FCDMC ALERT SYSTEM ANNUAL SURFACE WATER REPORT WATER YEAR 1996 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, and La Paz Counties. The surface water data contained in this report was collected, compiled and edited by the Flood Warning and Data Collection Branch of the Engineering Division. Data includes 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. Also included starting in this year’s report are maximum discharges, pool levels, and storage volumes for flood events of interest at each site. Additionally, a few hydrographs from significant floods are also presented. Furthermore, flood flow frequency tables have been added at sites where information is available either from statistical analysis of gage records or from rainfall-runoff models. These estimates of flood flow frequency do not necessarily correspond to regulatory discharges for the channel reaches near the gage sites. Always refer to official regulatory documents for such discharge information. The information contained herein is as accurate and complete as possible within the limitations of real-time data collection technology currently available. Wherever possible, footnotes have been included to identify questionable data. Reliance upon the accuracy, reliability, and authority of this information is solely the responsibility of the user. Revisions to any of these data for any reason will be published in the following years’ reports immediately following the data for the current year for the site where the revisions have been made. Additional copies of this report may be purchased from: Flood Control District of Maricopa County 2801 W. Durango Street Phoenix, Arizona 85009 (602) 506-1501 or downloaded from the World Wide Web at http://www.maricopa.gov/flood/alert/alert.html. i TABLE OF CONTENTS Preface ............................................................................................................................. i Contents .......................................................................................................................... ii Introduction.................................................................................................................... iii Definition of Terms......................................................................................................... vi Surface Water Gage Location Map ................................................................................. ix List of Stations Sorted By Sensor ID# ............................................................................. x List of Stations Sorted Alphabetically ........................................................................... xiii Summary of Significant Streamflow Events ................................................................... xvi Surface Water Streamflow Data ................................................................................ Tab 1 Pool Levels at Storage Facilities ............................................................................... Tab 2 Storage Volumes at Storage Facilities ....................................................................... Tab 3 Comment/Errata Sheet ........................................................................................ Appendix ii INTRODUCTION The Flood Control District of Maricopa County in cooperation with local, state, and federal agencies collects a large amount of data pertaining to surface water runoff in and around Maricopa County. These data provide a valuable resource for information not otherwise furnished by the traditional sources of this type of material. To make these data readily available to interested parties outside the Flood Control District, the data are published annually in this report entitled "FCDMC ALERT System Annual Surface Water Report." This report includes records on discharge at uncontrolled stream gages and at flood control storage structures, on depths at flood control storage structures, and on contents at flood control storage structures. Specifically it contains: (1) Discharge records at 41 stream gages and 25 flood control storage structures; (2) Depths of stored water at 28 flood control storage structures; and (3) Contents at 27 flood control storage structures where stage-storage relationships are available. Records included are only a small fraction of those obtained for each site during this water year. A number of streamflow gages collected by the FCDMC ALERT System are run cooperatively with the United States Geological Survey (USGS). Although real-time data for these sites are collected at the FCDMC for the purposes of flood event monitoring, quality control for the data at these gages lies with the USGS. The official records for these sites are published in the USGS Surface Water Data Reports each water year. The cooperative gages collected jointly for Water Year 1996 were: USGS Gage Name FCDMC ID Vekol Wash near Stanfield, AZ Salt River at Priest Drive Salt R. Trib. in South Mtn. Park Cave Cr. below Cottonwood Cr. Agua Fria River at El Mirage Skunk Creek near Phoenix, AZ New River near Glendale, AZ Gila River @ Estrella Parkway Centennial Wash at SPRR Gila River near Sacaton, AZ Gila River near Maricopa, AZ 0778 Hassayampa River nr Morristown 6983 4523 None 4923 5503 5568 5508 6853 5103 0783 USGS ID 09488650 09512165 09512200 09512280 09513650 09513860 09513910 09514100 09517490 09478350 09479350 09516500 5223 In addition to the continous cooperative stations, the FCDMC also cooperates with the USGS in the collection of peak discharges at a number of crest stage gage sites. The data for these crest stage gage sites are also published by the USGS in their Surface Water Data Reports each water year. iii The cooperative crest stage gage sites for Water Year 1996 were: Gage Site Name USGS ID Tortilla Creek at Tortilla Flat Camp Creek near Sunflower Rock Creek near Sunflower Indian Bend Wash at Shea Blvd Agua Fria R. Trib. No. 2 Deadman Wash near New River Waterman Wash near Buckeye Hartman Wash near Wickenburg Ox Wash near Morristown Jackrabbit Wash near Tonapah Centennial Wash Trib. nr Wenden Tiger Wash near Aguila Rainbow Wash Trib. near Buckeye Bender Wash near Gila Bend Sauceda Wash near Gila Bend Military Wash near Sentinel Crater Range Wash near Ajo 09501300 09510170 09510180 09512090 09512700 09513820 09514200 09515800 09516600 09516800 09517200 09517280 09519600 09519750 09519760 09520100 09520230 This is the third 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. However, there are data resident in archives prior to water year 1994 that may have value to specific individuals. Data are available back to November 1987 for some streamflow sites. The data are collected as a depth of flow in feet (or stage). The discharge and/or contents is then obtained by applying the stage to a rating curve of stage versus discharge in cubic feet per second (cfs), or stage versus contents in acre-feet (ac-ft). The discharge rating curves have been developed at stream gages by using field surveyed cross sections in a HEC-2 or HECRAS step backwater computer model to obtain a range of stage versus discharge points to be plotted on a curve. These step backwater ratings are refined whenever possible using direct measurements made at or near the gage site. The discharge rating curves at flood control storage structures were developed by application of the Federal Highway Administration’s HY-8 computer model for culvert flow and U.S. Geological Survey methods for 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. The same is similarly true for storage facility contents. The minimum and maximum values are based on instantaneous readings and the volumes for discharge stations are based on accumulations of daily means. Those gages in iv section 2, Pool Levels at Storage Facilities, which show a continuous gage height during obvious periods of no storage, do so because the orifice to the pressure transducer is set at that gage height above or below 0.0' gage datum. All of the data in this report have been reviewed and edited in an attempt to provide the most accurate data possible. A blank or blanks within the data set is an indication that data was 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. Comments about this report or errors discovered may be forwarded to the Flood Warning and Data Collection Branch using the comment/errata sheet found at the back of this document. Alternately, comments or errors may be sent via Internet e-mail from the FCDMC ALERT System Home Page or directly to twl@poseidon.flood.maricopa.gov. An index of gage names, numbers, locations, and other descriptors is included following the Definition of Terms in this report. Additional or more detailed surface water data in hard copy or computer disk format is available for the gages listed in this report. Contact the Flood Control District, Engineering Division, Flood Warning and Data Collection Branch at (602) 506-1501. v DEFINITION OF TERMS Terms related to streamflow and other hydrologic data, as used in this report are defined below. Acre-foot (ac-ft) is 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. Contents is the volume of water in a reservoir or lake. Unless otherwise indicated, volume is computed on the basis of a level pool. Control designates a feature downstream from the gage that determines the stagedischarge relation at the gage. This feature may be a natural constriction of the channel, an artificial structure, or a uniform cross section over a long reach of the channel. Control structure as used in this report is a structure on a stream or canal that is used to regulate the flow or stage of the stream. Cubic foot per second (cfs) is the rate of discharge representing a volume of 1 cubic foot passing a given point during 1 second and is equivalent to approximately 7.48 gallons per second or 448.8 gallons per minute or 0.02832 cubic meters per second. Cubic foot per second-day is the volume of water represented by a flow of 1 cubic foot per second for 24 hours. It is equivalent to 86,400 cubic feet, approximately 1.9835 acrefeet, or about 646,000 gallons or 2,445 cubic meters. Daily mean discharge is the average discharge in cfs for a 24 hour period from midnight to midnight the following day. Discharge is the volume of water (or more broadly, total fluid plus suspended sediment), that passes a given point within a given period of time. Drainage area of a stream at a specified location is that 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. Drainage basin is a part of the surface of the Earth that is occupied by a drainage system, which consists of a surface stream or body of impounded surface water, together with all tributary surface streams and bodies of impounded surface water. Flood Elevation Frequency refers to the magnitude (in terms of depth or elevation) and probability of floods at a given flood control impoundment structure. The flood elevation frequency is usually given as a depth or elevatioin of impoundment associated with a given recurrence interval at a particular flood control impoundment structure. vi 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. Gage datum is 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 some given point such as a culvert invert elevation. Gage height is 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. Gaging station is a particular site on a stream, canal, lake, or reservoir where systematic observations of hydrologic data are obtained. Instantaneous discharge is the discharge at a particular instant of time. Maximum Level is the highest pool level recorded or observed at a particular gaging station at a flood control impoundment structure for a given event. Maximum Storage is the greatest volume of water stored behind or within a flood control impoundment structure for a given event. This occurs at the maximum pool level and is obtained from the stage-storage relation for that maximum level for a particular flood control impoundment structure. Mean discharge (MEAN) is the arithmetic mean of individual daily mean discharges during a specific period. National Geodetic Vertical Datum of 1929 (NGVD 1929) is 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. North American Vertical Datum of 1988 (NAVD 1988) is 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. vii Peak Discharge is the maximum instantaneous discharge for a given flood event. Period of Record 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 over the instrument. Recurrence interval is the reciprocal of the probability of a flood occurring in any given year. Thus, the flood having a 1% (1/100) 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) chance of occuring in any given year has a recurrence interval of 2 years and is referred to as the 2-year flood. Staff gage is a device located at the gaging station to provide a visual reference to the depth of water at a the gage in terms of gage height above the water level measuring instrument. Stage-discharge relation is the relation between gage height (stage) and the volume of water, per unit of time, flowing in a channel. Stage-storage relation is the relation between gage height (stage) and the volume of water stored behind or within a flood control impoundment structure. Streamflow 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. Water year 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 which includes 9 of the 12 months. Thus, the year ending September 30, 1996, is called the "1996 water year." viii ix Flood Control District of Maricopa County ALERT System Water Level Sensors WY 1996 ID # 778 783 788 793 798 4523 4563 4603 4613 4623 4638 4643 4648 4658 4683 4748 4753 4803 4808 4813 4823 4833 4903 4904 4918 4923 4938 5103 5113 5128 5153 5203 Gage Name Gila @ Maricopa Rd Gila R. @ Olberg Santa Cruz @ SR 84 Greene Wash @ SR 84 Santa Rosa @ SR 84 Salt R. @ Priest Dr. Spookhill FRS IBW @ McKellips Rd. IBW @ Indian Bend Rd. IBW @ Interceptor Tatum Wash @ 40th St. IBW @ Sweetwater East Fork CC #1 East Fork CC #4 East Fork CC #3 Old X-cut @ McDowell Old X-cut @ Thomas Dreamy Draw Dam ACDC @ 36th St. ACDC @ 14th St. ACDC @ 43rd Ave. Cave Creek @ Cactus Cave Buttes Outlet Cave Buttes Pool Cave Cr. nr Cave Cr. Cave Cr.@ Spur Cross Reata Pass Dam Centennial Railroad Saddleback FRS Harquahala FRS Narrows Dam Buckeye FRS #1 Sta. Type Rain/Stage Rain/Stage Rain/Stage Stage Rain/Stage Stage Rain/Stage Rain/Stage Rain/Stage Rain/Stage Rain/Stage Rain/Stage Rain/Stage Rain/Stage Rain/Stage Rain/Stage Stage Rain/Stage Rain/Stage Rain/Stage Rain/Stage Rain/Stage Rain/Stage Rain/Stage Stage Rain/Stage Rain/Stage Rain/Stage Rain/Stage Rain/Stage Rain/Stage Rain/Stage Watershed Gila /Queen Ck Gila /Queen Ck Pinal Pinal Pinal C.Creek / Salt C.Creek / Salt C.Creek / Salt C.Creek / Salt C.Creek / Salt C.Creek / Salt C.Creek / Salt C.Creek / Salt C.Creek / Salt C.Creek / Salt C.Creek / Salt C.Creek / Salt C.Creek / Salt C.Creek / Salt C.Creek / Salt C.Creek / Salt C.Creek / Salt C.Creek / Salt C.Creek / Salt C.Creek / Salt C.Creek / Salt C.Creek / Salt Centennial Centennial Centennial Centennial Hassayampa Repeater Signal Peak Signal Peak Signal Peak Signal Peak Signal Peak Direct Thompson Pk Thompson Pk Thompson Pk Thompson Pk Thompson Pk Thompson Pk Direct Direct Direct Direct Direct Direct Direct Direct White Tanks Direct Direct Direct Thompson Pk White Tanks Mt. Ord White Tanks White Tanks Burnt Mtn. Harquahala Mtn. White Tanks x Installed 4/9/95 4/12/95 3/16/94 3/23/94 3/16/94 12/7/93 3/13/84 5/21/85 9/28/83 4/21/94 6/3/94 12/27/90 3/2/94 1/18/94 9/13/94 7/27/94 7/26/94 1/24/84 2/24/94 2/9/94 11/14/90 6/27/91 1/25/84 1/25/84 5/27/94 6/16/93 2/25/93 2/9/90 12/16/88 3/1/94 9/1/94 7/26/83 T-R-S 3S-3E-13 4S-6E-12 7S-5E-21 7S-4E-21 7S-4E-20 1N-4E-17 2N-7E-31 1N-4E-11 2N-4E-11 2N-4E-12 3N-4E-30 3N-3E-13 4N-3E-23 4N-3E-25 4N-3E-34 1N-4E-06 2N-5W-30 3N-3E-34 2N-3E-13 2N-3E-4 3N-2E-22 3N-2E-13 4N-3E-15 4N-3E-15 5N-3E-12 6N-4E-04 5N-5E-33 1S-6W-28 2N-10W-34 2N-8W-05 4N-12W-04 1N-5W-3 Latitude 33 10 16 33 06 50 32 52 55 32 52 48 32 52 39 33 26 00 33 28 01 33 26 58 33 32 00 33 31 57 33 34 16 33 36 15 33 40 05 33 38 31 33 38 44 33 27 55 33 29 17 33 33 45 33 30 09 33 32 31 33 35 03 33 35 56 33 42 58 33 42 58 33 47 30 33 53 05 33 44 06 33 18 35 33 27 55 33 32 54 33 43 29 33 29 24 Sorted by ID# Longitude 112 00 21 111 41 15 111 49 45 111 56 03 111 56 51 111 57 43 111 40 48 111 54 58 111 54 53 111 53 55 111 59 44 112 00 18 112 01 15 112 01 01 112 02 24 111 58 49 111 54 52 112 01 54 112 00 00 112 02 35 112 09 16 112 07 01 112 02 43 112 02 43 112 00 36 111 57 17 111 50 36 112 52 56 113 04 21 113 05 52 113 30 45 112 44 02 Elev. 1120 1290 1311 1350 1305 1133 1595 1187 1071 1071 1300 1400 1515 1456 1456 1250 1200 1407 1260 1230 1225 1280 1649 1649 1800 2280 2600 850 1177 1420 1960 1097 Page #s 1:1 1:2 1:3 1:4 1:5 1:6 1:7,2:1,3:1 1:8 1:9 1:10 1:11-12 1:13 1:14,2:2,3:2 1:15,2:3,3:3 1:16,2:4,3:4 1:17 1:18-19 1:20-21,2:5-6,3:5-6 1:22 1:23 1:24 1:25 1:26 2:7,3:7 1:27 1:28 2:8 1:29 1:30,2:9,3:8 1:31,2:10,3:9 1:32 1:33,2:11,3:10 Flood Control District of Maricopa County ALERT System Water Level Sensors WY 1996 ID # 5208 5223 5228 5233 5248 5283 5308 5353 5403 5408 5413 5418 5438 5448 5503 5508 5523 5538 5539 5543 5568 5583 5598 5613 5614 6503 6563 6573 6583 6598 6608 6623 Gage Name Buckeye FRS #2 Hassy R. nr Morristown Hassy R. @ US 60 Sunset FRS Sunnycove FRS Hassy R. @ I-10 Hassy R. @ Box Canyon Hassy R. @ Wagoner Rd. Agua Fria @ Buckeye Colter @ El Mirage Dysart Drain @ LAFB White Tanks 3 McMicken Floodway McMicken Dam Agua Fria @ Grand Ave. New River @ Glendale ACDC @ 67th Ave. Adobe Dam Outlet Adobe Dam Pool Scatter Wash Skunk Creek @ I-17 Skunk Cr. nr New R. New River @ Bell Rd. New River Outlet New River Pool Guadalupe FRS South Mountain Fan EMF @ Broadway EMF @ Queen Creek Rd. EMF @ Arizona Ave. Freestone Park Basin Crossroads Park Basin Sta. Type Rain/Stage Stage Rain/Stage Rain/Stage Rain/Stage Rain/Stage Rain/Stage Rain/Stage Rain/Stage Rain/Stage Rain/Stage Rain/Stage Rain/Stage Rain/Stage Rain/Stage Rain/Stage Rain/Stage Rain/Stage Rain/Stage Stage Rain/Stage Stage Rain/Stage Rain/Stage Rain/Stage Rain/Stage Weather Rain/Stage Rain/Stage Rain/Stage Rain/Stage Weather Watershed Hassayampa Hassayampa Hassayampa Hassayampa Hassayampa Hassayampa Hassayampa Hassayampa Agua Fria Agua Fria Agua Fria Agua Fria Agua Fria Agua Fria Agua Fria Agua Fria Agua Fria Agua Fria Agua Fria Agua Fria Agua Fria Agua Fria Agua Fria Agua Fria Agua Fria Gila /Queen Ck Gila /Queen Ck Gila /Queen Ck Gila /Queen Ck Gila /Queen Ck Gila/Queen Ck Gila/Queen Ck Repeater White Tanks White Tanks White Tanks Yarnell Hill Yarnell Hill Yarnell Hill Towers Mtn. Towers Mtn. Direct White Tanks Direct Direct Direct Direct Direct White Tanks White Tanks Thompson Pk Thompson Pk Thompson Pk Direct White Tanks White Tanks Direct Direct Direct White Tanks Thompson Pk Thompson Pk Kings Ranch Thompson Pk Thompson Pk Installed 11/11/92 5/7/96 3/14/94 2/12/89 7/31/86 11/9/94 11/17/83 9/26/91 10/12/88 6/29/94 8/22/96 3/12/86 9/3/92 3/24/83 4/27/94 3/21/90 6/7/90 10/28/82 10/28/82 9/18/96 10/26/89 6/21/95 4/4/90 4/15/86 4/15/86 6/29/89 6/9/93 8/10/89 1/18/89 2/10/89 12/19/95 12/18/95 xi T-R-S 1N-3W-07 6N-4W-03 7N-5W-12 7N-5W-11 7N-5W-11 1N-5W-03 8N-4W-7 11N-3W-9 1N-1W-14 2N-1W-13 2N-1W-03 2N-2W-9 4N-1E-18 4N-2W-24 3N-1E-18 3N-1E-8 3N-1E-12 4N-2E-21 4N-2E-21 4N-2E-27 5N-2E-35 7N-3E-29 3N-1E-3 5N-1E-35 5N-1E-35 1S-4E-5 1S-2E-26 1N-6E-26 2S-6E-15 3S-5E-15 1S-6E-08 1S-6E-21 Latitude 33 26 26 33 53 06 33 58 22 33 57 50 33 57 25 33 27 33 33 58 11 34 18 38 33 26 05 33 30 38 33 32 38 33 32 01 33 41 04 33 40 38 33 36 25 33 32 14 33 37 26 33 40 37 33 40 37 33 40 20 33 43 47 33 55 36 33 38 18 33 44 09 33 44 09 33 22 16 33 18 57 33 24 21 33 15 50 33 10 53 33 21 29 33 19 40 Sorted by ID# Longitude 112 35 47 112 39 41 112 43 40 112 44 33 112 44 24 112 45 46 112 43 38 112 34 05 112 19 55 112 19 32 112 20 57 112 28 14 112 24 33 112 25 23 112 18 16 112 17 00 112 12 10 112 09 12 112 09 12 112 08 30 112 07 21 112 04 57 112 14 27 112 13 31 112 13 31 111 58 10 112 08 05 111 42 42 111 43 35 111 51 50 111 46 21 111 44 49 Elev. 1150 1830 2035 2100 2200 1035 2245 3785 940 1025 1090 1190 1337 1361 1125 1050 1220 1413 1413 1340 1475 1854 1200 1498 1498 1250 1420 1349 1317 1214 1450 1270 Page #s 1:34,2:12,3:11 1:35 1:36 1:37,2:13,3:12 1:38,2:14,3:13 1:39 1:40-43 1:44 1:45 1:46 1:47 1:48,2:15,3:14 1:49 1:50,2:16,3:15 1:51 1:52 1:53-56 1:57 2:17,3:16 1:58 1:59 1:60 1:61-62 1:63 2:18,3:17 1:64,2:19,3:18 1:65-66 1:67 1:68 1:69 2:20,3:19 2:21,3:20 Flood Control District of Maricopa County ALERT System Water Level Sensors WY 1996 ID # 6628 6673 6683 6688 6703 6713 6813 6823 6853 6893 6923 6983 7013 7043 7063 7083 7093 7113 7133 Gage Name Signal Butte FRS Apache Junction FRS Powerline FRS Vineyard FRS Rittenhouse FRS Queen Ck @ Rittenhouse Buckeye FRS #3 White Tanks 4 Gila @ Estrella Pkwy. Estrella Fan Sauceda Wash Vekol Wash Martinez Creek Sols Wash nr Matthie Hartman Wash Flying E Wash Casandro Wash Powder House Wash Casandro Dam Sta. Type Rain/Stage Rain/Stage Rain/Stage Rain/Stage Rain/Stage Rain/Stage Rain/Stage Rain/Stage Stage Weather Rain/Stage Rain/Stage Rain/Stage Rain/Stage Rain/Stage Rain/Stage Rain/Stage Rain/Stage Rain/Stage Watershed Gila /Queen Ck Gila /Queen Ck Gila /Queen Ck Gila /Queen Ck Gila /Queen Ck Gila /Queen Ck Wtrmn/Sauceda Wtrmn/Sauceda Wtrmn/Sauceda Wtrmn/Sauceda Wtrmn/Sauceda Wtrmn/Sauceda Hassayampa Hassayampa Hassayampa Hassayampa Hassayampa Hassayampa Hassayampa Repeater Kings Ranch Kings Ranch Kings Ranch Thompson Pk Thompson Pk Kings Ranch White Tanks White Tanks White Tanks Waterman White Tanks White Tanks Yarnell Hill Yarnell Hill Yarnell Hill Yarnell Hill Yarnell Hill Yarnell Hill Yarnell Hill Installed 11/10/87 12/16/81 12/3/92 11/2/83 9/27/88 9/14/93 11/23/92 1/9/86 12/2/92 4/30/93 2/28/90 3/7/90 11/23/94 8/4/95 7/6/94 7/12/94 7/12/94 5/18/95 8/15/96 xii T-R-S 1N-7E-12 1N-8E-8 1S 8E 09 1S-8E-9 2S-8E-2 2S-7E-25 1N-3W-10 1N-2W-5 1N-1W-31 2S-1W-12 6S-5W-04 7S-1E-3 8N-5W-17 8N-5W-32 7N-5W-12 7N-5W-09 7N-5W-10 7N-4W-06 7N-5W-11 Latitude 33 26 25 33 26 28 33 21 06 33 21 06 33 17 22 33 13 50 33 26 49 33 27 04 33 23 19 33 16 08 32 52 27 32 50 30 34 01 44 33 59 14 33 57 47 33 57 44 33 57 44 33 59 00 33 58 04 Sorted by ID# Longitude 111 35 25 111 33 07 111 32 34 111 32 34 111 30 26 111 35 41 112 33 20 112 29 40 112 23 33 112 19 15 112 44 57 112 14 58 112 47 30 112 47 36 112 49 40 112 46 49 112 45 53 112 42 45 112 44 49 Elev. 1650 1989 1580 1582 1580 1400 1200 1044 900 1425 726 1720 2300 2220 2488 2302 2240 2120 2163 Page #s 1:70,2:22,3:21 1:71,2:23,3:22 1:72,2:24,3:23 1:73,2:25,3:24 1:74,2:26,3:25 1:75 1:76,2:27,3:26 1:77,2:28,3:27 1:78 1:79 1:80 1:81 1:82 1:83 1:84-86 1:87-88 1:89 1:90 1:91,2:29,3:28 Flood Control District of Maricopa County ALERT System Water Level Sensors WY 1996 ID # 4813 4808 4823 5523 5538 5539 5403 5503 6673 5203 5208 6813 7133 7093 4903 4904 4918 4923 4833 5103 5408 6623 4803 5413 4648 4683 4658 6598 6573 6583 6893 7083 Gage Name ACDC @ 14th St. ACDC @ 36th St. ACDC @ 43rd Ave. ACDC @ 67th Ave. Adobe Dam Outlet Adobe Dam Pool Agua Fria @ Buckeye Agua Fria @ Grand Ave. Apache Junction FRS Buckeye FRS #1 Buckeye FRS #2 Buckeye FRS #3 Casandro Dam Casandro Wash Cave Buttes Outlet Cave Buttes Pool Cave Cr. nr Cave Cr. Cave Cr.