2021 Page 556 WY2021 Events Date of Peak Peak Gage Height Peak Discharge (cfs) None Hydrograph of peak WY 2021 flow event, No runoff recorded in Water Year 2020. Flood Flow Frequency There is not enough data to compute a flood flow frequency for this gage station. FCDMC Annual Surface Water Report, Water Year 2021 Page 557 Pecos East Inflow, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 0 MEAN 0 MAX 0 MIN 0 AC_FT 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 558 Pecos West Inflow, ID #69807 Site Data LOCATION Located west of 48th Street and north of SR 202L DRAINAGE AREA Not Determined STREAM TYPE Engineered Channel JURISDICTION Phoenix, Arizona WATERSHED South Mountain SECTION/TOWNSHIP/RANGE S31 T1S R4E LATITUDE N 33° 17' 39.3" | +33.29425 LONGITUDE W 111° 58' 58.7" | -111.98298 STREAMGAGE INSTALLATION DATE 01/21/2009 - WY 2009 AVAILABLE PERIOD OF RECORD (POR) 01/21/2009 - Current LENGTH OF AVAILABLE POR DATA 12.69 Years | 4,636 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.75 feet Gage Height STAFF GAGES None CREST STAGE GAGES None ZERO GAGE HEIGHT ELEVATION 1,163.24 feet NAVD88 POINT OF ZERO FLOW 0.05 feet Gage Height EXTREME FOR PERIOD OF RECORD 158 cfs | 2.60 feet Gage Height | 09/08/2014 FCDMC Annual Surface Water Report, Water Year 2021 Page 559 Location Map FCDMC Annual Surface Water Report, Water Year 2021 Page 560 WY2021 Events Date of Peak Peak Gage Height Peak Discharge (cfs) 07/23/2021 0.87 3 Hydrograph of peak WY 2021 flow event, 07/23/2021 Flood Flow Frequency There is not enough data to compute a flood flow frequency for this gage station. FCDMC Annual Surface Water Report, Water Year 2021 Page 561 Pecos West Inflow, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 3 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 0 MEAN 0 MAX 3 MIN 0 AC_FT 1 FCDMC Annual Surface Water Report, Water Year 2021 Page 562 Phoenix Dam #2A, ID #8907 Site Data LOCATION On 7th Street south of Thunderbird Road DRAINAGE AREA 0.75 mi2 STREAM TYPE Dam of natural drainage JURISDICTION Phoenix, Arizona WATERSHED Upper ACDC SECTION/TOWNSHIP/RANGE S16 T3N R3E LATITUDE N 33° 36' 13.2" | +33.60366 LONGITUDE W 112° 03' 52.8" | -112.06466 STREAMGAGE INSTALLATION DATE 06/29/2009 - WY 2009 AVAILABLE PERIOD OF RECORD (POR) 06/29/2009 - Current LENGTH OF AVAILABLE POR DATA 12.26 Years | 4,477 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.00 feet Gage Height ZERO GAGE HEIGHT ELEVATION 1,393.62 feet NAVD88 POINT OF ZERO FLOW 0.00 feet Gage Height SPILLWAY ELEVATION 16.5 feet Gage Height TOP OF DAM ELEVATION 22.5 feet Gage Height FCDMC Annual Surface Water Report, Water Year 2021 Page 563 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 564 WY2021 Events Date of Peak 07/16/2021 08/13/2021 08/18/2021 Peak Gage Height (feet) 0.42 10.37 2.60 Peak Volume (ac-ft) 0.9 17.6 4.5 Hydrograph of peak 2021 impoundment event, 08/13/2021 FCDMC Annual Surface Water Report, Water Year 2021 Page 565 Percent Spillway Capacity 1.6 29.4 7.6 Phoenix Dam #2A, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 2 14 4 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 7 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 1 28 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 0 13 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 7 MEAN 0 MAX 28 MIN 0 AC_FT 13 FCDMC Annual Surface Water Report, Water Year 2021 Page 566 Phoenix Dam #2A, volume data Volume, in acre-feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 1 14 2 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 1 18 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0 MAX 18 MIN 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 567 Phoenix Dam #2A, stage data Depth, in feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 6 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 7 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 8 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 9 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 10 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 11 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 12 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 13 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.7 0.0 14 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.4 0.0 15 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 16 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 17 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 18 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.0 19 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 20 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 21 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 22 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 23 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 24 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 25 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 26 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 27 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 28 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 29 0.0 0.0 0.0 0.0 --0.0 0.0 0.0 0.0 0.0 0.0 0.0 30 0.0 0.0 0.0 0.0 --0.0 0.0 0.0 0.0 0.0 0.0 0.0 31 0.0 --0.0 0.0 --0.0 --0.0 --0.0 0.0 -------------------------------------------------------------------------------MEAN 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.0 MAX 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.4 10.4 0.0 MIN 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0.01 MAX 10.37 MIN 0.00 FCDMC Annual Surface Water Report, Water Year 2021 Page 568 Phoenix Dam #2B, ID #9907 Site Data LOCATION On Thunderbird Road east of 7th Street DRAINAGE AREA 0.60 mi2 STREAM TYPE Dam of natural drainage JURISDICTION Phoenix, Arizona WATERSHED Upper ACDC SECTION/TOWNSHIP/RANGE S16 T3N R3E LATITUDE N 33° 36' 23.8" | +33.60660 LONGITUDE W 112° 03' 28.4" | -112.05789 STREAMGAGE INSTALLATION DATE 06/30/2009 - WY 2009 AVAILABLE PERIOD OF RECORD (POR) 06/30/2009 - Current LENGTH OF AVAILABLE POR DATA 12.25 Years | 4,476 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.00 feet Gage Height ZERO GAGE HEIGHT ELEVATION 1,398.20 feet NAVD88 POINT OF ZERO FLOW 0.00 feet Gage Height SPILLWAY ELEVATION 16.0 feet Gage Height TOP OF DAM ELEVATION 22.0 feet Gage Height FCDMC Annual Surface Water Report, Water Year 2021 Page 569 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 570 WY2021 Events Date of Peak Peak Gage Height (feet) Peak Volume (ac-ft) Percent Spillway Capacity 08/13/2021 4.16 1.7 3.5 Hydrograph of peak 2021 impoundment event, 08/13/2021 FCDMC Annual Surface Water Report, Water Year 2021 Page 571 Phoenix Dam #2B, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 1 14 1 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 3 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 18 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 0 5 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 3 MEAN 0 MAX 18 MIN 0 AC_FT 5 FCDMC Annual Surface Water Report, Water Year 2021 Page 572 Phoenix Dam #2B, volume data Volume, in acre-feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 2 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0 MAX 2 MIN 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 573 Phoenix Dam #2B, stage data Depth, in feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 6 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 7 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 8 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 9 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 10 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 11 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 12 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 13 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.3 0.0 14 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.2 0.0 15 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 16 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 17 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 18 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 19 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 20 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 21 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 22 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 23 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 24 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 25 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 26 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 27 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 28 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 29 0.0 0.0 0.0 0.0 --0.0 0.0 0.0 0.0 0.0 0.0 0.0 30 0.0 0.0 0.0 0.0 --0.0 0.0 0.0 0.0 0.0 0.0 0.0 31 0.0 --0.0 0.0 --0.0 --0.0 --0.0 0.0 -------------------------------------------------------------------------------MEAN 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 MAX 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 4.2 0.0 MIN 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0.00 MAX 4.16 MIN 0.00 FCDMC Annual Surface Water Report, Water Year 2021 Page 574 Phoenix Dam #3, ID #11507 Site Data LOCATION In the Sunnyslope area of Phoenix, east of Cave Creek Road DRAINAGE AREA 0.5 mi2 STREAM TYPE Dam of Natural Drainage JURISDICTION Phoenix, Arizona WATERSHED Upper ACDC SECTION/TOWNSHIP/RANGE S22 T3N R3E LATITUDE N 33° 35' 11.6" | +33.58656 LONGITUDE W 112° 02' 48.4" | -112.04678 STREAMGAGE INSTALLATION DATE 12/18/2001 - WY 2002 AVAILABLE PERIOD OF RECORD (POR) 12/18/2001 - Current LENGTH OF AVAILABLE POR DATA 19.79 Years | 7,227 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.65 feet Gage Height STAFF GAGES 1 ZERO GAGE HEIGHT ELEVATION 1,358.00 feet NAVD88 POINT OF ZERO FLOW 0.00 feet Gage Height SPILLWAY ELEVATION 24.0 feet Gage Height TOP OF DAM ELEVATION 30.0 feet Gage Height FCDMC Annual Surface Water Report, Water Year 2021 Page 575 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 576 WY2021 Events Date of Peak 08/13/2021 08/16/2021 Peak Gage Height (feet) 1.18 1.38 Peak Volume (ac-ft) 0.2 0.2 Hydrograph of peak 2021 impoundment event, 08/16/2021 FCDMC Annual Surface Water Report, Water Year 2021 Page 577 Percent Spillway Capacity 0.4 0.5 Phoenix Dam #3, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 8 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 0 MEAN 0 MAX 8 MIN 0 AC_FT 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 578 Phoenix Dam #3, volume data Volume, in acre-feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0 MAX 0 MIN 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 579 Phoenix Dam #3, stage data Depth, in feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 2 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 3 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 4 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 5 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 6 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 8 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 9 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 10 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 11 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 12 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 13 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 14 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 15 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 16 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 17 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 18 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 19 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 20 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 21 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 22 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 23 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 24 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 25 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 26 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 27 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 28 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 29 0.7 0.7 0.7 0.7 --0.7 0.7 0.7 0.7 0.7 0.7 0.7 30 0.7 0.7 0.7 0.7 --0.7 0.7 0.7 0.7 0.7 0.7 0.7 31 0.7 --0.7 0.7 --0.7 --0.7 --0.7 0.7 -------------------------------------------------------------------------------MEAN 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 MAX 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.9 1.4 0.7 MIN 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0.65 MAX 1.38 MIN 0.65 FCDMC Annual Surface Water Report, Water Year 2021 Page 580 Phoenix Dam #4, ID #12207 Site Data LOCATION East of 18th Street north of Northern Avenue DRAINAGE AREA 0.60 mi2 STREAM TYPE Dam of natural drainage JURISDICTION Phoenix, Arizona WATERSHED Upper ACDC SECTION/TOWNSHIP/RANGE S34 T3N R3E LATITUDE N 33° 33' 30.9" | +33.55857 LONGITUDE W 112° 02' 33.8" | -112.04272 STREAMGAGE INSTALLATION DATE 07/06/2009 - WY 2009 AVAILABLE PERIOD OF RECORD (POR) 07/06/2009 - Current LENGTH OF AVAILABLE POR DATA 12.24 Years | 4,470 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.00 feet Gage Height STAFF GAGES 0 ZERO GAGE HEIGHT ELEVATION 1,319.28 feet NAVD88 POINT OF ZERO FLOW 0.00 feet Gage Height SPILLWAY ELEVATION 15.0 feet Gage Height TOP OF DAM ELEVATION 21.0 feet Gage Height FCDMC Annual Surface Water Report, Water Year 2021 Page 581 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 582 WY2021 Events Date of Peak 07/30/2021 08/11/2021 08/13/2021 08/17/2021 08/18/2021 Peak Gage Height (feet) 5.68 3.58 5.70 9.29 3.98 Peak Volume (ac-ft) 3.4 1.3 3.4 10.0 1.6 Hydrograph of peak 2021 impoundment event, 08/17/2021 FCDMC Annual Surface Water Report, Water Year 2021 Page 583 Percent Spillway Capacity 7.9 3.1 8.0 23.3 3.9 Phoenix Dam #4, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 1 14 15 16 17 3 18 19 20 21 22 23 24 25 26 27 28 29 --30 --1 31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 1 4 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 21 27 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 1 8 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 4 MEAN 0 MAX 27 MIN 0 AC_FT 9 FCDMC Annual Surface Water Report, Water Year 2021 Page 584 Phoenix Dam #4, volume data Volume, in acre-feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 1 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 3 10 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0 MAX 10 MIN 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 585 Phoenix Dam #4, stage data Depth, in feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 2 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 3 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 4 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 5 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 6 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 7 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 8 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 9 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 10 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 11 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.2 0.1 12 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 13 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.2 0.1 14 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 15 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 16 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 17 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.9 0.1 18 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.2 0.1 19 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 20 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 21 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 22 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 23 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 24 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 25 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 26 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 27 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 28 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 29 0.1 0.1 0.1 0.1 --0.1 0.1 0.1 0.1 0.1 0.1 0.1 30 0.1 0.1 0.1 0.1 --0.1 0.1 0.1 0.1 0.2 0.1 0.1 31 0.1 --0.1 0.1 --0.1 --0.1 --0.1 0.1 -------------------------------------------------------------------------------MEAN 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 MAX 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 5.7 9.3 0.1 MIN 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0.10 MAX 9.29 MIN 0.10 FCDMC Annual Surface Water Report, Water Year 2021 Page 586 Phoenix Dam #7, ID #13307 Site Data LOCATION Located on the north side of North Mountain DRAINAGE AREA 0.60 mi2 STREAM TYPE Dam of natural drainage JURISDICTION Phoenix, Arizona WATERSHED Upper ACDC SECTION/TOWNSHIP/RANGE S17 T3N R3E LATITUDE N 33° 36' 04.4" | +33.60123 LONGITUDE W 112° 04' 21.5" | -112.07264 STREAMGAGE INSTALLATION DATE 12/19/2001 - WY 2002 AVAILABLE PERIOD OF RECORD (POR) 12/19/2001 - Current LENGTH OF AVAILABLE POR DATA 19.78 Years | 7,226 Days DATA GAPS IN POR 01/30/2009 -- 05/11/2009 STAGE GAGE ELEVATION 0.12 feet Gage Height STAFF GAGES 1 ZERO GAGE HEIGHT ELEVATION 1,371.34 feet NAVD88 POINT OF ZERO FLOW 0.00 feet Gage Height SPILLWAY ELEVATION 22.4 feet Gage Height TOP OF DAM ELEVATION 29.0 feet Gage Height FCDMC Annual Surface Water Report, Water Year 2021 Page 587 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 588 WY2021 Events Date of Peak 08/13/2021 08/18/2021 Peak Gage Height (feet) 12.15 5.72 Peak Volume (ac-ft) 15.1 2.2 Hydrograph of peak 2021 impoundment event, 08/13/2021 FCDMC Annual Surface Water Report, Water Year 2021 Page 589 Percent Spillway Capacity 13.1 2.1 Phoenix Dam #7, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 4 14 9 15 16 17 18 1 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 14 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 49 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 0 28 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 14 MEAN 0 MAX 49 MIN 0 AC_FT 28 FCDMC Annual Surface Water Report, Water Year 2021 Page 590 Phoenix Dam #7, volume data Volume, in acre-feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 1 14 1 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 15 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0 MAX 15 MIN 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 591 Phoenix Dam #7, stage data Depth, in feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 3 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 4 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 5 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 6 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 7 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 8 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 9 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 10 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 11 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 12 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 13 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 1.0 0.2 14 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 1.9 0.2 15 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 16 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 17 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 18 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.4 0.2 19 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 20 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 21 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 22 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 23 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 24 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 25 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 26 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 27 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 28 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 29 0.2 0.2 0.2 0.2 --0.2 0.2 0.2 0.2 0.2 0.2 0.2 30 0.2 0.2 0.2 0.2 --0.2 0.2 0.2 0.2 0.2 0.2 0.2 31 0.2 --0.2 0.2 --0.2 --0.2 --0.2 0.2 -------------------------------------------------------------------------------MEAN 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.3 0.2 MAX 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 12.2 0.2 MIN 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0.18 MAX 12.15 MIN 0.17 FCDMC Annual Surface Water Report, Water Year 2021 Page 592 Phoenix Dam #99, ID #12707 Site Data LOCATION Near SR 51 and 32nd Street DRAINAGE AREA 0.13 mi2 STREAM TYPE Dam of natural and local drainage JURISDICTION Phoenix, Arizona WATERSHED Upper ACDC SECTION/TOWNSHIP/RANGE S26 T3N R3E LATITUDE N 33° 34' 29.1" | +33.57476 LONGITUDE W 112° 00' 51.4" | -112.01428 STREAMGAGE INSTALLATION DATE 07/07/2009 - WY 2009 AVAILABLE PERIOD OF RECORD (POR) 07/07/2009 - Current LENGTH OF AVAILABLE POR DATA 12.24 Years | 4,469 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.00 feet Gage Height STAFF GAGES 0 ZERO GAGE HEIGHT ELEVATION 1,441.71 feet NAVD88 POINT OF ZERO FLOW 0.00 feet Gage Height SPILLWAY ELEVATION 19.8 feet Gage Height TOP OF DAM ELEVATION 24.3 feet Gage Height FCDMC Annual Surface Water Report, Water Year 2021 Page 593 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 594 WY2021 Events Date of Peak 07/23/2021 07/30/2021 08/11/2021 08/13/2021 08/16/2021 08/17/2021 08/18/2021 Peak Gage Height (feet) 0.54 0.57 1.37 0.52 1.07 0.99 0.29 Peak Volume (ac-ft) 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Hydrograph of peak 2021 impoundment event, 08/11/2021 FCDMC Annual Surface Water Report, Water Year 2021 Page 595 Percent Spillway Capacity 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Phoenix Dam #99, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 2 6 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 0 1 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 0 MEAN 0 MAX 6 MIN 0 AC_FT 1 FCDMC Annual Surface Water Report, Water Year 2021 Page 596 Phoenix Dam #99, volume data Volume, in acre-feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0 MAX 0 MIN 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 597 Phoenix Dam #99, stage data Depth, in feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 6 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 7 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 8 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 9 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 10 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 11 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 12 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 13 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 14 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 15 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 16 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 17 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.0 18 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 19 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 20 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 21 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 22 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 23 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 24 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 25 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 26 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 27 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 28 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 29 0.0 0.0 0.0 0.0 --0.0 0.0 0.0 0.0 0.0 0.0 0.0 30 0.0 0.0 0.0 0.0 --0.0 0.0 0.0 0.0 0.0 0.0 0.0 31 0.0 --0.0 0.0 --0.0 --0.0 --0.0 0.0 -------------------------------------------------------------------------------MEAN 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 MAX 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.6 1.4 0.0 MIN 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0.00 MAX 1.37 MIN 0.00 FCDMC Annual Surface Water Report, Water Year 2021 Page 598 Phoenix East Park Dam, ID #13007 Site Data LOCATION Near Peoria and Seventh Avenues DRAINAGE AREA 0.11 mi2 STREAM TYPE Dam of natural drainage JURISDICTION Phoenix, Arizona WATERSHED Upper ACDC SECTION/TOWNSHIP/RANGE S29 T3N R3E LATITUDE N 33° 34' 45.2" | +33.57923 LONGITUDE W 112° 04' 36.3" | -112.07676 STREAMGAGE INSTALLATION DATE 11/28/2001 - WY 2002 AVAILABLE PERIOD OF RECORD (POR) 11/28/2001 - Current LENGTH OF AVAILABLE POR DATA 19.84 Years | 7,247 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.10 feet Gage Height STAFF GAGES 1 ZERO GAGE HEIGHT ELEVATION 1,350.17 feet NAVD88 POINT OF ZERO FLOW 0.00 feet Gage Height SPILLWAY ELEVATION 19.8 feet Gage Height TOP OF DAM ELEVATION 24.8 feet Gage Height FCDMC Annual Surface Water Report, Water Year 2021 Page 599 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 600 WY2021 Events Date of Peak Peak Gage Height (feet) Peak Volume (ac-ft) Percent Spillway Capacity 08/13/2021 3.16 1.1 5.0 Hydrograph of peak 2021 impoundment event, 08/13/2021 FCDMC Annual Surface Water Report, Water Year 2021 Page 601 Phoenix East Park Dam, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 1 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 10 10 10 10 10 9 5 7 6 5 5 3 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 26 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 21 20 20 20 19 19 10 13 11 9 10 5 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 90 MEAN 0 MAX 26 MIN 0 AC_FT 178 FCDMC Annual Surface Water Report, Water Year 2021 Page 602 Phoenix East Park Dam, volume data Volume, in acre-feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 1 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0 MAX 1 MIN 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 603 Phoenix East Park Dam, stage data Depth, in feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 2 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 3 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 4 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 5 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 6 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 7 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 8 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 9 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 10 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 11 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 12 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 13 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.2 0.1 14 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 15 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 16 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 17 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 18 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 19 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 20 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 21 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 22 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 23 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 24 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 25 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 26 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 27 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 28 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 29 0.1 0.1 0.1 0.1 --0.1 0.1 0.1 0.1 0.1 0.1 0.1 30 0.1 0.1 0.1 0.1 --0.1 0.1 0.1 0.1 0.1 0.1 0.1 31 0.1 --0.1 0.1 --0.1 --0.1 --0.1 0.1 -------------------------------------------------------------------------------MEAN 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 MAX 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 3.2 0.1 MIN 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0.10 MAX 3.16 MIN 0.10 FCDMC Annual Surface Water Report, Water Year 2021 Page 604 Phoenix West Park Dam, ID #13507 Site Data LOCATION Near Peoria and Seventh Avenues DRAINAGE AREA 0.62 mi2 STREAM TYPE Dam of natural drainage JURISDICTION Phoenix, Arizona WATERSHED Upper ACDC SECTION/TOWNSHIP/RANGE S22 T3N R3E LATITUDE N 33° 35' 02.8" | +33.58412 LONGITUDE W 112° 04' 55.0" | -112.08195 STREAMGAGE INSTALLATION DATE 11/29/2001 - WY 2002 AVAILABLE PERIOD OF RECORD (POR) 11/29/2001 - Current LENGTH OF AVAILABLE POR DATA 19.84 Years | 7,246 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.20 feet Gage Height STAFF GAGES 1 ZERO GAGE HEIGHT ELEVATION 1,315.72 feet NAVD88 POINT OF ZERO