ANNUAL HYDROLOGIC
DATA REPORT
VOLUME II
SURFACE WATER DATA
WATER YEAR 1999

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 Water Quality 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 are
maximum discharges, pool levels, and storage volumes for flood events of interest at
each site. In addition, a few hydrographs from significant floods are also presented.
Furthermore, flood flow frequency tables are included 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.fcd.maricopa.gov/alert/alert.htm.

ii

TABLE OF CONTENTS
Preface.................................................................................................................. ii
Contents............................................................................................................... iii
Introduction .......................................................................................................... iv
Definition of Terms .............................................................................................. vii
Surface Water Gage Location Map ...................................................................... xi
List of New Gage Locations in Water Year 1999 ................................................ xii
List of Stations Sorted By Sensor ID# ................................................................ xiii
List of Stations Sorted By Name ........................................................................ xvi
Summary of Significant Streamflow Events........................................................ xix
Surface Water Streamflow and Storage Facility Discharge Data ................. Tab 1
Pool Levels at Storage Facilities (Resevoir Depths) .................................... Tab 2
Storage Volumes at Storage Facilities .......................................................... Tab 3
Comment/Errata Sheet ............................................................................Appendix

iii

INTRODUCTION
The Flood Control District of Maricopa County in cooperation with federal, state,
and local 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
"Annual Hydrologic Data Report, Volume II -- Surface Water Data."
This report includes records on discharge at 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) Streamflow
records at 58 stream gages and 34 flood control storage structures; (2) Pool
levels of stored water at 36 flood control storage structures; and (3) Storage
volumes at 35 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.
Several streamflow gages are operated cooperatively between the FCDMC and
the United States Geological Survey (USGS). Although real-time data for these
sites are collected by the FCDMC ALERT System 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
1999 were:
USGS Gage Name

FCDMC ID

USGS ID

0778
4523
4923
5503
5568
6853
5223
5103

09479350
09512165
09512280
09513650
09513860
09514100
09516500
09517490

Gila River near Maricopa, AZ
Salt River at Priest Drive
Cave Cr. below Cottonwood Cr.
Agua Fria River at El Mirage
Skunk Creek near Phoenix, AZ
Gila River @ Estrella Parkway
Hassayampa River nr Morristown
Centennial Wash at SPRR

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.

iv

The cooperative crest stage gage sites for Water Year 1999 were:
Gage Site Name

USGS ID

Vekol Wash near Stanfield, AZ
Tortilla Creek at Tortilla Flat
Camp Creek near Sunflower
Rock Creek near Sunflower
Indian Bend Wash at Shea Blvd
Salt River Trib in South Mountain Park
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 Tonopah
Centennial Wash Trib. nr Wenden
Tiger Wash near Aguila
Winters Wash near Tonopah
Rainbow Wash Trib. near Buckeye
Bender Wash near Gila Bend
Sauceda Wash near Gila Bend
Military Wash near Sentinel
Crater Range Wash near Ajo

09488650
09501300
09510170
09510180
09512090
09512200
09512700
09513820
09514200
09515800
09516600
09516800
09517200
09517280
09517400
09519600
09519750
09519760
09520100
09520230

There are two sensors located on Corps of Engineer structures. Tat Momolikot
and Whitlow Ranch Dams are monitored by the Corps of Engineers. Again,
these data are collected in real-time by the FCDMC for the purpose of flood
monitoring. Please refer to the Los Angeles District office for official data for
these sites.
This is the sixth 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 and/or indirect measurements made at or near the gage site. For flood

v

control storage structues, discharge ratings were obtained in one of two ways.
First, the design ratings may be used. In most cases however, the discharge
rating curves were developed by application of the Federal Highway
Administration’s HY-8 computer model for culvert flow and U.S. Geological
Survey methods for weir flow over the uncontrolled emergency spillways. The
storage rating curves were obtained from published as-built or construction plans
or developed from digital elevation data.
Daily mean discharges are computed by applying the daily mean stages (gage
heights) to the stage-discharge curves or tables. 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 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 feet 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. In the
event that published records require revision, revisions are printed in later
reports. Listed in the heading for each gage where records have been revised
are all the reports in which revisions have been published for the station and the
water years to which the revisions apply (e.g. WY1999: WY1994-95 means that
the data for Water Years 1994-1995 were revised in the report for Water Year
1999).
Comments about this report or errors discovered may be forwarded to the Flood
Warning and Water Quality 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
deg@mail.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.