@ Spur Cross Cave Creek @ Cactus Centennial Railroad Colter @ El Mirage Crossroads Park Basin Dreamy Draw Dam Dysart Drain @ LAFB East Fork CC #1 East Fork CC #3 East Fork CC #4 EMF @ Arizona Ave. EMF @ Broadway EMF @ Queen Creek Rd. Estrella Fan Flying E Wash Sta. Type Rain/Stage Rain/Stage Rain/Stage Rain/Stage Rain/Stage Rain/Stage Rain/Stage Rain/Stage Rain/Stage Rain/Stage Rain/Stage Rain/Stage Rain/Stage Rain/Stage Rain/Stage Rain/Stage Stage Rain/Stage Rain/Stage Rain/Stage Rain/Stage Weather Rain/Stage Rain/Stage Rain/Stage Rain/Stage Rain/Stage Rain/Stage Rain/Stage Rain/Stage Weather Rain/Stage Watershed C.Creek / Salt C.Creek / Salt C.Creek / Salt Agua Fria Agua Fria Agua Fria Agua Fria Agua Fria Gila /Queen Ck Hassayampa Hassayampa Wtrmn/Sauceda Hassayampa Hassayampa C.Creek / Salt C.Creek / Salt C.Creek / Salt C.Creek / Salt C.Creek / Salt Centennial Agua Fria Gila/Queen Ck C.Creek / Salt Agua Fria C.Creek / Salt C.Creek / Salt C.Creek / Salt Gila /Queen Ck Gila /Queen Ck Gila /Queen Ck Wtrmn/Sauceda Hassayampa Repeater Direct Direct White Tanks White Tanks Thompson Pk Thompson Pk Direct Direct Kings Ranch White Tanks White Tanks White Tanks Yarnell Hill Yarnell Hill Direct Direct Thompson Pk White Tanks Direct White Tanks White Tanks Thompson Pk Direct Direct Direct Direct Direct Kings Ranch Thompson Pk Thompson Pk Waterman Yarnell Hill Installed 2/9/94 2/24/94 11/14/90 6/7/90 10/28/82 10/28/82 10/12/88 4/27/94 12/16/81 7/26/83 11/11/92 11/23/92 8/15/96 7/12/94 1/25/84 1/25/84 5/27/94 6/16/93 6/27/91 2/9/90 6/29/94 12/18/95 1/24/84 8/22/96 3/2/94 9/13/94 1/18/94 2/10/89 8/10/89 1/18/89 4/30/93 7/12/94 xiii T-R-S 2N-3E-4 2N-3E-13 3N-2E-22 3N-1E-12 4N-2E-21 4N-2E-21 1N-1W-14 3N-1E-18 1N-8E-8 1N-5W-3 1N-3W-07 1N-3W-10 7N-5W-11 7N-5W-10 4N-3E-15 4N-3E-15 5N-3E-12 6N-4E-04 3N-2E-13 1S-6W-28 2N-1W-13 1S-6E-21 3N-3E-34 2N-1W-03 4N-3E-23 4N-3E-34 4N-3E-25 3S-5E-15 1N-6E-26 2S-6E-15 2S-1W-12 7N-5W-09 Latitude 33 32 31 33 30 09 33 35 03 33 37 26 33 40 37 33 40 37 33 26 05 33 36 25 33 26 28 33 29 24 33 26 26 33 26 49 33 58 04 33 57 44 33 42 58 33 42 58 33 47 30 33 53 05 33 35 56 33 18 35 33 30 38 33 19 40 33 33 45 33 32 38 33 40 05 33 38 44 33 38 31 33 10 53 33 24 21 33 15 50 33 16 08 33 57 44 Sorted by Name Longitude 112 02 35 112 00 00 112 09 16 112 12 10 112 09 12 112 09 12 112 19 55 112 18 16 111 33 07 112 44 02 112 35 47 112 33 20 112 44 49 112 45 53 112 02 43 112 02 43 112 00 36 111 57 17 112 07 01 112 52 56 112 19 32 111 44 49 112 01 54 112 20 57 112 01 15 112 02 24 112 01 01 111 51 50 111 42 42 111 43 35 112 19 15 112 46 49 Elev. 1230 1260 1225 1220 1413 1413 940 1125 1989 1097 1150 1200 2163 2240 1649 1649 1800 2280 1280 850 1025 1270 1407 1090 1515 1456 1456 1214 1349 1317 1425 2302 Page #s 1:23 1:22 1:24 1:53-56 1:57 2:17,3:16 1:45 1:51 1:71,2:23,3:22 1:33,2:11,3:10 1:34,2:12,3:11 1:76,2:27,3:26 1:91,2:29,3:28 1:89 1:26 2:7,3:7 1:27 1:28 1:25 1:29 1:46 2:21,3:20 1:20-21,2:5-6,3:5-6 1:47 1:14,2:2,3:2 1:16,2:4,3:4 1:15,2:3,3:3 1:69 1:67 1:68 1:79 1:86-88 Flood Control District of Maricopa County ALERT System Water Level Sensors WY 1996 ID # 6608 6853 778 783 793 6503 5128 7063 5308 5283 5228 5353 5223 4613 4623 4603 4643 7013 5448 5438 5153 5598 5508 5613 5614 4748 4753 7113 6683 6713 4938 6703 Gage Name Freestone Park Basin Gila @ Estrella Pkwy. Gila @ Maricopa Rd Gila R. @ Olberg Greene Wash @ SR 84 Guadalupe FRS Harquahala FRS Hartman Wash Hassy R. @ Box Canyon Hassy R. @ I-10 Hassy R. @ US 60 Hassy R. @ Wagoner Rd. Hassy R. nr Morristown IBW @ Indian Bend Rd. IBW @ Interceptor IBW @ McKellips Rd. IBW @ Sweetwater Martinez Creek McMicken Dam McMicken Floodway Narrows Dam New River @ Bell Rd. New River @ Glendale New River Outlet New River Pool Old X-cut @ McDowell Old X-cut @ Thomas Powder House Wash Powerline FRS Queen Ck @ Rittenhouse Reata Pass Dam Rittenhouse FRS Sta. Type Rain/Stage Stage Rain/Stage Rain/Stage Stage Rain/Stage Rain/Stage Rain/Stage Rain/Stage Rain/Stage Rain/Stage Rain/Stage Stage Rain/Stage Rain/Stage Rain/Stage Rain/Stage Rain/Stage Rain/Stage Rain/Stage Rain/Stage Rain/Stage Rain/Stage Rain/Stage Rain/Stage Rain/Stage Stage Rain/Stage Rain/Stage Rain/Stage Rain/Stage Rain/Stage Watershed Gila/Queen Ck Wtrmn/Sauceda Gila /Queen Ck Gila /Queen Ck Pinal Gila /Queen Ck Centennial Hassayampa Hassayampa Hassayampa Hassayampa Hassayampa Hassayampa C.Creek / Salt C.Creek / Salt C.Creek / Salt C.Creek / Salt Hassayampa Agua Fria Agua Fria Centennial Agua Fria Agua Fria Agua Fria Agua Fria C.Creek / Salt C.Creek / Salt Hassayampa Gila /Queen Ck Gila /Queen Ck C.Creek / Salt Gila /Queen Ck Repeater Thompson Pk White Tanks Signal Peak Signal Peak Signal Peak Direct Burnt Mtn. Yarnell Hill Towers Mtn. Yarnell Hill White Tanks Towers Mtn. White Tanks Thompson Pk Thompson Pk Thompson Pk Thompson Pk Yarnell Hill Direct Direct Harquahala Mtn. White Tanks White Tanks Direct Direct Direct Direct Yarnell Hill Kings Ranch Kings Ranch Mt. Ord Thompson Pk xiv Installed 12/19/95 12/2/92 4/9/95 4/12/95 3/23/94 6/29/89 3/1/94 7/6/94 11/17/83 11/9/94 3/14/94 9/26/91 5/7/96 9/28/83 4/21/94 5/21/85 12/27/90 11/23/94 3/24/83 9/3/92 9/1/94 4/4/90 3/21/90 4/15/86 4/15/86 7/27/94 7/26/94 5/18/95 12/3/92 9/14/93 2/25/93 9/27/88 T-R-S 1S-6E-08 1N-1W-31 3S-3E-13 4S-6E-12 7S-4E-21 1S-4E-5 2N-8W-05 7N-5W-12 8N-4W-7 1N-5W-03 7N-5W-12 11N-3W-9 6N-4W-03 2N-4E-11 2N-4E-12 1N-4E-11 3N-3E-13 8N-5W-17 4N-2W-24 4N-1E-18 4N-12W-04 3N-1E-3 3N-1E-8 5N-1E-35 5N-1E-35 1N-4E-06 2N-5W-30 7N-4W-06 1S 8E 09 2S-7E-25 5N-5E-33 2S-8E-2 Latitude 33 21 29 33 23 19 33 10 16 33 06 50 32 52 48 33 22 16 33 32 54 33 57 47 33 58 11 33 27 33 33 58 22 34 18 38 33 53 06 33 32 00 33 31 57 33 26 58 33 36 15 34 01 44 33 40 38 33 41 04 33 43 29 33 38 18 33 32 14 33 44 09 33 44 09 33 27 55 33 29 17 33 59 00 33 21 06 33 13 50 33 44 06 33 17 22 Sorted by Name Longitude 111 46 21 112 23 33 112 00 21 111 41 15 111 56 03 111 58 10 113 05 52 112 49 40 112 43 38 112 45 46 112 43 40 112 34 05 112 39 41 111 54 53 111 53 55 111 54 58 112 00 18 112 47 30 112 25 23 112 24 33 113 30 45 112 14 27 112 17 00 112 13 31 112 13 31 111 58 49 111 54 52 112 42 45 111 32 34 111 35 41 111 50 36 111 30 26 Elev. 1450 900 1120 1290 1350 1250 1420 2488 2245 1035 2035 3785 1830 1071 1071 1187 1400 2300 1361 1337 1960 1200 1050 1498 1498 1250 1200 2120 1580 1400 2600 1580 Page #s 2:20,3:19 1:78 1:1 1:2 1:4 1:64,2:19,3:18 1:31,2:10,3:9 1:84-85 1:40-43 1:39 1:36 1:44 1:35 1:9 1:10 1:8 1:13 1:82 1:50,2:16,3:15 1:49 1:32 1:61-62 1:52 1:63 2:18,3:17 1:17 1:18-19 1:90 1:72,2:24,3:23 1:75 2:8 1:74,2:26,3:25 Flood Control District of Maricopa County ALERT System Water Level Sensors WY 1996 ID # 5113 4523 788 798 6923 5543 6628 5583 5568 7043 6563 4563 5248 5233 4638 6983 6688 5418 6823 Gage Name Saddleback FRS Salt R. @ Priest Dr. Santa Cruz @ SR 84 Santa Rosa @ SR 84 Sauceda Wash Scatter Wash Signal Butte FRS Skunk Cr. nr New R. Skunk Creek @ I-17 Sols Wash nr Matthie South Mountain Fan Spookhill FRS Sunnycove FRS Sunset FRS Tatum Wash @ 40th St. Vekol Wash Vineyard FRS White Tanks 3 White Tanks 4 Sta. Type Rain/Stage Stage Rain/Stage Rain/Stage Rain/Stage Stage Rain/Stage Stage Rain/Stage Rain/Stage Weather Rain/Stage Rain/Stage Rain/Stage Rain/Stage Rain/Stage Rain/Stage Rain/Stage Rain/Stage Watershed Centennial C.Creek / Salt Pinal Pinal Wtrmn/Sauceda Agua Fria Gila /Queen Ck Agua Fria Agua Fria Hassayampa Gila /Queen Ck C.Creek / Salt Hassayampa Hassayampa C.Creek / Salt Wtrmn/Sauceda Gila /Queen Ck Agua Fria Wtrmn/Sauceda Repeater White Tanks Direct Signal Peak Signal Peak White Tanks Thompson Pk Kings Ranch White Tanks Direct Yarnell Hill White Tanks Thompson Pk Yarnell Hill Yarnell Hill Thompson Pk White Tanks Thompson Pk Direct White Tanks Installed 12/16/88 12/7/93 3/16/94 3/16/94 2/28/90 9/18/96 11/10/87 6/21/95 10/26/89 8/4/95 6/9/93 3/13/84 7/31/86 2/12/89 6/3/94 3/7/90 11/2/83 3/12/86 1/9/86 xv T-R-S 2N-10W-34 1N-4E-17 7S-5E-21 7S-4E-20 6S-5W-04 4N-2E-27 1N-7E-12 7N-3E-29 5N-2E-35 8N-5W-32 1S-2E-26 2N-7E-31 7N-5W-11 7N-5W-11 3N-4E-30 7S-1E-3 1S-8E-9 2N-2W-9 1N-2W-5 Latitude 33 27 55 33 26 00 32 52 55 32 52 39 32 52 27 33 40 20 33 26 25 33 55 36 33 43 47 33 59 14 33 18 57 33 28 01 33 57 25 33 57 50 33 34 16 32 50 30 33 21 06 33 32 01 33 27 04 Sorted by Name Longitude 113 04 21 111 57 43 111 49 45 111 56 51 112 44 57 112 08 30 111 35 25 112 04 57 112 07 21 112 47 36 112 08 05 111 40 48 112 44 24 112 44 33 111 59 44 112 14 58 111 32 34 112 28 14 112 29 40 Elev. 1177 1133 1311 1305 726 1340 1650 1854 1475 2220 1420 1595 2200 2100 1300 1720 1582 1190 1044 Page #s 1:30,2:9,3:8 1:6 1:3 1:5 1:80 1:58 1:70,2:22,3:21 1:60 1:59 1:83 1:65-66 1:7,2:1,3:1 1:38,2:14,3:13 1:37,2:13,3:12 1:11-12 1:81 1:73,2:25,3:24 1:48,2:15,3:14 1:77,2:28,3:27 SUMMARY OF SIGNIFICANT STREAMFLOW EVENTS Water Year 1996 was generally a rather dry year all around the State of Arizona including Maricopa County. However, a few storms were intense enough to generate runoff. The winter event of most significance occurred on November 1st. This storm produced the largest peak discharges and impoundments for the year at a number of sites including on the Arizona Canal Diversion Channel (ACDC), Cave Creek, and South Mountain Fan. The peak discharge on the ACDC at the 67th Avenue bridge of 1,692 cfs was the largest peak discharge recorded at this site since the installation of the gage in June of 1990. The summer monsoon also produced several storms of note which produced streamflow monitored by the Flood Control District’s ALERT System. The first occurred on July 15th when thunderstorms hit the central western part of Maricopa County. The result was small impoundments at the Buckeye #1 Flood Retarding Structure and the Saddleback Flood Retarding Structure. The second occurred on July 25th when an intense local thunderstorm produced a relatively large flash flood on the Hassayampa River. This flood was very short in duration rising from zero flow to over 7,500 cfs at Box Canyon in under one hour. On September 2 nd heavy rain hit the eastern part of the County. The East Maricopa Floodway experienced a flood of over 3,800 cfs in its upper reaches near Broadway Road. The runoff was great enough to flow all the way into the Gila River from north Mesa. This storm and runoff event primed the watersheds behind the Rittenhouse and Vineyard Flood Retarding Structures for another event on the 11 th of September when they were fill to about 5 percent of their capacities. The event of the 11 th also produced significant flooding in the Wickenburg area. All washes in and around Wickenburg experienced runoff while the newly dedicated Casandro Dam filled to over 10 percent of its storage capacity. These and other significant flows and/or impoundements for Water Year 1996 are summarized in the following table. Summary Page xvi FCDMC Annual Surface Water Report Water Year 1996 Maximum Flows and Impoundments for Water Year 1996 at Selected FCDMC Water Level Sensor Locations Location East Maricopa Floodway @ Broadway Road East Maricopa Floodway @ Queen Creek Rd. East Maricopa Floodway @ Arizona Avenue Vineyard FRS Rittenhouse FRS Signal Butte FRS South Mountain Fan Indian Bend Wash at Sweetwater Road Indian Bend Wash near Indian Bend Road Indian Bend Wash at McKellips Road Cave Creek near Cave Creek Cave Buttes Dam Cave Creek at Cactus Road East Fork Cave Creek Basin #4 ACDC @ 14th Street ACDC @ 43rd Ave ACDC @ 67th Ave Dysart Drain at Luke Air Force Base Hassayampa River at Wagoner Road Hassayampa River at Box Canyon Hassayampa River at US 60 Flying E Wash Casandro Wash Hartman Wash Casandro Dam Sols Wash near Matthie Sunset FRS Sunnycove FRS Buckeye FRS #1 Saddleback FRS Summary Page xvii Discharge (cfs) 3,840 1,610 630 60 105 350 130 670 380 330 180 470 45 50 1,030 1,690 195 140 7,550 4,920 300 35 45 15 120 100 90 Stage (feet) Contents (ac-ft) Date (%full) 3.4 9.7 4.9 195 150 11 6.2 4.5 0.8 12.8 289 0.6 2.7 3 4.1 5.8 15 10.5 7.2 7.1 1.5 2.5 11 4 45 102 12.8 1.9 0.6 1.5 9/2/96 9/2/96 9/2/96 9/14/96 9/11/96 8/28/96 11/1/95 2/1/96 & 7/25/96 9/2/96 9/2/96 9/7/96 11/2/95 11/1/95 2/1/96 7/25/96 11/1/95 11/1/95 9/2/96 9/5/96 7/25/96 7/25/96 9/11/96 9/10/96 9/11/96 9/11/96 7/28/96 9/11/96 9/11/96 7/15/96 7/15/96 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: USGS Gage: 778 Name: Gila @ Maricopa Rd Gila River near Maricopa, AZ, ID# 09479350 See USGS Water-Data Report AZ-96-1 for data for this site. Surface Water Streamflow Data Page 1 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: USGS Gage: 783 Name: Gila R. @ Olberg Gila River near Sacaton, AZ, ID# 09478350 See USGS Water-Data Report AZ-96-1 for data for this site. Surface Water Streamflow Data Page 2 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: 788 Name: Santa Cruz @ SR 84 Period of Record: 03/16/94 to current year Discharge, in cfs, Water Year October 1995 to September 1996 Peak flows of interest during Water Year 1996: Peak Discharge (cfs) Day Peak Discharge (cfs) Day July 15 76 Sept. 4 124 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP ------------------------------------------------------------------------------1 11 43 1 21 2 16 41 7 14 3 14 47 4 42 63 5 66 6 48 7 39 8 18 30 8 9 36 21 10 20 44 11 34 12 10 32 13 6 43 14 30 10 36 15 20 21 7 49 35 16 14 49 28 17 25 39 18 34 39 19 5 7 20 6 38 21 32 22 23 11 24 46 20 25 17 43 26 42 20 45 37 27 41 42 35 28 45 13 29 6 6 30 --31 ----24 ------------------------------------------------------------------------------------TOTAL 209 0 57 254 182 274 1 0 120 308 32 348 MEAN 7 0 2 8 6 9 0 0 4 10 1 12 MAX 48 0 43 46 49 48 0 0 47 76 43 124 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 414 0 114 505 362 543 1 0 238 612 63 691 ------------------------------------------------------------------------------WTR YR 1996 TOTAL 1786 MEAN 5 MAX 124 MIN 0 AC_FT 3542 Note: Most flows due to irrigation return water. Surface Water Streamflow Data Page 3 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: 793 Name: Greene Wash @ SR 84 Period of Record: 03/23/94 to current year Discharge, in cfs, Water Year October 1995 to September 1996 No flow above gage during Water Year 1996. Minimum flow recorded by gage is about 40 cfs at 1.2 ft gage height. OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------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 1996 TOTAL 0 MEAN 0 MAX 0 MIN 0 AC_FT 0 Surface Water Streamflow Data Page 4 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: 798 Name: Santa Rosa @ SR 84 Period of Record: 03/16/94 to current year Discharge, in cfs, Water Year October 1995 to September 1996 No flow above gage during Water Year 1996. Minimum flow recorded by gage is about 325 cfs at 2.3 ft gage height. OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------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 1996 TOTAL 0 MEAN 0 MAX 0 MIN 0 AC_FT 0 Surface Water Streamflow Data Page 5 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: USGS Gage: 4523 Name: Salt R. @ Priest Dr. Salt River at Priest Drive, ID# 09512165 See USGS Water-Data Report AZ-96-1 for data for this site. Flood Flow Frequency Magnitude and Probability of Instantaneous Peak Flow Discharge, in cfs, for Indicated Recurrence Interval 5-year 10-year 20-year 50-year 100-year 20,500 55,000 90,000 140,000 169,000 Surface Water Streamflow Data Page 6 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: 4563 Name: Spookhill FRS Period of Record: Nov. 1987 to current year Discharge, in cfs, Water Year October 1995 to September 1996 Peak outflows of interest during Water Year 1996 assuming gate fully open: Peak Discharge (cfs) Day Peak Discharge (cfs) Day Nov. 1 July 14 13 13 Feb. 2 Sept. 2 15 45 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP ------------------------------------------------------------------------------1 2 2 13 4 39 3 2 41 4 39 5 38 6 36 7 34 8 33 9 31 10 30 11 30 12 30 13 29 14 2 29 15 5 28 16 26 17 26 18 25 19 23 20 24 21 23 22 22 23 18 24 14 25 5 26 7 5 27 28 5 29 30 --31 ----------------------------------------------------------------------------------------TOTAL 0 17 0 0 11 0 0 0 0 12 5 672 MEAN 0 1 0 0 0 0 0 0 0 0 0 22 MAX 0 13 0 0 15 0 0 0 0 13 9 45 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 33 0 0 22 0 0 0 0 23 9 1333 ------------------------------------------------------------------------------WTR YR 1996 TOTAL 716 MEAN 2 MAX 45 MIN 0 AC_FT 1421 Note: This structure has a manual gated outlet. Discharges are based on the assumption that the gate is fully open. This was not the case for many of these impoundments, especially during Sept. 1996. Therefore, mean daily flows and acre-footage are overreported. See also Pool Level and Storage Volume Data. Surface Water Streamflow Data Page 7 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: 4603 Name: IBW @ McKellips Rd. Period of Record: Nov. 1987 to current year Discharge, in cfs, Water Year October 1995 to September 1996 Peak flows of interest during Water Year 1996: Peak Discharge (cfs) Day Peak Discharge (cfs) Day Nov. 1 Mar. 14 Aug. 18 Sept. 4 150 94 278 288 Nov. 29 July 26 Sept. 2 Sept. 11 76 173 380 241 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP ------------------------------------------------------------------------------1 8 10 6 2 5 50 162 3 1 3 132 4 152 5 17 6 13 2 7 3 1 8 2 9 9 10 11 23 12 13 1 2 14 20 15 12 16 17 18 9 19 65 20 21 22 23 24 25 (1) 7 26 19 27 38 28 42 29 65 30 56 --31 ----------------------------------------------------------------------------------------TOTAL 14 284 6 0 0 32 0 0 0 35 74 492 MEAN 0 9 0 0 0 1 0 0 0 1 2 16 MAX 13 150 22 0 0 94 0 0 0 173 278 380 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 29 563 13 0 0 64 0 0 0 70 147 977 ------------------------------------------------------------------------------WTR YR 1996 TOTAL 939 MEAN 3 MAX 380 MIN 0 AC_FT 1862 (1) Gage down due to plugged bubbler line from 11/25-27/1995. Consequently, some low flow data was missed. See also the USGS Water-Data Report for Indian Bend Wash @ Curry Road, USGS gage ID# 09512162, located approximately 1/2 mile downstream. Flood Flow Frequency Magnitude and Probability of Instantaneous Peak Flow Discharge, in cfs, for Indicated Recurrence Interval 10-year 50-year 100-year 4,000 14,000 20,000 Surface Water Streamflow Data Page 8 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: 4613 Name: IBW @ Indian Bend Period of Record: USGS -- 1961-1984; FCDMC -- Nov. 1987 to current water year Discharge, in cfs, Water Year October 1995 to September 1996 Peak flows of interest during Water Year 1996: Peak Discharge (cfs) Day Peak Discharge (cfs) Day Nov. 2 July 26 541 148 Feb. 2 Sept. 2 285 666 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP ------------------------------------------------------------------------------1 9 2 122 64 151 3 13 4 5 6 7 8 9 7 10 18 11 20 12 13 13 20 14 16 15 18 16 18 17 18 18 18 19 20 20 18 21 18 22 21 23 10 24 25 26 7 32 27 28 29 30 --31 ----------------------------------------------------------------------------------------TOTAL 0 122 0 0 79 0 0 0 0 32 0 418 MEAN 0 4 0 0 3 0 0 0 0 1 0 14 MAX 0 541 0 0 285 0 0 0 0 148 0 666 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 242 0 0 157 0 0 0 0 63 0 829 ------------------------------------------------------------------------------WTR YR 1996 TOTAL 651 MEAN 2 MAX 666 MIN 0 AC_FT 1291 Flood Flow Frequency Magnitude and Probability of Instantaneous Peak Flow Discharge, in cfs, for Indicated Recurrence Interval 10-year 