FLOW 0.00 feet Gage Height SPILLWAY ELEVATION 24.0 feet Gage Height TOP OF DAM ELEVATION 30.0 feet Gage Height FCDMC Annual Surface Water Report, Water Year 2021 Page 605 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 606 WY2021 Events Date of Peak 08/13/2021 08/18/2021 Peak Gage Height (feet) 7.93 1.73 Peak Volume (ac-ft) 11.9 2.6 Hydrograph of peak 2021 impoundment event, 08/13/2021 FCDMC Annual Surface Water Report, Water Year 2021 Page 607 Percent Spillway Capacity 10.6 2.3 Phoenix West Park Dam, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 3 14 4 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 7 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 48 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 0 15 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 7 MEAN 0 MAX 48 MIN 0 AC_FT 15 FCDMC Annual Surface Water Report, Water Year 2021 Page 608 Phoenix West Park Dam, volume data Volume, in acre-feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 1 14 1 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 12 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0 MAX 12 MIN 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 609 Phoenix West Park Dam, stage data Depth, in feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 3 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 4 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 5 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 6 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 7 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 8 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 9 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 10 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 11 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 12 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 13 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.7 0.2 14 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.7 0.2 15 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 16 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 17 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 18 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 19 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 20 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 21 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 22 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 23 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 24 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 25 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 26 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 27 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 28 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 29 0.2 0.2 0.2 0.2 --0.2 0.2 0.2 0.2 0.2 0.2 0.2 30 0.2 0.2 0.2 0.2 --0.2 0.2 0.2 0.2 0.2 0.2 0.2 31 0.2 --0.2 0.2 --0.2 --0.2 --0.2 0.2 -------------------------------------------------------------------------------MEAN 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 MAX 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 7.9 0.2 MIN 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0.20 MAX 7.93 MIN 0.20 FCDMC Annual Surface Water Report, Water Year 2021 Page 610 Phoenix Zoo Dam #3, ID #4307 Site Data LOCATION Located in Papago Park on the north side of the Phoenix Zoo property. DRAINAGE AREA 0.07 mi2 STREAM TYPE Dam with permanent lake JURISDICTION Phoenix, Arizona WATERSHED Lower ACDC SECTION/TOWNSHIP/RANGE S04 T1N R4E LATITUDE N 33° 27' 10.1" | +33.45281 LONGITUDE W 111° 56' 53.1" | -111.94808 STREAMGAGE INSTALLATION DATE 04/25/2016 - WY 2016 AVAILABLE PERIOD OF RECORD (POR) 04/25/2016 - Current LENGTH OF AVAILABLE POR DATA 5.43 Years | 1,985 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 8.90 feet Gage Height STAFF GAGES 0 ZERO GAGE HEIGHT ELEVATION 1,230.16 feet NAVD88 POINT OF ZERO FLOW 9.0 feet Gage Height SPILLWAY CREST ELEVATION 12.80 feet Gage Height TOP OF BASIN ELEVATION 13.40 feet Gage Height FCDMC Annual Surface Water Report, Water Year 2021 Page 611 Location Map FCDMC Annual Surface Water Report, Water Year 2021 Page 612 WY2021 Events Date of Peak Peak Gage Height (feet) Peak Volume (ac-ft) Percent Spillway Capacity 08/16/2021 10.17 13.0 98.4 Hydrograph of peak 2021 impoundment, 08/16/2021 Station was down from 08/06/2021 – 08/16/2021 where this hydrograph begins. FCDMC Annual Surface Water Report, Water Year 2021 Page 613 Phoenix Zoo Dam #3, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 0 MEAN 0 MAX 0 MIN 0 AC_FT 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 614 Phoenix Zoo Dam #3, volume data Volume, in acre-feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 12 12 12 12 12 12 13 13 13 13 13 12 2 12 12 12 12 13 12 13 13 13 13 13 12 3 12 12 12 12 13 13 13 13 13 13 13 13 4 12 12 12 12 13 12 13 --13 13 13 13 5 12 12 12 12 13 12 13 13 13 13 13 12 6 12 12 12 12 12 13 13 13 13 13 13 12 7 12 12 12 12 12 13 13 13 13 13 --12 8 12 12 12 12 12 13 13 13 12 13 --12 9 12 12 12 12 12 13 13 --12 13 --12 10 12 12 12 12 12 12 13 13 12 13 --12 11 12 12 12 12 12 12 --12 13 --12 12 12 12 12 12 13 12 12 13 12 13 --12 13 12 12 12 12 13 12 13 --12 12 --12 14 12 12 12 12 12 12 13 --12 12 --12 15 12 12 12 12 12 12 13 --12 13 --12 16 12 12 12 13 12 12 13 --12 13 13 12 17 12 12 12 13 12 12 13 13 12 13 13 12 18 12 12 12 13 12 12 --13 13 13 13 12 19 12 12 12 13 12 13 13 13 13 13 13 12 20 12 12 12 13 12 13 13 13 13 13 13 12 21 12 12 12 13 12 13 13 13 13 13 13 12 22 12 12 12 13 12 12 13 13 13 13 13 12 23 12 12 12 13 12 12 13 13 13 --13 12 24 12 12 12 13 13 12 13 13 13 --13 12 25 12 12 12 12 12 12 13 13 13 --13 12 26 12 12 12 12 12 12 13 13 13 13 13 12 27 12 12 12 12 12 12 13 13 13 13 12 13 28 12 12 13 12 12 12 13 13 13 13 12 13 29 12 12 12 12 --13 13 13 13 13 12 12 30 12 12 12 12 --12 13 13 13 13 12 12 31 12 --12 12 --13 --13 --13 12 -------------------------------------------------------------------------------MEAN 12 12 12 12 12 12 13 13 13 13 13 12 MAX 13 13 13 13 13 13 13 13 13 13 13 13 MIN 12 12 12 12 12 12 12 13 12 12 12 12 -----------------------------------------------------------------------------WTR YR 2021 MEAN 12 MAX 13 MIN 12 FCDMC Annual Surface Water Report, Water Year 2021 Page 615 Phoenix Zoo Dam #3, stage data Depth, in feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 9.1 8.9 8.9 8.9 8.9 8.9 9.1 9.3 9.3 9.3 9.4 8.9 2 9.1 8.9 8.9 8.9 9.2 9.0 9.2 9.3 9.3 9.3 9.3 8.9 3 9.1 8.9 8.9 8.9 9.5 9.2 9.3 9.2 9.3 9.3 9.3 9.2 4 9.0 8.9 8.9 9.0 9.4 9.0 9.3 --9.3 9.3 9.3 9.1 5 9.0 8.9 8.9 9.0 9.1 9.2 9.3 9.5 9.2 9.3 9.4 8.9 6 9.0 8.9 8.9 9.0 9.1 9.4 9.3 9.3 9.2 9.3 9.4 8.9 7 9.0 8.9 8.9 9.0 9.1 9.3 9.3 9.3 9.1 9.3 --8.9 8 9.0 8.9 8.9 9.0 9.1 9.3 9.3 9.3 9.1 9.3 --8.9 9 8.9 8.9 9.0 9.0 9.1 9.2 9.3 --9.0 9.3 --9.0 10 8.9 8.9 9.1 8.9 9.1 9.0 9.3 9.3 9.0 9.3 --9.0 11 8.9 8.9 9.0 8.9 9.1 8.9 --0.0 8.9 9.2 --9.0 12 8.9 8.9 9.1 8.9 9.1 8.9 8.9 9.3 8.9 9.1 --8.9 13 8.9 8.9 8.9 8.9 9.1 8.9 9.2 --8.9 9.1 --8.9 14 8.9 8.9 8.9 9.0 9.1 8.9 9.3 --8.9 9.1 --8.9 15 8.9 8.9 8.9 9.0 8.9 8.9 9.3 --8.9 9.3 --8.9 16 8.9 8.9 8.9 9.2 8.9 8.9 9.3 --8.9 9.4 9.4 8.9 17 8.9 8.9 8.9 9.2 8.9 9.0 9.3 9.3 9.1 9.3 9.3 8.9 18 8.9 8.9 8.9 9.3 8.9 9.1 --9.2 9.4 9.3 9.3 8.9 19 8.9 8.9 8.9 9.3 8.9 9.2 9.3 9.3 9.6 9.3 9.4 9.1 20 8.9 8.9 8.9 9.2 8.9 9.2 9.3 9.3 9.6 9.3 9.5 9.1 21 9.0 9.0 9.0 9.3 8.9 9.3 9.3 9.3 9.5 9.3 9.4 9.1 22 9.0 9.1 9.0 9.3 9.0 9.1 9.2 9.3 9.5 9.3 9.3 9.1 23 8.9 9.1 8.9 9.3 9.1 9.0 9.3 9.3 9.4 --9.2 9.0 24 8.9 8.9 8.9 9.2 9.2 9.0 9.3 9.3 9.5 --9.2 8.9 25 8.9 8.9 8.9 9.0 9.1 8.9 9.3 9.3 9.8 --9.2 8.9 26 8.9 8.9 8.9 8.9 9.1 8.9 9.3 9.3 9.6 9.6 9.2 8.9 27 8.9 8.9 9.1 8.9 9.1 9.0 9.3 9.3 9.4 9.6 9.0 9.2 28 8.9 8.9 9.2 8.9 8.9 9.1 9.3 9.3 9.3 9.4 8.9 9.2 29 8.9 8.9 9.1 8.9 --9.2 9.3 9.2 9.3 9.4 8.9 9.0 30 8.9 8.9 8.9 8.9 --9.1 9.3 9.3 9.3 9.5 8.9 8.9 31 8.9 --9.0 8.9 --9.2 --9.3 --9.4 8.9 -------------------------------------------------------------------------------MEAN 8.9 8.9 9.0 9.0 9.1 9.1 9.3 9.3 9.2 9.3 9.3 9.0 MAX 9.2 9.3 9.3 9.6 9.8 9.8 9.7 10.2 9.8 9.7 10.2 9.3 MIN 8.9 8.9 8.9 8.9 8.9 8.9 8.9 9.2 8.9 9.1 8.9 8.9 -----------------------------------------------------------------------------WTR YR 2021 MEAN 9.11 MAX 10.22 MIN 8.90 FCDMC Annual Surface Water Report, Water Year 2021 Page 616 Phoenix Zoo Dam #5, ID #4407 Site Data LOCATION Located within the Phoenix Zoo property at the southwest corner. DRAINAGE AREA 0.32 mi2 STREAM TYPE Dam with permanent lake JURISDICTION Phoenix, Arizona WATERSHED Lower ACDC SECTION/TOWNSHIP/RANGE S09 T1N R4E LATITUDE N 33° 26' 57.1" | +33.44920 LONGITUDE W 111° 57' 04.2" | -111.95117 STREAMGAGE INSTALLATION DATE 04/28/2016 - WY 2016 AVAILABLE PERIOD OF RECORD (POR) 04/28/2016 - Current LENGTH OF AVAILABLE POR DATA 5.43 Years | 1,982 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 7.75 feet Gage Height STAFF GAGES 0 ZERO GAGE HEIGHT ELEVATION 1,205.00 feet NAVD88 POINT OF ZERO FLOW Approximately 7.8 feet Gage Height SPILLWAY CREST ELEVATION 8.70 feet Gage Height TOP OF BASIN ELEVATION 9.20 feet Gage Height FCDMC Annual Surface Water Report, Water Year 2021 Page 617 Location Map FCDMC Annual Surface Water Report, Water Year 2021 Page 618 WY2021 Events Date of Peak Peak Gage Height (feet) Peak Volume (ac-ft) Percent Spillway Capacity 07/22/2021 9.00 10.0 103.8 Hydrograph of peak 2021 impoundment event, 07/22/2021 FCDMC Annual Surface Water Report, Water Year 2021 Page 619 Phoenix Zoo Dam #5, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2020 TOTAL 0 MEAN 0 MAX 0 MIN 0 AC_FT 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 620 Phoenix Zoo Dam #5, volume data Volume, in acre-feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 9 9 9 9 9 9 9 9 9 9 9 9 2 9 9 9 9 9 9 9 9 9 9 9 9 3 9 9 9 9 9 9 9 9 9 9 9 9 4 9 9 9 9 9 9 9 9 9 9 9 9 5 9 9 9 9 9 9 9 9 9 9 9 9 6 9 9 9 9 9 9 9 9 9 9 9 9 7 9 9 9 9 9 9 9 9 9 9 9 9 8 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 10 9 9 9 9 9 9 9 9 9 9 9 9 11 9 9 9 9 9 9 9 9 9 9 9 9 12 9 9 9 9 9 9 9 9 9 9 9 9 13 9 9 9 9 9 9 9 9 9 9 9 9 14 9 9 9 9 9 9 9 9 9 9 9 9 15 9 9 9 9 9 9 9 9 9 9 9 9 16 9 9 9 9 9 9 9 9 9 9 9 9 17 9 9 9 9 9 9 9 9 9 9 9 9 18 9 9 9 9 9 9 9 9 9 9 9 9 19 9 9 9 9 9 9 9 9 9 9 9 9 20 9 9 9 9 9 9 9 9 9 9 9 9 21 9 9 9 9 9 9 9 9 9 9 9 9 22 9 9 9 9 9 9 9 9 9 9 9 9 23 9 9 9 9 9 9 9 9 9 9 9 9 24 9 9 9 9 9 9 9 9 9 9 9 9 25 9 9 9 9 9 9 9 9 9 9 9 9 26 9 9 9 9 9 9 9 9 9 9 9 9 27 9 9 9 9 9 9 9 9 9 9 9 9 28 9 9 9 9 9 9 9 9 9 9 9 9 29 9 9 9 9 --9 9 9 9 9 9 9 30 9 9 9 9 --9 9 9 9 9 9 9 31 9 --9 9 --9 --9 --9 9 -------------------------------------------------------------------------------MEAN 9 9 9 9 9 9 9 9 9 9 9 9 MAX 9 9 9 9 9 9 9 9 9 10 9 9 MIN 9 9 9 9 9 9 9 9 9 9 9 9 -----------------------------------------------------------------------------WTR YR 2021 MEAN 9 MAX 10 MIN 9 FCDMC Annual Surface Water Report, Water Year 2021 Page 621 Phoenix Zoo Dam #5, stage data Depth, in feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 8.3 8.3 8.4 8.4 8.3 8.3 8.3 8.3 8.3 8.2 8.4 8.4 2 8.3 8.3 8.4 8.4 8.3 8.3 8.3 8.3 8.3 8.2 8.4 8.4 3 8.3 8.3 8.4 8.5 8.4 8.3 8.4 8.3 8.3 8.2 8.5 8.5 4 8.3 8.4 8.4 8.5 8.3 8.3 8.4 8.3 8.3 8.2 8.5 8.5 5 8.3 8.4 8.4 8.5 8.3 8.3 8.4 8.3 8.3 8.2 8.5 8.5 6 8.3 8.4 8.4 8.5 8.3 8.3 8.3 8.3 8.3 8.2 8.4 8.5 7 8.3 8.4 8.4 8.5 8.3 8.3 8.3 8.3 8.2 8.2 8.4 8.4 8 8.3 8.3 8.3 8.5 8.3 8.3 8.3 8.3 8.2 8.2 8.4 8.4 9 8.3 8.4 8.4 8.5 8.3 8.3 8.3 8.3 8.2 8.2 8.4 8.5 10 8.3 8.3 8.4 8.5 8.3 8.3 8.3 8.3 8.2 8.2 8.4 8.5 11 8.3 8.3 8.4 8.5 8.3 8.3 8.3 8.3 8.3 8.2 8.4 8.5 12 8.3 8.3 8.4 8.5 8.4 8.3 8.3 8.3 8.2 8.2 8.5 8.5 13 8.3 8.3 8.4 8.5 8.3 8.4 8.3 8.3 8.3 8.2 8.5 8.5 14 8.3 8.3 8.4 8.5 8.3 8.4 8.3 8.3 8.2 8.2 8.5 8.5 15 8.3 8.4 8.4 8.5 8.3 8.4 8.3 8.3 8.2 8.2 8.4 8.5 16 8.3 8.4 8.4 8.5 8.3 8.4 8.3 8.3 8.2 8.3 8.4 8.4 17 8.3 8.4 8.4 8.5 8.3 8.4 8.3 8.3 8.2 8.3 8.5 8.5 18 8.3 8.4 8.4 8.6 8.3 8.4 8.3 8.3 8.2 8.3 8.5 8.5 19 8.3 8.4 8.4 8.6 8.3 8.4 8.3 8.3 8.3 8.3 8.4 8.5 20 8.3 8.4 8.4 8.5 8.3 8.4 8.3 8.2 8.3 8.3 8.5 8.5 21 8.4 8.4 8.4 8.3 8.3 8.4 8.3 8.2 8.3 8.3 8.5 8.5 22 8.4 8.4 8.4 8.3 8.3 8.4 8.3 8.3 8.3 8.3 8.5 8.5 23 8.4 8.4 8.4 8.3 8.3 8.4 8.3 8.2 8.3 8.6 8.5 8.5 24 8.4 8.4 8.4 8.3 8.3 8.4 8.3 8.3 8.3 8.5 8.5 8.5 25 8.4 8.4 8.4 8.3 8.3 8.3 8.3 8.3 8.3 8.5 8.5 8.5 26 8.4 8.4 8.4 8.3 8.3 8.3 8.3 8.3 8.3 8.5 8.5 8.5 27 8.4 8.4 8.4 8.3 8.3 8.3 8.3 8.3 8.3 8.5 8.5 8.6 28 8.4 8.4 8.4 8.3 8.3 8.3 8.3 8.3 8.3 8.5 8.5 8.6 29 8.4 8.4 8.4 8.3 --8.3 8.3 8.3 8.2 8.5 8.4 8.5 30 8.3 8.4 8.4 8.3 --8.3 8.3 8.3 8.2 8.5 8.4 8.5 31 8.3 --8.4 8.3 --8.3 --8.3 --8.4 8.4 -------------------------------------------------------------------------------MEAN 8.3 8.4 8.4 8.4 8.3 8.3 8.3 8.3 8.3 8.3 8.5 8.5 MAX 8.4 8.4 8.4 8.6 8.4 8.4 8.4 8.3 8.4 9.0 8.6 8.6 MIN 8.3 8.3 8.3 8.3 8.3 8.3 8.2 8.2 8.2 8.2 8.4 8.4 -----------------------------------------------------------------------------WTR YR 2021 MEAN 8.36 MAX 9.00 MIN 8.19 FCDMC Annual Surface Water Report, Water Year 2021 Page 622 Picacho Wash, ID #74207 Site Data LOCATION Located near milepost 10 on SR74 DRAINAGE AREA 17.8 mi2 STREAM TYPE Natural Stream JURISDICTION Maricopa County, Arizona WATERSHED Trilby SECTION/TOWNSHIP/RANGE S28 T6N R2W LATITUDE N 33° 50' 08.3" | +33.83563 LONGITUDE W 112° 28' 32.1" | -112.47557 ARIZONA STATE PLANE E 530364 | N 1032224 USGS QUAD SHEET Hieroglyphic Mountains SW 7.5-Minute STREAMGAGE INSTALLATION DATE 04/11/2012 - WY 2012 AVAILABLE PERIOD OF RECORD (POR) 04/11/2012 - Current LENGTH OF AVAILABLE POR DATA 9.47 Years | 3,460 Days DATA GAPS IN POR None STAGE GAGE TYPE Pressure Transducer STAGE GAGE ELEVATION 0.90 feet Gage Height STAFF GAGES 0 CREST STAGE GAGES 1 ZERO GAGE HEIGHT ELEVATION 1,961.78 feet NAVD88 POINT OF ZERO FLOW 0.1 feet EXTREME FOR PERIOD OF RECORD 2,437 cfs | 4.41 feet | 09/23/2019 FCDMC Annual Surface Water Report, Water Year 2021 Page 623 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 624 WY2021 Events Date of Peak Peak Gage Height Peak Discharge (cfs) None Hydrograph of peak WY 2021 flow event, No runoff recorded in Water Year 2021. Flood Flow Frequency There is not enough data to compute a flood flow frequency for this gage station. FCDMC Annual Surface Water Report, Water Year 2021 Page 625 Picacho Wash, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 --7 8 9 10 11 12 13 14 ----15 16 --17 --18 --19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 0 MEAN 0 MAX 0 MIN 0 AC_FT 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 626 Pima Canyon Wash, ID #68707 Site Data LOCATION Located near 48th Street and Guadalupe Road DRAINAGE AREA 1.51 mi2 STREAM TYPE Culvert JURISDICTION Phoenix, Arizona WATERSHED South Mountain SECTION/TOWNSHIP/RANGE S05 T1S R4E LATITUDE N 33° 21' 54.1" | +33.36504 LONGITUDE W 111° 58' 30.4" | -111.97512 STREAMGAGE INSTALLATION DATE 04/15/2014 - WY 2014 AVAILABLE PERIOD OF RECORD (POR) 04/15/2014 - Current LENGTH OF AVAILABLE POR DATA 7.46 Years | 2,726 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 1.69 feet Gage Height STAFF GAGES 1 CREST STAGE GAGES None ZERO GAGE HEIGHT ELEVATION 1,302.90 feet NAVD88 POINT OF ZERO FLOW 1.5 feet Gage Height EXTREME FOR PERIOD OF RECORD 345 cfs | 6.52 feet Gage Height | 09/08/2014 FCDMC Annual Surface Water Report, Water Year 2021 Page 627 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 628 WY2021 Events Date of Peak Peak Gage Height Peak Discharge (cfs) None Hydrograph of peak WY 2021 flow event, No runoff recorded in Water Year 2021. Flood Flow Frequency There is not enough data to compute a flood flow frequency for this gage station. FCDMC Annual Surface Water Report, Water Year 2021 Page 629 Pima Canyon Wash, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 --9 --10 --11 --12 --13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 0 MEAN 0 MAX 0 MIN 0 AC_FT 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 630 Powder House Wash, ID #52507 Site Data LOCATION In Wickenburg, north of Constellation Road DRAINAGE AREA 1.8 mi2 STREAM TYPE Natural Stream JURISDICTION Wickenburg, Arizona WATERSHED Lower Hassayampa SECTION/TOWNSHIP/RANGE S06 T7N R4W LATITUDE N 33° 58' 51.0" | +33.98083 LONGITUDE W 112° 43' 02.3" | -112.71732 STREAMGAGE INSTALLATION DATE 05/18/1995 - WY 1995 AVAILABLE PERIOD OF RECORD (POR) 05/18/1995 - Current LENGTH OF AVAILABLE POR DATA 26.37 Years | 9,633 Days DATA GAPS IN POR None STAGE GAGE ELEVATION -0.50 feet Gage Height STAFF GAGES 0 CREST STAGE GAGES 2 ZERO GAGE HEIGHT ELEVATION 2,133.59 feet NAVD88 POINT OF ZERO FLOW -0.6 feet Gage Height EXTREME FOR PERIOD OF RECORD 2,312 cfs | 2.42 feet | 07/18/2015 FCDMC Annual Surface Water Report, Water Year 2021 Page 631 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 632 WY2021 Events Date of Peak 7/15/2021 07/21/2021 Peak Gage Height (feet) -0.09 0.79 Peak Discharge (cfs) 19 373 Hydrograph of peak WY 2021 flow event, 07/21/2021 Flood Flow Frequency Flood Flow Frequency N=27, HEC-WRC computation (based on 27 years of data) 2-year 5-year 10-year 20-year 50-year 100-year 148 664 1,280 2,070 3,340 4,440 NOTE: These results are based on very limited data. FCDMC Annual Surface Water Report, Water Year 2021 Page 633 Powder House Wash, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 ----2 --3 --4 --5 ----6 --7 8 9 10 --11 12 ----13 14 --15 --16 17 18 --19 --20 ----21 6 --22 ----23 24 --25 ------26 --27 --28 29 ----30 ----31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 6 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 373 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 13 0 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 8 MEAN 0 MAX 373 MIN 0 AC_FT 17 NOTE: Elevation of level sensor is about 0.5 feet above channel. FCDMC Annual Surface Water Report, Water Year 2021 Page 634 Powerline Floodway, ID #37507 Site Data LOCATION Located near Ellsworth and Ray Roads DRAINAGE AREA Not Determined STREAM TYPE Engineered Channel JURISDICTION Mesa, Arizona WATERSHED Lower East Maricopa Floodway SECTION/TOWNSHIP/RANGE S28 T1S R7E LATITUDE N 33° 19' 16.4" | +33.32123 LONGITUDE W 111° 38' 09.9" | -111.63609 STREAMGAGE INSTALLATION DATE 02/13/2008 - WY 2008 AVAILABLE PERIOD OF RECORD (POR) 02/13/2008 - Current LENGTH OF AVAILABLE POR DATA 13.63 Years | 4,979 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.20 feet Gage Height STAFF GAGES None CREST STAGE GAGES None ZERO GAGE HEIGHT ELEVATION 1,381.65 feet NAVD88 POINT OF ZERO FLOW 0.00 feet Gage Height EXTREME FOR PERIOD OF RECORD 1,077 cfs | 4.70 feet | 09/04/2012 FCDMC Annual Surface Water Report, Water Year 2021 Page 635 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 636 WY2021 Events Date of Peak 07/25/2021 08/11/2021 08/14/2021 08/17/2021 09/02/2021 Peak Gage Height 1.25 0.77 0.95 1.20 0.67 Peak Discharge (cfs) 85 42 57 80 34 Hydrograph of peak WY 2021 flow event, 07/25/2021 Flood Flow Frequency Runoff at this station is mainly due to discharge from Powerline FRS and Vineyard FRS and is regulated by the size of the outlets for each structure. Flood Frequency data would not be meaningful at this location. FCDMC Annual Surface Water Report, Water Year 2021 Page 637 Powerline Floodway, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 6 3 4 5 6 7 8 9 10 11 10 12 13 14 42 15 20 16 4 17 61 18 37 19 14 20 2 21 22 23 19 24 35 25 58 26 39 27 13 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 165 190 6 MEAN 0 0 0 0 0 0 0 0 0 5 6 0 MAX 0 0 0 0 0 0 0 0 0 85 80 34 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 327 376 12 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 360 MEAN 1 MAX 85 MIN 0 AC_FT 715 FCDMC Annual Surface Water Report, Water Year 2021 Page 638 Powerline FRS, ID #36807 Site Data LOCATION Located south of Apache Junction east of Ironwood Road DRAINAGE AREA 46.2 mi2 STREAM TYPE Dam of natural drainage JURISDICTION Pinal County, Arizona WATERSHED Upper East Maricopa Floodway SECTION/TOWNSHIP/RANGE S09 T1S R8E LATITUDE N 33° 21' 16.7" | +33.35463 LONGITUDE W 111° 32' 45.5" | -111.54598 STREAMGAGE INSTALLATION DATE 12/02/1992 - WY 1993 AVAILABLE PERIOD OF RECORD (POR) 12/02/1992 - Current LENGTH OF AVAILABLE POR DATA 28.83 Years | 10,530 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.20 feet Gage Height STAFF GAGES 5 ZERO GAGE HEIGHT ELEVATION 1,563.82 feet NAVD88 POINT OF ZERO FLOW 0.00 feet Gage Height SPILLWAY ELEVATION 21.1 feet Gage Height TOP OF DAM ELEVATION 25.6 feet Gage Height FCDMC Annual Surface Water Report, Water Year 2021 Page 639 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 640 WY2021 Events Date of Peak 07/25/2021 08/14/2021 08/17/2021 Peak Gage Height (feet) 0.63 1.42 1.57 Peak Volume (ac-ft) 40.3 90.6 100.1 Hydrograph of peak 2021 impoundment event, 08/17/2021 FCDMC Annual Surface Water Report, Water Year 2021 Page 641 Percent Spillway Capacity 0.6 1.6 1.8 Powerline FRS, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 12 15 3 16 17 15 18 7 19 20 21 22 23 24 3 25 7 26 3 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 13 36 0 MEAN 0 0 0 0 0 0 0 0 0 0 1 0 MAX 0 0 0 0 0 0 0 0 0 8 20 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 26 72 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 49 MEAN 0 MAX 20 MIN 0 AC_FT 97 FCDMC Annual Surface Water Report, Water Year 2021 Page 642 Powerline FRS, volume data Volume, in acre-feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 60 15 13 16 17 77 18 38 19 20 21 22 23 24 14 25 34 26 15 27 28 29 --30 --31 ---------------------------------------------------------------------------------------MEAN 0 0 0 0 0 0 0 0 0 2 6 0 MAX 0 0 0 0 0 0 0 0 0 40 100 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 1 MAX 100 MIN 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 643 Powerline FRS, stage data Depth, in feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 3 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 4 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 5 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 6 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 7 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 8 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 9 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 10 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 11 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 12 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 13 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 14 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 1.0 0.2 15 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.3 0.2 16 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 17 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 1.2 0.2 18 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.6 0.2 19 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 20 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 21 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 22 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 23 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 24 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.3 0.2 0.2 25 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.5 0.2 0.2 26 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.3 0.2 0.2 27 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 28 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 29 0.2 0.2 0.2 0.2 --0.2 0.2 0.2 0.2 0.2 0.2 0.2 30 0.2 0.2 0.2 0.2 --0.2 0.2 0.2 0.2 0.2 0.2 0.2 31 0.2 --0.2 0.2 --0.2 --0.2 --0.2 0.2 -------------------------------------------------------------------------------MEAN 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.3 0.2 MAX 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.6 1.6 0.2 MIN 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0.21 MAX 1.57 MIN 0.20 FCDMC Annual Surface Water Report, Water Year 2021 Page 644 Price Drain, ID #31507 Site Data LOCATION Located within the Loop 101 / Loop 202 Interchange DRAINAGE AREA Not Determined STREAM TYPE Engineered Channel JURISDICTION Mesa WATERSHED Lower East Maricopa Floodway SECTION/TOWNSHIP/RANGE S18 T1N R5E LATITUDE N 33° 26' 03.8" | +33.43440 LONGITUDE W 111° 53' 25.0" | -111.89028 STREAMGAGE INSTALLATION DATE 02/18/2001 - WY 2001 AVAILABLE PERIOD OF RECORD (POR) 02/18/2001 - Current LENGTH OF AVAILABLE POR DATA DATA 20.62 Years | 7,530 Days DATA GAPS IN POR None STAGE GAGE TYPE Pressure Transducer STAGE GAGE ELEVATION 0.20 feet Gage Height ZERO GAGE HEIGHT ELEVATION 1,158.14 feet NAVD88 POINT OF ZERO FLOW 0.00 feet Gage Height EXTREME FOR PERIOD OF RECORD 993 cfs | 8.50 feet | 03/04/2004 FCDMC Annual Surface Water Report, Water Year 2021 Page 645 Location Map (watershed undetermined) FCDMC Annual Surface Water Report, Water Year 2021 Page 646 WY2021 Events Date of Peak 12/10/2020 01/25/2021 07/14/2021 07/14/2021 07/16/2021 07/22/2021 07/23/2021 07/24/2021 07/24/2021 07/25/2021 07/26/2021 07/31/2021 08/10/2021 08/14/2021 08/16/2021 08/17/2021 08/18/2021 09/02/2021 09/18/2021 Peak Gage Height (feet) 2.37 2.96 2.49 2.42 2.19 2.84 4.24 4.16 4.69 3.04 2.69 2.29 2.12 3.89 3.29 3.14 2.91 4.54 3.14 Hydrograph of peak WY 2021 flow event, 07/24/2021 Flood Flow Frequency This site is not suitable to compute a flood flow frequency. FCDMC Annual Surface Water Report, Water Year 2021 Page 647 Peak Discharge (cfs) 86 132 95 90 74 122 260 250 322 138 110 81 70 219 160 147 127 301 147 Price Drain, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 21 19 24 15 16 18 18 18 28 23 13 93 2 18 18 19 19 9 20 16 18 26 28 9 73 3 19 22 20 16 9 16 15 20 30 19 9 17 4 16 22 21 18 11 20 18 23 44 15 15 15 5 21 21 19 18 11 20 15 26 28 20 12 12 6 21 22 19 17 11 23 11 23 20 20 11 14 7 21 19 18 20 11 19 15 37 21 25 15 12 8 27 15 13 18 16 19 10 24 26 22 12 14 9 24 18 13 13 12 18 17 20 26 24 13 13 10 22 20 41 17 16 18 13 21 25 21 43 18 11 19 24 18 18 20 19 12 21 21 20 50 19 12 22 26 10 17 19 26 12 30 20 26 56 15 13 20 19 11 16 17 30 13 21 18 27 55 13 14 23 21 11 18 19 21 16 19 21 60 137 12 15 23 21 10 17 17 19 13 18 22 42 64 15 16 25 17 11 16 17 19 18 17 26 51 122 14 17 21 13 11 15 20 17 22 19 27 28 99 17 18 22 13 11 15 18 17 19 25 31 17 81 27 19 18 16 10 14 18 20 19 33 23 15 75 20 20 8 11 12 19 17 22 23 34 24 18 34 13 21 12 11 20 19 19 20 23 38 18 19 19 14 22 12 9 20 19 22 21 21 32 19 29 18 15 23 21 10 17 18 20 22 33 19 25 154 20 15 24 17 10 12 23 17 19 19 24 25 164 20 20 25 13 14 14 62 18 23 19 30 20 89 21 20 26 15 12 14 56 16 17 19 39 21 56 22 27 27 16 13 15 21 19 15 20 23 15 27 34 20 28 16 16 14 18 18 14 27 24 17 22 30 14 29 39 18 15 19 --12 18 23 18 14 21 12 30 26 22 15 25 --12 18 21 20 17 16 13 31 20 --15 20 --12 --19 --46 19 -------------------------------------------------------------------------------TOTAL 619 514 492 638 455 585 532 757 707 1159 1162 615 MEAN 20 17 16 21 16 19 18 24 24 37 37 20 MAX 60 40 86 132 29 54 48 63 66 322 219 301 MIN 5 7 7 11 6 7 7 13 13 10 6 9 AC_FT 1228 1019 976 1265 902 1161 1056 1501 1402 2298 2305 1219 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 8234 MEAN 23 MAX 322 MIN 5 AC_FT 16333 NOTE: There is almost always a base flow at this location, of undetermined origin. FCDMC Annual Surface Water Report, Water Year 2021 Page 648 Prickly Pear Wash, ID #8107 Site Data LOCATION Located at John Teets Park near Ramuda Drive and 43rd Way DRAINAGE AREA 1.38 mi2 STREAM TYPE Natural Stream JURISDICTION Phoenix, Arizona WATERSHED Skunk Creek SECTION/TOWNSHIP/RANGE S06 T4N R4E LATITUDE N 33° 43' 15.9" | +33.72107 LONGITUDE W 111° 59' 24.0" | -111.99001 STREAMGAGE INSTALLATION DATE 06/01/2017 - WY 2017 AVAILABLE PERIOD OF RECORD (POR) 06/01/2017 - Current LENGTH OF AVAILABLE POR DATA 4.33 Years | 1,583 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.70 feet Gage Height STAFF GAGES None CREST STAGE GAGES None ZERO GAGE HEIGHT ELEVATION 1,730.25 feet NAVD88 POINT OF ZERO FLOW 0.0 feet Gage Height EXTREME FOR PERIOD OF RECORD None recorded since installation FCDMC Annual Surface Water Report, Water Year 2021 Page 649 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 650 WY2021 Events Date of Peak Peak Gage Height Peak Discharge (cfs) None Hydrograph of peak WY 2021 flow event There was no runoff events recorded in Water Year 2021. Flood Flow Frequency There is not enough data to compute a flood flow frequency for this gage station. FCDMC Annual Surface Water Report, Water Year 2021 Page 651 Prickly Pear Wash, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 0 MEAN 0 MAX 0 MIN 0 AC_FT 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 652 Queen Creek at CAP, ID #38007 Site Data LOCATION Located in Pinal County at the CAP crossing and the Sonoqui Dike DRAINAGE AREA 256 mi2 STREAM TYPE Dike across natural stream JURISDICTION Pinal County, Arizona WATERSHED Upper East Maricopa Floodway SECTION/TOWNSHIP/RANGE S26 T2S R8E LATITUDE N 33° 