50-year 100-year 3,500 12,000 17,000 Surface Water Streamflow Data Page 9 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: 4623 Name: IBW Interceptor Period of Record: 04/21/94 to current year Discharge, in cfs, Water Year October 1995 to September 1996 No flow during Water Year 1996. OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------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 1996 TOTAL 0 MEAN 0 MAX 0 MIN 0 AC_FT 0 Surface Water Streamflow Data Page 10 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: 4638 Name: Tatum Wash @ 40th Period of Record: 06/03/94 to current year Discharge, in cfs, Water Year October 1995 to September 1996 Day July 26* No flow during Water Year 1996 except for the following day: Discharge 13** OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 4 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 13 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 1996 TOTAL 4 MEAN 0 MAX 13 MIN 0 AC_FT 7 * ** Date of event interpreted from precipitation record at site. Gage down due to instrument failure. Maximum taken from high water marks on staff gage. Surface Water Streamflow Data Page 11 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: 4638 Name: Tatum Wash @ 40th Period of Record: 06/03/94 to current year Discharge, in cfs, Water Year October 1994 to September 1995 -- REVISED Day Sept. 28 No flow during Water Year 1995 except on following day: Peak Discharge (cfs) 17 OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------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 17 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 1995 TOTAL 0 MEAN 0 MAX 17 MIN 0 AC_FT 0 Revisions due to reevaluation of instrument base value. Instrument diaphragm found to be 0.1 ft higher than previously believed. Surface Water Streamflow Data Page 12 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: 4643 Name: IBW @ Sweetwater Period of Record: 12/27/90 to current year Discharge, in cfs, Water Year October 1995 to September 1996 Day Nov. 1 Feb. 26 July 25 Sept. 2 Peak flows of interest during Water Year 1996: Peak Discharge (cfs) Day Peak Discharge (cfs) 3 1 130 85 Feb. 1 July 15 Aug. 18 Sept. 11 130 1 2 55 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 6 2 8 3 4 5 6 7 8 9 10 11 2 12 13 14 15 16 17 18 19 1 20 21 22 23 24 25 10 26 3 27 28 29 30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 6 0 0 0 0 13 1 11 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 3 0 0 130 0 0 0 0 130 2 85 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 1 0 0 11 0 0 0 0 26 1 22 -----------------------------------------------------------------------------WTR YR 1996 TOTAL 31 MEAN 0 MAX 130 MIN 0 AC_FT 61 Surface Water Streamflow Data Page 13 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: 4648 Name: E.Fork CC #1 Period of Record: 03/02/94 to current year Discharge, in cfs, Water Year October 1995 to September 1996 Day Feb. 1 July 25 No outflows during Water Year 1996 except on following days: Peak Discharge (cfs) Day Peak Discharge (cfs) 10 5 July 14 Sept. 13 2 OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------TOTAL 0 0 0 0 1 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 10 0 0 0 0 13 0 2 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 2 0 0 0 0 1 0 0 -----------------------------------------------------------------------------WTR YR 1996 TOTAL 2 MEAN 0 MAX 13 MIN 0 AC_FT 3 See also Pool Level and Storage Volume Data. Surface Water Streamflow Data Page 14 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: 4658 Name: E.Fork CC #4 Period of Record: 01/18/94 to current year Discharge, in cfs, Water Year October 1995 to September 1996 Day Nov. 1 Feb. 25 July 14 Aug. 14 Sept. 25 Peak outflows greater than 10 cfs during Water Year 1996: Peak Discharge (cfs) Day Peak Discharge (cfs) 16 20 28 11 25 Feb. July July Aug. 1 9 25 29 45 21 24 12 OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------TOTAL 0 6 0 0 57 11 0 0 0 15 5 10 MEAN 0 0 0 0 2 0 0 0 0 0 0 0 MAX 0 16 0 10 45 7 0 0 0 28 12 26 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 11 0 0 113 21 0 0 0 31 10 20 -----------------------------------------------------------------------------WTR YR 1996 TOTAL 104 MEAN 0 MAX 45 MIN 0 AC_FT 206 See also Pool Level and Storage Volume Data. Surface Water Streamflow Data Page 15 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: 4683 Name: E.Fork CC #3 Period of Record: 07/27/94 to current year Discharge, in cfs, Water Year October 1995 to September 1996 No flow during Water Year 1996.* OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------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 1996 TOTAL 0 MEAN 0 MAX 0 MIN 0 AC_FT 0 * Flows up to about the 2-year are passed beneath the detention basin via storm drains. See also Pool Level and Storage Volume Data. Surface Water Streamflow Data Page 16 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: 4748 Name: Old Xcut @ McDowell Period of Record: 07/27/94 to current year Discharge, in cfs, Water Year October 1995 to September 1996 Day Nov. 1 Feb. 1 July 7 July 20 July 25 Sept. 4 Peak flows of interest during Water Year 1996: Peak Discharge (cfs) Day Peak Discharge (cfs) 70 24 103 349* 86 24 Nov. 6 Feb. 25 July 14 July 23 Aug. 18 Sept. 6 25 38 49 103 52 58 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 8 2 2 3 3 4 1 5 2 6 9 4 7 21 2 8 9 10 11 12 13 14 12 15 16 19 17 18 4 19 2 20 44 21 64 22 82 23 35 24 25 1 13 26 4 2 27 28 29 30 --31 ---------------------------------------------------------------------------------------TOTAL 0 22 0 0 8 0 0 0 0 273 5 26 MEAN 0 1 0 0 0 0 0 0 0 9 0 1 MAX 0 70 0 0 38 0 0 0 0 349* 52 75 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 44 0 0 15 0 0 0 0 542 11 51 -----------------------------------------------------------------------------WTR YR 1996 TOTAL 334 MEAN 1 MAX 349* MIN 0 AC_FT 663 * Maximum flow was released by Salt River Project from the Arizona Canal upstream. Surface Water Streamflow Data Page 17 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: 4753 Name: Old Xcut @ Thomas Period of Record: 07/26/94 to current year Discharge, in cfs, Water Year October 1995 to September 1996 Peak discharges of interest greater than 50 cfs during Water Year 1996: Peak Discharge (cfs) Day Peak Discharge (cfs) Day Nov. 1 July 7 July 22 Aug. 18 Sept. 6 57 161 134 68 53 Jan. 15 July 20 July 25 Sept. 4 54 435* 68 67 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 6 2 2 2 22 4 3 9 1 4 5 5 5 2 6 4 7 42 2 8 2 9 2 10 2 11 2 12 2 13 2 14 3 2 15 13 1 16 1 17 2 18 11 5 2 19 22 6 2 20 22 73 2 21 22 104 2 22 22 110 2 23 22 57 2 24 22 3 25 22 6 2 26 21 3 2 27 14 2 28 2 29 2 2 30 --2 2 31 --------2 -------------------------------------------------------------------------------TOTAL 5 37 200 13 2 0 0 0 0 398 16 65 MEAN 0 1 6 0 0 0 0 0 0 13 1 2 MAX 37 57 26 54 28 0 0 0 0 435* 68 67 MIN 0 0 0 0 0 0 0 0 0 0 0 1 AC_FT 11 74 396 25 3 0 0 0 0 788 33 128 -----------------------------------------------------------------------------WTR YR 1996 TOTAL 735 MEAN 2 MAX 435* MIN 0 AC_FT 1458 Note: * Instrument lowered 1.26 ft on 8/29/96 into nearly constant low flow. Maximum flow was released by Salt River Project from the Arizona Canal upstream. Surface Water Streamflow Data Page 18 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: 4753 Name: Old Xcut @ Thomas Period of Record: 07/26/94 to current year Discharge, in cfs, Water Year October 1994 to September 1995 -- REVISED Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 21 36 0 2 21 34 11 3 22 37 19 4 8 43 19 5 12 49 19 6 37 56 20 7 3 15 37 50 20 8 38 49 21 9 56 49 6 21 10 49 15 21 11 35 21 12 10 38 21 13 56 22 14 55 21 3 15 49 22 16 11 50 22 17 19 64 22 18 19 77 22 19 19 63 21 2 20 19 64 20 5 21 19 78 21 22 19 66 20 23 19 46 20 24 71 21 25 4 74 20 26 70 20 27 66 20 28 42 20 15 29 --20 30 1 --19 31 ---------------------------------------------------------------------------------------TOTAL 0 1 223 25 1293 418 6 585 0 0 11 16 MEAN 0 0 7 1 46 13 0 19 0 0 0 1 MAX 0 20 44 49 78 56 40 23 0 0 59 76 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 1 442 50 2565 829 13 1161 0 0 21 31 -----------------------------------------------------------------------------WTR YR 1995 TOTAL 2577 MEAN 7 MAX 78 MIN 0 AC_FT 5112 Revisions to Water Year 1995 data due to errors discovered in rating for the temporary construction dam after event of 9/28/95. Important because this had been reported as the maximum flow event for WY 95. With revision this peak was approximately the same as events in Feb. of 1995. Surface Water Streamflow Data Page 19 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: 4803 Name: Dreamy Draw Dam Period of Record: Nov. 1987 to current year Discharge, in cfs, Water Year October 1995 to September 1996 Day Nov. 1 Feb. 1 Peak outflows occurred on following days during Water Year 1996: Peak Discharge (cfs) Day Peak Discharge (cfs) 9 49 Nov. 7 July 16 7 17 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 1 2 2 2 7 1 -----------------------------------------------------------------------------TOTAL 0 2 0 0 2 0 0 0 0 0 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 9 0 0 49 0 0 0 0 17 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 4 0 0 4 0 0 0 0 1 0 0 -----------------------------------------------------------------------------WTR YR 1996 TOTAL 5 MEAN 0 MAX 49 MIN 0 AC_FT 9 See also Pool Level and Storage Volume Data. Surface Water Streamflow Data Page 20 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: 4803 Name: Dreamy Draw Dam Period of Record: Nov. 1987 to current year Discharge, in cfs, Water Year October 1994 to September 1995 -- REVISED Day Jan. 5 Aug. 20 Peak outflows occurred on following days during Water Year 1995: Peak Discharge (cfs) Day Peak Discharge (cfs) 4 27 Aug. 19 Sept. 27 80 127 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------19 2 20 2 27 2 28 6 -----------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 4 9 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 4 0 0 0 0 0 0 80 127 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 9 17 -----------------------------------------------------------------------------WTR YR 1995 TOTAL 13 MEAN 0 MAX 127 MIN 0 AC_FT 26 Data revised to reflect change in instrument datum on 4/19/95. Rating curve shifted -1.28 feet to correct data from 4/19/95 to 9/30/95. See also Pool Level and Storage Volume Data. Surface Water Streamflow Data Page 21 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: 4808 Name: ACDC @ 36 St Period of Record: 02/24/94 to current year Discharge, in cfs, Water Year October 1995 to September 1996 Day Nov. 1 Feb. 1 Mar. 14 July 16 Sept. 2 Peak flows of interest during Water Year 1996: Peak Discharge (cfs) Day Peak Discharge (cfs) 9 2 2 2 3 Nov. Feb. July July 6 25 7 25 2 3 1 6 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 1 2 2 1 3 4 5 6 1 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 1 26 1 1 27 28 30 --31 ---------------------------------------------------------------------------------------TOTAL 0 4 0 0 1 0 0 0 0 3 0 1 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 9 0 0 3 2 0 0 0 6 0 3 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 7 0 0 2 1 0 0 0 5 0 1 -----------------------------------------------------------------------------WTR YR 1996 TOTAL 9 MEAN 0 MAX 9 MIN 0 AC_FT 17 Surface Water Streamflow Data Page 22 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: 4813 Name: ACDC @ 14 St Period of Record: 02/09/94 to current year Discharge, in cfs, Water Year October 1995 to September 1996 Peak flows of interest during Water Year 1996: Peak Discharge (cfs) Day Peak Discharge (cfs) Day Oct. Feb. July July Aug. 8 1 7 10 29 26 31 24 45 10 Nov. 1 Apr. 13 July 9 July 25 Sept. 2 27 19* 29 50 13 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 7 4 4 2 4 3 1 3 4 5 6 7 4 8 8 9 7 10 8 11 12 13 4 14 15 16 17 18 19 20 21 22 23 24 25 4 26 7 27 28 29 1 30 --4 31 ---------------------------------------------------------------------------------------TOTAL 19 7 0 0 4 0 4 0 0 29 5 1 MEAN 1 0 0 0 0 0 0 0 0 1 0 0 MAX 26 27 0 0 31 0 19 0 0 50 10 13 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 37 14 0 0 8 0 7 0 0 58 9 2 -----------------------------------------------------------------------------WTR YR 1996 TOTAL 68 MEAN 0 MAX 50 MIN 0 AC_FT 135 Note: * Flows on Oct. 1 and 2 on recession limb of flow from 9/28/95. Dry weather flow. Surface Water Streamflow Data Page 23 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: 4823 Name: ACDC @ 43 Av Period of Record: 12/17/91 to current year Discharge, in cfs, Water Year October 1995 to September 1996 Peak flows of interest during Water Year 1996: Peak Discharge (cfs) Day Peak Discharge (cfs) Day Nov. 1 July 14 Aug. 14 Sept. 6 1,028 464 464 218 Feb. 1 July 25 Aug. 29 Sept. 11 561 752 218 612 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 118 74 2 52 29 6 13 11 158 14 15 22 85 25 26 53 6 24 29 10 30 --1 -----------------------------------------------------------------------------TOTAL 0 169 0 0 103 0 0 0 0 167 35 171 MEAN 0 6 0 0 4 0 0 0 0 5 1 6 MAX 0 1028 0 0 561 0 0 0 0 752 464 612 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 336 0 0 205 0 0 0 0 331 70 339 -----------------------------------------------------------------------------WTR YR 1996 TOTAL 645 MEAN 2 MAX 1028 MIN 0 AC_FT 1280 Flood of Nov. 1, 1995 at ACDC @ 43rd Ave Discharge (cfs) 1200 1000 800 600 400 200 0 11/1/95 12:00 11/1/95 18:00 11/2/95 0:00 11/2/95 6:00 Date Time Surface Water Streamflow Data Page 24 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: 4833 Name: Cave Creek @ Cactus Period of Record: 06/21/91 to current year Discharge, in cfs, Water Year October 1995 to September 1996 Peak flows of interest during Water Year 1996: Peak Discharge (cfs) Day Peak Discharge (cfs) Day Nov. 1 Feb. 1 Mar. 14 July 26 Aug. 30 Sept. 7 Sept. 13 473 172 7 82 33 84 119 Nov. 6 Feb. 26 July 16 Aug. 15 Sept. 2 Sept. 11 17 49 238 161 83 184 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 69* 35 42 2 6* 231 72 45 3 195 7 40 4 73 7 5 17 1 6 11 1 7 5 43 8 1 30 9 7 10 23 11 109 12 65 13 101 14 2 4 14 87 15 1 185 127 46 16 180 24 26 17 132 14 18 61 7 19 30 20 11 21 1 22 23 24 25 1 26 30 67 27 4 35 28 16 29 7 30 --3 18 31 --------1 -------------------------------------------------------------------------------TOTAL 75 567 0 0 155 3 0 0 0 733 184 653 MEAN 2 19 0 0 5 0 0 0 0 24 6 22 MAX 134 473 0 0 172 7 0 0 0 238 161 184 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 149 1125 0 0 307 6 0 0 0 1454 364 1295 -----------------------------------------------------------------------------WTR YR 1996 TOTAL 2370 MEAN 6 MAX 473 MIN 0 AC_FT 4701 Note: Receeding limbs of hydrographs greatly affected by clogging of the outlet orifice. Therefore, low flows for falling hydrographs may be unrealistically high. See downstream stations 4823 and 5523 for a better representation of the falling limbs. * Flows on Oct. 1 and 2 from recession limb of event of 9/28/95. Surface Water Streamflow Data Page 25 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: 4903 Name: Cave Buttes Outlet Period of Record: Nov. 1987 to current year Discharge, in cfs, Water Year October 1995 to September 1996 Day Nov. 2 July 15 Sept. 7 Peak flows of interest during Water Year 1996: Peak Discharge (cfs) Day Peak Discharge (cfs) 171 163 140 Aug. 15 Sept. 2 Sept. 11 197 132 47 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 17 2 162 45 3 18 4 5 6 1 7 46 8 9 10 11 17 12 13 13 28 14 6 21 15 99 93 16 19 17 6 18 19 20 21 22 23 24 25 26 27 28 29 30 --31 ---------------------------------------------------------------------------------------TOTAL 0 197 0 0 0 0 0 0 0 131 114 150 MEAN 0 7 0 0 0 0 0 0 0 4 4 5 MAX 0 171 0 0 0 0 0 0 0 163 197 140 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 391 0 0 0 0 0 0 0 260 226 298 -----------------------------------------------------------------------------WTR YR 1996 TOTAL 592 MEAN 2 MAX 197 MIN 0 AC_FT 1175 See also Pool Level and Storage Volume Data. Surface Water Streamflow Data Page 26 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: Period of Record: 4918 Name: Cave Cr nr Cave Cr USGS ID# 09512300 -- 05/17/58 to 09/30/67; 1968-1994 (annual peaks only) FCDMC -- 05/27/94 to current year Discharge, in cfs, Water Year October 1995 to September 1996 Peak flows of interest during Water Year 1996: Peak Discharge (cfs) Day Peak Discharge (cfs) Day Nov. 1 Aug. 14 254 291 Sept. 2 Sept. 7 147 332 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 11 2 29 6 7 15 49 14 25 15 16 -----------------------------------------------------------------------------TOTAL 0 11 0 0 0 0 0 0 0 0 40 93 MEAN 0 0 0 0 0 0 0 0 0 0 1 3 MAX 0 254 0 0 0 0 0 0 0 0 291 332 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 21 0 0 0 0 0 0 0 0 80 185 -----------------------------------------------------------------------------WTR YR 1996 TOTAL 144 MEAN 0 MAX 332 MIN 0 AC_FT 286 2-year 1,510 Flood Flow Frequency Magnitude and Probability of Instantaneous Peak Flow Discharge, in cfs, for Indicated Recurrence Interval 5-year 10-year 20-year 50-year 4,690 8,020 12,200 18,900 Surface Water Streamflow Data Page 27 100-year 24,900 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: USGS Gage: 4923 Name: Cave Cr.@ SpurCross Cave Creek below Cottonwood Creek, ID# 09512280 See USGS Water-Data Report AZ-96-1 for data for this site. 2-year 1,000 Flood Flow Frequency Magnitude and Probability of Instantaneous Peak Flow Discharge, in cfs, for Indicated Recurrence Interval 5-year 10-year 25-year 50-year 3,000 5,000 8,200 12,000 Surface Water Streamflow Data Page 28 100-year 15,800 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: USGS Gage: 5103 Name: Centennial Railroad Centennial Wash at SPRR, near Arlington, ID# 09517490 See USGS Water-Data Report AZ-96-1 for data for this site. Surface Water Streamflow Data Page 29 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: 5113 Name: Saddleback FRS Period of Record: 12/16/88 to current year Discharge, in cfs, Water Year October 1995 to September 1996 Day July 15 No outflows except on following day during Water Year 1996: Peak Discharge (cfs) 93 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------15 21 -----------------------------------------------------------------------------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 0 0 0 0 0 93 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 1996 TOTAL 21 MEAN 0 MAX 93 MIN 0 AC_FT 42 See also Pool Level and Storage Volume Data. Surface Water Streamflow Data Page 30 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: 5128 Name: Harquahala FRS Period of Record: 03/01/94 to current year Discharge, in cfs, Water Year October 1995 to September 1996 No outflow during Water Year 1996. OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------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 1996 TOTAL 0 MEAN 0 MAX 0 MIN 0 AC_FT 0 See also Pool Level and Storage Volume Data. Surface Water Streamflow Data Page 31 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: 5153 Name: Narrows Dam Period of Record: 09/01/94 to 05/09/96* Discharge, in cfs, Water Year October 1995 to September 1996 Day Nov. 1 Peak outflows of interest during Water Year 1996: Peak Discharge (cfs) 83 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 10 2 24 -----------------------------------------------------------------------------TOTAL 0 34 0 0 0 0 0 ----------MEAN 0 1 0 0 0 0 0 ----------MAX 0 83 0 0 0 0 0 ----------MIN 0 0 0 0 0 0 0 ----------AC_FT 0 68 0 0 0 0 0 ---------------------------------------------------------------------------------------WTR YR 1996 TOTAL 34 MEAN 0 MAX 83 MIN 0 AC_FT 68 * Gage out of service due removal of instrument by irrigation district. This site will be down until a new location is permitted. Surface Water Streamflow Data Page 32 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: 5203 Name: Buckeye FRS #1 Period of Record: Nov. 1987 to current year Discharge, in cfs, Water Year October 1995 to September 1996 Day July 15 Peak outflows of interest during Water Year 1996: Peak Discharge (cfs) 103* Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------15 31 16 6 -----------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 37 0 0 MEAN 0 0 0 0 0 0 0 0 0 1 0 0 MAX 0 0 0 0 0 0 0 0 0 103* 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 74 0 0 -----------------------------------------------------------------------------WTR YR 1996 TOTAL 37 MEAN 0 MAX 103* MIN 0 AC_FT 74 * Maximum from high water marks observed on morning of 07/15/1996. See also Pool Level and Storage Volume Data. Surface Water Streamflow Data Page 33 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: 5208 Name: Buckeye FRS #2 Period of Record: 11/11/92 to current year Discharge, in cfs, Water Year October 1995 to September 1996 Day Aug. 29 Sept. 5 Peak outflows of interest during Water Year 1996: Peak Discharge (cfs) 11 14 OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------TOTAL 0 0 0 0 1 4 0 0 0 0 2 2 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 2 1 3 0 0 0 0 11 14 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 1 8 0 0 0 0 3 4 -----------------------------------------------------------------------------WTR YR 1996 TOTAL 8 MEAN 0 MAX 14 MIN 0 AC_FT 16 See also Pool Level and Storage Volume Data. Surface Water Streamflow Data Page 34 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: USGS Gage: 5223 Name: Hassy nr Morristown Hassayampa River near Morristown, ID# 09516500 See USGS Water-Data Report AZ-96-1 for data for this site. 2-year 2,820 Flood Flow Frequency Magnitude and Probability of Instantaneous Peak Flow Discharge, in cfs, for Indicated Recurrence Interval 5-year 10-year 20-year 50-year 9,850 17,700 27,800 44,600 Surface Water Streamflow Data Page 35 100-year 59,900 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: 5228 Name: Hassayampa @ US 60 Period of Record: 03/14/94 to current year Discharge, in cfs, Water Year October 1995 to September 1996 Peak flows of interest during Water Year 1996: Peak Discharge (cfs) Day Peak Discharge (cfs) Day July 24 4,923 Sept. 10 112 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------10 4 11 2 25 40 26 27 -----------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 68 0 5 MEAN 0 0 0 0 0 0 0 0 0 2 0 0 MAX 0 0 0 0 0 0 0 0 0 4923 1 112 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 0 0 0 0 0 134 1 11 -----------------------------------------------------------------------------WTR YR 1996 TOTAL 73 MEAN 0 MAX 4923 MIN 0 AC_FT 146 Note: This gage location is a wide mobile sand bed channel. Therefore, data reliability is considered poor. See also gage 5308 upstream and USGS gage Hassayampa River near Morristown, 09516500, downstream for additional data. However, annual peak for 1996 considered fair due to observations of minimal bed change after July event. Discharge (cfs) Flood of July 25-26, 1996 on the Hassayampa River @ US 60 5000 4000 3000 2000 1000 0 7/25/96 23:00 7/25/96 23:30 7/26/96 0:00 7/26/96 0:30 7/26/96 1:00 Date Time Surface Water Streamflow Data Page 36 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: 5233 Name: Sunset FRS Period of Record: 02/12/89 to current year Discharge, in cfs, Water Year October 1995 to September 1996 Day Peak outflows of interest during Water Year 1996 assumming outlet gate fully open: Peak Discharge (cfs) Day Peak Discharge (cfs) Nov. 1 Feb. 26 Mar. 14 Sept. 11 12 10 12 23 July 26 July 28 Sept. 5 11 14 11 OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------TOTAL 0 34 0 0 17 49 0 0 0 67 17 278 MEAN 0 1 0 0 1 2 0 0 0 2 1 9 MAX 0 12 0 0 10 12 0 0 0 14 9 23 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 67 0 0 33 97 0 0 0 132 34 552 -----------------------------------------------------------------------------WTR YR 1996 TOTAL 461 MEAN 1 MAX 23 MIN 0 AC_FT 915 Note: Outflow based on assumption that the outlet gate is fully open. See also Pool Level and Storage Volume Data. Surface Water Streamflow Data Page 37 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: 5248 Name: Sunnycove FRS Period of Record: Nov. 1987 to current year Discharge, in cfs, Water Year October 1995 to September 1996 Day Peak outflows of interest during Water Year 1996 assumming outlet gate fully open: Peak Discharge (cfs) Sept. 11 29 OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 0 282 MEAN 0 0 0 0 0 0 0 0 0 0 0 9 MAX 0 0 0 0 0 0 0 0 0 0 0 29 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 0 560 -----------------------------------------------------------------------------WTR YR 1996 TOTAL 282 MEAN 1 MAX 29 MIN 0 AC_FT 560 Note: Outflow based on assumption that the outlet gate is fully open. See also Pool Level and Storage Volume Data. Surface Water Streamflow Data Page 38 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: 5283 Name: Hassayampa R @ I-10 Period of Record: 11/09/94 to current year Discharge, in cfs, Water Year October 1995 to September 1996 No flow during Water Year 1996. OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------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 1996 TOTAL 0 MEAN 0 MAX 0 MIN 0 AC_FT 0 Note: This location has a mobile sand bed with multiple channels. Therefore, data reliability should be considered poor. For example, for the event of July 15, outflows from Buckeye FRS #1 missed the gage. See also USGS gage Hassayampa River near Arlington, 09517000, for additional data. 5-year 7,500 Surface Water Streamflow Data Page 39 Flood Flow Frequency Magnitude and Probability of Instantaneous Peak Flow Discharge, in cfs, for Indicated Recurrence Interval 10-year 25-year 50-year 13,000 23,500 34,500 100-year 49,300 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: Period of Record: 5308 Name: Hassy @ Box Canyon USGS ID# 09515500 -- 1925, 1927, 1937, 1938 (annual peaks only); 1946-1982; FCDMC -- Nov. 1987 to current year Discharge, in cfs, Water Year October 1995 to September 1996 Peak flows of interest during Water Year 1996: Day Peak Discharge (cfs) July 25 Sept. 5 7,548 206 Day Peak Discharge (cfs) Aug. 19 152 Flood of July 25-26, 1996 on the Hassayampa River @ Box Canyon Discharge (cfs) 8000 6000 4000 2000 0 7/25/96 22:00 7/25/96 22:30 7/25/96 23:00 7/25/96 23:30 7/26/96 0:00 Date Time 2-year 4,030 Flood Flow Frequency Magnitude and Probability of Instantaneous Peak Flow Discharge, in cfs, for Indicated Recurrence Interval 5-year 10-year 20-year 50-year 12,400 21,600 33,700 54,700 100-year 74,800 Continued on following page. Surface Water Streamflow Data Page 40 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: Period of Record: 5308 Name: Hassy @ Box Canyon (continued) USGS ID# 09515500 -- 1925, 1927, 1937, 1938 (annual peaks only); 1946-1982; FCDMC -- Nov. 1987 to current year Discharge, in cfs, Water Year October 1995 to September 1996 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 4 12 2 4 1 3 4 1 4 3 1 5 3 38 6 3 7 4 3 8 3 9 4 10 3 11 2 12 3 13 3 14 2 15 3 16 3 17 2 18 2 19 31 20 1 21 1 22 1 23 1 24 1 25 230 1 26 23 1 27 6 1 28 6 5 29 6 2 30 --6 2 31 --------5 2 -------------------------------------------------------------------------------TOTAL 0 0 5 8 7 8 8 8 8 287 107 56 MEAN 0 0 0 0 0 0 0 0 0 9 3 2 MAX 0 0 0 0 0 0 0 0 0 7548 152 206 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 10 16 15 16 15 16 15 570 213 112 -----------------------------------------------------------------------------WTR YR 1996 TOTAL 502 MEAN 1 MAX 7548 MIN 0 AC_FT 996 Surface Water Streamflow Data Page 41 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: Period of Record: 5308 Name: Hassy @ Box Canyon USGS ID# 09515500 -- 1925, 1927, 1937, 1938 (annual peaks only); 1946-1982; FCDMC -- Nov. 1987 to current year Discharge, in cfs, Water Year October 1994 to September 1995 -- REVISED Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 73 248 41 2 76 244 32 3 75 234 28 4 77 225 27 5 325 66 212 23 6 57 56 2502 21 7 22 50 258 18 8 10 44 233 18 9 3 37 219 15 10 2 40 217 12 11 1 28 258 7 12 10 26 334 3 13 24 25 257 3 14 23 878 247 3 15 19 4316 235 2 16 16 119 232 2 17 15 138 230 6 18 15 131 221 6 19 12 129 213 7 20 9 140 213 9 21 10 149 203 6 22 9 159 197 1 23 9 176 173 24 7 214 149 25 8 194 118 1 26 539 197 102 27 130 201 86 28 82 219 72 29 85 --65 30 82 --55 31 --77 --49 -----------------------------------------------------------------------------------TOTAL 0 0 0 1602 8032 8301 291 0 0 0 0 0 MEAN 0 0 0 52 287 268 10 0 0 0 0 0 MAX 0 0 0 1414 13016 6974 48 0 0 0 0 2 MIN 0 0 0 0 22 40 0 0 0 0 0 0 AC_FT 0 0 0 3177 15932 16466 577 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 1995 TOTAL 18227 MEAN 50 MAX 13016 MIN 0 AC_FT 36152 Revisions based upon surveys following the winter 1995 flooding. Comparisons of revised hydrographs using the rating developed from the 1995 survey data to data collected by the USGS at the Morristown gage (09516500) shows strong argreement for all flows subsequent to the large flood on Jan. 8, 1993 (estimated peak at Box Canyon Q = 25,600 cfs). Surface Water Streamflow Data Page 42 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: Period of Record: 5308 Name: Hassy @ Box Canyon USGS ID# 09515500 -- 1925, 1927, 1937, 1938 (annual peaks only); 1946-1982; FCDMC -- Nov. 1987 to current year Discharge, in cfs, Water Year October 1993 to September 1994 -- REVISED Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 (1)-2 --3 --20 4 --5 --6 --7 --8 --21 9 --14 (2)-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 35 0 0 0 0 0 0 20 MEAN 0 0 0 0 1 0 0 0 0 0 0 1 MAX 0 0 0 0 66 0 0 0 0 0 0 175 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 70 0 0 0 0 0 0 40 -----------------------------------------------------------------------------WTR YR 1994 TOTAL 56 MEAN 0 MAX 175 MIN 0 AC_FT 110 (1) Gage out of service 11/1-11/18 due to channel scour. (2) Gage out of service 6/9-6/17 due to radio difficulties. Revisions based upon surveys following the winter 1995 flooding. Comparisons of revised hydrographs using the rating developed from the 1995 survey data to data collected by the USGS at the Morristown gage (09516500) shows strong argreement for all flows subsequent to the large flood on Jan. 8, 1993 (estimated peak at Box Canyon Q = 25,600 cfs). Surface Water Streamflow Data Page 43 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: 5353 Name: Hassy @ Wagoner Rd Period of Record: 09/26/91 to current year Discharge, in cfs, Water Year October 1995 to September 1996 Day July 14 Aug. 18 Sept. 5 Peak flows of interest during Water Year 1996: Peak Discharge (cfs) 83 50 143 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------5 25 6 16 7 24 8 13 14 11 18 1 19 2 -----------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 11 3 78 MEAN 0 0 0 0 0 0 0 0 0 0 0 3 MAX 0 0 0 0 0 0 0 0 0 83 50 143 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 7 155 -----------------------------------------------------------------------------WTR YR 1996 TOTAL 93 MEAN 0 MAX 143 MIN 0 AC_FT 184 Surface Water Streamflow Data Page 44 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: 5403 Name: Agua Fria @ Buckeye Period of Record: 10/12/88 to current year Discharge, in cfs, Water Year October 1995 to September 1996 No flow except on following days during Water Year 1996: Peak Discharge (cfs) Day Nov. 2 Aug. 15 Sept. 11 575 12 575 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------2 187 11 90 15 1 -----------------------------------------------------------------------------TOTAL 0 187 0 0 0 0 0 0 0 0 1 90 MEAN 0 6 0 0 0 0 0 0 0 0 0 3 MAX 0 575 0 0 0 0 0 0 0 0 12 575 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 372 0 0 0 0 0 0 0 0 2 179 -----------------------------------------------------------------------------WTR YR 1996 TOTAL 279 MEAN 1 MAX 575 MIN 0 AC_FT 553 Note: Severe drop due to rocks along the downstream side of the Buckeye Road bridge as well as two channels for lower flows introduce considerable error into the rating for flows less than about 3,500 cfs. The multiple channels also mean some lower flows are missed by the gage. Surface Water Streamflow Data Page 45 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: 5408 Name: Colter @ El Mirage Period of Record: 06/29/94 to current year Discharge, in cfs, Water Year October 1995 to September 1996 Day Aug. 14 Sept. 11 No flow except on following days during Water Year 1996: Peak Discharge (cfs) 12 35 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------11 14 14 1 -----------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 1 14 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 35 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 27 -----------------------------------------------------------------------------WTR YR 1996 TOTAL 14 MEAN 0 MAX 35 MIN 0 AC_FT 28 Surface Water Streamflow Data Page 46 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: 5413 Name: Dysart Drain @ LAFB Period of Record: 08/22/96 to current year Discharge, in cfs, Water Year October 1995 to September 1996 Peak flows of interest during Water Year 1996: Peak Discharge (cfs) Day July 15 Aug. 31 Sept. 2 195* 25 195 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 ----------------------6 2 ----------------------13 3 ----------------------1 31 --------------------2 -------------------------------------------------------------------------------TOTAL --------------------2 19 MEAN --------------------0 1 MAX --------------------25 195 MIN --------------------0 0 AC_FT --------------------4 39 -----------------------------------------------------------------------------WTR YR 1996 TOTAL 21 MEAN 0 MAX 195 MIN 0 AC_FT 42 Note: Gage installed and began operation on 08/22/1996. * Peak estimated using Manning’s equation with data from survey of channel and high water marks before installation of gage. Surface Water Streamflow Data Page 47 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: 5418 Name: White Tanks #3 FRS Period of Record: Nov. 1987 to current year Discharge, in cfs, Water Year October 1995 to September 1996 No outflow during Water Year 1996. OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------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 1996 TOTAL 0 MEAN 0 MAX 0 MIN 0 AC_FT 0 See also Pool Level and Storage Volume Data. Surface Water Streamflow Data Page 48 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: 5438 Name: McMicken Floodway Period of Record: 09/03/92 to current year Discharge, in cfs, Water Year October 1995 to September 1996 Peak flows of interest during Water Year 1996: Peak Discharge (cfs) Day July 15 Aug. 18 53 7 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------14 2 15 12 18 1 -----------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 14 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 53 7 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 28 2 0 -----------------------------------------------------------------------------WTR YR 1996 TOTAL 15 MEAN 0 MAX 53 MIN 0 AC_FT 30 Note: Flows during water year 1996 generated below McMicken Dam. No outflow occurred from McMicken Dam into the floodway during water year 1996. See gage ID# 5448. Surface Water Streamflow Data Page 49 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: 5448 Name: McMicken Dam Period of Record: Nov. 1987 to current year Discharge, in cfs, Water Year October 1995 to September 1996 No outflow during Water Year 1996. OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------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 1996 TOTAL 0 MEAN 0 MAX 0 MIN 0 AC_FT 0 See also Pool Level and Storage Volume Data. Surface Water Streamflow Data Page 50 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: USGS Gage: 5503 Name: Agua Fria @ Grand Agua Fria at El Mirage, ID# 09513650 See USGS Water-Data Report AZ-96-1 for data for this site. Surface Water Streamflow Data Page 51 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: USGS Gage: 5508 Name: NewRiver @ Glendale New River near Glendale, AZ, ID# 09513910 See USGS Water-Data Report AZ-96-1 for data for this site. Surface Water Streamflow Data Page 52 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: 5523 Name: ACDC @ 67 Av Period of Record: 06/07/90 to current year Discharge, in cfs, Water Year October 1995 to September 1996 Peak flows of interest during Water Year 1996: Peak Discharge (cfs) Day Peak Discharge (cfs) Day Nov. 1 Feb. 2 Mar. 14 * 1,692* 604 196 July 15 Aug. 15 Sept. 11 697 604 895 Maximum for period of record. Flood of Nov. 1, 1995 at ACDC @ 67th Ave Discharge (cfs) 2000 1500 1000 500 0 11/1/95 18:00 11/2/95 0:00 11/2/95 6:00 11/2/95 12:00 11/2/95 18:00 Date Time 2-year 1,900 Flood Flow Frequency Magnitude and Probability of Instantaneous Peak Flow Discharge, in cfs, for Indicated Recurrence Interval 5-year 10-year 25-year 50-year 4,500 7,700 13,500 20,600 100-year 29,000 Continued on following page. Surface Water Streamflow Data Page 53 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: 5523 Name: ACDC @ 67 Av Period of Record: 06/07/90 to current year Discharge, in cfs, Water Year October 1995 to September 1996 (continued) Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 97 177 12 11 122 3 6 22 2 33 433 13 11 159 2 8 24 3 14 210 12 11 30 5 31 4 11 78 13 11 11 22 5 10 33 12 11 8 1 10 6 9 32 12 11 4 49 7 8 20 12 10 7 7 118 8 9 14 12 10 7 3 32 9 13 13 12 10 2 121 15 10 13 13 12 10 5 25 11 11 13 13 12 11 4 6 368 12 13 12 11 10 1 22 89 13 13 12 11 10 4 5 4 39 14 13 13 11 10 83 5 9 98 26 15 13 13 12 10 18 304 144 20 16 13 13 12 10 1 103 103 17 17 13 13 11 10 1 79 20 15 18 13 13 11 10 1 5 1 13 19 13 13 12 10 11 20 13 13 13 10 8 21 12 13 13 10 1 2 22 13 12 12 10 1 23 13 12 12 10 3 24 12 13 12 10 25 11 12 12 10 27 26 11 12 12 10 73 195 27 11 12 12 10 19 30 28 11 12 12 10 5 20 29 11 12 11 10 14 30 11 12 11 10 --8 123 31 11 --11 10 ------1 36 -------------------------------------------------------------------------------TOTAL 473 1271 370 320 468 112 10 0 0 978 544 942 MEAN 15 42 12 10 16 4 0 0 0 32 18 31 MAX 152 1692* 13 11 604 196 18 0 2 697 604 895 MIN 8 11 11 9 0 0 0 0 0 0 0 0 AC_FT 937 2521 733 635 928 223 20 0 0 1940 1080 1869 -----------------------------------------------------------------------------WTR YR 1996 TOTAL 5488 MEAN 15 MAX 1692* MIN 0 AC_FT 10886 * Maximum for period of record. Surface Water Streamflow Data Page 54 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: 5523 Name: ACDC @ 67 Av Period of Record: 06/07/90 to current year Discharge, in cfs, Water Year October 1993 to September 1994 -- REVISED Day Oct. 6 Sept. 2 Peak flows of interest during Water Year 1994: Peak Discharge (cfs) Day Peak Discharge (cfs) 1,380 1,626 Nov. 15 519 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 1 137 3 1 150 4 1 39 5 67 6 317 20 7 274 4 26 3 13 8 165 43 29 3 9 9 108 13 1 1 3 10 27 1 11 7 8 13 5 12 1 7 3 14 13 48 44 14 106 74 15 278 17 16 2 189 11 17 23 72 9 18 13 13 19 3 19 6 16 20 33 1 21 15 22 13 23 24 1 25 5 20 32 26 104 3 27 11 13 28 1 1 2 3 29 --2 2 26 30 --3 1 31 --1 --1 -----------------------------------------------------------------------------------TOTAL 939 715 0 6 60 240 14 55 5 67 11 643 MEAN 30 24 0 0 2 8 0 2 0 2 0 21 MAX 1380 519 0 14 72 257 22 90 13 70 12 1626 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 1862 1418 0 12 119 476 28 110 10 133 23 1275 -----------------------------------------------------------------------------WTR YR 1994 TOTAL 2755 MEAN 8 MAX 1626 MIN 0 AC_FT 5465 Revisions to Water Year 1994 and 1995 data based upon reevaluation of instrument installation level in May 1992. Base value of the pressure transducer found to be 0.2 feet lower than previously indicated. Surface Water Streamflow Data Page 55 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: 5523 Name: ACDC @ 67 Av Period of Record: 06/07/90 to current year Discharge, in cfs, Water Year October 1994 to September 1995 -- REVISED Day Jan. 5 Aug. 21 Peak flows of interest during Water Year 1995: Peak Discharge (cfs) Day Peak Discharge (cfs) 499 1,062 Mar. 6 Sept. 28 407 1,520 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 7 7 8 6 12 10 11 15 11 14 2 7 5 5 9 13 10 11 15 13 13 3 7 6 4 7 13 9 13 15 14 13 4 7 21 3 8 13 8 13 14 14 13 5 21 260 3 9 13 6 13 14 14 13 6 88 206 2 212 13 3 13 14 14 13 7 14 253 190 12 2 13 14 14 22 8 10 235 241 11 1 14 14 15 14 9 5 204 179 11 7 13 14 15 13 10 3 159 45 10 8 13 13 15 13 11 3 55 27 11 7 13 13 15 12 12 2 6 29 148 11 4 14 14 25 11 13 4 16 2 197 13 1 14 17 18 11 14 4 12 8 115 12 13 14 15 10 15 84 5 10 5 31 12 14 15 86 10 16 64 4 8 162 18 12 14 20 32 10 17 29 4 16 235 13 19 4 15 15 24 10 18 7 4 10 247 13 17 4 15 15 21 10 19 3 8 225 12 17 5 14 15 21 10 20 3 8 162 11 19 8 14 15 187 10 21 3 7 68 12 17 8 13 15 353 10 22 6 6 31 12 15 8 13 15 63 10 23 104 2 19 11 13 9 13 15 42 10 24 59 2 8 11 13 9 13 15 34 9 25 42 8 11 13 10 14 14 24 9 26 220 22 10 13 9 14 12 22 10 27 37 89 10 12 10 14 12 20 10 28 3 16 200 3 11 10 10 14 11 19 453 29 7 12 179 --11 8 10 15 11 18 332 30 8 16 73 --11 8 10 15 11 16 223 31 --8 20 --11 --10 --11 15 -------------------------------------------------------------------------------TOTAL 184 20 736 2138 1203 1612 383 202 406 439 1209 1320 MEAN 6 1 24 69 43 52 13 7 14 14 39 44 MAX 213 8 313 499 257 407 20 10 15 25 1062 1520 MIN 0 0 2 2 0 2 7 0 11 10 11 9 AC_FT 365 39 1460 4240 2386 3197 759 401 805 871 2398 2618 -----------------------------------------------------------------------------WTR YR 1995 TOTAL 9851 MEAN 27 MAX 1520 MIN 0 AC_FT 19539 Note: Low flows at this location have been influenced by backwater effects from a periodically reconstructed rockpile footbridge across the low flow channel downstream. Flows below 100 cfs are therefore potentially overestimated. Revisions to Water Year 1994 and 1995 data based upon reevaluation of instrument installation level in May 1992. Base value of the pressure transducer found to be 0.2 feet lower than previously indicated. Surface Water Streamflow Data Page 56 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: 5538 Name: Adobe Dam Outlet Period of Record: Nov. 1987 to current year Discharge, in cfs, Water Year October 1995 to September 1996 Day Nov. 2 Aug. 15 Sept. 6 Peak flows of interest during Water Year 1996: Peak Discharge (cfs) 77 62 10 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 2 31 3 9 4 1 15 26 16 2 -----------------------------------------------------------------------------TOTAL 0 43 0 0 0 0 0 0 0 0 28 0 MEAN 0 1 0 0 0 0 0 0 0 0 1 0 MAX 0 77 0 0 0 0 0 0 0 0 62 10 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 86 0 0 0 0 0 0 0 0 55 1 -----------------------------------------------------------------------------WTR YR 1996 TOTAL 71 MEAN 0 MAX 77 MIN 0 AC_FT 141 Surface Water Streamflow Data Page 57 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: 5543 Name: Scatter Wash