13' 55.8" | +33.23216 LONGITUDE W 111° 30' 11.3" | -111.50314 STREAMGAGE INSTALLATION DATE 01/14/1999 - WY 1999 AVAILABLE PERIOD OF RECORD (POR) 01/14/1999 - Current LENGTH OF AVAILABLE POR DATA 22.71 Years | 8,296 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.20 feet Gage Height STAFF GAGES 0 CREST STAGE GAGES 0 ZERO GAGE HEIGHT ELEVATION 1,569.00 feet NAVD88 POINT OF ZERO FLOW 0.0 feet Gage Height EXTREME FOR PERIOD OF RECORD 1,043 cfs | 10.15 feet | 02/12/2005 FCDMC Annual Surface Water Report, Water Year 2021 Page 653 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 654 WY2021 Events Date of Peak 07/22/2021 07/22/2021 07/24/2021 07/24/2021 07/25/2021 07/26/2021 08/11/2021 08/14/2021 08/15/2021 08/17/2021 Peak Gage Height 3.14 3.46 2.96 3.95 3.95 3.33 3.86 3.70 4.63 5.55 Peak Discharge (cfs) 43 82 25 151 151 66 136 112 264 434 Hydrograph of peak WY 2021 flow event, 08/17/2021 Flood Flow Frequency Flood Frequency cannot be calculated due to the metering and limit of the culvert inlets.. FCDMC Annual Surface Water Report, Water Year 2021 Page 655 Queen Creek at CAP, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 34 12 13 3 14 119 15 96 16 17 91 18 2 19 20 21 22 2 23 5 24 38 25 57 26 22 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 124 344 0 MEAN 0 0 0 0 0 0 0 0 0 4 11 0 MAX 0 0 0 0 0 0 0 0 0 151 434 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 245 682 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 467 MEAN 1 MAX 434 MIN 0 AC_FT 927 FCDMC Annual Surface Water Report, Water Year 2021 Page 656 Queen Creek at Rittenhouse Road, ID #37707 Site Data LOCATION At the Queen Creek crossing of Rittenhouse Road DRAINAGE AREA 236 mi2 STREAM TYPE Natural Stream at culvert JURISDICTION Queen Creek, Arizona WATERSHED Upper East Maricopa Floodway SECTION/TOWNSHIP/RANGE S25 T2S R7E LATITUDE N 33° 13' 48.9" | +33.23025 LONGITUDE W 111° 35' 39.4" | -111.59428 STREAMGAGE INSTALLATION DATE 09/14/1993 - WY 1993 AVAILABLE PERIOD OF RECORD (POR) 09/14/1993 – 09/18/2019 LENGTH OF AVAILABLE POR DATA 28.05 Years | 10,244 Days DATA GAPS IN POR 05/28/2014 - 06/29/2014, 09/18/2019 – 07/22/2020 STAGE GAGE ELEVATION 0.10 feet Gage Height STAFF GAGES 1 CREST STAGE GAGES 1 ZERO GAGE HEIGHT ELEVATION 1,438.00 feet NAVD88 POINT OF ZERO FLOW 0.0 feet Gage Height EXTREME FOR PERIOD OF RECORD 575 cfs | 2.25 feet | 01/06/1995 FCDMC Annual Surface Water Report, Water Year 2021 Page 657 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 658 WY2021 Events Date of Peak 08/17/2021 08/17/2021 Peak Gage Height 0.65 1.05 Peak Discharge (cfs) 47 97 Hydrograph of peak WY 2021 flow event, 08/17/2021 Flood Flow Frequency There is not enough data to compute a flood flow frequency for this gage station. FCDMC Annual Surface Water Report, Water Year 2021 Page 659 Queen Creek at Rittenhouse Road, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 2 17 40 18 --2 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 44 0 MEAN 0 0 0 0 0 0 0 0 0 0 1 0 MAX 0 0 0 0 0 0 0 0 0 8 97 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 0 87 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 44 MEAN 0 MAX 97 MIN 0 AC_FT 87 FCDMC Annual Surface Water Report, Water Year 2021 Page 660 Rainbow Wash, ID #42807 Site Data LOCATION Located on SR85 about 10 miles south of Buckeye DRAINAGE AREA 17.6 mi2 STREAM TYPE Natural Stream JURISDICTION Maricopa County, Arizona WATERSHED Gillespie SECTION/TOWNSHIP/RANGE S23 T2S R4W LATITUDE N 33° 14' 08.0" | +33.23556 LONGITUDE W 112° 38' 21.0" | -112.63917 STREAMGAGE INSTALLATION DATE 11/06/2000 - WY 2001 AVAILABLE PERIOD OF RECORD (POR) 11/06/2000 - Current LENGTH OF AVAILABLE POR DATA 20.90 Years | 7,634 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.07 feet Gage Height STAFF GAGES 0 CREST STAGE GAGES 1 ZERO GAGE HEIGHT ELEVATION 900.06 feet NAVD88 POINT OF ZERO FLOW 0.1 feet Gage Height EXTREME FOR PERIOD OF RECORD 7,500 cfs | 8.20 feet | 09/08/2014 FCDMC Annual Surface Water Report, Water Year 2021 Page 661 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 662 WY2021 Events Date of Peak 08/17/2021 09/02/2021 Peak Gage Height (feet) 1.19 0.34 Peak Discharge (cfs) 347 118 Hydrograph of peak WY 2021 flow event, 08/17/2021 Flood Flow Frequency Flood Flow Frequency N=21, HEC-WRC computation (based on 21 years of data) 2-year 5-year 10-year 20-year 50-year 100-year 563 1,710 3,020 4,780 7,980 11,200 NOTE: These results are based on limited data. FCDMC Annual Surface Water Report, Water Year 2021 Page 663 Rainbow Wash, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 4 3 4 5 --6 7 8 9 10 11 12 13 14 15 16 17 20 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 20 4 MEAN 0 0 0 0 0 0 0 0 0 0 1 0 MAX 0 0 0 0 0 0 0 0 0 0 347 118 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 0 40 8 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 24 MEAN 0 MAX 347 MIN 0 AC_FT 48 FCDMC Annual Surface Water Report, Water Year 2021 Page 664 Rawhide Wash, ID #61007 Site Data LOCATION On Dynamite Boulevard about 1/4 mile west of Pima Road DRAINAGE AREA 9.2 mi2 STREAM TYPE Natural stream JURISDICTION Scottsdale, Arizona WATERSHED Upper Indian Bend SECTION/TOWNSHIP/RANGE S36 T5N R4E LATITUDE N 33° 44' 28.1" | +33.74115 LONGITUDE W 111° 53' 53.3" | -111.89814 STREAMGAGE INSTALLATION DATE 07/27/1999 - WY 1999 AVAILABLE PERIOD OF RECORD (POR) 07/27/1999 - Current LENGTH OF AVAILABLE POR DATA 22.18 Years | 8,102 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.52 feet Gage Height STAFF GAGES 1 CREST STAGE GAGES 1 ZERO GAGE HEIGHT ELEVATION 2,220.14 feet NAVD88 POINT OF ZERO FLOW 0.0 feet Gage Height EXTREME FOR PERIOD OF RECORD 446 cfs | 2.07 feet | 09/09/2006 FCDMC Annual Surface Water Report, Water Year 2021 Page 665 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 666 WY2021 Events Date of Peak Peak Gage Height Peak Discharge (cfs) 08/13/2021 0.66 42 Hydrograph of peak WY 2021 flow event, 08/13/2021 Flood Flow Frequency There is not enough data to compute a flood flow frequency for this gage station. FCDMC Annual Surface Water Report, Water Year 2021 Page 667 Rawhide Wash, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 1 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 1 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 42 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 0 2 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 1 MEAN 0 MAX 42 MIN 0 AC_FT 2 FCDMC Annual Surface Water Report, Water Year 2021 Page 668 Reata Pass Dam, ID #61207 Site Data LOCATION Located south of Dynamite Boulevard and east of Alma School Parkway DRAINAGE AREA 1.0 mi2 JURISDICTION Scottsdale, Arizona WATERSHED Upper Indian Bend SECTION/TOWNSHIP/RANGE S33 T5N R5E LATITUDE N 33° 44' 04.1" | +33.73446 LONGITUDE W 111° 50' 37.0" | -111.84362 STREAMGAGE INSTALLATION DATE 10/02/2001 - WY 2002 AVAILABLE PERIOD OF RECORD (POR) 10/02/2001 - Current LENGTH OF AVAILABLE POR DATA 20.00 Years | 7,304 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.15 feet Gage Height STAFF GAGES 0 ZERO GAGE HEIGHT ELEVATION 2,590.15 feet NAVD88 POINT OF ZERO FLOW 0.00 feet Gage Height SPILLWAY CREST ELEVATION 16.85 feet Gage Height TOP OF DAM ELEVATION 19.45 feet Gage Height FCDMC Annual Surface Water Report, Water Year 2021 Page 669 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 670 WY2021 Events Date of Peak 07/12/2021 07/14/2021 07/23/2021 08/13/2021 08/17/2021 08/18/2021 09/01/2021 Peak Gage Height (feet) 3.20 1.33 1.68 4.07 1.08 2.30 1.48 Peak Volume (ac-ft) 1.6 0.1 0.4 2.5 0.0 0.8 0.3 Hydrograph of peak 2021 impoundment event, 08/13/2021 FCDMC Annual Surface Water Report, Water Year 2021 Page 671 Percent Spillway Capacity 3.2 0.7 0.9 5.2 0.6 1.6 0.8 Reata Pass Dam, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 --1 2 3 4 5 6 7 8 9 10 11 12 4 13 5 14 6 15 16 17 18 5 19 20 21 22 23 1 24 25 26 27 --28 29 ----30 ----31 -----------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 5 16 1 MEAN 0 0 0 0 0 0 0 0 0 0 1 0 MAX 0 0 0 0 0 0 0 0 0 78 113 6 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 10 33 1 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 22 MEAN 0 MAX 113 MIN 0 AC_FT 44 FCDMC Annual Surface Water Report, Water Year 2021 Page 672 Reata Pass Dam, volume data Volume, in Acre-Feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 --2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 --28 29 ----30 ----31 -----------------------------------------------------------------------------------------MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 2 3 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0 MAX 3 MIN 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 673 Reata Pass Dam, stage data Depth, in feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 0.1 --0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.5 2 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 3 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 4 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 5 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 6 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 7 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 8 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 9 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 10 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 11 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 12 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.3 0.1 0.1 13 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.2 0.3 0.1 14 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.3 0.7 0.1 15 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 16 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.2 0.1 17 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.4 0.1 18 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.8 0.1 19 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.5 0.1 20 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 21 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 22 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 23 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.5 0.1 0.1 24 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.2 0.1 0.1 25 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 26 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.2 27 --0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 28 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 29 --0.1 0.1 0.1 --0.1 0.1 0.1 0.1 0.1 0.1 0.1 30 --0.1 0.1 0.1 --0.1 0.1 0.1 0.1 0.1 0.1 0.1 31 ----0.1 0.1 --0.1 --0.1 --0.1 0.2 -------------------------------------------------------------------------------MEAN 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.2 0.2 0.2 MAX 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 3.2 4.1 1.5 MIN 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0.16 MAX 4.07 MIN 0.15 FCDMC Annual Surface Water Report, Water Year 2021 Page 674 Reata Pass Wash – ID #60007 Site Data LOCATION Located on Pinnacle Peak Road about 1.6 miles east of Pima Road DRAINAGE AREA 7.9 mi2 STREAM TYPE Natural stream JURISDICTION Scottsdale, Arizona WATERSHED Upper Indian Bend SECTION/TOWNSHIP/RANGE S17 T4N R5E LATITUDE N 33° 41' 52.9" | +33.69804 LONGITUDE W 111° 51' 50.6" | -111.86408 STREAMGAGE INSTALLATION DATE 05/15/2001 - WY 2001 AVAILABLE PERIOD OF RECORD (POR) 05/15/2001 - Current LENGTH OF AVAILABLE POR DATA 20.38 Years | 7,444 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.30 feet Gage Height ZERO GAGE HEIGHT ELEVATION 2,172.78 feet NAVD88 POINT OF ZERO FLOW 0.0 feet Gage Height EXTREME FOR PERIOD OF RECORD 1,197 cfs | 2.08 feet | 09/08/2014 EXTREME OUTSIDE PERIOD OF RECORD 1,780 cfs | 08/29/1996 FCDMC Annual Surface Water Report, Water Year 2021 Page 675 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 676 WY2021 Events Date of Peak Peak Gage Height (feet) Peak Discharge (cfs) 08/13/2021 0.82 2 Hydrograph of peak WY 2021 flow event, 08/13/2021 Flood Flow Frequency Flood Flow Frequency N=21, HEC-WRC computation (based on 21 years of data) 2-year 5-year 10-year 20-year 50-year 100-year 86 584 1,410 2,720 5,310 7,990 FCDMC Annual Surface Water Report, Water Year 2021 Page 677 Reata Pass Wash, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 --6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 2 2 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 0 MEAN 0 MAX 2 MIN 0 AC_FT 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 678 Rittenhouse FRS, ID #37207 Site Data LOCATION East of town of Queen Creek in Pinal County DRAINAGE AREA 47.1 mi2 STREAM TYPE Dam of natural drainage JURISDICTION Pinal County WATERSHED Upper East Maricopa Floodway SECTION/TOWNSHIP/RANGE S02 T2S R8E LATITUDE N 33° 17' 20.3" | +33.28896 LONGITUDE W 111° 30' 23.7" | -111.50659 STREAMGAGE INSTALLATION DATE 09/27/1988 - WY 1988 AVAILABLE PERIOD OF RECORD (POR) 09/27/1988 - Current LENGTH OF AVAILABLE POR DATA 33.01 Years | 12,057 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.25 feet Gage Height STAFF GAGES 4 ZERO GAGE HEIGHT ELEVATION 1,578.97 feet NAVD88 POINT OF ZERO FLOW 0.00 feet Gage Height SPILLWAY ELEVATION 19.4 feet Gage Height TOP OF DAM ELEVATION 24.4 feet Gage Height FCDMC Annual Surface Water Report, Water Year 2021 Page 679 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 680 WY2021 Events Date of Peak 07/10/2021 07/23/2021 07/24/2021 07/25/2021 08/11/2021 08/14/2021 08/17/2021 Peak Gage Height (feet) 1.86 4.43 7.22 8.57 1.69 4.36 11.66 Peak Volume (ac-ft) 4.4 35.2 171.7 302.4 3.8 33.8 789.0 Hydrograph of peak 2021 impoundment event, 08/17/2021 FCDMC Annual Surface Water Report, Water Year 2021 Page 681 Percent Spillway Capacity 0.1 0.9 4.4 7.6 0.1 0.9 19.9 Rittenhouse FRS, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 3 11 3 12 13 14 21 15 16 1 17 108 18 102 19 81 20 7 21 22 1 23 33 24 43 25 86 26 59 27 1 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 228 323 0 MEAN 0 0 0 0 0 0 0 0 0 7 10 0 MAX 0 0 0 0 0 0 0 0 0 97 115 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 452 640 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 551 MEAN 2 MAX 115 MIN 0 AC_FT 1093 FCDMC Annual Surface Water Report, Water Year 2021 Page 682 Rittenhouse FRS, volume data Volume, in acre-feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 1 11 1 12 13 14 9 15 16 17 604 18 408 19 142 20 2 21 22 23 15 24 66 25 189 26 69 27 28 29 --30 --31 ---------------------------------------------------------------------------------------MEAN 0 0 0 0 0 0 0 0 0 11 38 0 MAX 0 0 0 0 0 0 0 0 0 302 789 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 4 MAX 789 MIN 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 683 Rittenhouse FRS, stage data Depth, in feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 3 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 4 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 5 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 6 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 7 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 8 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 9 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 10 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.6 0.2 0.2 11 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.5 0.2 12 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 13 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 14 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 1.8 0.2 15 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 16 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.3 0.2 17 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 10.5 0.2 18 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 9.4 0.2 19 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 6.5 0.2 20 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.8 0.2 21 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.3 0.2 0.2 22 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.3 0.2 0.2 23 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 2.6 0.2 0.2 24 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 3.6 0.2 0.2 25 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 7.2 0.2 0.2 26 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 4.7 0.2 0.2 27 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.3 0.2 0.2 28 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 29 0.2 0.2 0.2 0.2 --0.2 0.2 0.2 0.2 0.2 0.2 0.2 30 0.2 0.2 0.2 0.2 --0.2 0.2 0.2 0.2 0.2 0.2 0.2 31 0.2 --0.2 0.2 --0.2 --0.2 --0.2 0.2 -------------------------------------------------------------------------------MEAN 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.8 1.2 0.2 MAX 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 8.6 11.7 0.2 MIN 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0.38 MAX 11.66 MIN 0.25 FCDMC Annual Surface Water Report, Water Year 2021 Page 684 Roeser Road at 23rd Avenue Basin, ID #66807 Site Data LOCATION Located on the basin at the northeast corner of Roeser Rd and 23rd Avenue DRAINAGE AREA Undetermined STREAM TYPE Flood control basin JURISDICTION Phoenix, Arizona WATERSHED South Mountain SECTION/TOWNSHIP/RANGE S25 T1N R2E LATITUDE N 33° 23' 58.9" | +33.39968 LONGITUDE W 112° 09' 02.5" | -112.15070 STREAMGAGE INSTALLATION DATE 10/01/2015 - WY 2016 AVAILABLE PERIOD OF RECORD (POR) 10/01/2015 - Current LENGTH OF AVAILABLE POR DATA 6.00 Years | 2,192 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.20 feet Gage Height STAFF GAGES 0 ZERO GAGE HEIGHT ELEVATION 1,045.76 feet NAVD88 POINT OF ZERO FLOW 0.00 feet Gage Height SPILLWAY CREST ELEVATION No spillway TOP OF BASIN ELEVATION 10.5 feet Gage Height FCDMC Annual Surface Water Report, Water Year 2021 Page 685 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 686 WY2021 Events Date of Peak 12/10/2020 01/23/2021 01/24/2021 01/25/2021 01/29/2021 03/12/2021 07/03/2021 07/14/2021 07/23/2021 07/24/2021 07/25/2021 08/10/2021 08/14/2021 08/16/2021 08/17/2021 09/01/2021 09/18/2021 Peak Gage Height (feet) 1.92 1.12 0.62 1.02 0.85 0.50 1.35 2.39 0.87 1.05 1.87 0.67 3.32 1.52 0.50 1.72 0.52 Peak Volume (ac-ft) 21.8 12.7 7.1 11.6 9.7 5.7 15.3 27.1 9.9 12.0 21.2 7.6 37.7 17.2 5.7 19.5 5.9 Hydrograph of peak 2021 impoundment event, 08/14/2021 FCDMC Annual Surface Water Report, Water Year 2021 Page 687 Percent Spillway Capacity 15.9 9.4 5.2 8.6 7.1 4.2 11.3 19.9 7.3 8.8 15.5 5.6 27.7 12.7 4.2 14.3 4.4 Roeser Road at 23rd Avenue Basin, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 0 MEAN 0 MAX 0 MIN 0 AC_FT 0 NOTE: There is currently no discharge rating at this location. FCDMC Annual Surface Water Report, Water Year 2021 Page 688 Roeser Road at 23rd Avenue Basin, volume data Volume, in acre-feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 1 2 3 1 1 4 5 1 6 7 8 9 10 3 11 12 13 1 1 14 3 4 15 16 1 17 18 19 20 21 22 23 1 2 24 1 1 25 1 1 26 1 27 28 29 1 --30 --31 ---------------------------------------------------------------------------------------MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 3 0 22 13 4 7 0 3 0 27 38 20 MIN 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0 MAX 38 MIN 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 689 Roeser Road at 23rd Avenue Basin, stage data Depth, in feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.3 2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 3 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.3 0.2 0.2 4 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 5 0.2 0.2 0.2 0.2 0.3 0.2 0.2 0.2 0.2 0.2 0.2 0.2 6 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 7 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 8 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 9 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 10 0.2 0.2 0.4 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 11 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 12 0.2 0.2 0.2 0.2 0.2 0.3 0.2 0.2 0.2 0.2 0.2 0.2 13 0.2 0.2 0.2 0.2 0.2 0.3 0.2 0.2 0.2 0.2 0.3 0.2 14 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.4 0.5 0.2 15 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 16 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.3 0.2 17 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 18 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 19 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 20 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 21 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 22 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 23 0.2 0.2 0.2 0.3 0.2 0.2 0.2 0.2 0.2 0.3 0.2 0.2 24 0.2 0.2 0.2 0.3 0.2 0.2 0.2 0.2 0.2 0.3 0.2 0.2 25 0.2 0.2 0.2 0.3 0.2 0.2 0.2 0.2 0.2 0.3 0.2 0.2 26 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 27 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 28 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 29 0.2 0.2 0.2 0.3 --0.2 0.2 0.2 0.2 0.2 0.2 0.2 30 0.2 0.2 0.2 0.2 --0.2 0.2 0.2 0.2 0.2 0.2 0.2 31 0.2 --0.2 0.2 --0.2 --0.2 --0.2 0.2 -------------------------------------------------------------------------------MEAN 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 MAX 0.2 0.2 1.9 1.1 0.3 0.7 0.2 0.2 0.2 2.4 3.3 1.7 MIN 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0.23 MAX 3.32 MIN 0.23 FCDMC Annual Surface Water Report, Water Year 2021 Page 690 Saddleback FRS, ID #25207 Site Data LOCATION Located south of I-10 along Courthouse Road DRAINAGE AREA 29.6 mi2 STREAM TYPE Dam of natural drainage JURISDICTION Maricopa County, Arizona WATERSHED Lower Centennial SECTION/TOWNSHIP/RANGE S34 T2N R8W LATITUDE N 33° 27' 59.8" | +33.46660 LONGITUDE W 113° 04' 21.3" | -113.07258 STREAMGAGE INSTALLATION DATE 12/16/1988 - WY 1989 AVAILABLE PERIOD OF RECORD (POR) 12/16/1988 - Current LENGTH OF AVAILABLE POR DATA 32.79 Years | 11,977 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.30 feet Gage Height STAFF GAGES 3 CREST STAGE GAGES 0 ZERO GAGE HEIGHT ELEVATION 1,178.93 feet NAVD88 POINT OF ZERO FLOW 0.00 feet Gage Height SPILLWAY ELEVATION No Spillway TOP OF DAM ELEVATION 16.1 feet Gage Height FCDMC Annual Surface Water Report, Water Year 2021 Page 691 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 692 WY2021 Events Date of Peak Peak Gage Height (feet) Peak Volume (ac-ft) Percent Total Capacity 07/30/2021 0.41 42.7 0.1 Hydrograph of peak 2021 impoundment event, 07/30/2021 FCDMC Annual Surface Water Report, Water Year 2021 Page 693 Saddleback FRS, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 --15 --16 17 --18 --19 --20 --21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 0 MEAN 0 MAX 0 MIN 0 AC_FT 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 694 Saddleback FRS, volume data Volume, in acre feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 --15 --16 17 --18 --19 --20 --21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 43 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0 MAX 43 MIN 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 695 Saddleback FRS, stage data Depth, in feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 2 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 4 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 5 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 6 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 7 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 8 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 9 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 10 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 11 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 12 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 13 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 14 0.3 0.3 0.3 0.3 0.3 0.3 --0.3 0.3 0.3 0.3 0.3 15 0.3 0.3 0.3 0.3 0.3 0.3 --0.3 0.3 0.3 0.3 0.3 16 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 17 0.3 0.3 0.3 0.3 0.3 0.3 --0.3 0.3 0.3 0.3 0.3 18 0.3 0.3 0.3 0.3 0.3 0.3 --0.3 0.3 0.3 0.3 0.3 19 0.3 0.3 0.3 0.3 0.3 0.3 --0.3 0.3 0.3 0.3 0.3 20 0.3 0.3 0.3 0.3 0.3 0.3 --0.3 0.3 0.3 0.3 0.3 21 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 22 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 23 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 24 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 25 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 26 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 27 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 28 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 29 0.3 0.3 0.3 0.3 --0.3 0.3 0.3 0.3 0.3 0.3 0.3 30 0.3 0.3 0.3 0.3 --0.3 0.3 0.3 0.3 0.3 0.3 0.3 31 0.3 --0.3 0.3 --0.3 --0.3 --0.3 0.3 -------------------------------------------------------------------------------MEAN 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 MAX 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.4 0.3 0.3 MIN 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0.30 MAX 0.41 MIN 0.30 FCDMC Annual Surface Water Report, Water Year 2021 Page 696 Salt River below Granite Reef Dam, ID #75307 Site Data LOCATION Located about 1/2 mile downstream from Granite Reef Diversion structure DRAINAGE AREA 12,919 mi2 STREAM TYPE Natural Stream JURISDICTION Salt River Pima-Maricopa Indian Community, Arizona WATERSHED Lower Verde / Evergreen SECTION/TOWNSHIP/RANGE S13 T2N R6E LATITUDE N 33° 30' 53.5" | +33.5147 LONGITUDE W 111° 41' 56.4" | -111.6990 STREAMGAGE INSTALLATION DATE 04/02/2012 - WY 2012 AVAILABLE PERIOD OF RECORD (POR) 04/02/2012 - Current LENGTH OF AVAILABLE POR DATA 9.50 Years | 3,469 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 4.25 feet Gage Height ZERO GAGE HEIGHT ELEVATION 1,276.00 feet NAVD88 POINT OF ZERO FLOW Undetermined EXTREME FOR PERIOD OF RECORD 22,641 cfs | 16.32 feet | 03/01/2017 FCDMC Annual Surface Water Report, Water Year 2021 Page 697 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 698 WY2021 Events Date of Peak 07/26/2021 08/11/2021 08/12/2021 08/12/2021 08/14/2021 08/18/2021 Peak Gage Height (feet) 7.32 7.52 10.84 8.64 9.38 10.45 Peak Discharge (cfs) 543 624 3,763 1,262 1,895 3,205 Hydrograph of peak WY 2021 flow event, 08/12/2021 Flood Flow Frequency There is not enough data to compute a flood flow frequency for this gage station. FCDMC Annual Surface Water Report, Water Year 2021 Page 699 Salt River below Granite Reef Dam, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 --9 10 11 53 12 1283 13 472 14 763 15 145 16 17 18 299 19 816 20 21 22 23 --24 25 121 26 320 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 381 3831 0 MEAN 0 0 0 0 0 0 0 0 0 12 124 0 MAX 0 0 0 0 0 0 0 0 0 543 3763 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 755 7598 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 4212 MEAN 12 MAX 3763 MIN 0 AC_FT 8354 FCDMC Annual Surface Water Report, Water Year 2021 Page 700 Salt River at Val Vista Drive, ID #39507 Site Data LOCATION Located north of SR202L and west of Val Vista Drive DRAINAGE AREA 12,951 mi2 STREAM TYPE Natural Stream JURISDICTION Mesa, Arizona WATERSHED Lower EMF / Evergreen SECTION/TOWNSHIP/RANGE S29 T2N R6E LATITUDE N 33° 29' 03.3" | +33.48426 LONGITUDE W 111° 45' 44.1" | -111.76225 STREAMGAGE INSTALLATION DATE 04/14/2011 - WY 2011 AVAILABLE PERIOD OF RECORD (POR) 04/14/2011 - Current LENGTH OF AVAILABLE POR DATA 10.47 Years | 3,823 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.40 feet Gage Height ZERO GAGE HEIGHT ELEVATION 1,240.00 feet NAVD88 POINT OF ZERO FLOW 0.0 feet Gage Height EXTREME FOR PERIOD OF RECORD 21,048 cfs | 10.76 feet | 03/01/2017 FCDMC Annual Surface Water Report, Water Year 2021 Page 701 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 702 WY2021 Events Date of Peak 08/12/2021 08/14/2021 08/19/2021 Peak Gage Height 4.26 3.46 3.69 Peak Discharge (cfs) 2,109 731 1,077 Hydrograph of peak WY 2021 flow event, 08/12/2021 Flood Flow Frequency There is not enough data to compute a flood flow frequency for this gage station. FCDMC Annual Surface Water Report, Water Year 2021 Page 703 Salt River at Val Vista Drive, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 367 13 34 14 123 15 16 17 18 19 84 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 608 0 MEAN 0 0 0 0 0 0 0 0 0 0 20 0 MAX 0 0 0 0 0 0 0 0 0 0 2109 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 0 1207 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 608 MEAN 2 MAX 2109 MIN 0 AC_FT 1207 FCDMC Annual Surface Water Report, Water Year 2021 Page 704 Salt River at Priest Drive, ID #67307 Site Data LOCATION Located on the Priest Drive Bridge DRAINAGE AREA 13,223 mi2 STREAM TYPE Channelized Natural Stream JURISDICTION Tempe, Arizona WATERSHED Lower ACDC / South Mountain SECTION/TOWNSHIP/RANGE S17 T1N R4E LATITUDE N 33° 26' 02.4" | +33.43401 LONGITUDE W 111° 57' 