Period of Record: 09/18/96 to current year Discharge, in cfs, Water Year October 1995 to September 1996 No flow since installation OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------TOTAL ----------------------0 MEAN ----------------------0 MAX ----------------------- 210* MIN ----------------------0 AC_FT ----------------------0 -----------------------------------------------------------------------------WTR YR 1996 TOTAL 0 MEAN 0 MAX 210* MIN 0 AC_FT 0 Note: Gage installed on 09/18/1996. * Maximum from high water observed on 9/11/96 during gage installation preparation. Surface Water Streamflow Data Page 58 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: USGS Gage: 5568 Name: Skunk Creek @ I-17 Skunk Creek near Phoenix, AZ, ID# 09513860 See USGS Water-Data Report AZ-96-1 for data for this site. 2-year 1,000 Flood Flow Frequency Magnitude and Probability of Instantaneous Peak Flow Discharge, in cfs, for Indicated Recurrence Interval 5-year 10-year 25-year 50-year 6,500 8,000 13,000 18,000 Surface Water Streamflow Data Page 59 100-year 25,000 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: 5583 Name: Skunk Cr. nr New R. Period of Record: 06/21/95 to current year Discharge, in cfs, Water Year October 1995 to September 1996 Day Feb. 26 Sept. 10 Peak flows of interest during Water Year 1996: Peak Discharge (cfs) 2 18 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------10 1 26 1 27 2 -----------------------------------------------------------------------------TOTAL 0 0 0 0 3 0 0 0 0 0 0 1 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 2 0 0 0 0 0 0 18 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 6 0 0 0 0 0 0 3 -----------------------------------------------------------------------------WTR YR 1996 TOTAL 4 MEAN 0 MAX 18 MIN 0 AC_FT 9 Flood Flow Frequency Magnitude and Probability of Instantaneous Peak Flow Discharge, in cfs, for Indicated Recurrence Interval 10-year 50-year 100-year 1,730 2,500 3,650 Surface Water Streamflow Data Page 60 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: 5598 Name: New River @ Bell Period of Record: 04/04/90 to current year* Discharge, in cfs, Water Year October 1995 to September 1996 Day Aug. 14 Sept. 6 Peak flows of interest during Water Year 1996: Peak Discharge (cfs) 41 64 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------6 1 14 1 -----------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 1 1 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 41 64 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 2 -----------------------------------------------------------------------------WTR YR 1996 TOTAL 2 MEAN 0 MAX 64 MIN 0 AC_FT 3 * USGS period of record: water years 1963, 1965-67 (annual maximums only), 1968-1984, June 1990Sept. 1993. Also, FCDMC gage out from 10/01/93 to 05/12/94 during construction of new bridge. Surface Water Streamflow Data Page 61 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: 5598 Name: New River @ Bell Period of Record: 04/04/90 to current year* Discharge, in cfs, Water Year October 1994 to September 1995 -- REVISED Day Jan. 6 Peak flows of interest during Water Year 1995: Peak Discharge (cfs) Day Peak Discharge (cfs) 1,461 Feb. 16 1,369 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 580 6 1138 65 7 519 320 8 214 136 9 65 38 10 7 2 11 12 229 13 376 14 188 15 775 53 16 1072 17 484 18 180 19 81 20 21 21 22 23 24 25 26 284 27 712 28 426 29 185 --30 47 --31 --27 --------------------------------------------------------------------------------------TOTAL 0 0 0 4204 2613 1406 0 0 0 0 0 0 MEAN 0 0 0 136 93 45 0 0 0 0 0 0 MAX 0 0 0 1461 1369 482 0 0 0 0 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 8338 5182 2789 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 1995 TOTAL 8223 MEAN 23 MAX 1461 MIN 0 AC_FT 16310 Water Year 1995 data was revised to compensate for observed draw down of the water surface around the pier on which the pressure transducer was mounted. The pressure transducer was subsequently moved upstream out of the draw down area. * USGS period of record: water years 1963, 1965-67 (annual maximums only), 1968-1984, June 1990-Sept. 1993. Also, FCDMC gage out from 10/01/93 to 05/12/94 during construction of new bridge. Surface Water Streamflow Data Page 62 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: 5613 Name: New River Outlet Period of Record: Nov. 1987 to current year Discharge, in cfs, Water Year October 1995 to September 1996 No flow during Water Year 1996. OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------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 1996 TOTAL 0 MEAN 0 MAX 0 MIN 0 AC_FT 0 See also Pool Level and Storage Volume Data. Surface Water Streamflow Data Page 63 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: 6503 Name: Guadalupe FRS Period of Record: 06/29/89 to current year Discharge, in cfs, Water Year October 1995 to September 1996 No flow during Water Year 1996. OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------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 1996 TOTAL 0 MEAN 0 MAX 0 MIN 0 AC_FT 0 See also Pool Level and Storage Volume Data. Surface Water Streamflow Data Page 64 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: 6563 Name: South Mountain Fan Period of Record: 06/09/93 to current year Discharge, in cfs, Water Year October 1995 to September 1996 Peak flows of interest during Water Year 1996: Peak Discharge (cfs) Day Nov. 1 349 OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------TOTAL 0 6 0 0 0 0 0 0 0 0 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 349 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 12 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 1996 TOTAL 6 MEAN 0 MAX 349 MIN 0 AC_FT 12 Discharge (cfs) Flood of Nov. 1, 1995 at South Mountain Fan 350 300 250 200 150 100 50 0 11/1/95 20:00 11/1/95 21:00 11/1/95 22:00 11/1/95 23:00 11/2/95 0:00 Date Time 2-year 295 Flood Flow Frequency Magnitude and Probability of Instantaneous Peak Flow Discharge, in cfs, for Indicated Recurrence Interval 5-year 10-year 25-year 50-year 720 1,020 1,700 2,210 Surface Water Streamflow Data Page 65 100-year 2,720 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: 6563 Name: South Mountain Fan Period of Record: 06/09/93 to current year Discharge, in cfs, Water Year October 1994 to September 1995 -- REVISED Day Sept. 28 Peak flows of interest during Water Year 1995: Peak Discharge (cfs) 121 OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 0 1 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 0 0 121 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 2 -----------------------------------------------------------------------------WTR YR 1996 TOTAL 1 MEAN 0 MAX 121 MIN 0 AC_FT 2 Revisions based on newly computed rating curve. Surface Water Streamflow Data Page 66 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: 6573 Name: EMF @ Broadway Period of Record: 08/10/89 to current year Discharge, in cfs, Water Year October 1995 to September 1996 Peak flows of interest during Water Year 1996: Peak Discharge (cfs) Day Sept 2 3,837 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------2 565 -----------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 0 565 MEAN 0 0 0 0 0 0 0 0 0 0 0 19 MAX 0 0 0 0 0 0 0 0 0 0 0 3837 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 1121 -----------------------------------------------------------------------------WTR YR 1996 TOTAL 565 MEAN 2 MAX 3837 MIN 0 AC_FT 1121 Flood of Sept. 2, 1996 on the EMF @ Broadway Road Discharge (cfs) 4000 3000 2000 1000 0 9/2/96 0:00 9/2/96 2:00 9/2/96 4:00 9/2/96 6:00 9/2/96 8:00 9/2/96 10:00 9/2/96 12:00 Date Time Surface Water Streamflow Data Page 67 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: 6583 Name: EMF @ Queen Creek Period of Record: 01/18/89 to current year Discharge, in cfs, Water Year October 1995 to September 1996 Day Feb. 3 Sept. 14 Peak flows of interest during Water Year 1996: Peak Discharge (cfs) Day Peak Discharge (cfs) 80 155 Sept. 2 1,613 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 19 516 3 78 100 4 55 76 5 21 60 6 49 7 38 8 30 9 22 10 16 11 9 12 13 13 36 14 100 15 77 16 60 17 45 18 33 19 25 20 26 21 14 22 3 23 1 -----------------------------------------------------------------------------TOTAL 0 0 0 0 173 0 0 0 0 0 0 1347 MEAN 0 0 0 0 6 0 0 0 0 0 0 45 MAX 0 0 0 0 80 0 0 0 0 0 0 1613 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 344 0 0 0 0 0 0 2673 -----------------------------------------------------------------------------WTR YR 1996 TOTAL 1521 MEAN 4 MAX 1613 MIN 0 AC_FT 3016 Surface Water Streamflow Data Page 68 FCDMC Annual Surface Water Report Water Year 1996 Flood of Sept. 2, 1996 on the EMF @ Queen Creek Road Discharge (cfs) 2000 1500 1000 500 0 9/2/96 6:00 9/2/96 12:00 9/2/96 18:00 9/3/96 0:00 9/3/96 6:00 9/3/96 12:00 Date Time Surface Water Streamflow Data Page 69 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: 6598 Name: EMF @ Arizona Ave. Period of Record: 02/10/89 to current year Discharge, in cfs, Water Year October 1995 to September 1996 Day Sept. 2 Peak flows of interest during Water Year 1996: Peak Discharge (cfs) Day Peak Discharge (cfs) 632 Sept. 15 93 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 142 3 76 4 45 5 32 6 25 7 19 8 12 9 10 10 11 12 13 14 15 38 16 40 17 36 18 32 19 31 20 1 21 22 23 24 25 26 27 28 29 30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 0 538 MEAN 0 0 0 0 0 0 0 0 0 0 0 18 MAX 0 0 0 0 0 0 0 0 0 0 0 632 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 1068 -----------------------------------------------------------------------------WTR YR 1996 TOTAL 538 MEAN 1 MAX 632 MIN 0 AC_FT 1068 Surface Water Streamflow Data Page 70 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: 6628 Name: Signal Butte FRS Period of Record: 11/10/87 to current year Discharge, in cfs, Water Year October 1995 to September 1996 No outflow during Water Year 1996.* DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------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 1996 TOTAL 0 MEAN 0 MAX 0 MIN 0 AC_FT 0 * No outflow through the principle outlet. However, some impoundment was experienced during Water Year 1996. See also Pool Level and Storage Volume Data. Surface Water Streamflow Data Page 71 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: 6673 Name: Apache Jct. FRS Period of Record: Nov. 1987 to current year Discharge, in cfs, Water Year October 1995 to September 1996 Day Aug. 22 Aug. 28 Peak outflows of interest during Water Year 1996: Peak Discharge (cfs) Day Peak Discharge (cfs) 15 16 Aug. 27 22 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------22 1 23 1 27 2 28 6 29 2 30 --1 -----------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 13 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 22 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 27 0 -----------------------------------------------------------------------------WTR YR 1996 TOTAL 13 MEAN 0 MAX 22 MIN 0 AC_FT 27 See also Pool Level and Storage Volume Data. Surface Water Streamflow Data Page 72 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: 6683 Name: Powerline FRS Period of Record: 12/03/92 to current year Discharge, in cfs, Water Year October 1995 to September 1996 Peak outflows of interest during Water Year 1996: Peak Discharge (cfs) Day Peak Discharge (cfs) Day Nov.2 July 9 Aug. 11 Sept. 2 7 8 6 18 Feb. 1 July 14 Aug. 27 9 13 9 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 2 14 3 11 4 5 5 3 6 1 7 8 9 1 10 11 1 1 12 2 13 5 14 1 7 15 1 5 16 3 17 18 19 20 21 22 23 24 25 26 27 1 28 29 30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 2 0 0 0 0 3 2 58 MEAN 0 0 0 0 0 0 0 0 0 0 0 2 MAX 0 7 0 0 9 0 0 0 0 13 9 18 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 1 0 0 4 0 0 0 0 6 5 116 -----------------------------------------------------------------------------WTR YR 1996 TOTAL 66 MEAN 0 MAX 18 MIN 0 AC_FT 131 Note: Outflows from Vineyard FRS backup through the Powerline outlet pipe and record on gage. Therefore, some “outflows” may represent backwater from Vineyard FRS outflows. See data for Station 6688. See also Pool Level and Storage Volume Data. Surface Water Streamflow Data Page 73 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: 6688 Name: Vineyard FRS Period of Record: Nov. 1987 to current year Discharge, in cfs, Water Year October 1995 to September 1996 Day Feb. 1 Sept. 2 Peak outflows of interest during Water Year 1996: Peak Discharge (cfs) Day Peak Discharge (cfs) 2 56 July 15 Sept. 14 7 62 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 46 3 53 4 46 5 33 6 32 7 27 8 18 9 11 10 7 11 5 12 15 13 37 14 1 60 15 5 50 16 3 38 17 26 18 18 19 12 20 7 21 5 22 3 23 24 25 26 27 28 29 30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 9 0 550 MEAN 0 0 0 0 0 0 0 0 0 0 0 18 MAX 0 0 0 0 2 0 0 0 0 7 0 62 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 1 0 0 0 0 18 0 1090 -----------------------------------------------------------------------------WTR YR 1996 TOTAL 559 MEAN 2 MAX 62 MIN 0 AC_FT 1109 See also Pool Level and Storage Volume Data. Surface Water Streamflow Data Page 74 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: 6703 Name: Rittenhouse FRS Period of Record: 09/27/88 to current year Discharge, in cfs, Water Year October 1995 to September 1996 Peak outflows of interest during Water Year 1996: Peak Discharge (cfs) Day Peak Discharge (cfs) Day Nov. 2 July 9 Aug. 8 Sept. 5 Sept. 13 13 53 8 77 84 Feb. 1 July 26 Sept. 2 Sept. 11 5 5 96 104* Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP ----------------------------------------------------------------------------1 1 2 2 2 78 3 72 4 15 5 32 6 37 7 8 9 24 1 10 1 11 38 12 87 13 70 14 66 15 9 16 17 18 19 20 21 22 23 24 25 26 1 27 28 29 30 --31 -------------------------------------------------------------------------------------TOTAL 0 2 0 0 3 0 0 0 0 25 2 504 Surface Water Streamflow Data Page 75 FCDMC Annual Surface Water Report Water Year 1996 MEAN 0 0 0 0 0 0 0 0 0 1 0 17 MAX 0 13 0 0 5 0 0 0 0 53 8 104* MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 5 0 0 6 0 0 0 0 50 4 999 ----------------------------------------------------------------------------WTR YR 1996 TOTAL 536 MEAN 1 MAX 104* MIN 0 AC_FT 1063 * Maximum from high water marks surveyed on 9/13/96. See also Pool Level and Storage Volume Data. Surface Water Streamflow Data Page 76 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: 6713 Name: Queen Ck.@ Rittenhouse Period of Record: 09/14/93 to current year Discharge, in cfs, Water Year October 1995 to September 1996 No flow above gage during Water Year 1996. Minimum flow recorded by gage is about 105 cfs at 1.4 ft gage height. Day July 14 Peak Discharge (cfs) 65* OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------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 65* 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 1996 TOTAL 0 MEAN 0 MAX 65* MIN 0 AC_FT 0 * Estimated from high water marks below instrument at 1.2 ft gage height. Therefore, no volume (acft) or mean flow data available. Surface Water Streamflow Data Page 77 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: 6813 Name: Buckeye FRS #3 Period of Record: 11/23/92 to current year Discharge, in cfs, Water Year October 1995 to September 1996 Day Feb. 1 July 14 Aug. 29 Sept. 5 Peak outflows of interest during Water Year 1996: Peak Discharge (cfs) Day Peak Discharge (cfs) 5 18 3 7 Mar. 14 Aug. 14 Sept. 4 3 4 34 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 1 4 5 14 15 4 1 1 1 2 29 1 30 --1 -----------------------------------------------------------------------------TOTAL 0 0 0 0 1 1 0 0 0 3 2 5 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 5 3 0 0 0 18 4 34 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 0 0 2 1 0 0 0 6 4 10 -----------------------------------------------------------------------------WTR YR 1996 TOTAL 11 MEAN 0 MAX 34 MIN 0 AC_FT 22 See also Pool Level and Storage Volume Data. Surface Water Streamflow Data Page 78 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: 6823 Name: White Tanks #4 FRS Period of Record: Nov. 1987 to current year Discharge, in cfs, Water Year October 1995 to September 1996 No outflow during Water Year 1996. OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------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 1996 TOTAL 0 MEAN 0 MAX 0 MIN 0 AC_FT 0 See also Pool Level and Storage Volume Data. Surface Water Streamflow Data Page 79 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: USGS Gage: 6853 Name: Gila @ Estrella Pky Gila River at Estrella Parkway, ID# 09514100 See USGS Water-Data Report AZ-96-1 for data for this site. 5-year 20,000 Flood Flow Frequency Magnitude and Probability of Instantaneous Peak Flow Discharge, in cfs, for Indicated Recurrence Interval 10-year 20-year 50-year 50,000 84,000 170,000 Surface Water Streamflow Data Page 80 100-year 217,000 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: 6893 Name: Estrella Fan Period of Record: 04/30/93 to current year Discharge, in cfs, Water Year October 1995 to September 1996 No flow during Water Year 1996. OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------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 1996 TOTAL 0 MEAN 0 MAX 0 MIN 0 AC_FT 0 2-year 278 Flood Flow Frequency Magnitude and Probability of Instantaneous Peak Flow Discharge, in cfs, for Indicated Recurrence Interval 5-year 10-year 25-year 50-year 541 809 1,279 1,607 Surface Water Streamflow Data Page 81 100-year 1,953 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: 6923 Name: Sauceda Wash Period of Record: 02/28/90 to current year** Discharge, in cfs, Water Year October 1995 to September 1996 No flow recorded during Water Year 1996.* OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------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 1996 TOTAL 0 MEAN 0 MAX 0 MIN 0 AC_FT 0 * Possible multiple events missed in July and August due to failure of gage. See also USGS crest stage gage, 09519760, data for this site. ** USGS maintained a crest stage gage at this location from 11/27/63 to 09/30/79. In 1990 a joint USGS/FCDMC continuous station was installed. The USGS continuous station was discontinued 10/01/94. Since Water Year 1995, the continuous station has been operated by FCDMC and the crest stage gage by the USGS. 2-year 500 Flood Flow Frequency Magnitude and Probability of Instantaneous Peak Flow Discharge, in cfs, for Indicated Recurrence Interval 5-year 10-year 25-year 50-year 1,800 2,600 4,000 5,800 Surface Water Streamflow Data Page 82 100-year 8,200 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: USGS Gage: 6983 Name: Vekol Wash Vekol Wash near Stanfield, AZ, ID# 09488650 See USGS Water-Data Report AZ-96-1 for data for this site. Surface Water Streamflow Data Page 83 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: 7013 Name: Martinez Creek Period of Record: 11/23/94 to current year Discharge, in cfs, Water Year October 1995 to September 1996 Peak flows of interest during Water Year 1996: Peak Discharge (cfs) Day Peak Discharge (cfs) Day Aug. 27 Aug. 30 Sept. 5 Sept. 8 Sept. 10 199 14 192 60 138 Aug. 29 Aug. 31 Sept. 7 Sept. 9 Sept. 13 14 14 42 102 60 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 5 3 6 7 4 8 5 9 9 10 8 11 18 12 13 1 14 15 16 17 18 19 20 21 22 23 24 25 26 27 5 28 1 29 1 30 --7 31 --------2 -------------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 16 50 MEAN 0 0 0 0 0 0 0 0 0 0 1 2 MAX 0 0 0 0 0 0 0 0 0 0 199 192 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 31 99 -----------------------------------------------------------------------------WTR YR 1996 TOTAL 66 MEAN 0 MAX 199 MIN 0 AC_FT 130 Note: Flows below 3,000 cfs are considered approximate at best due to multiple channel configuration of Martinez Creek in this area. Surface Water Streamflow Data Page 84 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: 7043 Name: Sols Wsh nr Matthie Period of Record: 08/04/95 to current year Discharge, in cfs, Water Year October 1995 to September 1996 Day July 28 Sept. 10 Peak flows of interest during Water Year 1996: Peak Discharge (cfs) 119 79 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------10 4 28 4 -----------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 4 0 4 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 119 0 79 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 8 -----------------------------------------------------------------------------WTR YR 1996 TOTAL 7 MEAN 0 MAX 119 MIN 0 AC_FT 15 Surface Water Streamflow Data Page 85 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: 7063 Name: Hartman Wash Period of Record: 07/06/94 to current year Discharge, in cfs, Water Year October 1995 to September 1996 No flow except on following day during Water Year 1996: Peak Discharge (cfs) Day Sept. 11 46 OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 0 1 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 46 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 2 -----------------------------------------------------------------------------WTR YR 1996 TOTAL 1 MEAN 0 MAX 46 MIN 0 AC_FT 2 Note: Gage relocated to upstream right bank of bridge on 1/25/96. See also USGS crest stage gage, 09515800, data at this location. Period of record for USGS crest gage: Water Years 1964-1979 and 1992 to current year. 2-year 220 Flood Flow Frequency Magnitude and Probability of Instantaneous Peak Flow Discharge, in cfs, for Indicated Recurrence Interval 5-year 10-year 25-year 50-year 1,100 1,800 3,900 4,400 Surface Water Streamflow Data Page 86 100-year 6,600 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: 7063 Name: Hartman Wash Period of Record: 07/06/94 to current year Discharge, in cfs, Water Year October 1994 to September 1995 -- REVISED No flow except on following day during Water Year 1995: Peak Discharge (cfs) Day Aug. 14 779* OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------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 0 779* 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 6** 0 -----------------------------------------------------------------------------WTR YR 1995 TOTAL 3** MEAN 0 MAX 779* MIN 0 AC_FT 6** * Maximum from USGS crest stage gage as reported in Water Data Report -AZ-95-1 ** Total of daily means and ac-ft for Aug. and Water Year 1995 underestimated since they are derived from the hydrograph collected by the ALERT instrument. The peak of this hydrograph was much lower than that estimated at the USGS crest stage gage. See also USGS crest stage gage, 09515800, data at this location. Period of record for USGS crest gage: Water Years 1964-1979 and 1992 to current year. Surface Water Streamflow Data Page 87 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: 7083 Name: Flying E Wash Period of Record: 07/12/94 to present year Discharge, in cfs, Water Year October 1995 to September 1996 Day Peak flows of interest during Water Year 1996: Peak Discharge (cfs) Day Peak Discharge (cfs) Nov. 1 Sept. 11 26 297* July 28 10 Daily Mean Values OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 1 5 2 10 11 4 6 28 3 -----------------------------------------------------------------------------TOTAL 0 1 0 0 0 0 0 0 0 3 0 11 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 26 0 0 0 0 0 0 0 10 9 297* MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 2 0 0 0 0 0 0 0 5 0 22 -----------------------------------------------------------------------------WTR YR 1996 TOTAL 15 MEAN 0 MAX 297* MIN 0 AC_FT 30 * Estimated from high water marks at the gage. 10-year 1,000 Flood Flow Frequency Magnitude and Probability of Instantaneous Peak Flow Discharge, in cfs, for Indicated Recurrence Interval 50-year 4,500 Surface Water Streamflow Data Page 88 100-year 6,500 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: 7083 Name: Flying E Wash Period of Record: 07/12/94 to present year Discharge, in cfs, Water Year October 1994 to September 1995 -- REVISED Day Jan. 25 Aug. 15 Peak flows of interest during Water Year 1995: Peak Discharge (cfs) Day Peak Discharge (cfs) 55 41 Feb. 14 119 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 3 4 3 5 5 6 7 8 9 10 11 12 13 14 6 15 2 6 16 17 18 19 20 21 22 23 24 25 3 4 26 7 27 1 28 29 --30 --31 ---------------------------------------------------------------------------------------TOTAL 0 0 3 19 9 0 0 0 0 0 6 0 MEAN 0 0 0 1 0 0 0 0 0 0 0 0 MAX 0 0 12 55 119 0 0 0 0 0 41 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 AC_FT 0 0 5 38 18 0 0 0 0 0 13 0 -----------------------------------------------------------------------------WTR YR 1995 TOTAL 37 MEAN 0 MAX 119 MIN 0 AC_FT 74 Revisions due to reevaluation of instrument base value. Instrument diaphragm found 0.1 feet higher than previously believed. Surface Water Streamflow Data Page 89 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: 7083 Name: Flying E Wash Period of Record: 07/12/94 to present year Discharge, in cfs, Water Year October 1993 to September 1994 -- REVISED Day Sept. 20 Peak flows of interest during Water Year 1994: Peak Discharge (cfs) 51 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 ------------------14 ------------------15 ------------------16 ------------------17 ------------------18 ------------------19 ------------------20 ------------------1 21 ------------------4 22 ------------------3 23 ------------------24 ------------------25 ------------------26 ------------------27 ------------------28 ------------------29 ------------------30 ------------------31 -------------------------------------------------------------------------------------------------TOTAL ------------------0 0 8 MEAN ------------------0 0 0 MAX ------------------0 0 51 MIN ------------------0 0 0 AC_FT ------------------0 0 16 -----------------------------------------------------------------------------WTR YR 1994 TOTAL 8 MEAN 0 MAX 51 MIN 0 AC_FT 16 (1) Gage installed and began operation on 7/12/1994. Revisions due to reevaluation of elevation of instrument. Instrument diaphragm found to be 0.1 feet higher than previously believed. Surface Water Streamflow Data Page 90 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: 7093 Name: Casandro Wash Period of Record: 07/12/94 to current year Discharge, in cfs, Water Year October 1995 to September 1996 Day No flow except on following day during Water Year 1996: Peak Discharge (cfs) Sept. 10 35 OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------TOTAL 0 0 0 0 0 0 0 0 0 0 0 1 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 35 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 2 -----------------------------------------------------------------------------WTR YR 1996 TOTAL 1 MEAN 0 MAX 35 MIN 0 AC_FT 2 10-year 50 Flood Flow Frequency Magnitude and Probability of Instantaneous Peak Flow Discharge, in cfs, for Indicated Recurrence Interval 50-year 500 Surface Water Streamflow Data Page 91 100-year 800 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: 7113 Name: Powder House Wash Period of Record: 05/18/95 to current year Discharge, in cfs, Water Year October 1995 to September 1996 No significant flow during Water Year 1996.* OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------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 1996 TOTAL 0 MEAN 0 MAX 0 MIN 0 AC_FT 0 * Flow occured during event of 9/11/96. However, water did not reach the instrument due to the very small magnitude of the flow (< 5 cfs). 10-year 300 Flood Flow Frequency Magnitude and Probability of Instantaneous Peak Flow Discharge, in cfs, for Indicated Recurrence Interval 50-year 1,300 Surface Water Streamflow Data Page 92 100-year 1,900 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Streamflow Station Number: 7133 Name: Casandro Dam Period of Record: 08/15/96 to current year Discharge, in cfs, Water Year October 1995 to September 1996 Peak outflow occurred on the following day during Water Year 1996: Peak Discharge (cfs) Day Sept. 11 15 OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------TOTAL --------------------0 12 MEAN --------------------0 0 MAX --------------------0 15 MIN --------------------0 0 AC_FT --------------------0 23 -----------------------------------------------------------------------------WTR YR 1996 TOTAL 12 MEAN 0 MAX 15 MIN 0 AC_FT 23 Note: Gage installed and began operation on 08/15/1996. Surface Water Streamflow Data Page 93 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Reservoir Depths Station Number: 4563 Name: Spookhill FRS Period of Record: Nov. 1987 to current year Depth, in feet, Water Year October 1995 to September 1996 Day Sept. 2 Maximum impoundments of interest during Water Year 1996: Maximum Level (ft) 5.6 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 0.6 0.7 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 2 0.6 0.8 0.6 0.6 0.7 0.6 0.6 0.6 0.6 0.6 0.6 4.7 3 0.6 0.7 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 4.7 4 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 4.3 5 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 3.9 6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 3.6 7 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 3.3 8 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 3.1 9 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 2.9 10 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 2.7 11 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 2.6 12 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 2.7 13 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 2.6 14 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.7 0.6 2.5 15 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.7 0.6 2.3 16 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 2.2 17 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 2.1 18 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 1.9 19 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 1.8 20 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 1.8 21 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 1.8 22 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 1.6 23 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 1.3 24 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 1.0 25 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.8 26 0.6 0.6 0.6 0.6 0.7 0.6 0.6 0.6 0.6 0.7 0.6 0.6 27 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 28 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.7 0.6 29 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 30 0.6 0.6 0.6 0.6 --0.6 0.6 0.6 0.6 0.6 0.6 0.6 31 0.6 --0.6 0.6 --0.6 --0.6 --0.6 0.6 -------------------------------------------------------------------------------MEAN 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 2.2 MAX 0.6 0.9 0.6 0.6 1.0 0.6 0.6 0.6 0.6 0.8 0.7 5.6 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 1996 MEAN 0.77 MAX 5.6 MIN 0.6 See also Surface Water Streamflow and Storage Volume Data. Pool Level Data Page 1 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Reservoir Depths Station Number: 4648 Name: E.Fork CC #1 Period of Record: 03/02/94 to current year Depth, in feet, Water Year October 1995 to September 1996 Day Feb. 1 July 25 Maximum impoundments of interest during Water Year 1996: Maximum Level (ft) Day Maximum Level (ft) 0.95 0.63 July 14 Sept. 2 1.10 0.20 OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------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 0.9 0.1 0.1 0.1 0.1 1.1 0.1 0.2 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 1996 MEAN 0.10 MAX 1.1 MIN 0.1 See also Surface Water Streamflow and Storage Volume Data. Pool Level Data Page 2 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Reservoir Depths Station Number: 4658 Name: E.Fork CC #4 Period of Record: 01/18/94 to current year Depth, in feet, Water Year October 1995 to September 1996 Day Nov. 1 Feb. 25 July 14 Sept. 2 Maximum impoundments of interest during Water Year 1996: Maximum Level (ft) Day Maximum Level (ft) 1.30 1.55 2.03 1.88 Feb. 1 July 9 July 25 Sept. 11 2.72 1.63 1.77 1.88 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 0.0 0.2 0.0 0.0 0.6 0.3 0.0 0.0 0.0 0.0 0.0 0.0 2 0.0 0.1 0.0 0.0 0.2 0.2 0.0 0.0 0.0 0.0 0.0 0.4 3 0.0 0.0 0.0 0.0 0.1 0.1 0.0 0.0 0.0 0.0 0.0 0.1 4 0.0 0.0 0.0 0.0 0.1 0.1 0.0 0.0 0.0 0.0 0.0 0.0 5 0.0 0.0 0.0 0.0 0.1 0.1 0.0 0.0 0.0 0.0 0.0 0.2 6 0.0 0.3 0.0 0.0 0.1 0.1 0.0 0.0 0.0 0.0 0.0 0.1 7 0.0 0.0 0.0 0.0 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 8 0.0 0.0 0.0 0.0 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 9 0.0 0.0 0.0 0.0 0.1 0.0 0.0 0.0 0.0 0.3 0.0 0.0 10 0.0 0.0 0.0 0.0 0.1 0.0 0.0 0.0 0.0 0.1 0.0 0.0 11 0.0 0.0 0.0 0.0 0.1 0.0 0.0 0.0 0.0 0.1 0.0 0.4 12 0.0 0.0 0.0 0.0 0.1 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 0.3 0.0 0.0 0.0 0.1 0.1 0.0 15 0.0 0.0 0.0 0.0 0.0 0.1 0.0 0.0 0.0 0.3 0.1 0.0 16 0.0 0.0 0.0 0.0 0.0 0.1 0.0 0.0 0.0 0.1 0.0 0.0 17 0.0 0.0 0.0 0.0 0.2 0.1 0.0 0.0 0.0 0.1 0.0 0.0 18 0.0 0.0 0.0 0.0 0.3 0.1 0.0 0.0 0.0 0.1 0.0 0.0 19 0.0 0.0 0.0 0.0 0.3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 20 0.0 0.0 0.0 0.0 0.2 0.0 0.0 0.0 0.0 0.0 0.1 0.0 21 0.0 0.0 0.0 0.0 0.3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 22 0.0 0.0 0.0 0.0 0.3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 23 0.0 0.0 0.0 0.0 0.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 24 0.0 0.0 0.0 0.0 0.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 25 0.0 0.0 0.0 0.0 0.6 0.0 0.0 0.0 0.0 0.2 0.0 0.0 26 0.0 0.0 0.0 0.0 0.5 0.0 0.0 0.0 0.0 0.3 0.0 0.0 27 0.0 0.0 0.0 0.0 0.5 0.0 0.0 0.0 0.0 0.1 0.0 0.0 28 0.0 0.0 0.0 0.0 0.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 29 0.0 0.0 0.0 0.0 0.4 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 0.2 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 0.2 0.0 0.0 0.0 0.0 0.1 0.0 0.0 MAX 0.0 1.3 0.0 0.9 2.7 0.7 0.0 0.0 0.0 2.0 1.0 1.9 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 1996 MEAN 0.03 MAX 2.7 MIN 0.0 See also Surface Water Streamflow and Storage Volume Data. Pool Level Data Page 3 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Reservoir Depths Station Number: 4683 Name: E.Fork CC #3 Period of Record: 09/13/94 to current year Depth, in feet, Water Year October 1995 to September 1996 No significant impoundment during Water Year 1996.* OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------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 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 1996 MEAN 0.2 MAX 0.2 MIN 0.2 * Flows up to about the 2-year are passed beneath the detention basin via storm drains. See also Surface Water Streamflow and Storage Volume Data. Pool Level Data Page 4 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Reservoir Depths Station Number: 4803 Name: Dreamy Draw Dam Period of Record: Nov. 1987 to current year Depth, in feet, Water Year October 1995 to September 1996 Day Nov. 1 Feb. 1 Maximum impoundments of interest during Water Year 1996: Maximum Level (ft) Day Maximum Level (ft) 1.12 3.32 Nov. 7 July 16 1.03 1.66 OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------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 1.1 0.0 0.0 3.3 0.0 0.0 0.0 0.0 1.7 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 1996 MEAN 0.00 MAX 3.3 MIN 0.0 See also Surface Water Streamflow and Storage Volume Data. Pool Level Data Page 5 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Reservoir Depths Station Number: 4803 Name: Dreamy Draw Dam Period of Record: Nov. 1987 to current year Depth, in feet, Water Year October 1994 to September 1995 -- REVISED Day Dec. 25 Jan. 5 Aug. 20 Maximum impoundments of interest during Water Year 1995: Maximum Level (ft) Day Maximum Level (ft) 1.15 1.95 2.25 Dec. 26 Aug. 19 Sept. 27 1.03 5.03 10.30 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 0.7 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 6 0.0 0.0 0.0 0.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 7 0.0 0.0 0.0 0.3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 8 0.0 0.0 0.0 0.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 9 0.0 0.0 0.0 0.1 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 0.2 0.0 20 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.2 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 0.0 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 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 26 0.0 0.0 0.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 27 0.0 0.0 0.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.2 28 0.0 0.0 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.6 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 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 MAX 0.0 0.0 1.1 2.0 0.0 0.0 0.0 0.0 0.0 0.0 5.0 10.3 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 1995 MEAN 0.01 MAX 10.3 MIN 0.0 Revision to instrument datum did not affect depth of water recorded. See also Surface Water Streamflow and Storage Volume Data. Pool Level Data Page 6 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Reservoir Depths Station Number: 4904 Name: Cave Buttes Dam Period of Record: Nov. 1987 to current year Depth, in feet, Water Year October 1995 to September 1996 Day Nov. 2 Aug. 15 Sept. 7 Maximum impoundments of interest during Water Year 1996: Maximum Level (ft) Day Maximum Level (ft) 12.78 10.87 6.93 July 15 Sept. 2 8.84 6.48 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2.0 2.7 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2 2.0 10.7 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 3.0 3 2.0 2.5 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 3.3 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 2.2 14 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.1 2.8 2.0 15 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 4.9 5.5 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 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 2.3 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.1 2.1 2.1 MAX 2.0 12.8 2.0 2.0 2.0 2.0 2.0 2.0 2.0 8.8 10.9 6.9 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 1996 MEAN 2.04 MAX 12.8 MIN 2.0 See also Storage Volume Data. Pool Level Data Page 7 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Reservoir Depths Station Number: 4938 Name: Reata Pass Dam Period of Record: 02/25/93 to current year Depth, in feet, Water Year October 1995 to September 1996 Maximum impoundments of interest during Water Year 1996: Maximum Level (ft) Day Maximum Level (ft) Day Aug. 14 Sept. 11 1.75 1.95 Aug. 29 7.20* Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 0.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2 0.2 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 1.1 12 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.3 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 0.4 0.0 15 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.3 0.0 16 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.9 0.0 17 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.5 0.0 18 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.2 0.0 19 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 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 0.6 0.0 30 0.0 0.0 0.0 0.0 --0.0 0.0 0.0 0.0 0.0 1.5 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 0.2 0.1 MAX 0.6 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 7.2* 2.0 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 1996 MEAN 0.02 MAX 7.2* MIN 0.0 Note: Gage readings from 8/29-9/27/1996 suspect due to instrument failure. Therefore, daily mean values also suspect. Also, mean depths for 10/1-2/1995 are from the recession limb of the 9/28/95 event. * Maximum from observations of high water marks on staff gage. Pool Level Data Page 8 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Reservoir Depths Station Number: 5113 Name: Saddleback FRS Period of Record: 12/16/88 to current year Depth, in feet, Water Year October 1995 to September 1996 Day July 15 No impoundments during Water Year 1996 except on the following day: Maximum Level (ft) 2.50 OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------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 2.5 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 1996 MEAN 0.30 MAX 2.5 MIN 0.3 See also Surface Water Streamflow and Storage Volume Data. Pool Level Data Page 9 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Reservoir Depths Station Number: 5128 Name: Harquahala FRS Period of Record: 03/01/94 to current year Depth, in feet, Water Year October 1995 to September 1996 Day Nov. 1 No impoundments during Water Year 1996 except on the following days: Maximum Level (ft) Day Maximum Level (ft) 1.25 Aug. 14 1.25 OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------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 1.2 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 1.2 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 1996 MEAN 0.76 MAX 1.2 MIN 0.8 See also Surface Water Streamflow and Storage Volume Data. Pool Level Data Page 10 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Reservoir Depths Station Number: 5203 Name: Buckeye FRS #1 Period of Record: Nov. 1987 to current year Depth, in feet, Water Year October 1995 to September 1996 No impoundment during Water Year 1996 except on following day: Maximum Level (ft) Day July 15 1.5* OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------MEAN -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.4 -2.5 -2.5 MAX -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 1.5* -2.5 -2.5 MIN -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -----------------------------------------------------------------------------WTR YR 1996 MEAN -2.48 MAX 1.5* MIN -2.5 Note: * Instrument 2.48 ft below gage datum at invert elevation of principle outlet which is located in a depressed drop box type inlet structure. Gage datum of 0.0 feet is taken to be the point at the top of the drop box which is level with the ground around the inlet structure. See also Surface Water Streamflow and Storage Volume Data. Maximum from high water marks observed on morning of 07/15/1996. Pool Level Data Page 11 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Reservoir Depths Station Number: 5208 Name: Buckeye FRS #2 Period of Record: 11/11/92 to current year Depth, in feet, Water Year October 1995 to September 1996 Maximum impoundments of interest during Water Year 1996: Maximum Level (ft) Day Maximum Level (ft) Day Aug. 29 -0.31 Sept. 5 -0.09 OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------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 -1.3 -1.4 -1.2 -1.4 -1.4 -1.4 -1.4 -0.3 -0.1 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 1996 MEAN -1.39 MAX -0.1 MIN -1.4 Note: Instrument 1.39 ft below gage datum at invert elevation of principle outlet which is located in a depressed drop box type inlet structure. Gage datum of 0.0 feet is taken to be the point at the top of the drop box which is level with the ground around the inlet structure. See also Surface Water Streamflow and Storage Volume Data. Pool Level Data Page 12 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Reservoir Depths Station Number: 5233 Name: Sunset FRS Period of Record: 02/12/89 to current year Depth, in feet, Water Year October 1995 to September 1996 Day Mar. 14 Sept. 11 Maximum impoundments of interest during Water Year 1996: Maximum Level (ft) Day Maximum Level (ft) 2.08 7.20 July 28 2.58 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 0.7 1.0 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 1.2 0.7 2 0.7 1.6 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.9 0.7 3 0.7 1.3 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 4 0.7 1.1 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 1.2 6 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 1.1 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 0.8 11 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 6.2 12 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 6.5 13 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 6.5 14 0.7 0.7 0.7 0.7 0.7 1.8 0.7 0.7 0.7 0.7 0.7 6.5 15 0.7 0.7 0.7 0.7 0.7 1.6 0.7 0.7 0.7 0.7 0.7 6.5 16 0.7 0.7 0.7 0.7 0.7 1.4 0.7 0.7 0.7 0.7 0.7 5.4 17 0.7 0.7 0.7 0.7 0.7 1.2 0.7 0.7 0.7 0.7 0.7 4.2 18 0.7 0.7 0.7 0.7 0.7 0.9 0.7 0.7 0.7 0.7 0.7 4.2 19 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 4.2 20 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 4.2 21 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 4.2 22 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 4.2 23 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 4.2 24 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 2.5 25 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.8 0.7 0.7 26 0.7 0.7 0.7 0.7 0.9 0.7 0.7 0.7 0.7 1.4 0.7 0.7 27 0.7 0.7 0.7 0.7 1.1 0.7 0.7 0.7 0.7 1.2 0.7 0.7 28 0.7 0.7 0.7 0.7 0.8 0.7 0.7 0.7 0.7 2.4 0.7 0.7 29 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 2.0 0.7 0.7 30 0.7 0.7 0.7 0.7 --0.7 0.7 0.7 0.7 1.6 0.7 0.7 31 0.7 --0.7 0.7 --0.7 --0.7 --1.4 0.7 -------------------------------------------------------------------------------MEAN 0.7 0.8 0.7 0.7 0.7 0.8 0.7 0.7 0.7 0.9 0.7 2.7 MAX 0.7 1.9 0.7 0.7 1.3 2.1 0.7 0.7 0.7 2.6 1.2 7.2 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 1996 MEAN 0.90 MAX 7.2 MIN 0.7 See also Surface Water Streamflow and Storage Volume Data. Pool Level Data Page 13 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Reservoir Depths Station Number: 5248 Name: Sunnycove FRS Period of Record: Nov. 1987 to current year Depth, in feet, Water Year October 1995 to September 1996 Maximum impoundment of interest during Water Year 1996: Maximum Level (ft) Day Sept. 11 7.13 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 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2 1.5 1.5 1.5 1.5 1.