40.7" | -111.96132 STREAMGAGE INSTALLATION DATE 12/07/1993 - WY 1994 AVAILABLE PERIOD OF RECORD (POR) 12/07/1993 - Current LENGTH OF AVAILABLE POR DATA 27.82 Years | 10,160 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 2.60 feet Gage Height ZERO GAGE HEIGHT ELEVATION 1,121.81 feet NAVD88 POINT OF ZERO FLOW 2.0 feet Gage Height EXTREME FOR PERIOD OF RECORD 78,850 cfs | 12.57 feet | 02/16/1995 FCDMC Annual Surface Water Report, Water Year 2021 Page 705 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 706 WY2021 Events Date of Peak 07/23/2021 07/23/2021 07/24/2021 07/25/2021 08/19/2021 Peak Gage Height 5.78 6.18 4.54 4.12 4.45 Peak Discharge (cfs) 3,621 5,057 570 85 446 Hydrograph of peak WY 2021 flow event, 07/23/2021 Flood Flow Frequency Flood Flow Frequency Source: Table 2-4 from Study from Modified Roosevelt Dam 2-year 5-year 10-year 20-year 50-year 100-year n/a 20,500 55,000 90,000 140,000 169,000 FCDMC Annual Surface Water Report, Water Year 2021 Page 707 Salt River at Priest Drive, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 113 20 91 21 22 23 769 24 250 25 12 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 1031 203 0 MEAN 0 0 0 0 0 0 0 0 0 33 7 0 MAX 0 0 0 0 0 0 0 0 0 5057 446 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 2045 403 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 1234 MEAN 3 MAX 5057 MIN 0 AC_FT 2448 See USGS Water-Data Report for official data for this site. FCDMC Annual Surface Water Report, Water Year 2021 Page 708 Salt River at 7th Avenue, ID #68007 Site Data LOCATION Located on the 7th Avenue Bridge DRAINAGE AREA 13,223 mi2 STREAM TYPE Channelized Natural Stream JURISDICTION Phoenix, Arizona WATERSHED Lower ACDC / South Mountain SECTION/TOWNSHIP/RANGE S19 T1N R3E LATITUDE N 33° 25' 03.1" | +33.41752 LONGITUDE W 112° 04' 57.4" | -112.08262 STREAMGAGE INSTALLATION DATE 01/25/2012 - WY 2012 AVAILABLE PERIOD OF RECORD (POR) 01/25/2012 - Current LENGTH OF AVAILABLE POR DATA DATA 9.68 Years | 3,537 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.00 feet Gage Height ZERO GAGE HEIGHT ELEVATION 1,027.76 feet NAVD88 POINT OF ZERO FLOW Undetermined EXTREME FOR PERIOD OF RECORD 12.27 feet | 12,712 cfs | 03/01/2017 FCDMC Annual Surface Water Report, Water Year 2021 Page 709 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 710 WY2021 Events Date of Peak 07/23/2021 07/23/2021 08/14/2021 Peak Gage Height 5.11 6.57 6.14 Peak Discharge (cfs) 126 1,626 696 Hydrograph of peak WY 2021 flow event, 07/23/2021 Flood Flow Frequency There is not enough data to compute a flood flow frequency for this gage station. FCDMC Annual Surface Water Report, Water Year 2021 Page 711 Salt River at 7th Avenue, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 5 --2 2 2 7 3 12 15 18 6 8 2 5 2 2 2 2 5 2 12 16 16 3 27 3 4 2 2 2 2 5 2 13 16 19 3 9 4 3 2 3 2 2 5 2 13 15 25 3 6 5 3 2 7 2 2 4 2 13 16 17 2 3 6 5 2 9 2 2 3 2 13 17 12 2 2 7 6 2 9 2 2 3 2 14 15 10 2 2 8 5 2 5 2 2 3 2 14 15 12 3 2 9 3 2 3 2 2 2 3 15 15 14 3 2 10 4 2 20 2 2 2 5 17 13 9 6 4 11 4 2 9 2 2 2 9 14 12 9 6 3 12 3 2 5 2 3 6 9 13 14 12 11 5 13 2 2 2 2 4 10 10 12 15 12 14 4 14 2 2 3 2 6 6 8 11 16 25 85 3 15 2 2 2 4 8 5 5 12 14 13 14 3 16 5 2 2 5 7 4 4 15 10 5 18 2 17 5 2 2 5 7 3 7 14 15 3 35 2 18 5 2 3 5 5 2 11 13 17 5 28 5 19 5 2 4 3 3 3 11 13 17 4 24 4 20 4 2 3 2 3 3 9 14 18 6 48 3 21 3 2 2 2 6 3 10 15 17 5 24 3 22 --2 2 2 10 5 11 14 17 3 11 2 23 5 2 2 2 10 6 12 15 15 162 4 2 24 6 2 2 8 10 8 13 15 16 76 2 3 25 3 2 2 16 5 8 14 15 16 46 2 4 26 3 2 2 12 4 8 14 14 13 33 3 6 27 2 2 2 4 5 9 12 14 15 12 3 6 28 2 2 2 3 7 9 12 15 14 4 3 4 29 --2 2 4 --8 11 13 13 4 4 2 30 --2 2 7 --7 11 13 15 3 4 2 31 2 --2 3 --5 --15 --17 4 -------------------------------------------------------------------------------TOTAL 115 57 123 121 131 161 228 425 452 612 382 135 MEAN 4 2 4 4 5 5 8 14 15 20 12 4 MAX 6 2 43 34 12 14 15 17 20 1626 696 36 MIN 2 2 2 2 2 2 2 11 9 3 2 2 AC_FT 228 114 245 239 259 320 452 843 897 1214 758 267 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 2943 MEAN 8 MAX 1626 MIN 2 AC_FT 5836 FCDMC Annual Surface Water Report, Water Year 2021 Page 712 Salt River at 51st Avenue, ID #5307 Site Data LOCATION Located at the 51st Avenue crossing of the Salt River DRAINAGE AREA 13,425 mi2 STREAM TYPE Channelized Natural Stream JURISDICTION Phoenix, Arizona WATERSHED Lower ACDC SECTION/TOWNSHIP/RANGE S29 T1N R2E LATITUDE N 33° 24' 15.7" | +33.40435 LONGITUDE W 112° 10' 07.4" | -112.16871 STREAMGAGE INSTALLATION DATE 04/27/2011 - WY 2011 AVAILABLE PERIOD OF RECORD (POR) 04/27/2011 - Current LENGTH OF AVAILABLE POR DATA DATA 10.43 Years | 3,810 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 1.90 feet Gage Height ZERO GAGE HEIGHT ELEVATION 986.89 feet NAVD88 POINT OF ZERO FLOW 1.5 feet Gage Height EXTREME FOR PERIOD OF RECORD 11,376 cfs | 10.50 feet GH | 03/01/2017 FCDMC Annual Surface Water Report, Water Year 2021 Page 713 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 714 WY2021 Events Date of Peak 12/10/2020 07/25/2021 08/14/2021 Peak Gage Height 5.10 2.80 3.99 Peak Discharge (cfs) 974 113 404 Hydrograph of peak WY 2021 flow event, 12/10/2020 Flood Flow Frequency There is not enough data to compute a flood flow frequency for this gage station. FCDMC Annual Surface Water Report, Water Year 2021 Page 715 Salt River at 51st Avenue, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 25 24 27 2 6 6 26 24 29 3 11 23 26 23 25 4 11 23 28 23 23 5 11 23 22 23 --6 14 23 19 24 --7 19 23 15 24 22 8 16 23 24 24 22 9 20 23 19 25 25 10 206 19 22 15 24 25 11 204 25 22 16 21 25 12 39 24 21 16 19 21 13 2 31 22 16 18 20 14 34 21 22 100 23 15 26 21 17 22 25 16 11 21 19 24 25 17 11 22 20 --27 18 12 21 20 --28 19 14 21 --18 27 20 15 22 --23 27 21 20 22 --28 26 22 16 21 18 28 26 23 15 22 25 28 27 24 --22 19 25 24 24 25 19 10 37 24 15 26 23 14 23 25 14 27 26 24 23 25 14 28 24 24 17 18 16 29 --43 25 17 17 24 30 --25 17 19 22 31 --------28 26 -------------------------------------------------------------------------------TOTAL 0 0 450 0 0 538 0 0 611 657 795 689 MEAN 0 0 15 0 0 17 0 0 20 21 26 23 MAX 0 0 974 0 0 67 0 0 25 113 404 40 MIN 0 0 0 0 0 0 0 0 0 13 17 0 AC_FT 0 0 893 0 0 1068 0 0 1212 1304 1578 1367 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 3742 MEAN 10 MAX 974 MIN 0 AC_FT 7422 FCDMC Annual Surface Water Report, Water Year 2021 Page 716 Salt River at 67th Avenue, ID #5807 Site Data LOCATION Located at the 67th Avenue crossing of the Salt River DRAINAGE AREA 13,434 mi2 STREAM TYPE Culvert in Channelized Natural Stream JURISDICTION Maricopa County, Arizona WATERSHED Salt SECTION/TOWNSHIP/RANGE S30 T1N R2E LATITUDE N 33° 23' 51.8" | +33.39773 LONGITUDE W 112° 12' 12.6" | -112.20351 STREAMGAGE INSTALLATION DATE 07/14/2008 - WY 2008 AVAILABLE PERIOD OF RECORD (POR) 07/14/2008 - Current LENGTH OF AVAILABLE POR DATA 13.22 Years | 4,827 Days DATA GAPS IN POR None STAGE GAGE ELEVATION -0.35 feet Gage Height ZERO GAGE HEIGHT ELEVATION 975.21 feet NAVD88 POINT OF ZERO FLOW 0.00 feet Gage Height EXTREME FOR PERIOD OF RECORD 17,847 cfs | 9.43 feet GH | 01/22/2010 FCDMC Annual Surface Water Report, Water Year 2021 Page 717 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 718 WY2021 Events Date of Peak Peak Gage Height Peak Discharge (cfs) 08/14/2021 1.68 81 Hydrograph of peak WY 2021 flow event, 08/14/2021 Flood Flow Frequency There is not enough data to compute a flood flow frequency for this gage station. FCDMC Annual Surface Water Report, Water Year 2021 Page 719 Salt River at 67th Avenue, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 25 24 27 2 6 6 26 24 29 3 11 23 26 23 25 4 11 23 28 23 23 5 11 23 22 23 --6 14 23 19 24 --7 19 23 15 24 22 8 16 23 24 24 22 9 20 23 19 25 25 10 206 19 22 15 24 25 11 204 25 22 16 21 25 12 39 24 21 16 19 21 13 2 31 22 16 18 20 14 34 21 22 100 23 15 26 21 17 22 25 16 11 21 19 24 25 17 11 22 20 --27 18 12 21 20 --28 19 14 21 --18 27 20 15 22 --23 27 21 20 22 --28 26 22 16 21 18 28 26 23 15 22 25 28 27 24 --22 19 25 24 24 25 19 10 37 24 15 26 23 14 23 25 14 27 26 24 23 25 14 28 24 24 17 18 16 29 --43 25 17 17 24 30 --25 17 19 22 31 --------28 26 -------------------------------------------------------------------------------TOTAL 0 0 450 0 0 538 0 0 611 657 795 689 MEAN 0 0 15 0 0 17 0 0 20 21 26 23 MAX 0 0 974 0 0 67 0 0 25 113 404 40 MIN 0 0 0 0 0 0 0 0 0 13 17 0 AC_FT 0 0 893 0 0 1068 0 0 1212 1304 1578 1367 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 3742 MEAN 10 MAX 974 MIN 0 AC_FT 7422 FCDMC Annual Surface Water Report, Water Year 2021 Page 720 Sand Tank Wash at I-8, ID #40007 Site Data LOCATION Located in Gila Bend along I-8 DRAINAGE AREA 185 mi2 STREAM TYPE Natural Stream JURISDICTION Gila Bend, Arizona WATERSHED Gila Bend SECTION/TOWNSHIP/RANGE S06 T6S R4W LATITUDE N 32° 55' 59.1" | +32.93310 LONGITUDE W 112° 42' 20.8" | -112.70579 STREAMGAGE INSTALLATION DATE 05/31/2001 - WY 2001 AVAILABLE PERIOD OF RECORD (POR) 05/31/2001 - Current LENGTH OF AVAILABLE POR DATA 20.34 Years | 7,428 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 1.30 feet Gage Height STAFF GAGES 0 CREST STAGE GAGES 1 ZERO GAGE HEIGHT ELEVATION 760.54 feet NAVD88 POINT OF ZERO FLOW 0.0 feet Gage Height EXTREME FOR PERIOD OF RECORD ≈14,000 cfs | 7.69 feet | 08/14/2021 FCDMC Annual Surface Water Report, Water Year 2021 Page 721 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 722 WY2021 Events Date of Peak Peak Gage Height (feet) Peak Discharge (cfs) 08/14/2021 7.69 14,000 Hydrograph of peak WY 2021 flow event, 08/14/2021 NOTE: The hydrograph displays what the transducer was able to read before being buried by a significant amound of sand. A follow up post-event estimation put the approximate discharge at 14,000 cfs. Flood Flow Frequency Flood Flow Frequency N=22, HEC-WRC computation (based on 22 years of data) 2-year 5-year 10-year 20-year 50-year 100-year 670 1,740 2,930 4,590 7,710 11,000 NOTE: These results are based on very limited data. NOTE(2): The table above is based on an HEC-WRC analysis of avaible data, which is limited to 22 years. The FEMA estimated 100year discharge is 23,000 cfs. Use of a plot comparison of the data indicated that the August 14, 2021 event at 14,000 cfs had an approximate return period of 60 years. FCDMC Annual Surface Water Report, Water Year 2021 Page 723 Sand Tank Wash at I-8, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 574 15 16 17 --18 --19 20 21 22 23 24 25 --26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 574 0 MEAN 0 0 0 0 0 0 0 0 0 0 19 0 MAX 0 0 0 0 0 0 0 0 0 0 --0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 0 1138 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 574 MEAN 2 MAX --- MIN 0 AC_FT 1138 FCDMC Annual Surface Water Report, Water Year 2021 Page 724 Santa Cruz River at SR84, ID #63807 Site Data LOCATION On SR 84 about 5 miles west of Casa Grande DRAINAGE AREA 78.8 mi2 STREAM TYPE Channelized Natural Stream JURISDICTION Pinal County, Arizona WATERSHED Santa Cruz SECTION/TOWNSHIP/RANGE S21 T6S R5E LATITUDE N 32° 52' 46.3" | +32.87952 LONGITUDE W 111° 49' 44.2" | -111.82895 STREAMGAGE INSTALLATION DATE 03/16/1994 - WY 1994 AVAILABLE PERIOD OF RECORD (POR) 03/16/1994 - Current LENGTH OF AVAILABLE POR DATA 27.55 Years | 10,061 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.00 feet Gage Height ZERO GAGE HEIGHT ELEVATION 1,346.06 feet NAVD88 POINT OF ZERO FLOW -1.3 feet Gage Height EXTREME FOR PERIOD OF RECORD 1,736 cfs | 4.38 feet | 08/02/2006 FCDMC Annual Surface Water Report, Water Year 2021 Page 725 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 726 WY2021 Events Date of Peak 07/25/2021 07/27/2021 08/14/2021 08/19/2021 Peak Gage Height 0.62 2.16 0.84 1.27 Peak Discharge (cfs) 14 165 22 38 Hydrograph of peak WY 2021 flow event, 07/27/2021 Flood Flow Frequency Flood Flow Frequency N=28, HEC-WRC computation (based on 28 years of data) 2-year 5-year 10-year 20-year 50-year 100-year 102 282 488 777 1,330 1,910 FCDMC Annual Surface Water Report, Water Year 2021 Page 727 Santa Cruz River at SR84, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 11 15 2 16 8 17 24 18 25 19 34 20 16 21 22 23 24 25 3 26 9 27 102 28 61 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 174 118 0 MEAN 0 0 0 0 0 0 0 0 0 6 4 0 MAX 0 0 0 0 0 0 0 0 0 165 38 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 345 235 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 293 MEAN 1 MAX 165 MIN 0 AC_FT 580 FCDMC Annual Surface Water Report, Water Year 2021 Page 728 Sauceda Wash, ID #71007 Site Data LOCATION About 5 miles south of Gila Bend on SR 85 DRAINAGE AREA 126 mi2 STREAM TYPE Natural Stream JURISDICTION Maricopa County, Arizona WATERSHED Theba SECTION/TOWNSHIP/RANGE S27 T6S R5W LATITUDE N 32° 52' 49.6" | +32.88044 LONGITUDE W 112° 45' 15.4" | -112.75427 STREAMGAGE INSTALLATION DATE 02/28/1990 - WY 1990 AVAILABLE PERIOD OF RECORD (POR) 02/28/1990 - Current LENGTH OF AVAILABLE POR DATA 31.59 Years | 11,538 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 1.10 feet Gage Height STAFF GAGES 2 CREST STAGE GAGES 1 ZERO GAGE HEIGHT ELEVATION 841.47 feet NAVD88 POINT OF ZERO FLOW 1.0 feet Gage Height EXTREME FOR PERIOD OF RECORD 2,698 cfs | 5.70 feet GH | 08/13/2014 FCDMC Annual Surface Water Report, Water Year 2021 Page 729 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 730 WY2021 Events Date of Peak 08/14/2021 08/31/2021 Peak Gage Height (feet) 4.10 2.33 Peak Discharge (cfs) 1,396 334 Hydrograph of peak WY 2021 flow event, 08/14/2021 Flood Flow Frequency Flood Flow Frequency N=49, HEC-WRC computation (based on 49 years of data) 2-year 5-year 10-year 20-year 50-year 100-year 434 1,240 2,040 2,990 4,470 5,750 NOTE: These results are based on limited data. FCDMC Annual Surface Water Report, Water Year 2021 Page 731 Sauceda Wash, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 --6 7 8 9 10 11 12 13 14 171 15 --16 17 18 19 20 21 22 23 24 25 --26 27 28 --29 --30 --31 --------15 -------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 186 0 MEAN 0 0 0 0 0 0 0 0 0 0 6 0 MAX 0 0 0 0 0 0 0 0 0 0 1396 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 0 370 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 186 MEAN 1 MAX 1396 MIN 0 AC_FT 370 FCDMC Annual Surface Water Report, Water Year 2021 Page 732 Scatter Wash, ID #14007 Site Data LOCATION Located west of 35th Avenue on eastbound Beardsley Road DRAINAGE AREA 12.4 mi2 STREAM TYPE Channelized Natural Stream JURISDICTION Phoenix, Arizona WATERSHED Upper ACDC SECTION/TOWNSHIP/RANGE S27 T4N R2E LATITUDE N 33° 40' 08.2" | +33.66893 LONGITUDE W 112° 08' 29.8" | -112.14160 STREAMGAGE INSTALLATION DATE 09/18/1996 - WY 1996 AVAILABLE PERIOD OF RECORD (POR) 09/18/1996 - Current LENGTH OF AVAILABLE POR DATA 25.03 Years | 9,144 Days DATA GAPS IN POR 07/23/2008 - 11/18/2008 STAGE GAGE ELEVATION 0.00 feet Gage Height STAFF GAGES 1 CREST STAGE GAGES 0 ZERO GAGE HEIGHT ELEVATION 1,332.26 feet NAVD88 POINT OF ZERO FLOW 0.0 feet Gage Height EXTREME FOR PERIOD OF RECORD 1,784 cfs | 3.42 feet | 07/25/2007 FCDMC Annual Surface Water Report, Water Year 2021 Page 733 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 734 WY2021 Events Date of Peak 07/14/2021 07/22/2021 07/23/2021 07/25/2021 08/13/2021 08/17/2021 08/18/2021 09/26/2021 Peak Gage Height (feet) 0.67 0.87 0.97 0.90 2.29 1.10 0.65 0.62 Peak Discharge (cfs) 22 86 121 96 1,124 175 17 12 Hydrograph of peak WY 2021 flow event, 08/13/2021 Flood Flow Frequency Flood Flow Frequency N=25, HEC-WRC computation (based on 25 years of data) 2-year 5-year 10-year 20-year 50-year 100-year 558 1,010 1,300 1,550 1,830 2,010 NOTE(1): These results are based on very limited data. Flood Flow Frequency 1995 Flood Insurance Study 2-year 5-year 10-year 20-year 50-year 100-year 220 590 1,320 3,500 6,100 FCDMC Annual Surface Water Report, Water Year 2021 Page 735 Scatter Wash, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 1 11 12 13 52 14 1 68 15 16 17 7 18 2 19 20 21 22 3 23 6 24 25 1 12 26 1 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 1 1 0 0 0 0 0 23 129 1 MEAN 0 0 0 0 0 0 0 0 0 1 4 0 MAX 0 0 6 22 0 0 0 0 0 121 1124 12 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 1 2 0 0 0 0 0 45 256 2 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 154 MEAN 0 MAX 1124 MIN 0 AC_FT 306 FCDMC Annual Surface Water Report, Water Year 2021 Page 736 Seven Springs Wash, ID #21807 Site Data LOCATION On Seven Springs Road near Forest Road 254 DRAINAGE AREA 7.9 mi2 STREAM TYPE Natural Stream JURISDICTION Maricopa County WATERSHED Cave Creek SECTION/TOWNSHIP/RANGE S09 T7N R5E LATITUDE N 33° 57' 37.3" | +33.96035 LONGITUDE W 111° 50' 37.0" | -111.84361 STREAMGAGE INSTALLATION DATE 03/12/2002 - WY 2002 AVAILABLE PERIOD OF RECORD (POR) 03/12/2002 - Current LENGTH OF AVAILABLE POR DATA 19.56 Years | 7,143 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.60 feet Gage Height STAFF GAGES 0 CREST STAGE GAGES 1 ZERO GAGE HEIGHT ELEVATION 3,481.67 feet NAVD88 POINT OF ZERO FLOW 0.0 feet Gage Height EXTREME FOR PERIOD OF RECORD 11,700 cfs | 10.68 feet | 09/03/2005 FCDMC Annual Surface Water Report, Water Year 2021 Page 737 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 738 WY2021 Events Date of Peak 07/23/2021 07/25/2021 07/25/2021 08/18/2021 Peak Gage Height (feet) 1.30 0.87 1.57 5.06 Peak Discharge (cfs) 110 64 150 1,574 Hydrograph of peak WY 2021 flow event, 08/18/2021 Flood Flow Frequency Flood Flow Frequency N=20, HEC-WRC computation (based on 20 years of data) 2-year 5-year 10-year 20-year 50-year 100-year 321 1,550 3,380 6,310 12,400 19,300 NOTE: These results are based on very limited data. FCDMC Annual Surface Water Report, Water Year 2021 Page 739 Seven Springs Wash, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 89 19 20 21 22 23 13 24 25 12 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 25 89 0 MEAN 0 0 0 0 0 0 0 0 0 1 3 0 MAX 0 0 0 0 0 0 0 0 0 150 1574 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 49 176 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 114 MEAN 0 MAX 1574 MIN 0 AC_FT 225 FCDMC Annual Surface Water Report, Water Year 2021 Page 740 Signal Butte FRS, ID #79507 Site Data LOCATION Located north of Brown Road between Meridian and Signal Butte Roads DRAINAGE AREA 16.4 mi2 STREAM TYPE Dam of natural drainage JURISDICTION Mesa, Arizona WATERSHED Lower Verde SECTION/TOWNSHIP/RANGE S12 T1N R7E LATITUDE N 33° 26' 24.2" | +33.44005 LONGITUDE W 111° 35' 25.1" | -111.59031 STREAMGAGE INSTALLATION DATE 11/10/1987 - WY 1988 AVAILABLE PERIOD OF RECORD (POR) 11/10/1987 - Current LENGTH OF AVAILABLE POR DATA 33.89 Years | 12,379 Days DATA GAPS IN POR 02/09/2021 – 07/07/2021 STAGE GAGE ELEVATION -0.25 feet Gage Height STAFF GAGES 8 ZERO GAGE HEIGHT ELEVATION 1,687.54 feet NAVD88 POINT OF ZERO FLOW (GATED OUTLET) 0.0 feet Gage Height POINT OF ZERO FLOW (UNGATED OUTLET) 15.6 feet Gage Height SPILLWAY ELEVATION 26.8 feet Gage Height TOP OF DAM ELEVATION 37.0 feet Gage Height FCDMC Annual Surface Water Report, Water Year 2021 Page 741 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 742 WY2021 Events Percent Spillway Capacity Date of Peak Peak Gage Height (feet) Peak Volume (ac-ft) 07/25/2021 2.58 5.0 0.4 08/12/2021 6.55 56.0 3.5 08/13/2021 8.98 121.0 7.4 08/17/2021 9.43 128.0 7.8 NOTE: Station was removed for construction from February 9 – July 7, 2021. No events were missed. Hydrograph of peak 2021 impoundment event, 08/17/2021 FCDMC Annual Surface Water Report, Water Year 2021 Page 743 Signal Butte FRS, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 ----------2 ----------3 ----------4 ----------5 ----------6 ----------7 ----------8 --------9 ----------10 ----------11 ----------12 ----------13 ----------14 ----------15 ----------16 ----------17 ----------18 ----------19 ----------20 ----------21 ----------22 ----------23 ----------24 ----------25 ----------26 ----------27 ----------28 ----------29 ----------30 ----------31 -------------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 --------0 0 0 MEAN 0 0 0 0 0 --------0 0 0 MAX 0 0 0 0 0 --------0 0 0 MIN 0 0 0 0 0 --------0 0 0 AC_FT 0 0 0 0 0 --------0 0 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 0 MEAN 0 MAX 0 MIN 0 AC_FT 0 NOTE: Station removed for construction from February 8 – July 8, 2021. No events were missed. FCDMC Annual Surface Water Report, Water Year 2021 Page 744 Signal Butte FRS, volume data Volume, in acre feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 ----------9 2 ----------6 3 ----------5 4 ----------5 5 ----------3 6 ----------3 7 ----------2 8 --------9 ----------10 ----------11 ----------21 12 ----------45 13 ----------39 14 ----------115 15 ----------98 16 ----------81 17 ----------117 18 ----------98 19 ----------79 20 ----------66 21 ----------55 22 ----------47 23 ----------39 24 ----------1 33 25 ----------3 27 26 ----------1 22 27 ----------20 28 ----------18 29 ----------17 30 ----------15 31 ------------11 -------------------------------------------------------------------------------MEAN 0 0 0 0 0 --------0 34 1 MAX 0 0 0 0 0 --------5 128 11 MIN 0 0 0 0 0 --------0 0 0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 3 MAX 128 MIN 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 745 Signal Butte FRS, stage data Depth, in feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 -0.2 -0.2 -0.2 -0.2 -0.2 ----------- -0.2 3.1 2 -0.2 -0.2 -0.2 -0.2 -0.2 ----------- -0.2 2.7 3 -0.2 -0.2 -0.2 -0.2 -0.2 ----------- -0.2 2.6 4 -0.2 -0.2 -0.2 -0.2 -0.2 ----------- -0.2 2.5 5 -0.2 -0.2 -0.2 -0.2 -0.2 ----------- -0.2 2.3 6 -0.2 -0.2 -0.2 -0.2 -0.2 ----------- -0.2 2.2 7 -0.2 -0.2 -0.2 -0.2 -0.2 ----------- -0.2 1.9 8 -0.2 -0.2 -0.2 -0.2 -0.2 --------- -0.2 -0.2 0.5 9 -0.2 -0.2 -0.2 -0.2 ----------- -0.2 -0.2 -0.2 10 -0.2 -0.2 -0.2 -0.2 ----------- -0.2 -0.2 -0.2 11 -0.2 -0.2 -0.2 -0.2 ----------- -0.2 3.3 -0.2 12 -0.2 -0.2 -0.2 -0.2 ----------- -0.2 5.9 -0.2 13 -0.2 -0.2 -0.2 -0.2 ----------- -0.2 5.6 -0.2 14 -0.2 -0.2 -0.2 -0.2 ----------- -0.2 8.8 -0.2 15 -0.2 -0.2 -0.2 -0.2 ----------- -0.2 8.2 -0.2 16 0.0 -0.2 -0.2 -0.2 ----------- -0.2 7.6 -0.2 17 -0.2 -0.2 -0.2 -0.2 ----------- -0.2 8.8 -0.2 18 -0.2 -0.2 -0.2 -0.2 ----------- -0.2 8.2 -0.2 19 -0.2 -0.2 -0.2 -0.2 ----------- -0.2 7.6 -0.2 20 -0.2 -0.2 -0.2 -0.2 ----------- -0.2 7.0 -0.2 21 -0.2 -0.2 -0.2 -0.2 ----------- -0.2 6.5 -0.2 22 -0.2 -0.2 -0.2 -0.2 ----------- -0.2 6.0 -0.2 23 -0.2 -0.2 -0.2 -0.2 ----------- -0.2 5.6 -0.2 24 -0.2 -0.2 -0.2 -0.2 ----------1.1 5.2 -0.2 25 -0.2 -0.2 -0.2 -0.2 ----------2.1 4.8 -0.2 26 -0.2 -0.2 -0.2 -0.2 ----------1.0 4.4 -0.2 27 -0.2 -0.2 -0.2 -0.2 ----------- -0.2 4.2 -0.2 28 -0.2 -0.2 -0.2 -0.2 ----------- -0.2 4.1 -0.2 29 -0.2 -0.2 -0.2 -0.2 ----------- -0.2 3.9 -0.2 30 -0.2 -0.2 -0.2 -0.2 ----------- -0.2 3.7 -0.2 31 -0.2 --- -0.2 -0.2 ----------- -0.2 3.4 -------------------------------------------------------------------------------MEAN -0.2 -0.2 -0.2 -0.2 -0.2 --------- -0.0 3.9 0.4 MAX -0.2 -0.2 -0.2 -0.2 -0.2 --------2.6 9.2 3.4 MIN -0.2 -0.2 -0.2 -0.2 -0.2 --------- -0.2 -0.2 -0.2 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0.17 MAX 9.18 MIN -0.25 FCDMC Annual Surface Water Report, Water Year 2021 Page 746 Siphon Draw Wash at Signal Butte Road, ID #37607 Site Data LOCATION Located north of Elliot Road on Signal Butte Road DRAINAGE AREA 2.37 mi2 STREAM TYPE Natural Stream at a Culvert JURISDICTION Mesa, Arizona WATERSHED Upper East Maricopa Floodway SECTION/TOWNSHIP/RANGE S12 T1S R7E LATITUDE N 33° 21' 06.1" | +33.35169 LONGITUDE W 111° 36' 03.2" | -111.60090 STREAMGAGE INSTALLATION DATE 12/22/2016 - WY 2017 AVAILABLE PERIOD OF RECORD (POR) 12/22/2016 - Current LENGTH OF AVAILABLE POR DATA 4.77 Years | 1,744 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.65 feet Gage Height STAFF GAGES None CREST STAGE GAGES 1 ZERO GAGE HEIGHT ELEVATION 1,460.50 feet NAVD88 POINT OF ZERO FLOW 0.1 feet Gage Height EXTREME FOR PERIOD OF RECORD 312 cfs | 4.46 feet Gage Height | 07/24/2016 FCDMC Annual Surface Water Report, Water Year 2021 Page 747 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 748 WY2021 Events Date of Peak 07/25/2021 08/14/2021 08/17/2021 09/02/2021 Peak Gage Height 1.07 1.07 0.96 0.86 Peak Discharge (cfs) 24 24 17 12 Hydrograph of peak WY 2021 flow event, 08/14/2021 Flood Flow Frequency There is not enough data to compute a flood flow frequency for this gage station. FCDMC Annual Surface Water Report, Water Year 2021 Page 749 Siphon Draw Wash at Signal Butte Road, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 10 12 4 13 14 5 15 16 17 --2 18 19 --20 21 22 23 24 25 2 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 2 21 0 MEAN 0 0 0 0 0 0 0 0 0 0 1 0 MAX 0 0 0 0 0 0 0 0 0 24 24 12 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 3 42 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 23 MEAN 0 MAX 24 MIN 0 AC_FT 45 FCDMC Annual Surface Water Report, Water Year 2021 Page 750 Skunk Creek near New River, ID #66207 Site Data LOCATION Located south of the Fig Spring Road crossing of Skunk Creek DRAINAGE AREA 3.92 mi2 STREAM TYPE Natural Stream JURISDICTION Maricopa County, Arizona WATERSHED Skunk Creek SECTION/TOWNSHIP/RANGE S29 T7N R3E LATITUDE N 33° 55' 34.3" | +33.92619 LONGITUDE W 112° 04' 57.7" | -112.08268 STREAMGAGE INSTALLATION DATE 06/21/1995 - WY 1995 AVAILABLE PERIOD OF RECORD (POR) 06/21/1995 - Current LENGTH OF AVAILABLE POR DATA 26.28 Years | 9,599 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 1.45 feet Gage Height STAFF GAGES 0 CREST STAGE GAGES 1 ZERO GAGE HEIGHT ELEVATION 2,188.01 feet NAVD88 POINT OF ZERO FLOW 0.0 feet Gage Height EXTREME FOR PERIOD OF RECORD 3,021 cfs | 5.01 feet | 09/23/2019 FCDMC Annual Surface Water Report, Water Year 2021 Page 751 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 752 WY2021 Events Date of Peak Peak Gage Height (feet) Peak Discharge (cfs) 07/23/2021 2.29 395 Hydrograph of peak WY 2021 flow event, 07/23/2021 Flood Flow Frequency Flood Flow Frequency N=27, HEC-WRC computation (based on 27 years of data) 2-year 5-year 10-year 20-year 50-year 100-year 225 789 1,350 1,980 2,880 3,580 50-year 100-year 2,500 3,650 NOTE(1): These results are based on very limited data. Flood Flow Frequency FEMA 2-year 5-year 10-year 1,730 FCDMC Annual Surface Water Report, Water Year 2021 Page 753 20-year Skunk Creek near New River, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 --12 13 14 --15 16 --17 --18 19 20 21 22 23 9 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 9 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 395 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 18 0 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 9 MEAN 0 MAX 395 MIN 0 AC_FT 18 FCDMC Annual Surface Water Report, Water Year 2021 Page 754 Skunk Creek at Desert Hills Drive, ID #64807 Site Data LOCATION Located at approximately 15th Avenue and Desert Hills Drive DRAINAGE AREA 40.8 mi2 STREAM TYPE Natural Stream JURISDICTION Anthem, Arizona WATERSHED Skunk Creek SECTION/TOWNSHIP/RANGE S19 T6N R3E LATITUDE N 33° 50' 34.2" | +33.84283 LONGITUDE W 112° 05' 31.9" | -112.09221 STREAMGAGE INSTALLATION DATE 07/23/2015 - WY 2015 AVAILABLE PERIOD OF RECORD (POR) 07/23/2015 - Current LENGTH OF AVAILABLE POR DATA 6.19 Years | 2,262 Days DATA GAPS IN POR 07/23/2021 – 11/17/2021 STAGE GAGE ELEVATION 1.10 feet Gage Height STAFF GAGES None CREST STAGE GAGES 1 ZERO GAGE HEIGHT ELEVATION 1,847.67 feet NAVD88 POINT OF ZERO FLOW 0.5 feet Gage Height EXTREME FOR PERIOD OF RECORD 8,650 cfs | 9.45 feet GH | 07/23/2021 FCDMC Annual Surface Water Report, Water Year 2021 Page 755 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 756 WY2021 Events Date of Peak Peak Gage Height 07/23/2021 9.45 NOTE: Gage failed and was destroyed during the 07/23/2021 event. Peak Discharge (cfs) 8,650 Hydrograph of peak WY 2021 flow event, 07/23/2021 NOTE: Gage was destroyed during event. Peak in hydrograph is the last recorded data from the event. Flood Flow Frequency There is not enough data to compute a flood flow frequency for this gage station. FCDMC Annual Surface Water Report, Water Year 2021 Page 757 Skunk Creek at Desert Hills Drive, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 ----2 ----3 ------4 ----5 ----6 ------7 ------8 ------9 ------10 ------11 ----12 ----13 ----14 ------15 ----16 ------17 ------18 ----19 ------20 ----21 ----22 ----23 579 ----24 ------25 ------26 ------27 ------28 ------29 --------30 --------31 -------------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 579 ----MEAN 0 0 0 0 0 0 0 0 0 19 ----MAX 0 0 0 0 0 0 0 0 0 3217 ----MIN 0 0 0 0 0 0 0 0 0 0 ----AC_FT 0 0 0 0 0 0 0 0 0 1149 ---------------------------------------------------------------------------------WTR YR 2021 TOTAL 579 MEAN 2 MAX 3217 MIN 0 AC_FT 1149 NOTE: Station destroyed during flood event of July 23, 2021. Higher peak of 8,650 cfs estimated from high water marks. FCDMC Annual Surface Water Report, Water Year 2021 Page 758 Skunk Creek at Carefree Highway, ID #65707 Site Data LOCATION Located on the westbound Carefree Highway bridge about 1/4 mile east of I-17 DRAINAGE AREA 48.8 mi2 STREAM TYPE Natural Stream JURISDICTION Phoenix, Arizona WATERSHED Skunk Creek SECTION/TOWNSHIP/RANGE S02 T5N R2E LATITUDE N 33° 47' 54.6" | +33.79849 LONGITUDE W 112° 07' 23.1" | -112.12309 STREAMGAGE INSTALLATION DATE 08/19/2015 - WY 2015 AVAILABLE PERIOD OF RECORD (POR) 08/19/2015 - Current LENGTH OF AVAILABLE POR DATA 6.12 Years | 2,235 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 1.49 feet Gage Height STAFF GAGES None CREST STAGE GAGES 1 ZERO GAGE HEIGHT ELEVATION 1,672.86 feet NAVD88 POINT OF ZERO FLOW 0.2 feet Gage Height EXTREME FOR PERIOD OF RECORD 11,278 cfs | 6.87 feet GH | 07/23/2021 FCDMC Annual Surface Water Report, Water Year 2021 Page 759 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 760 WY2021 Events Date of Peak 07/23/2021 07/25/2021 07/31/2021 08/12/2021 08/14/2021 08/17/2021 08/18/2021 Peak Gage Height 6.87 3.38 1.91 3.60 3.18 2.48 2.98 Peak Discharge (cfs) 11,278 1,160 135 1,425 944 400 750 Hydrograph of peak WY 2021 flow event, 07/23/2021 Flood Flow Frequency There is not enough data to compute a flood flow frequency for this gage station. FCDMC Annual Surface Water Report, Water Year 2021 Page 761 Skunk Creek at Carefree Highway, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 196 13 20 14 170 15 16 17 88 18 140 19 57 20 21 22 23 566 24 52 25 272 26 60 27 28 29 --30 --31 --------34 -------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 985 670 0 MEAN 0 0 0 0 0 0 0 0 0 32 22 0 MAX 0 0 0 0 0 0 0 0 0 11278 1425 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 1953 1329 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 1655 MEAN 5 MAX 11278 MIN 0 AC_FT 3282 FCDMC Annual Surface Water Report, Water Year 2021 Page 762 Skunk Creek at Dixileta Drive, ID #64907 Site Data LOCATION Located on Dixileta Drive about 1/4 mile east of I-17 DRAINAGE AREA 50 mi2 STREAM TYPE Natural Stream JURISDICTION Phoenix, Arizona WATERSHED Skunk Creek SECTION/TOWNSHIP/RANGE S23 T5N R2E LATITUDE N 33° 45' 24.3" | +33.75676 LONGITUDE W 112° 07' 20.0" | -112.12222 STREAMGAGE INSTALLATION DATE 01/11/2016 - WY 2016 AVAILABLE PERIOD OF RECORD (POR) 01/11/2016 - Current LENGTH OF AVAILABLE POR DATA 5.72 Years | 2,090 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 2.20 feet Gage Height STAFF GAGES None CREST STAGE GAGES 1 ZERO GAGE HEIGHT ELEVATION 1,543.52 feet NAVD88 POINT OF ZERO FLOW 0.5 feet Gage Height EXTREME FOR PERIOD OF RECORD 1,947 cfs | 4.84 feet GH | 09/23/2019 FCDMC Annual Surface Water Report, Water Year 2021 Page 763 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 764 WY2021 Events Date of Peak 07/23/2021 07/25/2021 Peak Gage Height 6.78 2.54 Peak Discharge (cfs) 3,186 752 Hydrograph of peak WY 2021 flow event, 07/23/2021 Flood Flow Frequency There is not enough data to compute a flood flow frequency for this gage station. FCDMC Annual Surface Water Report, Water Year 2021 Page 765 Skunk Creek at Dixileta Drive, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 184 24 25 22 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 206 0 0 MEAN 0 0 0 0 0 0 0 0 0 7 0 0 MAX 0 0 0 0 0 0 0 0 0 3186 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 408 0 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 206 MEAN 1 MAX 3186 MIN 0 AC_FT 408 FCDMC Annual Surface Water Report, Water Year 2021 Page 766 Skunk Creek at I-17, ID #65807 Site Data LOCATION Located south of Jomax Road on I-17 DRAINAGE AREA 64.7 mi2 STREAM TYPE Channelized Natural Stream JURISDICTION Phoenix, Arizona WATERSHED Skunk Creek SECTION/TOWNSHIP/RANGE S35 T5N R2E LATITUDE N 33° 43' 48.3" | +33.73007 LONGITUDE W 112° 07' 11.1" | -112.11976 STREAMGAGE INSTALLATION DATE 10/26/1989 - WY 1990 AVAILABLE PERIOD OF RECORD (POR) 08/11/1990 - Current LENGTH OF AVAILABLE POR DATA 31.14 Years | 11,374 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 1.23 feet Gage Height STAFF GAGES 2 CREST STAGE GAGES 4 ZERO GAGE HEIGHT ELEVATION 1,473.97 feet NAVD88 POINT OF ZERO FLOW 1.0 feet gage height EXTREME FOR PERIOD OF RECORD 13,900 cfs | 6.80 feet | 08/19/2014 EXTREME OUTSIDE PERIOD OF RECORD 11,500 cfs | 10.48 feet | 08/01/1964 FCDMC Annual Surface Water Report, Water Year 2021 Page 767 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 768 WY2021 Events Date of Peak 07/23/2021 07/23/2021 07/25/2021 08/12/2021 08/14/2021 Peak Gage Height (feet) 1.45 5.74 2.63 1.55 1.70 Peak Discharge (cfs) 291 9,429 1,765 366 484 Hydrograph of peak WY 2021 flow event, 07/23/2021 Flood Flow Frequency Flood Flow Frequency N=62, HEC-WRC computation (based on 62 years of data) 2-year 5-year 10-year 20-year 50-year 100-year 912 3,800 7,240 11,700 19,200 25,900 NOTE(1): These results are based on available data. FCDMC Annual Surface Water Report, Water Year 2021 Page 769 Skunk Creek at I-17, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 43 9 10 11 12 17 13 20 14 66 15 16 17 18 19 20 21 22 23 628 24 60 25 296 26 9 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 43 0 0 993 103 0 MEAN 0 0 0 0 0 0 1 0 0 32 3 0 MAX 0 0 0 0 0 0 173 0 0 9429 484 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 86 0 0 1970 205 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 1140 MEAN 3 MAX 9429 MIN 0 AC_FT 2261 FCDMC Annual Surface Water Report, Water Year 2021 Page 770 Skunk Tank Wash, ID #64707 Site Data LOCATION Located on 7th Avenue about 1/4 mile south of Desert Hills Drive DRAINAGE AREA 1.5 mi2 STREAM TYPE Culvert on natural stream JURISDICTION Maricopa County, Arizona WATERSHED Skunk Creek SECTION/TOWNSHIP/RANGE S29 T6N R3E LATITUDE N 33° 50' 23.8" | +33.83995 LONGITUDE W 112° 04' 57.8" | -112.08271 STREAMGAGE INSTALLATION DATE 03/02/2006 - WY 2006 AVAILABLE PERIOD OF RECORD (POR) 03/02/2006 - Current LENGTH OF AVAILABLE POR DATA 15.58 Years | 5,692 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.50 feet Gage Height STAFF GAGES 0 CREST STAGE GAGES 0 ZERO GAGE HEIGHT ELEVATION 1,854.82 feet NAVD88 POINT OF ZERO FLOW 0.0 feet Gage Height EXTREME FOR PERIOD OF RECORD 1,278 cfs | 7.63 feet | 07/23/2021 FCDMC Annual Surface Water Report, Water Year 2021 Page 771 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 772 WY2021 Events Date of Peak 07/23/2021 07/23/2021 07/25/2021 08/12/2021 08/13/2021 Peak Gage Height (feet) 1.18 7.63 5.48 7.44 3.48 Peak Discharge (cfs) 14 1,278 242 990 104 Hydrograph of peak WY 2021 flow event, 07/23/2021 Flood Flow Frequency Flood Flow Frequency N=16, HEC-WRC computation (based on 16 years of data) 2-year 5-year 10-year 20-year 50-year 100-year 116 422 694 967 1,300 1,530 FCDMC Annual Surface Water Report, Water Year 2021 Page 773 Skunk Tank Wash, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 --6 7 8 9 10 --11 12 24 13 2 14 2 15 16 17 18 19 20 21 22 23 46 24 25 8 26 27 1 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 55 29 0 MEAN 0 0 0 0 0 0 0 0 0 2 1 0 MAX 0 0 0 0 0 0 0 0 0 1278 990 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 109 57 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 84 MEAN 0 MAX 1278 MIN 0 AC_FT 166 FCDMC Annual Surface Water Report, Water Year 2021 Page 774 Sols Wash at SR71, ID #47707 Site Data LOCATION Located 1/2 mile west of US93 on SR71 DRAINAGE AREA 0.89 mi2 STREAM TYPE Natural Stream JURISDICTION Yavapai County, Arizona WATERSHED Lower Hassayampa SECTION/TOWNSHIP/RANGE S14 T9N R7W LATITUDE N 34° 07' 06.7" | +34.11853 LONGITUDE W 112° 57' 45.8" | -112.96272 STREAMGAGE INSTALLATION DATE 09/12/2001 - WY 2001 AVAILABLE PERIOD OF RECORD (POR) 09/12/2001 - Current LENGTH OF AVAILABLE POR DATA 20.05 Years | 7,324 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.10 feet Gage Height STAFF GAGES 1 CREST STAGE GAGES 1 ZERO GAGE HEIGHT ELEVATION 2,737.60 feet NAVD88 POINT OF ZERO FLOW 0.0 feet Gage Height EXTREME FOR PERIOD OF RECORD 608 cfs | 2.59 feet | 06/16/2018 FCDMC Annual Surface Water Report, Water Year 2021 Page 775 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 776 WY2021 Events Date of Peak 07/21/2021 08/13/2021 Peak Gage Height (feet) 0.79 0.67 Peak Discharge (cfs) 51 33 Hydrograph of peak WY 2021 flow event, 07/21/2021 Flood Flow Frequency Flood Flow Frequency N=20, HEC-WRC computation (based on 20 years of data) 2-year 5-year 10-year 20-year 50-year 100-year 139 345 466 557 639 681 NOTE: These results are based on very limited data. FCDMC Annual Surface Water Report, Water Year 2021 Page 777 Sols Wash at SR71, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 1 14 15 16 17 18 19 20 21 2 22 23 24 25 --26 --27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 2 1 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 51 33 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 4 2 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 3 MEAN 0 MAX 51 MIN 0 AC_FT 6 FCDMC Annual Surface Water Report, Water Year 2021 Page 778 Sols Tributary at US93, ID #50007 Site Data LOCATION Located west of US93 near mile post 191 DRAINAGE AREA 0.15 mi2 STREAM TYPE Natural Stream JURISDICTION Yavapai County, Arizona WATERSHED Lower Hassayampa SECTION/TOWNSHIP/RANGE S11 T8N R6W LATITUDE N 34° 03' 06.8" | +34.05187 LONGITUDE W 112° 51' 01.1" | -112.85030 STREAMGAGE INSTALLATION DATE 01/30/2002 - WY 2002 AVAILABLE PERIOD OF RECORD (POR) 01/30/2002 - Current LENGTH OF AVAILABLE POR DATA 19.67 Years | 7,184 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.07 feet Gage Height STAFF GAGES 0 CREST STAGE GAGES 1 ZERO GAGE HEIGHT ELEVATION 2,576.30 feet NAVD88 POINT OF ZERO FLOW 0.0 feet Gage Height EXTREME FOR PERIOD OF RECORD 967 cfs | 3.40 feet | 07/25/2007 FCDMC Annual Surface Water Report, Water Year 2021 Page 779 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 780 WY2021 Events Date of Peak Peak Gage Height Peak Discharge (cfs) None Hydrograph of peak WY 2021 flow event, No runoff recorded in Water Year 2021. Flood Flow Frequency There is not enough data to compute a flood flow frequency for this gage station. FCDMC Annual Surface Water Report, Water Year 2021 Page 781 Sols Tributary near US93, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 --26 --27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 0 MEAN 0 MAX 0 MIN 0 AC_FT 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 782 Sols Wash near Matthie, ID #50807 Site Data LOCATION Located along the railroad about 1 mile west of Vulture Mine Road DRAINAGE AREA 121 mi2 STREAM TYPE Natural Stream JURISDICTION Wickenburg, Arizona WATERSHED Lower Hassayampa SECTION/TOWNSHIP/RANGE S32 T8N R5W LATITUDE N 33° 59' 14.8" | +33.98743 LONGITUDE W 112° 47' 34.7" | -112.79296 STREAMGAGE INSTALLATION DATE 08/04/1995 - WY 1995 AVAILABLE PERIOD OF RECORD (POR) 08/04/1995 - Current LENGTH OF AVAILABLE POR DATA 26.16 Years | 9,555 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.36 feet Gage Height STAFF GAGES 0 CREST STAGE GAGES 1 ZERO GAGE HEIGHT ELEVATION 2,230.54 feet NAVD88 POINT OF ZERO FLOW 0.0 feet Gage Height EXTREME FOR PERIOD OF RECORD 10,792 cfs | 5.15 feet | 10/21/2000 FCDMC Annual Surface Water Report, Water Year 2021 Page 783 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 784 WY2021 Events Date of Peak Peak Gage Height (feet) Peak Discharge (cfs) 08/13/2021 1.60 250 Hydrograph of peak WY 2021 flow event, No hydrograph available for peak event. Flood Flow Frequency Flood Flow Frequency N=27, HEC-WRC computation (based on 27 years of data) 2-year 5-year 10-year 20-year 50-year 100-year 575 1,930 3,960 7,490 16,100 27,700 NOTE: These results are based on limited data. FCDMC Annual Surface Water Report, Water Year 2021 Page 785 Sols Wash near Matthie, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 --26 --27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 0 MEAN 0 MAX 0 MIN 0 AC_FT 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 786 Sonoqui Wash near Hawes Road, ID #36307 Site Data LOCATION Located near Hawes and Riggs Roads DRAINAGE AREA 15.0 mi2 STREAM TYPE Channelized Natural Stream JURISDICTION Queen Creek, Arizona WATERSHED Upper East Maricopa Floodway SECTION/TOWNSHIP/RANGE S29 T2S R7E LATITUDE N 33° 13' 26.5" | +33.22402 LONGITUDE W 111° 39' 11.8" | -111.65327 STREAMGAGE INSTALLATION DATE 12/21/2016 - WY 2017 AVAILABLE PERIOD OF RECORD (POR) 12/21/2016 - Current LENGTH OF AVAILABLE POR DATA 4.78 Years | 1,745 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 1.40 feet Gage Height STAFF GAGES None CREST STAGE GAGES 1 ZERO GAGE HEIGHT ELEVATION 1,373.00 NAVD88 POINT OF ZERO FLOW 0.8 feet Gage Height EXTREME FOR PERIOD OF RECORD 2,237 cfs | 7.10 feet Gage Height | 08/17/2021 FCDMC Annual Surface Water Report, Water Year 2021 Page 787 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 788 WY2021 Events Date of Peak 07/10/2021 07/25/2021 08/11/2021 08/14/2021 08/17/2021 09/01/2021 09/02/2021 09/02/2021 Peak Gage Height 3.82 4.46 6.70 4.26 7.10 1.94 4.56 1.81 Peak Discharge (cfs) 490 712 1,902 638 2,237 66 751 50 Hydrograph of peak WY 2021 flow event, 08/17/2021 Flood Flow Frequency There is not enough data to compute a flood flow frequency for this gage station. FCDMC Annual Surface Water Report, Water Year 2021 Page 789 Sonoqui Wash near Hawes Road, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 ----2 --37 3 --4 5 6 ----7 ----8 --9 ----10 150 --11 119 12 --13 14 --44 15 --16 --15 17 --188 18 --19 20 --21 22 23 24 --25 100 26 27 28 29 ----30 ----31 -----------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 107 341 37 MEAN 0 0 0 0 0 0 0 0 0 4 12 1 MAX 0 0 0 0 0 0 0 0 0 712 2237 751 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 213 677 73 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 486 MEAN 1 MAX 2237 MIN 0 AC_FT 963 FCDMC Annual Surface Water Report, Water Year 2021 Page 790 Sonoran Wash, ID #65907 Site Data LOCATION Located southeast of Paloma Pkwy and Sonoran Desert Drive DRAINAGE AREA 7.81 mi2 STREAM TYPE Natural Stream JURISDICTION Phoenix, Arizona WATERSHED Skunk Creek SECTION/TOWNSHIP/RANGE S19 T5N R3E LATITUDE N 33° 46' 09.3" | +33.76925 LONGITUDE W 112° 05' 55.6" | -112.09878 STREAMGAGE INSTALLATION DATE 10/13/2015 - WY 2016 AVAILABLE PERIOD OF RECORD (POR) 10/13/2015 - Current LENGTH OF AVAILABLE POR DATA 5.97 Years | 2,180 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 1.34 feet Gage Height STAFF GAGES None CREST STAGE GAGES None ZERO GAGE HEIGHT ELEVATION 1,574.85 feet NAVD88 POINT OF ZERO FLOW 0.3 feet Gage Height EXTREME FOR PERIOD OF RECORD 1,131 CFS | 5.72 feet GH | 07/25/2021 FCDMC Annual Surface Water Report, Water Year 2021 Page 791 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 792 WY2021 Events Date of Peak 07/23/2021 07/25/2021 Peak Gage Height 1.83 5.72 Peak Discharge (cfs) 79 1,131 Hydrograph of peak WY 2021 flow event, 07/25/2021 Flood Flow Frequency There is not enough data to compute a flood flow frequency for this gage station. FCDMC Annual Surface Water Report, Water Year 2021 Page 793 Sonoran Wash, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 5 11 5 12 13 14 15 16 17 18 19 20 21 22 23 3 2 24 25 55 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 11 0 0 0 0 0 2 57 0 0 MEAN 0 0 0 0 0 0 0 0 0 2 0 0 MAX 0 0 21 0 0 0 0 0 21 1131 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 21 0 0 0 0 0 4 113 0 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 69 MEAN 0 MAX 1131 MIN 0 AC_FT 138 FCDMC Annual Surface Water Report, Water Year 2021 Page 794 South Mountain Fan, ID #70507 Site Data LOCATION Located in the western part of South Mountain Park DRAINAGE AREA 2.1 mi2 STREAM TYPE Natural Stream JURISDICTION Phoenix, Arizona WATERSHED Middle Gila SECTION/TOWNSHIP/RANGE S26 T1S R2E LATITUDE N 33° 18' 54.7" | +33.31518 LONGITUDE W 112° 08' 01.3" | -112.13369 STREAMGAGE INSTALLATION DATE 06/09/1993 - WY 1993 AVAILABLE PERIOD OF RECORD (POR) 06/09/1993 - Current LENGTH OF AVAILABLE POR DATA 28.31 Years | 10,341 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 1.05 feet Gage Height STAFF GAGES 0 CREST STAGE GAGES 0 ZERO GAGE HEIGHT ELEVATION 1,276.61 feet NAVD88 POINT OF ZERO FLOW 0.5 feet Gage Height EXTREME FOR PERIOD OF RECORD 1,586 cfs | 3.85 feet | 08/12/2014 FCDMC Annual Surface Water Report, Water Year 2021 Page 795 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 796 WY2021 Events Date of Peak Peak Gage Height (feet) Unknown 2.06 NOTE: Peak was recovered from the crest-stage gage. Peak Discharge (cfs) 148 Hydrograph of peak WY 2021 flow event, Hydrograph unavailable for event. Flood Flow Frequency Flood Flow Frequency HEC-1 Analysis 2-year 5-year 10-year 20-year 50-year 100-year 300 650 990 1,500 2,000 2,400 FCDMC Annual Surface Water Report, Water Year 2021 Page 797 South Mountain Fan, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 0 MEAN 0 MAX 0 MIN 0 AC_FT 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 798 Spookhill FRS, ID #74707 Site Data LOCATION Located near Loop 202 and Power Road DRAINAGE AREA 13.6 mi2 STREAM TYPE Dam of natural drainage JURISDICTION Mesa, Arizona WATERSHED Lower Verde SECTION/TOWNSHIP/RANGE S31 T2N R7E LATITUDE N 33° 28' 23.0" | +33.47305 LONGITUDE W 111° 40' 52.7" | -111.68131 STREAMGAGE INSTALLATION DATE 03/13/1984 - WY 1984 AVAILABLE POR 12/30/1987 - Current LENGTH OF AVAILABLE POR DATA 33.75 Years | 12,329 Days DATA GAPS IN POR 05/02/2008 - 06/22/2008 STAGE GAGE ELEVATION 0.28 Feet Gage Height ZERO GAGE HEIGHT ELEVATION 1,568.10 Feet NAVD88 NORMAL DRAWDOWN RATE -0.12 feet per hour PZF (GATED OUTLET) 0.0 Feet Gage Height PZF (UNGATED OUTLET) 9.4 Feet Gage Height MINIMUM LEVEL POOL ELEVATION 3.7 feet at Brown Rd, 2.2 feet at McKellips Rd, 1.0 feet at McDowell Rd MINIMUM FREEWAY LEVEE ELEVATION 14.0 feet Gage Height SPILLWAY ELEVATION 15.8 feet Gage Height TOP OF DAM ELEVATION 25.3 feet Gage Height FCDMC Annual Surface Water Report, Water Year 2021 Page 799 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 800 WY2021 Events Date of Peak 01/26/2021 07/11/2021 07/15/2021 07/24/2021 08/14/2021 09/02/2021 Peak Gage Height (feet) 1.60 1.30 1.97 2.92 8.50 2.44 Peak Volume (ac-ft) 0.3 0.0 1.2 9.7 359.7 3.8 Hydrograph of peak 2021 impoundment event, 08/14/2021 FCDMC Annual Surface Water Report, Water Year 2021 Page 801 Percent Spillway Capacity 0.0 0.0 0.0 0.3 12.8 0.2 Spookhill FRS, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 24 2 22 3 4 5 6 7 8 9 10 2 11 17 32 12 4 49 13 48 14 55 15 7 52 16 25 49 17 23 47 18 21 42 19 7 31 20 6 21 22 23 11 24 29 25 4 31 26 7 29 27 8 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 10 0 0 0 0 0 214 411 46 MEAN 0 0 0 0 0 0 0 0 0 7 13 2 MAX 0 0 0 24 0 0 0 0 0 33 56 30 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 21 0 0 0 0 0 424 814 92 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 681 MEAN 2 MAX 56 MIN 0 AC_FT 1351 FCDMC Annual Surface Water Report, Water Year 2021 Page 802 Spookhill FRS, volume data Volume, in acre-feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 1 2 1 3 4 5 6 7 8 9 10 11 81 12 161 13 140 14 331 15 239 16 1 165 17 123 18 55 19 7 20 21 22 23 24 5 25 6 26 3 27 28 29 --30 --31 ---------------------------------------------------------------------------------------MEAN 0 0 0 0 0 0 0 0 0 0 42 0 MAX 0 0 0 0 0 0 0 0 0 10 360 4 MIN 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 4 MAX 360 MIN 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 803 Spookhill FRS, stage data Depth, in feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 1.8 2 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 1.8 3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.4 4 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 5 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 6 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 7 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 8 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 9 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 10 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.4 0.3 0.3 11 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 1.1 4.1 0.3 12 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.8 6.6 0.3 13 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.4 6.3 0.3 14 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 8.2 0.3 15 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.7 7.4 0.3 16 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 1.8 6.6 0.3 17 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 1.5 6.1 0.3 18 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 1.2 4.6 0.3 19 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.6 2.6 0.3 20 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.6 0.3 21 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 22 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 23 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.9 0.3 0.3 24 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 2.4 0.3 0.3 25 0.3 0.3 0.3 0.5 0.3 0.3 0.3 0.3 0.3 2.7 0.3 0.3 26 0.3 0.3 0.3 0.7 0.3 0.3 0.3 0.3 0.3 2.2 0.3 0.3 27 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.9 0.3 0.3 28 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.4 0.3 0.3 29 0.3 0.3 0.3 0.3 --0.3 0.3 0.3 0.3 0.3 0.3 0.3 30 0.3 0.3 0.3 0.3 --0.3 0.3 0.3 0.3 0.3 0.3 0.3 31 0.3 --0.3 0.3 --0.3 --0.3 --0.3 0.3 -------------------------------------------------------------------------------MEAN 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.7 1.9 0.4 MAX 0.3 0.3 0.3 1.6 0.3 0.3 0.3 0.3 0.3 2.9 8.5 2.4 MIN 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0.47 MAX 8.50 MIN 0.28 FCDMC Annual Surface Water Report, Water Year 2021 Page 804 Spookhill FRS at McDowell Road, ID #80007 Site Data LOCATION Located at McDowell Road and the Loop 202 DRAINAGE AREA 13.6 mi2 at outlet gage STREAM TYPE Engineered Channel / Levee / Dam JURISDICTION Mesa, Arizona WATERSHED Lower Verde SECTION/TOWNSHIP/RANGE S06 T1N R7E LATITUDE N 33° 27' 57.4" | +33.46594 LONGITUDE W 111° 40' 42.0" | -111.67834 STREAMGAGE INSTALLATION DATE 06/19/2008 - WY 2008 AVAILABLE PERIOD OF RECORD (POR) 06/19/2008 - Current LENGTH OF AVAILABLE POR DATA 13.28 Years | 4,852 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.00 feet Gage Height STAFF GAGES None ZERO GAGE HEIGHT ELEVATION 1,569.19 feet NAVD88 POINT OF ZERO FLOW 0.00 feet Gage Height DAM ELEVATIONS AS RELATED TO GAGE HEIGHT AT THIS SITE PRINCIPAL OUTLET ELEVATION -1.09 feet Gage Height UNGATED PRINICPAL OUTLET INLET ELEV 8.31 feet Gage Height MINIMUM FREEWAY LEVEE ELEVATION 12.91 feet Gage Height SPILLWAY ELEVATION 14.71 feet Gage Height FCDMC Annual Surface Water Report, Water Year 2021 Page 805 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 806 WY2021 Events Date of Peak 01/25/2021 07/24/2021 08/14/2021 09/02/2021 Peak Gage Height (feet) 0.52 1.24 7.00 3.43 Peak Volume (ac-ft) 1.1 6.4 340.0 60.6 Hydrograph of peak 2021 impoundment event, 08/14/2021 FCDMC Annual Surface Water Report, Water Year 2021 Page 807 Percent Spillway Capacity 0.0 0.2 7.3 1.8 Spookhill FRS at McDowell Road, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 19 2 26 3 8 4 5 6 7 8 9 10 11 31 12 49 13 48 14 54 15 2 52 16 8 49 17 2 47 18 41 19 30 20 9 21 3 22 1 23 7 24 22 25 5 30 26 8 25 27 8 28 2 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 13 0 0 0 0 0 107 414 53 MEAN 0 0 0 0 0 0 0 0 0 3 13 2 MAX 0 0 0 22 0 0 0 0 0 32 56 43 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 26 0 0 0 0 0 213 820 106 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 587 MEAN 2 MAX 56 MIN 0 AC_FT 1165 FCDMC Annual Surface Water Report, Water Year 2021 Page 808 Spookhill FRS at McDowell Road, volume data Volume, in acre-feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 1 2 11 3 4 5 6 7 8 9 10 11 75 12 149 13 129 14 305 15 218 16 153 17 115 18 50 19 7 20 1 21 22 23 24 3 25 5 26 2 27 28 29 --30 --31 ---------------------------------------------------------------------------------------MEAN 0 0 0 0 0 0 0 0 0 0 39 0 MAX 0 0 0 1 0 0 0 0 0 6 340 61 MIN 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 3 MAX 340 MIN 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 809 Spookhill FRS at McDowell Road, stage data Depth, in feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.5 2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.1 3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.2 4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 6 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 7 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 8 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 9 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 10 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 11 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 3.0 0.0 12 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 5.1 0.0 13 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 4.8 0.0 14 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 6.7 0.0 15 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 5.9 0.0 16 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.3 5.1 0.0 17 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 4.5 0.0 18 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 3.1 0.0 19 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.2 0.0 20 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.3 0.0 21 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.0 22 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.0 23 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.2 0.0 0.0 24 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.8 0.0 0.0 25 0.0 0.0 0.0 0.1 0.0 0.0 0.0 0.0 0.0 1.1 0.0 0.0 26 0.0 0.0 0.0 0.2 0.0 0.0 0.0 0.0 0.0 0.7 0.0 0.0 27 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.2 0.0 0.0 28 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.0 0.0 29 0.0 0.0 0.0 0.0 --0.0 0.0 0.0 0.0 0.0 0.0 0.0 30 0.0 0.0 0.0 0.0 --0.0 0.0 0.0 0.0 0.0 0.0 0.0 31 0.0 --0.0 0.0 --0.0 --0.0 --0.0 0.0 -------------------------------------------------------------------------------MEAN 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 1.3 0.1 MAX 0.0 0.0 0.0 0.5 0.0 0.0 0.0 0.0 0.0 1.2 7.0 3.4 MIN 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0.12 MAX 7.00 MIN 0.00 FCDMC Annual Surface Water Report, Water Year 2021 Page 810 Spookhill FRS at McKellips Road, ID #79807 Site Data LOCATION Located at McKellips Road and the Loop 202 DRAINAGE AREA 13.6 mi2 at outlet gage STREAM TYPE Engineered Channel / Levee / Dam JURISDICTION Mesa, Arizona WATERSHED Lower Verde SECTION/TOWNSHIP/RANGE S07 T1N R7E LATITUDE N 33° 27' 04.7" | +33.45131 LONGITUDE W 111° 40' 03.4" | -111.66761 STREAMGAGE INSTALLATION DATE 06/19/2008 - WY 2008 AVAILABLE PERIOD OF RECORD (POR) 06/19/2008 - Current LENGTH OF AVAILABLE POR DATA 13.28 Years | 4,852 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.25 feet Gage Height STAFF GAGES None ZERO GAGE HEIGHT ELEVATION 1,570.22 feet NAVD88 POINT OF ZERO FLOW 0.00 feet Gage Height DAM ELEVATIONS AS RELATED TO GAGE HEIGHT AT THIS SITE PRINCIPAL OUTLET ELEVATION -2.12 feet Gage Height UNGATED PRINCIPAL OUTLET INLET ELEV 7.28 feet Gage Height MINIMUM FREEWAY LEVEE ELEVATION 11.88 feet Gage Height SPILLWAY ELEVATION 13.68 feet Gage Height FCDMC Annual Surface Water Report, Water Year 2021 Page 811 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 812 WY2021 Events Date of Peak 01/25/2021 07/24/2021 08/12/2021 08/14/2021 09/01/2021 Peak Gage Height (feet) 0.52 1.19 4.78 6.30 1.09 Peak Volume (ac-ft) 1.4 21.0 198.8 364.5 18.9 Hydrograph of peak 2021 impoundment event, 08/14/2021 FCDMC Annual Surface Water Report, Water Year 2021 Page 813 Percent Spillway Capacity 0.2 0.4 4.9 7.9 0.3 Spookhill FRS at McKellips Road, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 5 2 2 3 4 5 6 7 8 9 10 11 32 12 50 13 49 14 56 15 53 16 50 17 48 18 43 19 19 20 21 22 23 1 24 10 1 25 4 26 2 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 16 401 7 MEAN 0 0 0 0 0 0 0 0 0 1 13 0 MAX 0 0 0 5 0 0 0 0 0 30 56 26 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 1 0 0 0 0 0 33 796 15 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 426 MEAN 1 MAX 56 MIN 0 AC_FT 844 FCDMC Annual Surface Water Report, Water Year 2021 Page 814 Spookhill FRS at McKellips Road, volume data Volume, in acre-feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 3 2 1 3 4 5 6 7 8 9 10 11 94 12 175 13 152 14 341 15 249 16 177 17 136 18 63 19 14 20 21 22 23 24 8 25 1 26 1 27 28 29 --30 --31 ---------------------------------------------------------------------------------------MEAN 0 0 0 0 0 0 0 0 0 0 45 0 MAX 0 0 0 1 0 0 0 0 0 21 365 19 MIN 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 4 MAX 365 MIN 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 815 Spookhill FRS at McKellips Road, stage data Depth, in feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.5 2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.4 3 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.3 4 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.3 0.2 5 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.3 0.2 6 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.3 0.2 7 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.3 0.2 8 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 9 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 10 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 11 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 2.8 0.2 12 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 4.5 0.2 13 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 4.2 0.2 14 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 6.1 0.2 15 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 5.3 0.2 16 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 4.5 0.2 17 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 4.0 0.2 18 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 2.5 0.2 19 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.9 0.2 20 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.3 0.2 21 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.3 0.2 22 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.3 0.2 23 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.3 0.3 0.2 24 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.6 0.3 0.2 25 0.2 0.2 0.2 0.3 0.2 0.2 0.2 0.2 0.2 0.5 0.3 0.2 26 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.3 0.3 0.2 27 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.3 0.2 28 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.3 0.2 29 0.2 0.2 0.2 0.2 --0.2 0.2 0.2 0.2 0.2 0.3 0.2 30 0.2 0.2 0.2 0.2 --0.2 0.2 0.2 0.2 0.2 0.2 0.2 31 0.2 --0.2 0.2 --0.2 --0.2 --0.2 0.2 -------------------------------------------------------------------------------MEAN 0.2 0.2 0.2 0.3 0.2 0.2 0.2 0.2 0.2 0.3 1.3 0.3 MAX 0.2 0.2 0.2 0.5 0.2 0.2 0.2 0.2 0.2 1.2 6.3 1.1 MIN 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0.34 MAX 6.30 MIN 0.25 FCDMC Annual Surface Water Report, Water Year 2021 Page 816 Spookhill FRS at Brown Road, ID #81507 Site Data LOCATION Located at Brown Road and SR 202L DRAINAGE AREA 13.6 mi2 at outlet gage STREAM TYPE Engineered Channel / Levee / Dam JURISDICTION Mesa, Arizona WATERSHED Lower Verde SECTION/TOWNSHIP/RANGE S16 T1N R7E LATITUDE N 33° 26' 11.9" | +33.43664 LONGITUDE W 111° 38' 52.8" | -111.64799 STREAMGAGE INSTALLATION DATE 06/04/2008 - WY 2008 AVAILABLE PERIOD OF RECORD (POR) 06/04/2008 - Current LENGTH OF AVAILABLE POR DATA 13.33 Years | 4,867 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.32 feet Gage Height STAFF GAGES None ZERO GAGE HEIGHT ELEVATION 1,571.53 feet NAVD88 POINT OF ZERO FLOW 0.00 feet Gage Height DAM ELEVATIONS AS RELATED TO GAGE HEIGHT AT THIS SITE PRINCIPAL OUTLET ELEVATION -3.43 feet Gage Height UNGATED PRINCIPAL OUTLET INLET ELEV 5.97 feet Gage Height MINIMUM FREEWAY LEVEE ELEVATION 10.57 feet Gage Height SPILLWAY ELEVATION 12.68 feet Gage Height FCDMC Annual Surface Water Report, Water Year 2021 Page 817 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 818 WY2021 Events Date of Peak 07/24/2021 08/11/2021 08/14/2021 08/17/2021 Peak Gage Height (feet) 1.09 3.76 5.53 3.63 Peak Volume (ac-ft) 59.0 231.9 439.2 218.9 Hydrograph of peak 2021 impoundment event, 08/14/2021 FCDMC Annual Surface Water Report, Water Year 2021 Page 819 Percent Spillway Capacity 1.6 5.4 10.1 5.2 Spookhill FRS at Brown Road, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 42 2 43 3 41 4 28 5 1 15 6 8 7 22 8 41 9 20 10 1 11 33 12 50 13 49 14 56 15 53 16 50 17 48 18 45 19 36 20 15 21 9 22 1 23 23 26 24 37 38 25 35 25 26 14 15 27 8 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 109 557 261 MEAN 0 0 0 0 0 0 0 0 0 4 18 9 MAX 0 0 0 0 0 0 0 0 0 45 58 44 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 217 1105 517 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 927 MEAN 3 MAX 58 MIN 0 AC_FT 1839 FCDMC Annual Surface Water Report, Water Year 2021 Page 820 Spookhill FRS at Brown Road, volume data Volume, in acre-feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 45 2 46 3 38 4 19 5 13 6 2 7 20 8 38 9 15 10 11 104 12 173 13 149 14 351 15 243 16 173 17 142 18 65 19 24 20 13 21 4 22 23 20 24 24 29 29 25 28 18 26 13 13 27 2 28 29 --30 --31 ---------------------------------------------------------------------------------------MEAN 0 0 0 0 0 0 0 0 0 3 49 8 MAX 0 0 0 0 0 0 0 0 0 59 439 53 MIN 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 5 MAX 439 MIN 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 821 Spookhill FRS at Brown Road, stage data Depth, in feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.7 2 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.7 3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.5 4 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.4 5 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 6 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 7 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.4 8 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.5 9 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.4 10 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 11 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 2.0 0.3 12 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 3.1 0.3 13 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 2.8 0.3 14 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 4.8 0.3 15 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 3.9 0.3 16 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 3.1 0.3 17 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 2.7 0.3 18 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 1.2 0.3 19 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.4 0.3 20 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 21 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 22 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 23 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.4 0.4 0.3 24 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.5 0.4 0.3 25 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.5 0.4 0.3 26 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 27 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 28 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 29 0.3 0.3 0.3 0.3 --0.3 0.3 0.3 0.3 0.3 0.3 0.3 30 0.3 0.3 0.3 0.3 --0.3 0.3 0.3 0.3 0.3 0.3 0.3 31 0.3 --0.3 0.3 --0.3 --0.3 --0.3 0.3 -------------------------------------------------------------------------------MEAN 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 1.0 0.3 MAX 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 1.1 5.5 0.9 MIN 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0.34 MAX 5.53 MIN 0.27 FCDMC Annual Surface Water Report, Water Year 2021 Page 822 Stagecoach Wash, ID #20007 Site Data LOCATION On Pima Road about 1/4 miles south of Stagecoach Pass DRAINAGE AREA 1.12 mi2 STREAM TYPE Culvert at natural stream JURISDICTION Scottsdale, Arizona WATERSHED Cave Creek SECTION/TOWNSHIP/RANGE S061 T5N R5E LATITUDE N 33° 48' 42.8" | +33.81190 LONGITUDE W 111° 53' 28.0" | -111.89112 STREAMGAGE INSTALLATION DATE 06/13/2001 - WY 2001 AVAILABLE PERIOD OF RECORD (POR) 06/13/2001 - Current LENGTH OF AVAILABE POR DATA 20.30 Years | 7,415 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.85 feet Gage Height STAFF GAGES 0 CREST STAGE GAGES 1 ZERO GAGE HEIGHT ELEVATION 2,548.94 feet NAVD88 POINT OF ZERO FLOW 0.7 feet Gage Height EXTREME FOR PERIOD OF RECORD 802 cfs | 5.10 feet | 07/31/2007 FCDMC Annual Surface Water Report, Water Year 2021 Page 823 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 824 WY2021 Events Date of Peak Peak Gage Height (feet) Peak Discharge (cfs) None Hydrograph of peak WY 2021 flow event, No runoff recorded in Water Year 2021. Flood Flow Frequency Flood Flow Frequency N=21, HEC-WRC computation (based on 21 years of data) 2-year 5-year 10-year 20-year 50-year 100-year 13 54 133 306 852 1,780 FCDMC Annual Surface Water Report, Water Year 2021 Page 825 Stagecoach Wash, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 8 3 0 0 1 3 7 6 7 8 8 8 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 16 7 0 0 2 5 13 13 14 17 17 16 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 60 MEAN 0 MAX 0 MIN 0 AC_FT 119 FCDMC Annual Surface Water Report, Water Year 2021 Page 826 Stoneridge Dam, ID #77307 Site Data LOCATION About 1/2 mile north of Shea Boulevard, west of Fountain Hills Boulevard DRAINAGE AREA 0.86 mi2 STREAM TYPE Dam of natural drainage JURISDICTION Fountain Hills, Arizona WATERSHED Lower Verde SECTION/TOWNSHIP/RANGE S22 T3N R6E LATITUDE N 33° 35' 40.1" | +33.59448 LONGITUDE W 111° 44' 00.0" | -111.73332 STREAMGAGE INSTALLATION DATE 12/11/1996 - WY 1997 AVAILABLE PERIOD OF RECORD (POR) 12/11/1996 - Current LENGTH OF AVAILABLE POR DATA 24.80 Years | 9,060 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 1.30 feet Gage Height STAFF GAGES 0 ZERO GAGE HEIGHT ELEVATION 1,680.94 feet NAVD88 POINT OF ZERO FLOW 0.00 feet Gage Height SPILLWAY CREST ELEVATION 24.0 feet Gage Height TOP OF DAM ELEVATION 31.0 feet Gage Height FCDMC Annual Surface Water Report, Water Year 2021 Page 827 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 828 WY2021 Events Date of Peak 07/23/2021 08/11/2021 08/11/2021 08/13/2021 08/16/2021 Peak Gage Height (feet) 1.95 3.87 7.09 10.48 2.28 Peak Volume (ac-ft) 0.2 0.5 2.1 9.0 0.2 Hydrograph of peak 2021 impoundment event, 08/13/2021 FCDMC Annual Surface Water Report, Water Year 2021 Page 829 Percent Spillway Capacity 0.3 0.8 3.4 13.6 0.4 Stoneridge Dam, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 2 6 5 7 2 8 4 9 10 11 3 12 13 5 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --2 31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 2 0 0 2 8 11 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 7 0 0 14 71 7 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 4 0 0 4 17 21 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 23 MEAN 0 MAX 71 MIN 0 AC_FT 46 FCDMC Annual Surface Water Report, Water Year 2021 Page 830 Stoneridge Dam, volume data Volume, in acre feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 9 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0 MAX 9 MIN 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 831 Stoneridge Dam, stage data Depth, in feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 2 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 4 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 5 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 6 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 7 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 8 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 9 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 10 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 11 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.5 1.3 12 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 13 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.8 1.3 14 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 15 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 16 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 17 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 18 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 19 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 20 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 21 1.3 1.3 1.3 1.3 1.3 1.3 0.0 1.3 1.3 1.3 1.3 1.3 22 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 23 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 24 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 25 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 26 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 27 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 28 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 29 1.3 1.3 1.3 1.3 --1.3 1.3 1.3 1.3 1.3 1.3 1.3 30 1.3 1.3 1.3 1.3 --1.3 1.3 1.3 1.3 1.3 1.3 1.3 31 1.3 --1.3 1.3 --1.3 --1.3 --1.3 1.3 -------------------------------------------------------------------------------MEAN 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 MAX 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.9 10.5 1.3 MIN 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 -----------------------------------------------------------------------------WTR YR 2021 MEAN 1.30 MAX 10.48 MIN 1.30 FCDMC Annual Surface Water Report, Water Year 2021 Page 832 Sun Valley Parkway at Northern Avenue, ID #48307 Site Data LOCATION On Sun Valley Parkway near the Northern Avenue alignment DRAINAGE AREA 1.4 mi2 STREAM TYPE Natural Stream JURISDICTION Maricopa County, Arizona WATERSHED Lower Hassayampa SECTION/TOWNSHIP/RANGE S32 T3N R4W LATITUDE N 33° 33' 12.4" | +33.55345 LONGITUDE W 112° 40' 40.9" | -112.67803 STREAMGAGE INSTALLATION DATE 08/02/2005 - WY 2005 AVAILABLE PERIOD OF RECORD (POR) 08/02/2005 - Current LENGTH OF AVAILABLE POR DATA 16.16 Years | 5,904 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.15 feet Gage Height STAFF GAGES 0 CREST STAGE GAGES 0 ZERO GAGE HEIGHT ELEVATION 1,394.57 feet NAVD88 POINT OF ZERO FLOW 0.0 feet Gage Height EXTREME FOR PERIOD OF RECORD 790 cfs | 1.88 feet | 09/08/2014 FCDMC Annual Surface Water Report, Water Year 2021 Page 833 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 834 WY2021 Events Date of Peak Peak Gage Height Peak Discharge (cfs) 07/25/2021 0.39 32 Hydrograph of peak WY 2021 flow event, 07/25/2021 Flood Flow Frequency There is not enough data to compute a flood flow frequency for this gage station. FCDMC Annual Surface Water Report, Water Year 2021 Page 835 Sun Valley Parkway at Northern, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 --6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 1 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 1 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 32 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 3 0 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 1 MEAN 0 MAX 32 MIN 0 AC_FT 3 FCDMC Annual Surface Water Report, Water Year 2021 Page 836 Sunnycove FRS, ID #46507 Site Data LOCATION In Wickenburg south of US 60 near the cemetery DRAINAGE AREA 1.35 mi2 STREAM TYPE Dam of natural drainage JURISDICTION Wickenburg, Arizona WATERSHED Lower Hassayampa SECTION/TOWNSHIP/RANGE S11 T7N R5W LATITUDE N 33° 57' 26.1" | +33.95725 LONGITUDE W 112° 44' 23.2" | -112.73978 STREAMGAGE INSTALLATION DATE 07/01/1986 - WY 1986 AVAILABLE PERIOD OF RECORD (POR) 12/16/1988 - Current LENGTH OF AVAILABLE POR DATA 32.79 Years | 11,977 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.00 feet Gage Height STAFF GAGES 10 ZERO GAGE HEIGHT ELEVATION 2,135.10 feet NAVD88 POINT OF ZERO FLOW (GATED ORIFICE) -5.0 feet Gage Height POINT OF ZERO FLOW (UNGATED ORIFICE) 15.0 feet Gage Height POINT OF ZERO FLOW (PRINCIPAL OUTLET TOWER) 36.5 feet Gage Height SPILLWAY ELEVATION 37.1 feet Gage Height TOP OF DAM ELEVATION 45.0 feet Gage Height FCDMC Annual Surface Water Report, Water Year 2021 Page 837 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 838 WY2021 Events Date of Peak 01/24/2021 07/25/2021 Peak Gage Height (feet) 2.00 3.93 Peak Volume (ac-ft) 0.2 0.8 Hydrograph of peak 2021 impoundment event, 07/25/2021 FCDMC Annual Surface Water Report, Water Year 2021 Page 839 Percent Spillway Capacity 0.1 0.4 Sunnycove FRS, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 --26 --27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 0 MEAN 0 MAX 0 MIN 0 AC_FT 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 840 Sunnycove FRS, volume data Volume, in acre-feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 --1 26 --1 27 1 28 1 29 --30 --31 ---------------------------------------------------------------------------------------MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 1 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0 MAX 1 MIN 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 841 Sunnycove FRS, stage data Depth, in feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2.2 1.2 2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2.1 1.1 3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2.0 1.0 4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2.0 1.0 5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.9 1.0 6 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.9 0.9 7 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.8 0.9 8 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.8 0.8 9 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.8 0.8 10 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.8 0.7 11 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.9 0.7 12 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.8 0.6 13 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.7 0.6 14 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.7 0.6 15 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.7 0.5 16 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.6 0.5 17 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.7 0.5 18 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.7 0.4 19 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.6 0.4 20 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.6 0.4 21 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.4 1.5 0.3 22 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.1 1.5 0.2 23 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.1 1.4 0.2 24 0.0 0.0 0.0 1.0 0.0 0.0 0.0 0.0 0.0 1.0 1.3 0.1 25 0.0 0.0 0.0 --0.0 0.0 0.0 0.0 0.0 2.8 1.3 0.0 26 0.0 0.0 0.0 --0.0 0.0 0.0 0.0 0.0 3.6 1.2 0.0 27 0.0 0.0 0.0 1.4 0.0 0.0 0.0 0.0 0.0 3.4 1.2 0.0 28 0.0 0.0 0.0 1.2 0.0 0.0 0.0 0.0 0.0 3.3 1.1 0.0 29 0.0 0.0 0.0 0.7 --0.0 0.0 0.0 0.0 2.7 1.1 0.0 30 0.0 0.0 0.0 0.0 --0.0 0.0 0.0 0.0 2.3 1.0 0.0 31 0.0 --0.0 0.0 --0.0 --0.0 --2.3 1.2 -------------------------------------------------------------------------------MEAN 0.0 0.0 0.0 0.2 0.0 0.0 0.0 0.0 0.0 0.8 1.6 0.5 MAX 0.0 0.0 0.0 2.0 0.0 0.0 0.0 0.0 0.0 3.9 2.3 1.2 MIN 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.9 0.0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0.26 MAX 3.93 MIN 0.00 FCDMC Annual Surface Water Report, Water Year 2021 Page 842 Sunridge Canyon Dam, ID #77507 Site Data LOCATION Near the Sunridge Canyon Golf Course DRAINAGE AREA 1.60 mi2 STREAM TYPE Dam of natural drainage JURISDICTION Fountain Hills, Arizona WATERSHED Lower Verde SECTION/TOWNSHIP/RANGE S16 T3N R6E LATITUDE N 33° 36' 23.1" | +33.60641 LONGITUDE W 111° 45' 04.0" | -111.75112 STREAMGAGE INSTALLATION DATE 02/04/1997 - WY 1997 AVAILABLE PERIOD OF RECORD (POR) 02/04/1997 - Current LENGTH OF AVAILABLE POR DATA 24.65 Years | 9,005 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 1.20 feet Gage Height STAFF GAGES 0 ZERO GAGE HEIGHT ELEVATION 1,886.90 feet NAVD88 POINT OF ZERO FLOW 0.00 feet Gage Height SPILLWAY CREST ELEVATION 40.1 feet Gage Height TOP OF DAM ELEVATION 47.0 feet Gage Height FCDMC Annual Surface Water Report, Water Year 2021 Page 843 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 844 WY2021 Events Date of Peak 07/22/2021 08/11/2021 08/13/2021 Peak Gage Height (feet) 4.23 5.49 7.50 Peak Volume (ac-ft) 0.0 0.1 0.1 Hydrograph of peak 2021 impoundment event, 08/13/2021 FCDMC Annual Surface Water Report, Water Year 2021 Page 845 Percent Spillway Capacity 0.1 0.2 0.3 Sunridge Canyon Dam, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 --5 6 7 8 9 10 11 6 12 13 6 14 9 15 16 17 18 19 20 21 1 22 14 23 26 24 --25 26 27 1 28 6 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 89 22 0 MEAN 0 0 0 0 0 0 0 0 0 3 1 0 MAX 0 0 0 0 0 0 0 0 0 74 137 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 176 44 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 111 MEAN 0 MAX 137 MIN 0 AC_FT 220 FCDMC Annual Surface Water Report, Water Year 2021 Page 846 Sunridge Canyon Dam, volume data Volume, in acre feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 --5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 --25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0 MAX 0 MIN 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 847 Sunridge Canyon Dam, stage data Depth, in feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 3 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 4 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 --1.2 1.2 5 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 6 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 7 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 8 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 9 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 10 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 11 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.4 1.2 12 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 13 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.5 1.2 14 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.4 1.2 15 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 16 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 17 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 18 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 19 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 20 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 21 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 22 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.5 1.2 1.2 23 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.8 1.2 1.2 24 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 --1.2 1.2 25 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 26 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 27 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 28 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.3 1.2 1.2 29 1.2 1.2 1.2 1.2 --1.2 1.2 1.2 1.2 1.2 1.2 1.2 30 1.2 1.2 1.2 1.2 --1.2 1.2 1.2 1.2 1.2 1.2 1.2 31 1.2 --1.2 1.2 --1.2 --1.2 --1.2 1.2 -------------------------------------------------------------------------------MEAN 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.3 1.2 1.2 MAX 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 4.2 7.5 1.2 MIN 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 -----------------------------------------------------------------------------WTR YR 2021 MEAN 1.21 MAX 7.50 MIN 1.20 FCDMC Annual Surface Water Report, Water Year 2021 Page 848 Sunset FRS, ID #46007 Site Data LOCATION In Wickenburg near US 60 and Mariposa Drive DRAINAGE AREA 0.95 mi2 STREAM TYPE Dam of natural drainage JURISDICTION Wickenburg, Arizona WATERSHED Lower Hassayampa SECTION/TOWNSHIP/RANGE S11 T7N R5W LATITUDE N 33° 57' 53.7" | +33.96491 LONGITUDE W 112° 44' 32.6" | -112.74238 STREAMGAGE INSTALLATION DATE 02/12/1989 - WY 1989 AVAILABLE PERIOD OF RECORD (POR) 02/12/1989 - Current LENGTH OF AVAILABLE POR DATA 32.63 Years | 11,919 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.10 feet Gage Height STAFF GAGES 7 ZERO GAGE HEIGHT ELEVATION 2,114.01 feet NAVD88 POINT OF ZERO FLOW (GATED ORIFICE) 0.0 feet Gage Height POINT OF ZERO FLOW (UNGATED ORIFICE) 8.75 feet Gage Height POINT OF ZERO FLOW (PRINCIPAL OUTLET TOWER) 19.75 feet Gage Height SPILLWAY ELEVATION 18.85 feet Gage Height TOP OF DAM ELEVATION 30.0 feet Gage Height FCDMC Annual Surface Water Report, Water Year 2021 Page 849 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 850 WY2021 Events Date of Peak 01/25/2021 07/03/2021 07/21/2021 07/25/2021 07/31/2021 08/14/2021 Peak Gage Height (feet) 4.25 3.57 3.66 5.13 4.01 3.13 Peak Volume (ac-ft) 1.3 0.8 0.8 2.8 1.0 0.6 Hydrograph of peak 2021 impoundment event, 07/25/2021 FCDMC Annual Surface Water Report, Water Year 2021 Page 851 Percent Spillway Capacity 1.8 0.9 1.0 3.7 1.3 0.5 Sunset FRS, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 0 MEAN 0 MAX 0 MIN 0 AC_FT 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 852 Sunset FRS, volume data Volume, in acre-feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 1 25 1 2 26 1 1 27 1 28 29 --30 --31 --------1 -------------------------------------------------------------------------------MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 1 0 0 0 0 0 3 1 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0 MAX 3 MIN 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 853 Sunset FRS, stage data Depth, in feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 0.1 0.1 0.1 0.1 0.8 0.1 0.1 0.1 0.1 0.1 3.4 2.3 2 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 3.0 2.2 3 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 1.0 2.7 2.0 4 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 3.0 2.5 1.9 5 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 2.7 2.2 1.7 6 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 2.4 2.1 1.6 7 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 2.2 1.9 1.5 8 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 2.0 1.8 1.4 9 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 1.9 1.7 1.3 10 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 1.7 1.7 1.3 11 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 1.6 1.6 1.2 12 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 1.5 1.5 1.1 13 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 1.4 1.5 1.1 14 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 1.3 2.9 1.0 15 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 1.1 2.6 0.9 16 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 1.0 2.5 0.8 17 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.9 2.3 0.8 18 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.8 2.4 0.7 19 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.8 2.7 0.6 20 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.7 2.4 0.5 21 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 1.6 2.2 0.5 22 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 2.3 2.0 0.4 23 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 1.5 1.9 0.4 24 0.1 0.1 0.1 3.0 0.1 0.1 0.1 0.1 0.1 1.4 1.8 0.3 25 0.1 0.1 0.1 4.2 0.1 0.1 0.1 0.1 0.1 4.0 1.6 0.2 26 0.1 0.1 0.1 3.8 0.1 0.1 0.1 0.1 0.1 2.8 1.5 0.2 27 0.1 0.1 0.1 3.4 0.1 0.1 0.1 0.1 0.1 0.3 1.5 0.5 28 0.1 0.1 0.1 2.9 0.1 0.1 0.1 0.1 0.1 0.2 1.4 0.5 29 0.1 0.1 0.1 2.5 --0.1 0.1 0.1 0.1 0.1 1.3 0.4 30 0.1 0.1 0.1 2.2 --0.1 0.1 0.1 0.1 0.1 1.3 0.3 31 0.1 --0.1 1.9 --0.1 --0.1 --3.5 2.5 -------------------------------------------------------------------------------MEAN 0.1 0.1 0.1 0.8 0.1 0.1 0.1 0.1 0.1 1.5 2.1 1.0 MAX 0.1 0.1 0.1 4.2 1.7 0.1 0.1 0.1 0.1 5.1 3.5 2.3 MIN 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 1.2 0.1 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0.52 MAX 5.13 MIN 0.10 FCDMC Annual Surface Water Report, Water Year 2021 Page 854 Sycamore Creek Fire, ID #81807(transducer)/81813(radar) Site Data LOCATION Located near town of Sunflower, Arizona DRAINAGE AREA 20.2 mi2 STREAM TYPE Natural Stream JURISDICTION Maricopa County, Arizona WATERSHED Lower Verde SECTION/TOWNSHIP/RANGE S25 T7N R8E LATITUDE N 33° 55' 34.8" | +33.92634 LONGITUDE W 111° 28' 46.0" | -111.47944 STREAMGAGE INSTALLATION DATE 06/26/2012 - WY 2012 AVAILABLE PERIOD OF RECORD (POR) 06/26/2012 - Current LENGTH OF AVAILABLE POR DATA 9.26 Years | 3,384 Days DATA GAPS IN POR None STATUS SENSOR (5872) ELEVATION 2.15 feet Gage Height RADAR GAGE (5871) GROUND ELEVATION BELOW SENSOR 3.8 feet Gage Height TRANSDUCER GAGE (5873) ELEVATION 7.26 feet Gage Height STAFF GAGES 0 CREST STAGE GAGES 0 ZERO GAGE HEIGHT ELEVATION 3,783.64 feet NAVD88 POINT OF ZERO FLOW 0.0 feet Gage Height EXTREME FOR PERIOD OF RECORD 7,906 cfs | 11.96 feet gage height | 08/16/2012 FCDMC Annual Surface Water Report, Water Year 2021 Page 855 Location Map FCDMC Annual Surface Water Report, Water Year 2021 Page 856 WY2021 Events Date of Peak 08/11/2021 08/18/2021 08/18/2021 Peak Gage Height 3.72 4.54 3.05 Peak Discharge (cfs) 1,004 1,492 689 Hydrograph of peak WY 2021 flow event, 08/18/2021 Flood Flow Frequency There is not enough data to compute a flood flow frequency for this gage station. FCDMC Annual Surface Water Report, Water Year 2021 Page 857 Sycamore Creek Fire (Transducer Gage), runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 --3 --4 ----5 --6 --7 8 9 10 11 13 12 13 14 15 16 17 18 49 19 20 21 22 23 24 --25 26 27 --28 --29 ----30 ----31 -------------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 62 0 MEAN 0 0 0 0 0 0 0 0 0 0 2 0 MAX 0 0 0 0 0 0 0 0 0 0 1492 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 0 123 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 62 MEAN 0 MAX 1492 MIN 0 AC_FT 123 FCDMC Annual Surface Water Report, Water Year 2021 Page 858 Sycamore Creek Fire (RADAR Gage), runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 --3 --4 ----5 --6 --7 8 9 10 11 19 12 13 14 15 16 17 18 89 19 20 21 22 23 24 --25 26 27 28 --29 ----30 ----31 -------------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 108 0 MEAN 0 0 0 0 0 0 0 0 0 0 3 0 MAX 0 0 0 0 0 0 0 0 0 0 1487 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 0 215 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 108 MEAN 0 MAX 1487 MIN 0 AC_FT 215 FCDMC Annual Surface Water Report, Water Year 2021 Page 859 Tatum Wash Basin Inflow – ID #58007 Site Data LOCATION Located near Shea Boulevard and 44th Street DRAINAGE AREA 2.17 mi2 STREAM TYPE Engineered Natural Stream JURISDICTION Phoenix, Arizona WATERSHED Middle Indian Bend SECTION/TOWNSHIP/RANGE S30 T3N R4E LATITUDE N 33° 34' 54.1" | +33.58169 LONGITUDE W 111° 59' 04.3" | -111.98453 STREAMGAGE INSTALLATION DATE 06/03/1994 - WY 1994 AVAILABLE PERIOD OF RECORD (POR) 06/03/1994 - Current LENGTH OF AVAILABLE POR DATA DATA 27.33 Years | 9,982 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.10 feet Gage Height ZERO GAGE HEIGHT ELEVATION 1,400.73 feet NAVD88 POINT OF ZERO FLOW 0.0 feet Gage Height EXTREME FOR PERIOD OF RECORD 1,688 cfs | 3.68 feet | 09/08/2014 FCDMC Annual Surface Water Report, Water Year 2021 Page 860 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 861 WY2021 Events Date of Peak Peak Gage Height (feet) Peak Discharge (cfs) None Hydrograph of peak WY 2021 flow event, No runoff recorded in Water Year 2021. Flood Flow Frequency Flood Flow Frequency N=28, HEC-WRC computation (based on 28 years of data) 2-year 5-year 10-year 20-year 50-year 100-year 57 419 1,040 2,060 4,140 6,360 FCDMC Annual Surface Water Report, Water Year 2021 Page 862 Tatum Basin Inflow, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 0 MEAN 0 MAX 0 MIN 0 AC_FT 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 863 Tatum Wash Basin – ID #58507 Site Data LOCATION Located near Shea Boulevard and 44th Street DRAINAGE AREA 2.17 mi2 STREAM TYPE Flood control basin on natural stream JURISDICTION Phoenix, Arizona WATERSHED Middle Indian Bend SECTION/TOWNSHIP/RANGE S30 T3N R4E LATITUDE N 33° 34' 56.8" | +33.58245 LONGITUDE W 111° 59' 01.5" | -111.98376 STREAMGAGE INSTALLATION DATE 05/08/1998 - WY 1998 AVAILABLE PERIOD OF RECORD (POR) 05/08/1998 - Current LENGTH OF AVAILABLE POR DATA DATA 23.40 Years | 8,547 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.05 feet Gage Height ZERO GAGE HEIGHT ELEVATION 1,383.27 feet NAVD88 PZF (LOWER FLAP-GATE) 0.5 feet Gage Height PZF (UPPER FLAP-GATE) 4.5 feet Gage Height PZF (UNCONTROLLED INLET TOWER) 11.6 feet Gage Height SPILLWAY CREST ELEVATION 12.6 feet Gage Height TOP OF BASIN ELEVATION 13.6 feet Gage Height FCDMC Annual Surface Water Report, Water Year 2021 Page 864 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 865 WY2021 Events Date of Peak Peak Gage Height (feet) Peak Volume (ac-ft) Percent Spillway Capacity 08/17/2021 1.42 2.7 8.3 Hydrograph of peak 2021 impoundment event, 08/17/2021 FCDMC Annual Surface Water Report, Water Year 2021 Page 866 Tatum Wash Basin, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 0 MEAN 0 MAX 0 MIN 0 AC_FT 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 867 Tatum Wash Basin, volume data Volume, in acre feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 3 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0 MAX 3 MIN 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 868 Tatum Wash Basin, stage data Depth, in feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 2 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 3 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 4 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 5 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 6 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 7 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 8 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 9 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 10 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 11 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 12 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 13 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 14 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 15 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 16 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 17 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.2 0.1 18 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 19 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 20 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 21 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 22 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 23 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 24 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 25 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 26 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 27 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 28 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 29 0.1 0.1 0.1 0.1 --0.1 0.1 0.1 0.1 0.1 0.1 0.1 30 0.1 0.1 0.1 0.1 --0.1 0.1 0.1 0.1 0.1 0.1 0.1 31 0.1 --0.1 0.1 --0.1 --0.1 --0.1 0.1 -------------------------------------------------------------------------------MEAN 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 MAX 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 1.4 0.1 MIN 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0.05 MAX 1.42 MIN 0.05 FCDMC Annual Surface Water Report, Water Year 2021 Page 869 Tenth Street Wash Basin #1, ID #11007 Site Data LOCATION Near Cave Creek Road and Peoria Avenue DRAINAGE AREA 1.2 mi2 STREAM TYPE Flood control basin on natural stream JURISDICTION Phoenix, Arizona WATERSHED Upper ACDC SECTION/TOWNSHIP/RANGE S28 T3N R3E LATITUDE N 33° 34' 46.8" | +33.57969 LONGITUDE W 112° 03' 17.3" | -112.05476 STREAMGAGE INSTALLATION DATE 11/26/1996 - WY 1997 AVAILABLE PERIOD OF RECORD (POR) 11/26/1996 - Current LENGTH OF AVAILABLE POR DATA 24.85 Years | 9,075 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.33 feet Gage Height STAFF GAGES 0 ZERO GAGE HEIGHT ELEVATION 1,308.78 feet NAVD88 POINT OF ZERO FLOW 0.00 feet Gage Height SPILLWAY CREST ELEVATION 11.5 feet Gage Height TOP OF BASIN ELEVATION 13.2 feet Gage Height FCDMC Annual Surface Water Report, Water Year 2021 Page 870 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 871 WY2021 Events Date of Peak 01/25/2021 01/25/2021 07/23/2021 07/25/2021 07/30/2021 08/11/2021 08/14/2021 08/17/2021 08/18/2021 Peak Gage Height (feet) 0.97 0.70 1.80 0.45 1.10 1.15 1.67 1.07 0.85 Peak Volume (ac-ft) 0.3 0.2 1.1 0.1 0.4 0.4 0.9 0.4 0.3 Hydrograph of peak 2021 impoundment event, 07/23/2021 FCDMC Annual Surface Water Report, Water Year 2021 Page 872 Percent Spillway Capacity 1.8 1.1 5.1 0.6 2.1 2.3 4.5 2.1 1.5 Tenth Street Wash Basin #1, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 1 12 13 1 14 6 15 16 17 1 18 19 20 21 22 23 6 24 2 25 26 27 28 29 --30 --31 --------1 -------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 9 9 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 4 0 0 0 0 0 13 12 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 17 17 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 17 MEAN 0 MAX 13 MIN 0 AC_FT 35 FCDMC Annual Surface Water Report, Water Year 2021 Page 873 Tenth Street Wash Basin #1, volume data Volume, in acre-feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 1 1 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0 MAX 1 MIN 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 874 Tenth Street Wash Basin #1, stage data Depth, in feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 2 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 4 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 5 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 6 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 7 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 8 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 9 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 10 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 11 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.5 0.3 12 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 13 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.4 0.3 14 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 1.1 0.3 15 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 16 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 17 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.6 0.3 18 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.4 0.3 19 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 20 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 21 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 22 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 23 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 1.0 0.3 0.3 24 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.6 0.3 0.3 25 0.3 0.3 0.3 0.4 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 26 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 27 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 28 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 29 0.3 0.3 0.3 0.3 --0.3 0.3 0.3 0.3 0.3 0.3 0.3 30 0.3 0.3 0.3 0.3 --0.3 0.3 0.3 0.3 0.4 0.3 0.3 31 0.3 --0.3 0.3 --0.3 --0.3 --0.5 0.3 -------------------------------------------------------------------------------MEAN 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.4 0.4 0.3 MAX 0.3 0.3 0.3 1.0 0.3 0.3 0.3 0.3 0.3 1.8 1.7 0.3 MIN 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0.34 MAX 1.80 MIN 0.33 FCDMC Annual Surface Water Report, Water Year 2021 Page 875 Tiger Wash, ID #27007 Site Data LOCATION Near Eagle Eye Road about 10 miles north of Salome Road DRAINAGE AREA 85 mi2 STREAM TYPE Natural Stream JURISDICTION Maricopa County, Arizona WATERSHED Lower Centennial SECTION/TOWNSHIP/RANGE S26 T5N R10W LATITUDE N 33° 44' 30.3" | +33.74175 LONGITUDE W 113° 16' 42.8" | -113.27855 STREAMGAGE INSTALLATION DATE 09/15/1999 - WY 1999 AVAILABLE PERIOD OF RECORD (POR) 09/15/1999 - Current LENGTH OF AVAILABLE POR DATA 22.05 Years | 8,052 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 4.73 feet Gage Height STAFF GAGES 0 CREST STAGE GAGES 6 (Continuous Slope Area type) ZERO GAGE HEIGHT ELEVATION 1,866.15 feet NAVD88 POINT OF ZERO FLOW 0.0 feet Gage Height EXTREME FOR PERIOD OF RECORD 4,541 cfs | 9.28 feet | 07/14/2012 EXTREME OUTSIDE PERIOD OF RECORD 7,778 cfs | 10.07 feet | 09/26/1997 FCDMC Annual Surface Water Report, Water Year 2021 Page 876 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 877 WY2021 Events Date of Peak 07/20/2021 08/10/2021 09/01/2021 Peak Gage Height (feet) 5.21 5.31 6.34 Peak Discharge (cfs) 196 231 777 Hydrograph of peak WY 2021 flow event, 09/01/2021 Flood Flow Frequency Flood Flow Frequency N=49, HEC-WRC computation (based on 49 years of data) 2-year 5-year 10-year 20-year 50-year 100-year 1,150 2,750 3,980 5,190 6,700 7,770 NOTE: These results are based on limited data. FCDMC Annual Surface Water Report, Water Year 2021 Page 878 Tiger Wash, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 76 2 3 4 5 6 7 8 9 10 6 11 12 13 14 --15 --16 17 18 19 20 6 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 6 6 76 MEAN 0 0 0 0 0 0 0 0 0 0 0 3 MAX 0 0 0 0 0 0 0 0 0 196 231 777 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 13 11 150 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 88 MEAN 0 MAX 777 MIN 0 AC_FT 174 FCDMC Annual Surface Water Report, Water Year 2021 Page 879 Twin Buttes Wash, ID #73207 Site Data LOCATION Located on Vistancia Blvd. about 2 miles northwest of the Loop 303 DRAINAGE AREA 7.1 mi2 STREAM TYPE Natural JURISDICTION Peoria, Arizona WATERSHED Lower Agua Fria SECTION/TOWNSHIP/RANGE S25 T5N R1W LATITUDE N 33° 44' 18.4" | +33.73843 LONGITUDE W 112° 19' 10.4" | -112.31956 STREAMGAGE INSTALLATION DATE 10/29/2015 - WY 2016 AVAILABLE PERIOD OF RECORD (POR) 12/09/2015 - Current LENGTH OF AVAILABLE POR DATA 5.81 Years | 2,123 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.75 feet Gage Height STAFF GAGES None CREST STAGE GAGES 1 ZERO GAGE HEIGHT ELEVATION 1,346.36 feet NAVD88 POINT OF ZERO FLOW 0.2 feet Gage Height EXTREME FOR PERIOD OF RECORD 714 cfs | 3.93 feet Gage Height | 08/12/2018 FCDMC Annual Surface Water Report, Water Year 2021 Page 880 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 881 WY2021 Events Date of Peak 07/03/2021 07/16/2021 07/25/2021 Peak Gage Height 1.72 2.49 1.37 Peak Discharge (cfs) 109 258 55 Hydrograph of peak WY 2021 flow event, 07/16/2021 Flood Flow Frequency There is not enough data to compute a flood flow frequency for this gage station. FCDMC Annual Surface Water Report, Water Year 2021 Page 882 Twin Buttes Wash, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 7 4 5 6 7 8 9 10 11 12 13 14 15 --16 62 17 --18 19 --20 --21 22 23 24 1 25 5 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 21 0 0 MEAN 0 0 0 0 0 0 0 0 0 1 0 0 MAX 0 0 0 0 94 0 0 0 0 258 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 42 0 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 21 MEAN 0 MAX 258 MIN 0 AC_FT 42 FCDMC Annual Surface Water Report, Water Year 2021 Page 883 University Drive at 62nd Street Basin, ID #34607 Site Data LOCATION On University Drive east of Recker Road DRAINAGE AREA Undetermined STREAM TYPE Flood control basin JURISDICTION Mesa, Arizona WATERSHED Upper East Maricopa Floodway SECTION/TOWNSHIP/RANGE S13 T1N R6E LATITUDE N 33° 25' 23.6" | +33.42321 LONGITUDE W 111° 41' 47.3" | -111.69647 STREAMGAGE INSTALLATION DATE 12/22/2016 – WY2017 AVAILABLE PERIOD OF RECORD (POR) 12/22/2016 – Current LENGTH OF AVAILABLE POR DATA 4.77 Years | 1,744 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.25 feet Gage Height STAFF GAGES 0 ZERO GAGE HEIGHT ELEVATION 1,392.00 feet NAVD88 POINT OF ZERO FLOW 0.2 feet Gage Height SPILLWAY CREST ELEVATION 12.0 feet Gage Height TOP OF BASIN ELEVATION 12.5 feet Gage Height FCDMC Annual Surface Water Report, Water Year 2021 Page 884 Location Map FCDMC Annual Surface Water Report, Water Year 2021 Page 885 WY2021 Events Date of Peak 01/24/2021 01/25/2021 07/23/2021 07/24/2021 08/11/2021 08/12/2021 08/14/2021 08/16/2021 08/17/2021 09/01/2021 09/01/2021 Peak Gage Height (feet) 1.19 2.24 3.07 2.49 4.74 5.36 4.12 3.29 1.79 2.62 2.57 Peak Volume (ac-ft) 0.01 0.04 0.10 0.06 1.71 4.11 0.33 0.13 0.02 0.06 0.06 Hydrograph of peak 2021 impoundment event, 08/12/2021 FCDMC Annual Surface Water Report, Water Year 2021 Page 886 Percent Spillway Capacity 0.0 0.2 0.4 0.2 8.2 16.7 1.6 0.5 0.1 0.3 0.3 University Drive at 62nd Street Basin, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 1 2 3 4 5 6 7 8 9 10 11 3 12 5 13 1 14 2 15 16 1 17 18 19 20 21 22 23 3 24 1 25 1 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 1 0 0 0 0 0 4 14 1 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 1 3 0 0 0 0 0 4 6 3 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 2 0 0 0 0 0 8 27 3 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 20 MEAN 0 MAX 6 MIN 0 AC_FT 40 FCDMC Annual Surface Water Report, Water Year 2021 Page 887 University Drive at 62nd Street Basin, volume data Volume, in acre-feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 3 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 4 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0 MAX 4 MIN 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 888 University Drive at 62nd Street Basin, stage data Depth, in feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 1.0 2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.6 3 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 4 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 5 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 6 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 7 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 8 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 9 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 10 0.2 0.2 0.4 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 11 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 2.6 0.2 12 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 4.5 0.2 13 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.9 0.2 14 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.3 2.1 0.2 15 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.3 0.2 0.3 0.2 16 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 1.3 0.2 17 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.5 0.2 18 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 19 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 20 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 21 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 22 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.4 0.2 0.2 23 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 2.3 0.2 0.2 24 0.2 0.2 0.2 0.4 0.2 0.2 0.2 0.2 0.2 1.0 0.2 0.2 25 0.2 0.2 0.2 0.8 0.2 0.2 0.2 0.2 0.2 0.3 0.2 0.2 26 0.2 0.2 0.2 0.4 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 27 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 28 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 29 0.2 0.2 0.2 0.2 --0.2 0.2 0.2 0.2 0.2 0.2 0.2 30 0.2 0.2 0.2 0.2 --0.2 0.2 0.2 0.2 0.2 0.2 0.2 31 0.2 --0.2 0.2 --0.2 --0.2 --0.2 0.2 -------------------------------------------------------------------------------MEAN 0.2 0.2 0.3 0.3 0.2 0.2 0.2 0.2 0.3 0.3 0.6 0.3 MAX 0.2 0.2 0.9 2.2 0.2 0.2 0.2 0.2 0.6 3.1 5.4 2.6 MIN 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0.29 MAX 5.36 MIN 0.25 FCDMC Annual Surface Water Report, Water Year 2021 Page 889 Upper Trilby Wash, ID #73807 Site Data LOCATION Located about 3 miles north of Castle Hot Springs Road DRAINAGE AREA 3.0 mi2 STREAM TYPE Natural Stream JURISDICTION Yavapai County, Arizona WATERSHED Trilby SECTION/TOWNSHIP/RANGE S12 T7N R3W LATITUDE N 33° 57' 37.5" | +33.96042 LONGITUDE W 112° 31' 45.3" | -112.52925 STREAMGAGE INSTALLATION DATE 09/26/2001 - WY 2001 AVAILABLE PERIOD OF RECORD (POR) 09/26/2001 - Current LENGTH OF AVAILABLE POR DATA 20.01 Years | 7,310 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.90 feet Gage Height STAFF GAGES 0 CREST STAGE GAGES 1 ZERO GAGE HEIGHT ELEVATION 3,030.53 feet NAVD88 POINT OF ZERO FLOW 1.0 feet Gage Height EXTREME FOR PERIOD OF RECORD 412 cfs | 2.40 feet | 07/18/2015 FCDMC Annual Surface Water Report, Water Year 2021 Page 890 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 891 WY2021 Events Date of Peak Peak Gage Height Peak Discharge (cfs) None Hydrograph of peak WY 2021 flow event, No flow recorded during Water Year 2021. Flood Flow Frequency Flood Flow Frequency N=20, HEC-WRC computation (based on 20 years of data) 2-year 5-year 10-year 20-year 50-year 100-year 23 103 223 418 841 1,330 NOTE: These results are based on very limited data. FCDMC Annual Surface Water Report, Water Year 2021 Page 892 Upper Trilby Wash, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 --3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 --18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 0 MEAN 0 MAX 0 MIN 0 AC_FT 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 893 UPRR Underpass at First Avenue, ID #3107 Site Data LOCATION Near First Avenue and Jackson Street DRAINAGE AREA None STREAM TYPE Roadway Underpass JURISDICTION Phoenix, Arizona WATERSHED Lower Arizona Canal Diversion Channel SECTION/TOWNSHIP/RANGE S08 T1N R3E LATITUDE N 33° 26' 39.4" | +33.44429 LONGITUDE W 112° 04' 29.0" | -112.07472 STREAMGAGE INSTALLATION DATE 05/30/2017 – WY2017 AVAILABLE PERIOD OF RECORD (POR) 05/30/2017 – Current LENGTH OF AVAILABLE POR DATA 4.34 Years | 1,585 Days DATA GAPS IN POR None STAGE GAGE ELEVATION -9.83 feet Gage Height STAFF GAGES 0 ZERO GAGE HEIGHT ELEVATION 0.00 feet Gage Height MINIMUM ROADWAY ELEVATION 0.0 feet Gage Height FCDMC Annual Surface Water Report, Water Year 2021 Page 894 Location Map FCDMC Annual Surface Water Report, Water Year 2021 Page 895 WY2021 Events Date of Peak 12/10/2020 08/13/2021 08/14/2021 Peak Gage Height (feet) -2.40 1.09 5.64 Peak Volume (ac-ft) 0.0 0.2 3.8 Hydrograph of peak 2021 impoundment event, 08/14/2021 FCDMC Annual Surface Water Report, Water Year 2021 Page 896 Percent Spillway Capacity UPRR Underpass at First Avenue, stage data Depth, in feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 -8.1 -8.3 -9.7 -9.6 -8.7 -9.6 -8.8 -8.6 -9.6 -9.5 -6.5 -5.3 2 -8.1 -8.3 -9.7 -9.6 -8.9 -9.6 -8.6 -8.6 -9.6 -9.5 -6.6 -5.0 3 -8.1 -8.3 -9.7 -9.6 -8.9 -9.6 -8.6 -8.6 -9.6 -8.6 -6.6 -5.0 4 -8.1 -9.0 -9.7 --- -8.9 -9.6 -8.7 -8.7 -9.6 -6.8 -6.7 -5.0 5 -8.1 -9.7 -9.7 -9.6 -6.4 -9.6 -8.7 -8.7 -9.6 -7.6 -6.8 -5.0 6 -8.1 -9.7 -9.7 -9.6 -7.6 -9.6 -8.7 -8.7 -9.6 -8.1 -6.8 -5.1 7 -8.1 -9.7 -9.7 -9.6 -8.2 -9.6 -8.8 -8.7 -9.6 -8.4 -6.8 -5.1 8 -8.1 -9.7 -9.7 -9.6 -8.6 -9.6 -8.8 -8.8 -9.6 -8.6 -6.9 -5.1 9 -8.1 -9.7 -9.7 -9.6 -8.7 -9.6 -8.5 -8.9 -9.6 -8.8 -6.9 -5.1 10 -8.1 -9.7 -6.5 -9.6 -8.8 -9.6 -8.2 -9.0 -9.6 -8.9 -6.5 -5.1 11 -8.1 -9.7 -7.3 -9.6 -8.8 -9.6 -8.4 -9.2 -9.6 -8.9 -6.6 -5.1 12 -8.1 -9.7 -8.2 -9.6 -8.9 -9.0 -8.4 -9.3 -9.6 -8.9 -6.8 -5.1 13 -8.1 -9.8 -8.7 -9.6 -8.9 -7.3 -8.4 -9.5 -9.6 -9.0 -6.6 -5.1 14 -8.2 -9.8 -9.1 -9.6 -9.0 -8.1 -8.5 -9.5 -9.6 -6.9 2.9 -5.2 15 -8.2 -9.8 -9.4 -9.6 -9.0 -8.6 -8.5 -9.5 -9.6 -6.8 -1.7 -5.1 16 -8.2 -9.8 -9.6 -9.7 -9.1 -8.8 -8.5 -9.5 -9.7 -7.0 -2.8 -5.1 17 -8.2 -9.7 -9.6 -9.7 -9.2 -8.9 -8.5 -9.5 -9.7 -7.1 -3.4 -5.1 18 -8.2 -9.8 -9.6 -9.7 -9.2 -8.9 -8.5 -9.5 -9.7 -7.2 -3.9 -5.1 19 -8.2 -9.8 -9.6 -9.7 -9.3 -9.0 -8.5 -9.5 -9.7 -7.3 -4.2 -5.1 20 -8.2 -9.9 -9.6 -9.7 -9.3 -9.1 -8.5 -9.5 -9.8 -7.4 -4.5 -5.1 21 -8.2 -9.9 -9.6 -9.7 -9.4 -9.1 -8.6 -9.5 -9.8 -7.5 -4.7 -5.1 22 -8.2 -9.9 -9.6 -9.7 -9.4 -9.2 -8.6 -9.5 -9.6 -7.6 -4.9 -5.1 23 -8.2 -9.9 -9.6 -9.7 -9.5 -9.2 -8.6 -9.6 -8.8 -6.8 -5.0 -5.1 24 -8.2 -9.9 -9.6 -9.6 -9.5 -9.2 -8.6 -9.6 -8.9 -6.4 -5.1 -5.1 25 -8.2 -9.8 -9.6 -8.4 -9.5 -9.3 -8.6 -9.6 -9.1 -6.3 -5.2 -5.1 26 -8.2 -9.8 -9.6 -7.5 -9.5 -9.3 -8.6 -9.6 -9.1 -6.4 -5.3 -5.2 27 -8.2 -9.7 -9.6 -8.1 -9.5 -9.3 -8.6 -9.6 -9.2 -6.6 -5.3 -5.2 28 -8.2 -9.7 -9.6 -8.5 -9.6 -9.3 -8.6 -9.6 -9.3 -6.7 -5.3 -5.2 29 -8.3 -9.7 -9.6 -8.4 --- -9.4 -8.6 -9.6 -9.3 -6.8 -5.3 -5.2 30 -8.3 -9.7 -9.6 -7.9 --- -9.4 -8.6 -9.6 -9.4 -6.8 -5.3 -5.2 31 -8.3 --- -9.6 -8.4 --- -9.4 --- -9.6 --- -6.2 -5.4 -------------------------------------------------------------------------------MEAN -8.2 -9.6 -9.4 -9.3 -8.9 -9.2 -8.6 -9.3 -9.5 -7.6 -5.2 -5.1 MAX -8.1 -8.3 -2.4 -6.4 -5.7 -6.8 -8.1 -8.6 -8.7 -3.6 5.7 -5.0 MIN -8.3 -9.9 -9.7 -9.7 -9.6 -9.6 -9.5 -9.6 -9.8 -9.5 -6.9 -5.3 -----------------------------------------------------------------------------WTR YR 2021 MEAN -8.32 MAX 5.67 MIN -9.94 FCDMC Annual Surface Water Report, Water Year 2021 Page 897 UPRR Underpass at Central Avenue, ID #3207 Site Data LOCATION Near Central Avenue and Jackson Street DRAINAGE AREA None STREAM TYPE Roadway Underpass JURISDICTION Phoenix, Arizona WATERSHED Lower Arizona Canal Diversion Channel SECTION/TOWNSHIP/RANGE S08 T1N R3E LATITUDE N 33° 26' 38.9" | +33.44413 LONGITUDE W 112° 04' 25.5" | -112.07376 STREAMGAGE INSTALLATION DATE 05/30/2017 – WY2017 AVAILABLE PERIOD OF RECORD (POR) 05/30/2017 – Current LENGTH OF AVAILABLE POR DATA 4.34 Years | 1,585 Days DATA GAPS IN POR None STAGE GAGE ELEVATION -5.00 feet Gage Height STAFF GAGES 0 ZERO GAGE HEIGHT ELEVATION 0.00 feet Gage Height MINIMUM ROADWAY ELEVATION 0.0 feet Gage Height FCDMC Annual Surface Water Report, Water Year 2021 Page 898 Location Map FCDMC Annual Surface Water Report, Water Year 2021 Page 899 WY2021 Events Date of Peak Peak Gage Height (feet) Peak Volume (ac-ft) 08/13/2021 -1.81 0.0 Hydrograph of peak 2021 impoundment event, 08/13/2021 FCDMC Annual Surface Water Report, Water Year 2021 Page 900 Percent Spillway Capacity UPRR Underpass at Central Avenue, stage data Depth, in feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 -5.0 -5.0 -5.0 -4.4 -4.0 -4.8 -4.7 -4.9 -4.8 -4.9 -3.6 -3.4 2 -5.0 -5.0 -5.0 -4.5 -4.0 -4.8 -4.7 -4.9 -4.8 -4.9 -3.6 -2.9 3 -5.0 -5.0 -5.0 -4.5 -4.1 -4.8 -4.7 -4.9 -4.8 -4.6 -3.6 -2.9 4 -5.0 -5.0 -5.0 -4.6 -4.2 -4.9 -4.7 -4.9 -4.8 -3.3 -3.6 -2.9 5 -5.0 -5.0 -5.0 -4.6 -4.3 -4.9 -4.8 -4.9 -4.8 -3.4 -3.6 -3.0 6 -5.0 -5.0 -5.0 -4.6 -4.3 -4.9 -4.8 -4.9 -4.8 -3.4 -3.6 -3.0 7 -5.0 -5.0 -5.0 -4.7 -4.4 -4.9 -4.8 -4.9 -4.8 -3.4 -3.6 -3.0 8 -5.0 -5.0 -5.0 -4.7 -4.4 -4.9 -4.8 -4.9 -4.8 -3.5 -3.6 -3.0 9 -5.0 -5.0 -5.0 -4.7 -4.5 -4.9 -4.8 -4.9 -4.9 -3.4 -3.6 -3.0 10 -5.0 -5.0 -3.7 -4.7 -4.5 -4.9 -4.8 -4.9 -4.9 -3.4 -3.5 -3.0 11 -5.0 -5.0 -3.1 -4.7 -4.6 -4.9 -4.8 -4.9 -4.9 -3.4 -3.5 -3.0 12 -5.0 -5.0 -3.2 -4.8 -4.6 -4.1 -4.8 -4.9 -4.9 -3.5 -3.5 -3.1 13 -5.0 -5.0 -3.3 -4.8 -4.7 -3.3 -4.8 -4.9 -4.9 -3.5 -3.5 -3.1 14 -5.0 -5.0 -3.4 -4.8 -4.7 -3.6 -4.8 -4.9 -4.9 -3.3 -3.4 -3.1 15 -5.0 -5.0 -3.4 -4.8 -4.7 -3.8 -4.8 -4.9 -4.9 -3.2 -3.4 -3.0 16 -5.0 -5.0 -3.5 -4.8 -4.7 -3.9 -4.8 -4.9 -4.9 -3.2 -3.3 -3.0 17 -5.0 -5.0 -3.6 -4.8 -4.7 -4.0 -4.8 -4.9 -4.9 -3.3 -2.8 -3.0 18 -5.0 -5.0 -3.7 -4.8 -4.7 -4.1 -4.8 -5.0 -4.9 -3.3 -3.1 -3.0 19 -5.0 -5.0 -3.8 -4.8 -4.8 -4.2 -4.8 -4.9 -4.9 -3.3 -3.4 -2.9 20 -5.0 -5.0 -3.8 -4.8 -4.8 -4.2 -4.8 -4.9 -4.9 -3.4 -3.4 -2.9 21 -5.0 -5.0 -3.9 -4.8 -4.8 -4.3 -4.8 -4.9 -4.9 -3.4 -3.4 -2.9 22 -5.0 -5.0 -4.0 -4.8 -4.8 -4.3 -4.9 -5.0 -4.9 -3.4 -3.4 -2.9 23 -5.0 -5.0 -4.0 -4.8 -4.8 -4.4 -4.8 -5.0 -4.9 -3.3 -3.4 -2.9 24 -5.0 -5.0 -4.1 -4.4 -4.8 -4.4 -4.8 -5.0 -4.9 -3.2 -3.4 -2.9 25 -5.0 -5.0 -4.1 -3.9 -4.8 -4.5 -4.9 -5.0 -4.9 -3.3 -3.4 -2.9 26 -5.0 -5.0 -4.2 -3.4 -4.8 -4.5 -4.9 -4.8 -4.9 -3.5 -3.4 -3.2 27 -5.0 -5.0 -4.2 -3.5 -4.8 -4.6 -4.9 -4.8 -4.9 -3.5 -3.5 -3.6 28 -5.0 -5.0 -4.3 -3.6 -4.8 -4.6 -4.9 -4.8 -4.9 -3.5 -3.5 -3.6 29 -5.0 -5.0 -4.3 -3.5 --- -4.7 -4.9 -4.8 -4.9 -3.5 -3.5 -3.6 30 -5.0 -5.0 -4.4 -3.5 --- -4.7 -4.9 -4.8 -4.9 -3.5 -3.5 -3.6 31 -5.0 --- -4.4 -3.8 --- -4.7 --- -4.8 --- -3.6 -3.5 -------------------------------------------------------------------------------MEAN -5.0 -5.0 -4.2 -4.5 -4.6 -4.5 -4.8 -4.9 -4.9 -3.5 -3.5 -3.1 MAX -5.0 -5.0 -2.8 -2.9 -4.0 -2.8 -4.7 -4.7 -4.8 -2.8 -1.8 -2.8 MIN -5.0 -5.0 -5.0 -4.8 -4.8 -4.9 -4.9 -5.0 -5.0 -5.0 -3.8 -3.7 -----------------------------------------------------------------------------WTR YR 2021 MEAN -4.36 MAX -1.81 MIN -5.00 FCDMC Annual Surface Water Report, Water Year 2021 Page 901 US60 at Gold Canyon, ID #36907 Site Data LOCATION Located near Superstition Mountain Drive and US60 in Gold Canyon DRAINAGE AREA 9.25 mi2 STREAM TYPE Natural wash flows through a culvert JURISDICTION Pinal County, Arizona WATERSHED Upper East Maricopa Floodway SECTION/TOWNSHIP/RANGE S07 T1S R9E LATITUDE N 33° 21' 53.5" | +33.36486 LONGITUDE W 111° 28' 32.8" | -111.47579 STREAMGAGE INSTALLATION DATE 05/11/2016 - WY 2016 AVAILABLE PERIOD OF RECORD (POR) 05/11/2016 - Current LENGTH OF AVAILABLE POR DATA 5.39 Years | 1,969 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.15 feet Gage Height STAFF GAGES None CREST STAGE GAGES One ZERO GAGE HEIGHT ELEVATION 1,739.03 feet NAVD88 POINT OF ZERO FLOW 0.0 feet Gage Height EXTREME FOR PERIOD OF RECORD 1,258 cfs | 4.06 feet GH | 08/09/2016 FCDMC Annual Surface Water Report, Water Year 2021 Page 902 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 903 WY2021 Events Date of Peak 08/13/2021 08/14/2021 08/17/2021 Peak Gage Height 0.80 0.70 1.00 Peak Discharge (cfs) 10 4 47 Hydrograph of peak WY 2021 flow event, 08/17/2021 Flood Flow Frequency There is not enough data to compute a flood flow frequency for this gage station. FCDMC Annual Surface Water Report, Water Year 2021 Page 904 US60 at Gold Canyon, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 --6 7 8 9 --10 11 12 13 14 15 16 17 --18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 47 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 0 MEAN 0 MAX 47 MIN 0 AC_FT 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 905 Vekol Wash, ID #74507 Site Data LOCATION Near I-8 and Vekol Valley Road DRAINAGE AREA 147.7 mi2 STREAM TYPE Natural Stream JURISDICTION Maricopa County, Arizona WATERSHED Vekol SECTION/TOWNSHIP/RANGE S03 T7S R1E LATITUDE N 32° 50' 35.3" | +32.84313 LONGITUDE W 112° 15' 07.5" | -112.25207 STREAMGAGE INSTALLATION DATE 03/07/1990 - WY 1990 AVAILABLE PERIOD OF RECORD (POR) 03/07/1990 - Current LENGTH OF AVAILABLE POR DATA 31.57 Years | 11,531 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 4.95 feet Gage Height STAFF GAGES 0 CREST STAGE GAGES 2 (at gage cross section) ZERO GAGE HEIGHT ELEVATION 1,719.89 feet NAVD88 POINT OF ZERO FLOW 4.0 feet Gage Height EXTREME FOR PERIOD OF RECORD 10,100 cfs | 10.10 feet | 08/27/2010 FCDMC Annual Surface Water Report, Water Year 2021 Page 906 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 907 WY2021 Events Date of Peak 07/22/2021 07/23/2021 07/31/2021 08/10/2021 08/11/2021 08/12/2021 Peak Gage Height (feet) 6.09 5.72 5.52 6.94 5.80 6.19 Peak Discharge (cfs) 512 314 244 1,314 350 581 Hydrograph of peak WY 2021 flow event, 08/10/2021 Flood Flow Frequency Flood Flow Frequency N=32, HEC-WRC computation (based on 32 years of data) 2-year 5-year 10-year 20-year 50-year 100-year 971 2,630 4,300 6,340 9,670 12,700 NOTE: These results are based on limited data. FCDMC Annual Surface Water Report, Water Year 2021 Page 908 Vekol Wash, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 --3 4 --5 6 7 ----8 9 10 85 11 31 12 29 13 14 15 8 16 --17 --18 --19 --20 21 22 244 23 33 --24 25 26 27 28 29 --30 --31 --------28 -------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 96 146 0 MEAN 0 0 0 0 0 0 0 0 0 3 5 0 MAX 0 0 0 0 0 0 0 0 0 512 1314 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 191 289 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 242 MEAN 1 MAX 1314 MIN 0 AC_FT 480 FCDMC Annual Surface Water Report, Water Year 2021 Page 909 Vineyard FRS, ID #37007 Site Data LOCATION Located south of Apache Junction east of Ironwood Road DRAINAGE AREA 53.7 mi2 STREAM TYPE Dam of natural drainage JURISDICTION Pinal County, Arizona WATERSHED Upper East Maricopa Floodway SECTION/TOWNSHIP/RANGE S09 T1S R8E LATITUDE N 33° 21' 03.3" | +33.35091 LONGITUDE W 111° 32' 34.2" | -111.54282 STREAMGAGE INSTALLATION DATE 11/02/1983 - WY 1984 AVAILABLE PERIOD OF RECORD (POR) 11/09/1987 - Current LENGTH OF AVAILABLE POR DATA 33.89 Years | 12,380 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.20 feet Gage Height STAFF GAGES 5 ZERO GAGE HEIGHT ELEVATION 1,564.14 feet NAVD88 POINT OF ZERO FLOW 0.00 feet Gage Height SPILLWAY ELEVATION 11.3 feet Gage Height (South Spillway) TOP OF DAM ELEVATION 16.2 feet Gage Height FCDMC Annual Surface Water Report, Water Year 2021 Page 910 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 911 WY2021 Events* Date of Peak Peak Gage Height (feet) Peak Volume (ac-ft) 07/25/2021 3.83 802.5 08/11/2021 1.52 233.9 08/14/2021 3.03 574.6 08/17/2021 4.26 934.0 *NOTE: Due to unfinished construction, peak volumes are greater than actual. Hydrograph of peak 2021 impoundment event, 08/17/2021 FCDMC Annual Surface Water Report, Water Year 2021 Page 912 Percent Spillway Capacity 17.3 5.3 12.4 20.0 Vineyard FRS, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 4 12 1 13 14 40 15 22 16 6 17 69 18 43 19 19 20 8 21 3 22 1 23 19 24 37 25 62 26 41 27 17 28 5 29 --2 30 --1 31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 183 216 0 MEAN 0 0 0 0 0 0 0 0 0 6 7 0 MAX 0 0 0 0 0 0 0 0 0 71 88 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 364 428 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 399 MEAN 1 MAX 88 MIN 0 AC_FT 792 FCDMC Annual Surface Water Report, Water Year 2021 Page 913 Vineyard FRS, volume data Volume, in acre-feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 70 12 25 13 14 491 15 295 16 105 17 776 18 521 19 266 20 126 21 68 22 26 23 251 24 449 25 716 26 507 27 242 28 85 29 --56 30 --17 31 ---------------------------------------------------------------------------------------MEAN 0 0 0 0 0 0 0 0 0 75 89 0 MAX 0 0 0 0 0 0 0 0 0 803 956 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 14 MAX 956 MIN 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 914 Vineyard FRS, stage data Depth, in feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 3 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 4 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 5 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 6 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 7 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 8 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 9 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 10 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 11 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.6 0.2 12 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 13 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 14 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 2.7 0.2 15 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 1.8 0.2 16 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.8 0.2 17 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 3.7 0.2 18 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 2.8 0.2 19 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 1.7 0.2 20 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.9 0.2 21 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.5 0.2 22 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.3 0.2 23 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 1.6 0.2 0.2 24 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 2.4 0.2 0.2 25 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 3.5 0.2 0.2 26 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 2.8 0.2 0.2 27 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 1.5 0.2 0.2 28 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.6 0.2 0.2 29 0.2 0.2 0.2 0.2 --0.2 0.2 0.2 0.2 0.4 0.2 0.2 30 0.2 0.2 0.2 0.2 --0.2 0.2 0.2 0.2 0.2 0.2 0.2 31 0.2 --0.2 0.2 --0.2 --0.2 --0.2 0.2 -------------------------------------------------------------------------------MEAN 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.6 0.6 0.2 MAX 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 3.8 4.3 0.2 MIN 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0.27 MAX 4.33 MIN 0.20 FCDMC Annual Surface Water Report, Water Year 2021 Page 915 Vulture Mine Road, ID #47007 Site Data LOCATION At Vulture Mine Road and Steinway Drive DRAINAGE AREA 0.13 mi2 STREAM TYPE Culvert - Natural Stream JURISDICTION Wickenburg, Arizona WATERSHED Lower Hassayampa SECTION/TOWNSHIP/RANGE S15 T7N R5W LATITUDE N 33° 57' 08.4" | +33.95233 LONGITUDE W 112° 46' 18.4" | -112.77179 STREAMGAGE INSTALLATION DATE 10/25/2005 - WY 2006 AVAILABLE PERIOD OF RECORD (POR) 10/25/2005 - Current LENGTH OF AVAILABLE POR DATA 15.93 Years | 5,820 Days DATA GAPS IN POR None STAGE GAGE TYPE Pressure Transducer STAGE GAGE ELEVATION 0.70 feet Gage Height STAFF GAGES 1 CREST STAGE GAGES 1 ZERO GAGE HEIGHT ELEVATION 2,311.45 feet NAVD88 POINT OF ZERO FLOW 1.53 feet Gage Height EXTREME FOR PERIOD OF RECORD 159 cfs | 3.58 feet | 08/03/2014 FCDMC Annual Surface Water Report, Water Year 2021 Page 916 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 917 WY2021 Events Date of Peak Peak Gage Height Peak Discharge (cfs) None Hydrograph of peak WY 2021 flow event, No runoff recorded during Water Year 2021. Flood Flow Frequency There is not enough data to compute a flood flow frequency for this gage station. FCDMC Annual Surface Water Report, Water Year 2021 Page 918 Vulture Mine Road, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 --26 --27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 9 0 0 0 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 18 0 0 0 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 18 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 9 MEAN 0 MAX 18 MIN 0 AC_FT 18 FCDMC Annual Surface Water Report, Water Year 2021 Page 919 Wagner Wash at Sun Valley Parkway, ID #44707 Site Data LOCATION On Sun Valley Parkway near the Bell Road alignment DRAINAGE AREA 27.7 mi2 STREAM TYPE Culvert - Natural Stream JURISDICTION Buckeye, Arizona WATERSHED Lower Hassayampa SECTION/TOWNSHIP/RANGE S05 T3N R4W LATITUDE N 33° 38' 07.0" | +33.63527 LONGITUDE W 112° 41' 25.9" | -112.69053 STREAMGAGE INSTALLATION DATE 02/16/2017 – WY2017 AVAILABLE PERIOD OF RECORD (POR) 02/16/2017 – Current LENGTH OF AVAILABLE POR DATA 4.62 Years | 1,688 Days DATA GAPS IN POR None STAGE GAGE TYPE Pressure Transducer STAGE GAGE ELEVATION 0.05 feet Gage Height STAFF GAGES 0 CREST STAGE GAGES 1 ZERO GAGE HEIGHT ELEVATION 1,434.80 feet NAVD88 POINT OF ZERO FLOW 0.0 feet Gage Height EXTREME FOR PERIOD OF RECORD 1,358 cfs | 2.97 feet Gage Height | 08/16/2018 FCDMC Annual Surface Water Report, Water Year 2021 Page 920 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 921 WY2021 Events Date of Peak Peak Gage Height 07/31/2021 2.70 Peak Discharge (cfs) ` 917 Hydrograph of peak WY 2021 flow event, 07/31/2021 Flood Flow Frequency There is not enough data to compute a flood flow frequency for this gage station. FCDMC Annual Surface Water Report, Water Year 2021 Page 922 Wagner Wash at Sun Valley Parkway, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 --18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 --------11 -------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 11 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 917 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 22 0 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 11 MEAN 0 MAX 917 MIN 0 AC_FT 22 FCDMC Annual Surface Water Report, Water Year 2021 Page 923 Waterman Wash at Rainbow Valley Road, ID #83307 Site Data LOCATION At Rainbow Valley Road and Queen Creek Road DRAINAGE AREA 362 mi2 STREAM TYPE Natural Stream JURISDICTION Goodyear, Arizona WATERSHED Waterman SECTION/TOWNSHIP/RANGE S10 T2S R2W LATITUDE N 33° 15' 42.2" | +33.26173 LONGITUDE W 112° 26' 38.5" | -112.44404 STREAMGAGE INSTALLATION DATE 03/18/1999 - WY 1999 AVAIALBLE PERIOD OF RECORD 03/18/1999 - Current LENGTH OF AVAILABLE POR DATA 22.54 Years | 8,233 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 1.00 feet Gage Height STAFF GAGES 1 CREST STAGE GAGES 1 ZERO GAGE HEIGHT ELEVATION 1,009.85 feet NAVD88 POINT OF ZERO FLOW 0.0 feet Gage Height EXTREME FOR PERIOD OF RECORD 5,713 cfs | 10.82 feet | 07/30/2016 FCDMC Annual Surface Water Report, Water Year 2021 Page 924 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 925 WY2021 Events Date of Peak 07/25/2021 08/11/2021 08/14/2021 08/18/2021 Peak Gage Height (feet) 4.66 2.51 2.04 1.29 Peak Discharge (cfs) 618 145 84 19 Hydrograph of peak WY 2021 flow event, 07/25/2021 Flood Flow Frequency Flood Flow Frequency N=23, HEC-WRC computation (based on 23 years of data) 2-year 5-year 10-year 20-year 50-year 100-year 670 2,130 3,350 4,530 5,960 6,900 NOTE: These results are based on very limited data. FCDMC Annual Surface Water Report, Water Year 2021 Page 926 Waterman Wash, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 --6 7 8 9 10 11 16 12 8 13 14 10 15 16 17 18 1 19 20 21 22 23 24 25 85 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 85 36 0 MEAN 0 0 0 0 0 0 0 0 0 3 1 0 MAX 0 0 0 0 0 0 0 0 0 618 145 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 168 71 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 120 MEAN 0 MAX 618 MIN 0 AC_FT 239 FCDMC Annual Surface Water Report, Water Year 2021 Page 927 Weekes Wash at Baseline Road, ID #39207 Site Data LOCATION Baseline Road between Idaho and Tomahawk Roads DRAINAGE AREA 11.9 mi2 STREAM TYPE Engineered channel of natural stream JURISDICTION Apache Junction, Arizona WATERSHED Upper East Maricopa Floodway SECTION/TOWNSHIP/RANGE S04 T1S R8E LATITUDE N 33° 22' 43.7" | +33.37881 LONGITUDE W 111° 32' 15.1" | -111.53752 STREAMGAGE INSTALLATION DATE 05/27/2008 - WY 2008 AVAILABLE PERIOD OF RECORD (POR) 05/27/2008 - Current LENGTH OF AVAILABLE POR DATA 13.35 Years | 4,875 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.20 feet Gage Height STAFF GAGES 0 CREST STAGE GAGES 0 ZERO GAGE HEIGHT ELEVATION 1,620.36 feet NAVD88 POINT OF ZERO FLOW 0.00 feet Gage Height EXTREME FOR PERIOD OF RECORD 1,624 cfs | 7.24 feet Gage Height | 07/24/2017 FCDMC Annual Surface Water Report, Water Year 2021 Page 928 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 929 WY2021 Events Date of Peak 07/22/2021 07/24/2021 08/10/2021 08/11/2021 08/14/2021 08/17/2021 09/02/2021 Peak Gage Height 0.92 0.77 0.44 0.74 0.84 0.84 0.44 Peak Discharge (cfs) 90 68 28 63 78 78 28 Hydrograph of peak WY 2021 flow event, 07/22/2021 Flood Flow Frequency Flood Flow Frequency N=14, HEC-WRC computation (based on 14 years of data) 2-year 5-year 10-year 20-year 50-year 100-year 259 1,050 1,960 3,130 5,020 6,690 FCDMC Annual Surface Water Report, Water Year 2021 Page 930 Weekes Wash at Baseline Road, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 2 3 4 5 6 7 8 9 10 1 11 9 12 13 1 14 10 15 16 3 17 4 18 19 20 21 22 3 23 9 24 5 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 17 28 2 MEAN 0 0 0 0 0 0 0 0 0 1 1 0 MAX 0 0 0 0 0 0 0 0 0 90 78 28 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 33 55 4 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 47 MEAN 0 MAX 90 MIN 0 AC_FT 92 FCDMC Annual Surface Water Report, Water Year 2021 Page 931 White Tanks FRS #3, ID #87307 Site Data LOCATION Located on the eastern foothills of the White Tank Mountains, north of Northern Avenue DRAINAGE AREA 20.5 mi2 STREAM TYPE Impounding of natural drainage JURISDICTION Maricopa County, Arizona WATERSHED White Tanks B SECTION/TOWNSHIP/RANGE S09 T2N R2W LATITUDE N 33° 31' 56.0" | +33.53322 LONGITUDE W 112° 28' 19.2" | -112.47199 STREAMGAGE INSTALLATION DATE 03/12/1986 - WY 1986 AVAIALBLE PERIOD OF RECORD 01/01/1988 - Current LENGTH OF AVAILABLE POR DATA 33.75 Years | 12,327 Days DATA GAPS IN POR 12/14/2005 - 06/18/2008 STAGE GAGE ELEVATION 1.50 feet Gage Height STAFF GAGES 0 ZERO GAGE HEIGHT ELEVATION 1,191.00 feet NAVD88 POINT OF ZERO FLOW (CONTROLLED) 0.00 feet Gage Height POINT OF ZERO FLOW (CONTROLLED BYPASS OUTLET) 6.0 feet Gage Height POINT OF ZERO FLOW (UNCONTROLLED) 9.0 feet Gage Height (currently blocked) SPILLWAY ELEVATION 21.0 feet Gage Height TOP OF DAM ELEVATION 27.0 feet Gage Height FCDMC Annual Surface Water Report, Water Year 2021 Page 932 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 933 WY2021 Events Date of Peak 07/16/2021 07/25/2021 Peak Gage Height (feet) 1.31 1.70 Peak Volume (ac-ft) 0.0 111.0 Hydrograph of peak 2021 impoundment event, 07/25/2021 FCDMC Annual Surface Water Report, Water Year 2021 Page 934 Percent Spillway Capacity 0.0 3.2 White Tanks FRS #3, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 0 MEAN 0 MAX 0 MIN 0 AC_FT 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 935 White Tanks FRS #3, volume data Volume, in acre-feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 7 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 111 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0 MAX 111 MIN 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 936 White Tanks FRS #3, stage data Depth, in feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 1.5 1.5 1.5 1.5 1.5 1.5 0.8 0.1 0.1 0.1 0.1 0.1 2 1.5 1.5 1.5 1.5 1.5 1.5 0.1 0.1 0.1 0.1 0.1 0.1 3 1.5 1.5 1.5 1.5 1.5 1.5 0.1 0.1 0.1 0.1 0.1 0.1 4 1.5 1.5 1.5 1.5 1.5 1.5 0.1 0.1 0.1 0.1 0.1 0.1 5 1.5 1.5 1.5 1.5 1.5 1.5 0.1 0.1 0.1 0.1 0.1 0.1 6 1.5 1.5 1.5 1.5 1.5 1.5 0.1 0.1 0.1 0.1 0.1 0.1 7 1.5 1.5 1.5 1.5 1.5 1.5 0.1 0.1 0.1 0.1 0.1 0.1 8 1.5 1.5 1.5 1.5 1.5 1.5 0.1 0.1 0.1 0.1 0.1 0.1 9 1.5 1.5 1.5 1.5 1.5 1.5 0.1 0.1 0.1 0.1 0.1 0.1 10 1.5 1.5 1.5 1.5 1.5 1.5 0.1 0.1 0.1 0.1 0.1 0.1 11 1.5 1.5 1.5 1.5 1.5 1.5 0.1 0.1 0.1 0.1 0.1 0.1 12 1.5 1.5 1.5 1.5 1.5 1.5 0.1 0.1 0.1 0.1 0.1 0.1 13 1.5 1.5 1.5 1.5 1.5 1.5 0.1 0.1 0.1 0.1 0.1 0.1 14 1.5 1.5 1.5 1.5 1.5 1.5 0.1 0.1 0.1 0.1 0.1 0.1 15 1.5 1.5 1.5 1.5 1.5 1.5 0.1 0.1 0.1 0.1 0.1 0.1 16 1.5 1.5 1.5 1.5 1.5 1.5 0.1 0.1 0.1 0.2 0.1 0.1 17 1.5 1.5 1.5 1.5 1.5 1.5 0.1 0.1 0.1 0.4 0.1 0.1 18 1.5 1.5 1.5 1.5 1.5 1.5 0.1 0.1 0.1 0.2 0.1 0.1 19 1.5 1.5 1.5 1.5 1.5 1.5 0.1 0.1 0.1 0.1 0.1 0.1 20 1.5 1.5 1.5 1.5 1.5 1.5 0.1 0.1 0.1 0.1 0.1 0.1 21 1.5 1.5 1.5 1.5 1.5 1.5 0.1 0.1 0.1 0.1 0.1 0.1 22 1.5 1.5 1.5 1.5 1.5 1.5 0.1 0.1 0.1 0.1 0.1 0.1 23 1.5 1.5 1.5 1.5 1.5 1.5 0.1 0.1 0.1 0.1 0.1 0.1 24 1.5 1.5 1.5 1.5 1.5 1.5 0.1 0.1 0.1 0.1 0.1 0.1 25 1.5 1.5 1.5 1.5 1.5 1.5 0.1 0.1 0.1 0.7 0.1 0.1 26 1.5 1.5 1.5 1.5 1.5 1.5 0.1 0.1 0.1 0.7 0.1 0.1 27 1.5 1.5 1.5 1.5 1.5 1.5 0.1 0.1 0.1 0.5 0.1 0.1 28 1.5 1.5 1.5 1.5 1.5 1.5 0.1 0.1 0.1 0.3 0.1 0.1 29 1.5 1.5 1.5 1.5 --1.5 0.1 0.1 0.1 0.2 0.1 0.1 30 1.5 1.5 1.5 1.5 --1.5 0.1 0.1 0.1 0.1 0.1 0.1 31 1.5 --1.5 1.5 --1.5 --0.1 --0.1 0.1 -------------------------------------------------------------------------------MEAN 1.5 1.5 1.5 1.5 1.5 1.5 0.2 0.1 0.1 0.2 0.1 0.1 MAX 1.5 1.5 1.5 1.5 1.5 1.5 1.5 0.1 0.1 1.7 0.1 0.1 MIN 1.5 1.5 1.5 1.5 1.5 1.5 0.1 0.1 0.1 0.1 0.1 0.1 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0.83 MAX 1.70 MIN 0.15 FCDMC Annual Surface Water Report, Water Year 2021 Page 937 White Tanks FRS #4, ID #87807 Site Data LOCATION Located south of I-10 and west of Jackrabbit Trail DRAINAGE AREA 18.6 mi2 STREAM TYPE Dam of natural drainage JURISDICTION Buckeye, Arizona WATERSHED White Tanks B SECTION/TOWNSHIP/RANGE S05 T1N R2W LATITUDE N 33° 27' 05.2" | +33.45145 LONGITUDE W 112° 29' 57.6" | -112.48268 STREAMGAGE INSTALLATION DATE 01/09/1986 - WY 1986 AVAILABLE PERIOD OF RECORD (POR) 10/01/1987 - Current LENGTH OF AVAILABLE POR DATA 34.00 Years | 12,419 Days DATA GAPS IN POR 06/01/2011 - 11/16/2011 STAFF GAGES 0 ZERO GAGE HEIGHT ELEVATION 1,030.00 feet NAVD88 POINT OF ZERO FLOW 0.00 feet Gage Height (gated outlet) SPILLWAY ELEVATION 1,053.00 feet NAVD88 TOP OF DAM ELEVATION 1,059.10 feet NAVD88 FCDMC Annual Surface Water Report, Water Year 2021 Page 938 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 939 WY2021 Events Date of Peak 07/25/2021 08/14/2021 09/02/2021 Peak Gage Height (feet) 4.20 2.63 0.66 Peak Volume (ac-ft) 29.0 11.8 0.1 Hydrograph of peak WY 2021 flow event, 07/25/2021 FCDMC Annual Surface Water Report, Water Year 2021 Page 940 Percent Spillway Capacity 2.0 0.9 0.1 White Tanks FRS #4, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 --16 --17 --18 --19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 0 MEAN 0 MAX 0 MIN 0 AC_FT 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 941 White Tanks FRS #4, volume data Volume, in acre-feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 10 15 --6 16 --4 17 --3 18 --2 19 1 20 21 22 23 24 25 15 26 22 27 14 28 8 29 --5 30 --2 31 --------1 -------------------------------------------------------------------------------MEAN 0 0 0 0 0 0 0 0 0 2 1 0 MAX 0 0 0 0 0 0 0 0 0 29 12 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 0 MAX 29 MIN 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 942 White Tanks FRS #4, stage data Depth, in feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 0.6 -0.1 2 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 0.3 0.5 3 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 0.2 0.3 4 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 0.0 0.1 5 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.2 0.1 6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.3 0.0 7 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.4 -0.0 8 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.4 -0.1 9 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.5 -0.2 10 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.2 11 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.2 12 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.3 13 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.3 14 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 2.4 -0.4 15 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 --1.9 -0.5 16 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 --1.5 -0.6 17 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 --1.4 -0.6 18 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 --1.2 -0.6 19 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.1 0.9 -0.6 20 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.2 0.7 -0.6 21 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.4 0.5 -0.6 22 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.5 0.3 -0.6 23 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 0.2 -0.6 24 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.5 0.1 -0.6 25 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 2.1 0.1 -0.6 26 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 3.6 0.0 -0.6 27 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 2.8 -0.0 -0.6 28 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 2.2 -0.1 -0.6 29 -0.6 -0.6 -0.6 -0.6 --- -0.6 -0.6 -0.6 -0.6 1.6 -0.1 -0.6 30 -0.6 -0.6 -0.6 -0.6 --- -0.6 -0.6 -0.6 -0.6 1.2 -0.2 -0.6 31 -0.6 --- -0.6 -0.6 --- -0.6 --- -0.6 --0.9 -0.2 -------------------------------------------------------------------------------MEAN -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 0.0 0.2 -0.3 MAX -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 4.2 2.6 0.7 MIN -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -0.6 -----------------------------------------------------------------------------WTR YR 2021 MEAN -0.45 MAX 4.20 MIN -0.60 FCDMC Annual Surface Water Report, Water Year 2021 Page 943 White Tank Outfall Channel, ID #87407 Site Data LOCATION At Jackrabbit Trail and Indian School Road DRAINAGE AREA 26.8 mi2 STREAM TYPE Engineered Channel JURISDICTION Buckeye, Arizona WATERSHED White Tanks B SECTION/TOWNSHIP/RANGE S20 T2N R2W LATITUDE N 33° 29' 38.0" | +33.49389 LONGITUDE W 112° 28' 45.4" | -112.47929 STREAMGAGE INSTALLATION DATE 12/07/2016 – WY2017 AVAIALBLE PERIOD OF RECORD 12/07/2016 - Current LENGTH OF AVAILABLE POR DATA 4.82 Years | 1,759 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 2.10 feet Gage Height STAFF GAGES 1 CREST STAGE GAGES 0 ZERO GAGE HEIGHT ELEVATION 1,151.71 feet NAVD88 POINT OF ZERO FLOW 1.70 feet Gage Height EXTREME FOR PERIOD OF RECORD 425 cfs | 2.06 feet | 07/23/2020 FCDMC Annual Surface Water Report, Water Year 2021 Page 944 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 945 WY2021 Events Date of Peak 07/25/2021 08/14/2021 Peak Gage Height (feet) 1.24 1.65 Peak Discharge (cfs) 67 102 Hydrograph of peak WY 2021 flow event, 08/14/2021 Flood Flow Frequency There is not enough data to compute a flood flow frequency for this gage station. FCDMC Annual Surface Water Report, Water Year 2021 Page 946 White Tank Outfall Channel, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 --6 7 8 9 10 11 12 13 14 36 15 16 --17 18 --19 20 21 --22 --23 24 --25 5 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 5 36 0 MEAN 0 0 0 0 0 0 0 0 0 0 1 0 MAX 0 0 0 0 0 0 0 0 0 67 102 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 11 71 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 41 MEAN 0 MAX 102 MIN 0 AC_FT 81 FCDMC Annual Surface Water Report, Water Year 2021 Page 947 Whitlow Ranch Dam, ID #63307 Site Data LOCATION East of Apache Junction near Queen Valley DRAINAGE AREA 143 mi2 STREAM TYPE Dam of natural drainage JURISDICTION Pinal County, Arizona WATERSHED Queen Creek SECTION/TOWNSHIP/RANGE S36 T1S R10E LATITUDE N 33° 17' 56.6" | +33.29906 LONGITUDE W 111° 16' 32.8" | -111.27579 STREAMGAGE INSTALLATION DATE 08/02/2000 - WY 2000 AVAILABLE PERIOD OF RECORD (POR) 08/02/2000 - Current LENGTH OF AVAILABLE POR DATA 21.16 Years | 7,730 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 11.70 feet Gage Height STAFF GAGES 25 ZERO GAGE HEIGHT ELEVATION 2,057.75 feet NAVD88 POINT OF ZERO FLOW 0.00 feet Gage Height SPILLWAY ELEVATION 110.4 feet Gage Height TOP OF DAM ELEVATION 143.0 feet Gage Height FCDMC Annual Surface Water Report, Water Year 2021 Page 948 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 949 WY2021 Events Date of Peak 07/10/2021 08/14/2021 08/15/2021 09/01/2021 09/02/2021 Peak Gage Height (feet) 12.31 17.39 31.26 12.43 14.00 Peak Volume (ac-ft) 19.0 126.0 1,139.0 20.0 29.0 Hydrograph of peak 2021 impoundment event, 08/15/2021 FCDMC Annual Surface Water Report, Water Year 2021 Page 950 Percent Spillway Capacity 0.0 1.3 5.6 0.0 0.3 Whitlow Ranch Dam, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 55 2 74 3 4 5 6 7 8 9 10 10 11 12 13 14 319 15 495 16 486 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 10 1300 130 MEAN 0 0 0 0 0 0 0 0 0 0 42 4 MAX 0 0 0 0 0 0 0 0 0 287 537 345 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 19 2579 257 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 1439 MEAN 4 MAX 537 MIN 0 AC_FT 2855 FCDMC Annual Surface Water Report, Water Year 2021 Page 951 Whitlow Ranch Dam, volume data Volume, in acre-feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 4 2 5 3 4 5 6 7 8 9 10 1 11 12 13 14 117 15 675 16 583 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------MEAN 0 0 0 0 0 0 0 0 0 0 44 0 MAX 0 0 0 0 0 0 0 0 0 19 1139 29 MIN 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 MEAN 4 MAX 1139 MIN 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 952 Whitlow Ranch Dam, stage data Depth, in feet, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.8 2 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.9 3 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 4 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 5 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 6 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 8 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 9 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 10 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 12 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 13 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 14 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 15.5 11.7 15 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 26.5 11.7 16 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 25.5 11.7 17 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 18 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 19 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 20 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 21 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 22 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 23 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 24 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 25 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 26 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 27 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 28 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 29 11.7 11.7 11.7 11.7 --- 11.7 11.7 11.7 11.7 11.7 11.7 11.7 30 11.7 11.7 11.7 11.7 --- 11.7 11.7 11.7 11.7 11.7 11.7 11.7 31 11.7 --- 11.7 11.7 --- 11.7 --- 11.7 --- 11.7 11.7 -------------------------------------------------------------------------------MEAN 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 12.7 11.7 MAX 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 12.3 31.3 14.0 MIN 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 -----------------------------------------------------------------------------WTR YR 2021 MEAN 11.79 MAX 31.26 MIN 11.70 FCDMC Annual Surface Water Report, Water Year 2021 Page 953 Winters Wash, ID #25507 Site Data LOCATION Located north of Camelback Road and west of 395th Avenue DRAINAGE AREA 27.8 mi2 STREAM TYPE Natural Stream JURISDICTION Maricopa County, Arizona WATERSHED Lower Centennial SECTION/TOWNSHIP/RANGE S18 T2N R6W LATITUDE N 33° 30' 31.5" | +33.50876 LONGITUDE W 112° 54' 44.0" | -112.91222 STREAMGAGE INSTALLATION DATE 07/11/2000 - WY 2000 AVAILABLE PERIOD OF RECORD (POR) 07/11/2000 - Current LENGTH OF AVAILABLE POR DATA 21.22 Years | 7,752 Days DATA GAPS IN POR None STAGE GAGE ELEVATION 0.51 feet Gage Height STAFF GAGES 0 CREST STAGE GAGES 1 ZERO GAGE HEIGHT ELEVATION 1,120.00 feet NAVD88 POINT OF ZERO FLOW 0.2 feet Gage Height EXTREME FOR PERIOD OF RECORD 510 cfs | 3.30 feet | 07/29/2003 FCDMC Annual Surface Water Report, Water Year 2021 Page 954 Watershed Map FCDMC Annual Surface Water Report, Water Year 2021 Page 955 WY2021 Events Date of Peak Peak Gage Height (feet) Peak Discharge (cfs) None Hydrograph of peak WY 2021 flow event, No runoff recorded during Water Year 2021. Flood Flow Frequency Flood Flow Frequency N=22, HEC-WRC computation (based on 22 years of data) 2-year 5-year 10-year 20-year 50-year 100-year 173 352 489 626 809 947 NOTE: These results are based on very limited data. FCDMC Annual Surface Water Report, Water Year 2021 Page 956 Winters Wash, runoff data Discharge, in cfs, Water Year October 2020 to September 2021 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 2021 TOTAL 0 MEAN 0 MAX 0 MIN 0 AC_FT 0 FCDMC Annual Surface Water Report, Water Year 2021 Page 957 End of Report FCDMC Annual Surface Water Report, Water Year 2021 Page 958