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 3 1.5 1.5 1.5 1.5 1.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 4 1.5 1.5 1.5 1.5 1.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 5 1.5 1.5 1.5 1.5 1.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 6 1.5 1.5 1.5 1.5 1.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 7 1.5 1.5 1.5 1.5 1.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 8 1.5 1.5 1.5 1.5 1.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 9 1.5 1.5 1.5 1.5 1.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 10 1.5 1.5 1.5 1.5 1.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 11 1.5 1.5 1.5 1.5 1.5 0.0 0.0 0.0 0.0 0.0 0.0 5.7 12 1.5 1.5 1.5 1.5 1.5 0.0 0.0 0.0 0.0 0.0 0.0 5.0 13 1.5 1.5 1.5 1.5 1.5 0.0 0.0 0.0 0.0 0.0 0.0 4.8 14 1.5 1.5 1.5 1.5 1.5 0.0 0.0 0.0 0.0 0.0 0.0 4.8 15 1.5 1.5 1.5 1.5 1.5 0.0 0.0 0.0 0.0 0.0 0.0 4.6 16 1.5 1.5 1.5 1.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 3.8 17 1.5 1.5 1.5 1.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2.7 18 1.5 1.5 1.5 1.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.2 19 1.5 1.5 1.5 1.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.4 20 1.5 1.5 1.5 1.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.3 21 1.5 1.5 1.5 1.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.3 22 1.5 1.5 1.5 1.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.2 23 1.5 1.5 1.5 1.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 24 1.5 1.5 1.5 1.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 25 1.5 1.5 1.5 1.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 26 1.5 1.5 1.5 1.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 27 1.5 1.5 1.5 1.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 28 1.5 1.5 1.5 1.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 29 1.5 1.5 1.5 1.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 30 1.5 1.5 1.5 1.5 --0.0 0.0 0.0 0.0 0.0 0.0 0.0 31 1.5 --1.5 1.5 --0.0 --0.0 --0.0 0.0 -------------------------------------------------------------------------------MEAN 1.5 1.5 1.5 1.5 0.8 0.0 0.0 0.0 0.0 0.0 0.0 1.1 MAX 1.5 1.5 1.5 1.5 1.5 0.0 0.0 0.0 0.0 0.0 0.0 7.1 MIN 1.5 1.5 1.5 1.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 -----------------------------------------------------------------------------WTR YR 1996 MEAN 0.66 MAX 7.1 MIN 0.0 Note: Instrument moved and gage datum redefined on 2/16/1996. See also Surface Water Streamflow and Storage Volume Data. Pool Level Data Page 14 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Reservoir Depths Station Number: 5418 Name: White Tanks #3 FRS Period of Record: Nov. 1987 to current year Depth, in feet, Water Year October 1995 to September 1996 No impoundment above gage during Water Year 1996.* OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------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 1996 MEAN 0.00 MAX 0.0 MIN 0.0 * Significant storage volume exists below the instrument level due to the borrow pits behind the dam. The storage volume behind the dam at the instrument level is 74 acre-feet. See also Surface Water Streamflow and Storage Volume Data. Pool Level Data Page 15 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Reservoir Depths Station Number: 5448 Name: McMicken Dam Period of Record: Nov. 1987 to current year Depth, in feet, Water Year October 1995 to September 1996 No significant impoundment during Water Year 1996. OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------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 1996 MEAN 0.00 MAX 0.0 MIN 0.0 See also Surface Water Streamflow and Storage Volume Data. Pool Level Data Page 16 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Reservoir Depths Station Number: 5539 Name: Adobe Dam Period of Record: Nov. 1987 to present Depth, in feet, Water Year October 1995 to September 1996 Day Nov. 2 Maximum impoundments of interest during Water Year 1996: Maximum Level (ft) Day Maximum Level (ft) 1.76 Aug. 15 1.95 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 0.0 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2 0.0 0.8 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 3 0.0 0.1 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 0.1 7 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 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 0.9 0.0 16 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 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 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 1.8 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2.0 0.7 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 1996 MEAN 0.01 MAX 2.0 MIN 0.0 See also Surface Water Streamflow and Storage Volume Data. Pool Level Data Page 17 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Reservoir Depths Station Number: 5614 Name: New River Dam Period of Record: Nov. 1987 to current year Depth, in feet, Water Year October 1995 to September 1996 No significant impoundment during Water Year 1996. DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------MEAN 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 MAX 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 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 1996 MEAN 2.9 MAX 2.9 MIN 2.9 See also Surface Water Streamflow and Storage Volume Data. 2-year 7.4 Pool Level Data Page 18 Flood Elevation Frequency Magnitude and Probability of Elevation of Impoundment Elevation, in gage height (ft), for Indicated Recurrence Interval 5-year 10-year 25-year 50-year 12.4 31 40 46.9 100-year 53.9 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Reservoir Depths Station Number: 6503 Name: Guadalupe FRS Period of Record: 06/29/89 to current year Depth, in feet, Water Year October 1995 to September 1996 No significant impoundment during Water Year 1996. OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------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 1996 MEAN 0.00 MAX 0.0 MIN 0.0 See also Surface Water Streamflow and Storage Volume Data. Pool Level Data Page 19 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Reservoir Depths Station Number: 6608 Name: Freestone Basin Period of Record: 12/19/96 to current year Depth, in feet, Water Year October 1995 to September 1996 Rainfall produced impoundments of interest during Water Year 1996: Maximum Level (ft) Day Maximum Level (ft) Day July 11 Sept. 2 5.07 6.40 Aug. 29 5.82 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 ------0.1 1.2 0.1 0.7 0.8 0.8 1.5 4.1 4.2 2 ------0.1 1.0 0.1 0.8 1.0 0.9 2.9 2.3 6.0 3 ------0.0 0.2 0.1 0.8 1.0 0.9 3.4 2.9 5.1 4 ------0.0 0.7 0.1 0.8 1.0 0.9 3.6 3.5 2.6 5 ------0.0 0.3 0.1 0.9 1.1 2.3 2.1 4.0 1.2 6 ------0.0 0.3 0.1 0.5 0.5 4.0 2.7 4.1 1.1 7 ------0.1 0.6 0.1 0.8 0.5 3.4 3.7 3.2 1.3 8 ------0.0 0.7 0.1 0.9 0.8 3.1 3.7 3.3 1.3 9 ------0.1 0.6 0.8 0.5 0.3 3.1 4.5 3.5 1.3 10 ------0.1 0.6 0.9 0.3 0.4 3.1 5.0 3.7 1.3 11 ------0.1 0.6 0.9 0.7 0.8 3.3 5.0 3.9 1.2 12 ------0.1 0.6 0.6 0.8 1.0 2.3 2.1 4.0 0.7 13 ------0.1 0.2 0.4 1.1 0.8 4.2 2.5 4.1 0.9 14 ------0.0 0.1 0.9 1.2 0.8 4.6 3.4 4.1 1.1 15 ------0.0 0.1 1.0 0.8 0.9 4.6 2.1 4.2 1.1 16 ------0.1 0.1 0.6 0.3 1.2 4.5 3.1 3.2 1.1 17 ------0.1 0.1 0.7 0.6 1.3 3.0 3.4 4.0 1.1 18 ------0.2 0.1 0.6 0.8 1.0 3.0 3.6 4.4 1.1 19 ----0.0 0.3 0.1 0.1 0.4 1.0 3.3 2.0 4.6 0.9 20 ----0.0 0.1 0.1 0.1 0.2 1.0 3.8 3.1 3.1 1.0 21 ----0.0 0.2 0.1 0.3 0.5 0.4 2.8 3.6 3.0 1.1 22 ----0.0 0.2 0.1 0.4 0.7 0.8 4.5 3.9 3.6 1.1 23 ----0.0 0.1 0.1 0.7 0.9 0.9 5.3 2.3 2.7 1.1 24 ----0.0 0.1 0.1 0.7 1.4 0.4 3.8 3.1 3.1 1.1 25 ----0.0 0.1 0.1 0.7 1.2 0.8 3.1 3.7 3.5 1.1 26 ----0.0 0.1 1.2 0.7 1.3 0.9 3.5 3.5 3.1 1.1 27 ----0.0 0.1 0.7 0.7 0.6 0.9 1.5 3.1 3.5 1.1 28 ----0.1 0.1 0.1 0.8 0.8 1.0 2.8 3.6 5.5 1.1 29 ----0.1 0.1 0.1 0.3 0.4 0.9 3.4 3.8 4.0 1.2 30 ----0.1 0.1 --0.6 0.4 0.6 3.6 3.9 2.3 0.7 31 ----0.1 0.1 --0.7 --0.6 --4.0 3.9 -------------------------------------------------------------------------------MEAN ----0.0 0.1 0.4 0.5 0.7 0.8 3.1 3.3 3.6 1.5 MAX ----0.3 0.8 1.5 1.3 1.6 1.5 5.3 5.4 5.8 6.4 MIN ----0.0 0.0 0.1 0.1 0.1 0.1 0.1 0.1 0.2 0.1 -----------------------------------------------------------------------------WTR YR 1996 MEAN 1.18 MAX 6.4 MIN 0.0 Note: Gage installed and began operation on 12/19/1996. Also, many days of impoundment due to irrigation tailwater. See also Storage Volume Data. Pool Level Data Page 20 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Reservoir Depths Station Number: 6623 Name: Crossroads Park Period of Record: 12/18/96 to current year Depth, in feet, Water Year October 1995 to September 1996 No significant impoundment during Water Year 1996. OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------MEAN ----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 MIN ----1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 -----------------------------------------------------------------------------WTR YR 1996 MEAN 1.33 MAX 1.3 MIN 1.3 Note: Gage installed and began operation on 12/18/1996. See also Storage Volume Data. Pool Level Data Page 21 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Reservoir Depths Station Number: 6628 Name: Signal Butte FRS Period of Record: 11/10/87 to current year Depth, in feet, Water Year October 1995 to September 1996 Day Aug. 23 Sept. 2 Maximum impoundments of interest during Water Year 1996: Maximum Level (ft) Day Maximum Level (ft) 2.75 2.78 Aug. 28 4.90 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 0.7 0.0 0.0 0.0 0.3 0.0 0.0 0.0 0.0 0.0 0.0 2.4 2 0.5 0.0 0.0 0.0 0.4 0.0 0.0 0.0 0.0 0.0 0.0 2.5 3 0.3 0.0 0.0 0.0 0.3 0.0 0.0 0.0 0.0 0.0 0.0 2.4 4 0.1 0.0 0.0 0.0 0.1 0.0 0.0 0.0 0.0 0.0 0.0 2.2 5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2.1 6 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2.0 7 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.9 8 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.8 9 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.6 10 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.5 11 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.5 12 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.4 13 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.3 14 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.3 15 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.3 16 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.0 17 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.7 18 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.3 19 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 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 0.7 0.0 23 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2.6 0.0 24 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2.2 0.0 25 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2.0 0.0 26 0.0 0.0 0.0 0.0 0.1 0.0 0.0 0.0 0.0 0.0 1.8 0.0 27 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.9 0.0 28 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 4.5 0.0 29 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 3.9 0.0 30 0.0 0.0 0.0 0.0 --0.0 0.0 0.0 0.0 0.0 3.3 0.0 31 0.0 --0.0 0.0 --0.0 --0.0 --0.0 2.9 -------------------------------------------------------------------------------MEAN 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.8 1.0 MAX 0.9 0.1 0.0 0.0 0.8 0.0 0.0 0.0 0.0 0.2 4.9 2.8 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 1996 MEAN 0.16 MAX 4.9 MIN 0.0 See also Surface Water Streamflow and Storage Volume Data. Pool Level Data Page 22 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Reservoir Depths Station Number: 6673 Name: Apache Jct. FRS Period of Record: Nov. 1987 to present Depth, in feet, Water Year October 1995 to September 1996 Day Aug. 22 Aug. 28 Maximum impoundments of interest during Water Year 1996: Maximum Level (ft) Day Maximum Level (ft) 2.06 2.26 Aug.27 3.36 OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------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 3.4 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 1996 MEAN 0.18 MAX 3.4 MIN 0.2 See also Surface Water Streamflow and Storage Volume Data. Pool Level Data Page 23 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Reservoir Depths Station Number: 6683 Name: Powerline FRS Period of Record: 12/03/92 to current year Depth, in feet, Water Year October 1995 to September 1996 Day July 14 Maximum impoundments of interest during Water Year 1996: Maximum Level (ft) Day Maximum Level (ft) 1.00 Sept. 2 1.65 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 0.3 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 1.2 3 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.8 4 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.4 5 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.3 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 0.3 13 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.4 14 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.3 0.2 0.5 15 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.4 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 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 0.3 MAX 0.2 0.4 0.2 0.2 0.6 0.2 0.2 0.2 0.2 1.0 0.6 1.6 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 1996 MEAN 0.21 MAX 1.6 MIN 0.2 Note: Impoundments shown 9/12-15/1996 result from backwater from the Powerline Floodway flows out of Vineyard FRS (gage ID# 6688). See also Surface Water Streamflow and Storage Volume Data. Pool Level Data Page 24 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Reservoir Depths Station Number: 6688 Name: Vineyard FRS Period of Record: Nov. 1987 to current year Depth, in feet, Water Year October 1995 to September 1996 Day July 15 Sept. 14 Maximum impoundments of interest during Water Year 1996: Maximum Level (ft) Day Maximum Level (ft) 1.08 3.40 Sept. 2 3.20 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 0.1 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 2.7 3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 3.1 4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2.8 5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2.4 6 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2.3 7 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2.2 8 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.7 9 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.3 10 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.1 11 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.8 12 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.6 13 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2.5 14 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.0 3.3 15 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.9 0.0 3.0 16 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.5 0.0 2.5 17 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.0 2.1 18 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.7 19 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.4 20 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.1 21 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.9 22 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.5 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 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 0.0 1.4 MAX 0.0 0.0 0.0 0.0 0.4 0.0 0.0 0.0 0.0 1.1 0.0 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 1996 MEAN 0.12 MAX 3.4 MIN 0.0 See also Surface Water Streamflow and Storage Volume Data. Pool Level Data Page 25 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Reservoir Depths Station Number: 6703 Name: Rittenhouse FRS Period of Record: 09/27/88 to current year Depth, in feet, Water Year October 1995 to September 1996 Day July 9 Sept. 5 Sept. 13 Maximum impoundments of interest during Water Year 1996: Maximum Level (ft) Day Maximum Level (ft) 3.90 5.85 6.70 Sept. 2 Sept. 11 8.40 9.70* 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 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2 0.0 0.3 0.0 0.0 0.4 0.0 0.0 0.0 0.0 0.0 0.0 6.6 3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 5.5 4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.4 5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2.4 6 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 3.0 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 0.1 0.0 9 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2.0 0.2 0.0 10 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 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 3.3 12 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 7.1 13 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 5.3 14 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 5.0 15 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.0 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 0.1 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 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 0.0 1.4 MAX 0.0 1.5 0.0 0.0 0.8 0.0 0.0 0.0 0.0 3.9 1.1 9.7* 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 1996 MEAN 0.12 MAX 9.7* MIN 0.0 * Maximum from high water marks surveyed on 9/13/96. See also Surface Water Streamflow and Storage Volume Data. Pool Level Data Page 26 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Reservoir Depths Station Number: 6813 Name: Buckeye FRS #3 Period of Record: 11/23/92 to current year Depth, in feet, Water Year October 1995 to September 1996 Maximum impoundments of interest during Water Year 1996: Maximum Level (ft) Day Maximum Level (ft) Day July 14 -2.20 Sept. 4 -1.05 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 -3.3 -4.1 -4.1 -4.1 -4.0 -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 -3.7 5 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.0 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 -4.0 -4.1 -4.1 -4.1 -4.0 -4.0 -4.1 15 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -3.9 -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 -4.1 -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 -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 -3.5 -3.8 -4.1 -4.1 -4.1 -2.2 -3.7 -1.1 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 1996 MEAN -4.08 MAX -1.1 MIN -4.1 Note: Instrument 4.08 ft below gage datum at invert elevation of principle outlet which is located in a depressed drop box type inlet structure. Gage datum of 0.0 feet is taken to be the point at the top of the drop box which is level with the ground around the inlet structure. See also Surface Water Streamflow and Storage Volume Data. Pool Level Data Page 27 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Reservoir Depths Station Number: 6823 Name: White Tanks #4 FRS Period of Record: Nov. 1987 to current year Depth, in feet, Water Year October 1995 to September 1996 No impoundment above gage during Water Year 1996.* OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------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 1996 MEAN 0.00 MAX 0.0 MIN 0.0 * Significant storage volume exists below the instrument level due to the large borrow pits behind the dam. The storage volume behind the dam at the instrument level is 585 acre-feet. See also Surface Water Streamflow and Storage Volume Data. Pool Level Data Page 28 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Reservoir Depths Station Number: 7133 Name: Casandro Dam Period of Record: 08/15/96 to current year Depth, in feet, Water Year October 1995 to September 1996 Maximum impoundments of interest during Water Year 1996: Maximum Level (ft) Day Sept. 11 5.8 OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------MEAN --------------------- -0.1 0.0 MAX --------------------- -0.1 5.8 MIN --------------------- -0.1 -0.1 -----------------------------------------------------------------------------WTR YR 1996 MEAN -0.07 MAX 5.8 MIN -0.1 Note: Instrument located 0.08 ft below outlet invert which is taken as 0.00 ft gage datum. Also, the gage was installed and began operation on 08/15/1996. See also Surface Water Streamflow and Storage Volume Data. Pool Level Data Page 29 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Storage Volumes Station Number: 4562 Name: Spookhill FRS Cap Period of Record: Nov. 1987 to current year Volume, in acre feet, Water Year October 1995 to September 1996 No significant storage during Water Year 1996.* OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------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 1996 MEAN 0 MAX 0 MIN 0 * Storage rating curve begins at 11.5 feet gage height. At 12.0 feet the rating shows 149 ac-ft of storage. See also Surface Water Streamflow and Pool Level Data. Storage Volume Data Page 1 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Storage Volumes Station Number: 4647 Name: E.Fork CC #1 Cap Period of Record: 03/02/94 to current year Volume, in acre feet, Water Year October 1995 to September 1996 Day Feb. 1 No storage during Water Year 1996 except on following days: Maximum Storage Maximum Storage (ac-ft) (% full) Day (ac-ft) (% full) 1 1.2 July 14 1 1.2 OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 1 0 0 0 0 1 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 1996 MEAN 0 MAX 1 MIN 0 See also Surface Water Streamflow and Pool Level Data. Storage Volume Data Page 2 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Storage Volumes Station Number: 4657 Name: E.Fork CC #4 Cap Period of Record: 01/18/94 to current year Volume, in acre feet, Water Year October 1995 to September 1996 Day Nov. 1 Feb. 25 July 14 Sept. 2 Maximum impoundments of interest during Water Year 1996: Maximum Storage Maximum Storage (ac-ft) (% full) Day (ac-ft) (% full) 1 1 1 1 1.4 1.4 1.4 1.4 Feb. 1 July 9 July 25 Sept. 11 3 1 1 1 4.1 1.4 1.4 1.4 OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 1 0 0 3 0 0 0 0 1 0 1 MIN 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 1996 MEAN 0 MAX 3 MIN 0 See also Surface Water Streamflow and Pool Level Data. Storage Volume Data Page 3 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Storage Volumes Station Number: 4682 Name: E.Fork CC #3 Cap Period of Record: 09/13/94 to current year Volume, in acre feet, Water Year October 1995 to September 1996 No significant storage during Water Year 1996.* OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------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 1996 MEAN 0 MAX 0 MIN 0 * Flows up to about the 2-year are passed beneath the detention basin via storm drains. See also Surface Water Streamflow and Pool Level Data. Storage Volume Data Page 4 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Storage Volumes Station Number: 4802 Name: Dreamy Draw Dam Cap Period of Record: Nov. 1987 to current year Volume, in acre-feet, Water Year October 1995 to September 1996 No significant storage during Water Year 1996. OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------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 1996 MEAN 0 MAX 0 MIN 0 See also Surface Water Streamflow and Pool Level Data. Storage Volume Data Page 5 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Storage Volumes Station Number: 4802 Name: Dreamy Draw Dam Cap Period of Record: Nov. 1987 to current year Volume, in acre-feet, Water Year October 1994 to September 1995 -- REVISED Day Sept. 27 No significant storage during Water Year 1995 except on following day: Maximum Storage (ac-ft) (% full) 2 1 OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------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 2 MIN 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 1995 MEAN 0 MAX 2 MIN 0 Data revised to reflect raising of instrument datum of 1.28 feet. Capacity rating shifted -1.28 ft to compensate. See also Surface Water Streamflow and Pool Level Data. Storage Volume Data Page 6 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Storage Volumes Station Number: 4902 Name: Cave Buttes Dam Cap Period of Record: Nov. 1987 to current year Volume, in acre feet, Water Year October 1995 to September 1996 Day Nov. 2 Aug. 15 Sept. 7 Maximum impoundments of interest during Water Year 1996: Maximum Storage Maximum Storage (ac-ft) (% full) Day (ac-ft) (% full) 289 193 58 0.6 0.4 0.1 July 15 Sept. 2 115 45 0.2 0.1 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 10 2 195 5 3 2 4 5 6 7 10 8 9 10 11 12 13 14 1 14 15 36 57 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 --31 ---------------------------------------------------------------------------------------MEAN 0 7 0 0 0 0 0 0 0 1 2 1 MAX 0 289 0 0 0 0 0 0 0 115 193 58 MIN 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 1996 MEAN 1 MAX 289 MIN 0 See also Surface Water Streamflow and Pool Level Data. Storage Volume Data Page 7 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Storage Volumes Station Number: 5112 Name: Saddleback FRS Cap Period of Record: 12/16/88 to current year Volume, in acre feet, Water Year October 1995 to September 1996 Day July 15 No storage during Water Year 1996 except on following day: Maximum Storage (ac-ft) (% full) 102 1.5 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------15 20 -----------------------------------------------------------------------------MEAN 0 0 0 0 0 0 0 0 0 1 0 0 MAX 0 0 0 0 0 0 0 0 0 102 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 1996 MEAN 0 MAX 102 MIN 0 See also Surface Water Streamflow and Pool Level Data. Storage Volume Data Page 8 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Storage Volumes Station Number: 5127 Name: Harquahala FRS Cap Period of Record: 03/01/94 to current year Volume, in acre feet, Water Year October 1995 to September 1996 No significant storage during Water Year 1996. OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------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 1996 MEAN 0 MAX 0 MIN 0 See also Surface Water Streamflow and Pool Level Data. Storage Volume Data Page 9 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Storage Volumes Station Number: 5202 Name: Buckeye FRS #1 Cap Period of Record: Nov. 1987 to current year Volume, in acre feet, Water Year October 1995 to September 1996 Day July 15 No significant storage during Water Year 1996 except on following day: Maximum Storage (ac-ft) (% full) 45* 0.6 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------15 8 16 2 -----------------------------------------------------------------------------MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 0 0 0 0 0 0 0 0 45* 0 0 MIN 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 1996 MEAN 0 MAX 45* MIN 0 * Estimated from high water marks observed on morning of 07/15/1996. See also Surface Water Streamflow and Pool Level Data. Storage Volume Data Page 10 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Storage Volumes Station Number: 5207 Name: Buckeye FRS #2 Cap Period of Record: 11/11/92 to current year Volume, in acre feet, Water Year October 1995 to September 1996 No significant storage during Water Year 1996. OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------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 1 MIN 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 1996 MEAN 0 MAX 1 MIN 0 See also Surface Water Streamflow and Pool Level Data. Storage Volume Data Page 11 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Storage Volumes Station Number: 5232 Name: Sunset FRS Cap Period of Record: 02/12/89 to current year Volume, in acre feet, Water Year October 1995 to September 1996 Day July 28 Maximum impoundments of interest during Water Year 1996: Maximum Storage Maximum Storage (ac-ft) (% full) Day (ac-ft) (% full) 1 1.2 Sept. 11 11 12.8 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 9 12 9 13 9 14 9 15 9 16 6 17 3 18 3 19 3 20 3 21 3 22 3 23 3 24 1 25 26 27 28 1 29 30 --31 ---------------------------------------------------------------------------------------MEAN 0 0 0 0 0 0 0 0 0 0 0 2 MAX 0 0 0 0 0 0 0 0 0 1 0 11 MIN 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 1996 MEAN 0 MAX 11 MIN 0 See also Surface Water Streamflow and Pool Level Data. Storage Volume Data Page 12 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Storage Volumes Station Number: 5247 Name: Sunnycove FRS Cap Period of Record: Nov. 1987 to current year Volume, in acre feet, Water Year October 1995 to September 1996 Day Sept. 11 Maximum storage during Water Year 1996: Maximum Storage (ac-ft) (% full) 4 1.9 OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------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 4 MIN 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 1996 MEAN 0 MAX 4 MIN 0 See also Surface Water Streamflow and Pool Level Data. Storage Volume Data Page 13 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Storage Volumes Station Number: 5417 Name: White Tanks #3 Cap Period of Record: Nov. 1987 to current year Volume, in acre feet, Water Year October 1995 to September 1996 No impoundment above gage during Water Year 1996.* OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------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 1996 MEAN 0 MAX 0 MIN 0 * Significant storage volume exists below the instrument level due to the borrow pits behind the dam. The storage volume behind the dam at the instrument level is 74 acre-feet. See also Surface Water Streamflow and Pool Level Data. Storage Volume Data Page 14 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Storage Volumes Station Number: 5447 Name: McMicken Dam Cap Period of Record: Nov. 1987 to current year Volume, in acre feet, Water Year October 1995 to September 1996 No significant storage during Water Year 1996. OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------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 1996 MEAN 0 MAX 0 MIN 0 See also Surface Water Streamflow and Pool Level Data. Storage Volume Data Page 15 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Storage Volumes Station Number: 5537 Name: Adobe Dam Cap Period of Record: Nov. 1987 to current year Volume, in acre feet, Water Year October 1995 to September 1996 Day Nov.2 Sept. 6 Maximum impoundments of interest during Water Year 1996: Maximum Storage Maximum Storage (ac-ft) (% full) Day (ac-ft) (% full) 5 1 <0.1 <0.1 Aug. 15 6 <0.1 OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------MEAN 0 0 0 0 0 0 0 0 0 0 0 0 MAX 0 5 0 0 0 0 0 0 0 0 6 1 MIN 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 1996 MEAN 0 MAX 6 MIN 0 See also Surface Water Streamflow and Pool Level Data. Storage Volume Data Page 16 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Storage Volumes Station Number: 5612 Name: New River Dam Cap Period of Record: Nov. 1987 to current year Volume, in acre feet, Water Year October 1995 to September 1996 No significant storage during Water Year 1996. OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------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 1996 MEAN 0 MAX 0 MIN 0 See also Surface Water Streamflow and Pool Level Data. Storage Volume Data Page 17 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Storage Volumes Station Number: 6502 Name: Guadalupe FRS Cap Period of Record: 06/29/89 to current year Volume, in acre feet, Water Year October 1995 to September 1996 No significant storage during Water Year 1996. OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------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 1996 MEAN 0 MAX 0 MIN 0 See also Surface Water Streamflow and Pool Level Data. Storage Volume Data Page 18 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Storage Volumes Station Number: 6608 Name: Freestone Basin Period of Record: 12/19/1995 to current year Volume, in acre-feet, Water Year October 1995 to September 1996 Rainfall produced impoundments of interest during Water Year 1996: Maximum Storage Maximum Storage (ac-ft) (% full) Day (ac-ft) (% full) Day July 11 Sept. 2 1.1 3.1 0.5 1.5 Aug. 29 2.2 1.1 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 ------1 11 ------1 12 ------13 ------14 ------15 ------16 ------17 ------18 ------19 ----20 ----21 ----22 ----1 23 ----1 24 ----1 25 ----26 ----1 27 ----28 ----2 29 ----1 30 ------31 -----------------------------------------------------------------------------------------MEAN ----0 0 0 0 0 0 0 0 0 0 MAX ----0 0 0 0 0 0 2 2 2 3 MIN ----0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 1996 MEAN 0 MAX 3 MIN 0 Note: Gage installed and began operation on 12/19/1995. Also, many days of storage from irrigation tailwater. See also Pool Level Data. Storage Volume Data Page 19 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Storage Volumes Station Number: 6623 Name: Crossroads Park Period of Record: 12/18/1995 to current year Volume, in acre-feet, Water Year October 1995 to September 1996 No significant storage during Water Year 1996. OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------MEAN ----0 0 0 0 0 0 0 0 0 0 MAX ----0 0 0 0 0 0 0 0 0 0 MIN ----0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 1996 MEAN 0 MAX 0 MIN 0 Note: Gage installed and began operation on 12/18/1995. See also Pool Level Data. Storage Volume Data Page 20 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Storage Volumes Station Number: 6627 Name: Signal Butte FRS Cap Period of Record: 11/10/87 to current year Volume, in acre feet, Water Year October 1995 to September 1996 Maximum impoundments of interest during Water Year 1996: Maximum Storage Maximum Storage (ac-ft) (% full) Day (ac-ft) (% full) Day Aug. 23 Sept. 2 4 4 0.3 0.3 Aug. 28 11 0.8 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 1 3 2 1 1 1 3 3 1 1 3 4 1 1 3 5 3 6 3 7 3 8 2 9 2 10 2 11 2 12 2 13 2 14 2 15 2 16 2 17 2 18 1 19 1 20 21 22 1 23 3 24 3 25 3 26 1 2 27 3 28 10 29 8 30 --6 31 --------4 -------------------------------------------------------------------------------MEAN 0 0 0 0 0 0 0 0 0 0 1 1 MAX 2 1 0 0 2 0 0 0 0 1 11 4 MIN 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 1996 MEAN 0 MAX 11 MIN 0 Note: Storage on 10/1-4/1995 from recession of 9/28/1995 event. See also Surface Water Streamflow and Pool Level Data. Storage Volume Data Page 21 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Storage Volumes Station Number: 6672 Name: Apache Jct. FRS Cap Period of Record: Nov. 1987 to current year Volume, in acre feet, Water Year October 1995 to September 1996 No significant storage during Water Year 1996. OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------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 1996 MEAN 0 MAX 0 MIN 0 See also Surface Water Streamflow and Pool Level Data. Storage Volume Data Page 22 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Storage Volumes Station Number: 6682 Name: Powerline FRS Cap Period of Record: 12/03/92 to current year Volume, in acre feet, Water Year October 1995 to September 1996 No significant storage during Water Year 1996. OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------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 1996 MEAN 0 MAX 0 MIN 0 See also Surface Water Streamflow and Pool Level Data. Storage Volume Data Page 23 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Storage Volumes Station Number: 6687 Name: Vineyard FRS Cap Period of Record: Nov. 1987 to current year Volume, in acre feet, Water Year October 1995 to September 1996 Day Sept. 2 Maximum impoundments of interest during Water Year 1996: Maximum Storage Maximum Storage (ac-ft) (% full) Day (ac-ft) (% full) 169 5.4 Sept. 14 195 6.2 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 133 3 156 4 124 5 67 6 61 7 39 8 12 9 3 10 11 12 9 13 84 14 188 15 145 16 87 17 33 18 12 19 4 20 21 22 23 24 25 26 27 28 29 30 --31 ---------------------------------------------------------------------------------------MEAN 0 0 0 0 0 0 0 0 0 0 0 39 MAX 0 0 0 0 0 0 0 0 0 0 0 195 MIN 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 1996 MEAN 3 MAX 195 MIN 0 See also Surface Water Streamflow and Pool Level Data. Storage Volume Data Page 24 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Storage Volumes Station Number: 6702 Name: Rittenhouse FRS Cap Period of Record: 09/27/88 to current year Volume, in acre feet, Water Year October 1995 to September 1996 Day Sept. 2 Maximum impoundments of interest during Water Year 1996: Maximum Storage Maximum Storage (ac-ft) (% full) Day (ac-ft) (% full) 60 1.8 Sept. 11 150* 4.5 Daily Mean Values DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------1 2 26 3 4 5 6 7 8 9 10 11 23 12 17 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 2 MAX 0 0 0 0 0 0 0 0 0 0 0 150* MIN 0 0 0 0 0 0 0 0 0 0 0 0 -----------------------------------------------------------------------------WTR YR 1996 MEAN 0 MAX 150* MIN 0 * Maximum from high water marks surveyed on 9/13/96. See also Surface Water Streamflow and Pool Level Data. Storage Volume Data Page 25 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Storage Volumes Station Number: 6812 Name: Buckeye FRS #3 Cap Period of Record: 11/23/92 to current year Volume, in acre feet, Water Year October 1995 to September 1996 No significant storage during Water Year 1996. OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------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 1996 MEAN 0 MAX 0 MIN 0 See also Surface Water Streamflow and Pool Level Data. Storage Volume Data Page 26 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Storage Volumes Station Number: 6822 Name: White Tanks #4 Cap Period of Record: Nov. 1987 to current year Volume, in acre feet, Water Year October 1995 to September 1996 No impoundment above gage during Water Year 1996.* OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------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 1996 MEAN 0 MAX 0 MIN 0 * Significant storage volume exists below the instrument level due to the large borrow pits behind the dam. The storage volume behind the dam at the instrument level is 585 acre-feet. See also Surface Water Streamflow and Pool Level Data. Storage Volume Data Page 27 FCDMC Annual Surface Water Report Water Year 1996 Flood Control District Of Maricopa County ALERT System Computation Of Continuous Records Of Storage Volumes Station Number: 7132 Name: Casandro Dam Cap Period of Record: 08/15/1996 to current year Volume, in acre feet, Water Year October 1995 to September 1996 Maximum storage impounded during Water Year 1996: Maximum Storage (ac-ft) (% full) Day Sept. 11 15 10.5 OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP -----------------------------------------------------------------------------MEAN --------------------0 0 MAX --------------------0 15 MIN --------------------0 0 -----------------------------------------------------------------------------WTR YR 1996 MEAN 0 MAX 15 MIN 0 Note: Gage installed and began operation on 08/15/1996. See also Surface Water Streamflow and Pool Level Data. Storage Volume Data Page 28 FCDMC Annual Surface Water Report Water Year 1996 Comment/Errata Sheet Comments about this report or errors discovered may be forwarded to the Flood Warning and Data Collection Branch using this Comment/Errata sheet. Simply fold this sheet over in half so that the address labels are on the outside, tape closed, add a stamp and place in the mail. Comments: Errors (please include page numbers, gage names or IDs, and dates whenever possible): Appendix Comment/Errata Sheet FCDMC Annual Surface Water Report Water Year 1996 Comment/Errata Sheet Flood Control District of Maricopa County Flood Warning and Data Collection Branch 2801 W. Durango Street Phoenix, Arizona 85009 Place Stamp Here Flood Control District of Maricopa County Flood Warning and Data Collection Branch 2801 W. Durango Street Phoenix, Arizona 85009 Appendix Comment/Errata Sheet FCDMC Annual Surface Water Report Water Year 1996