vi

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
stage-discharge 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 acre-feet, 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.

vii

El Niño is a condition where sea surface temperatures are warmer in the eastern
Pacific Ocean and cooler in the western Pacific Ocean in the lower latitudes.
Normal conditions of sea surface temperatures are opposite with warmer waters
in the western Pacific and cooler waters in the eastern Pacific. El Niño conditions
usually results in a higher than normal precipitation in the southwestern United
States.
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 elevation
of impoundment associated with a given recurrence interval at a particular flood
control impoundment structure.
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 a known 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 river, stream, canal, lake, or reservoir
where systematic observations of hydrologic data are obtained.
Instantaneous discharge is the discharge at a particular instant of time.
La Niña is when above normal sea surface temperatures exist in the western
Pacific Ocean and cooler than normal sea surface temperatures exist in the
eastern Pacific Ocean. La Niña conditions usually result in drier than normal
conditions in the southwestern United States.
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.

viii

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.
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

ix

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, 1999, is called the "1999 Water Year."

x

Flood Control District of Maricopa County
ALERT Stage Gauges

#
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535 3

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492 3 493 4
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501 3

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516 3

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Legend
Telemetry Stage

Precipitation

Precip/Temp/Humidity/Dew Point

Weather

xi

788

$#

#

#

New Installations in Water Year 1999
Several new streamgages were installed and one gage was removed during Water Year
1999. The table below lists the new gages installed during the Water Year.

ID #
4643
4863
5013
5163
6723
6833
6848

Gage Name
IBW at Sweetwater
Rawhide Wash
Columbus Wash
Tiger Wash
Queen Creek at CAP
Waterman at Rainbow
Gila River at 116th Ave.

Installed
11/18/98
07/27/99
09/22/99
09/15/99
1/14/99
3/22/99
12/16/98

T-R-S
3N-3E-13
5N-4E-36
4S-10W-6
5N-10W-26
2S-8E-26
2S-2W-14
1N-1W-36

Latitude Longitude Elev. Page #s
33 36 15 112 00 18 1400 1:15, 16
33 44 27 111 53 55 2205 1:36
33 06 27 113 19 57 685 1:40
33 45 30 113 16 43 1960 1:45
33 12 22 111 30 15 1565 1:95
33 15 40 112 26 38 1085 1:99,100
33 23 24 112 18 28 940 1:101

Three gages that appeared in previous reports are not in the 1999 report or only include
a partial record. All three gages have been permanently removed.
4938
5153
6863

Reatta Pass Dam (removed during Water Year 1999)
Narrows Dam (removed during Water Year 1998)
Gila River at 115th Avenue (moved to new bridge, gage # 6848)

NOTE: At gage 4643, IBW at Sweetwater, a new gage was installed on the 36th Street bridge
over Indian Bend Wash on November 18, 1998. The gage was formerly on the Sweetwater
Avenue bridge, approximately 500 feet upstream from the new location.

xii

Flood Control District of Maricopa County
ALERT System Water Level Sensors WY 1999 -- Sorted by Sensor ID
ID #
769
778
783
788
793
798
4523
4563
4603
4613
4618
4623
4628
4638
4643
4648
4653
4658
4668
4678
4683
4688
4693
4748
4803
4808
4813
4818
4823
4833
4863
4903
4904
4918
4923
5013
5093
5103
5113
5128
5163
5203
5208
5223
5228

Gage Name
Tat Momolikot Dam
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 nr McKellips Rd.
IBW @ Indian Bend Rd.
IBW @ Indian School Rd
IBW @ Interceptor
IBW @ McDonald
Tatum Wash Basin Inflow
IBW @ Sweetwater
East Fork CC #1
Tatum Wash Basin
East Fork CC #4
EFCC nr 7th Ave.
Lake Marguerite
East Fork CC #3
Berneil Wash
IBW @ Shea
Old X-cut @ McDowell
Dreamy Draw Dam
ACDC @ 36th St.
ACDC @ 14th St.
10th Street Wash Basin #1
ACDC @ 43rd Ave.
Cave Creek @ Cactus
Rawhide Wash
Cave Buttes Outlet
Cave Buttes Pool
Cave Cr. nr Cave Cr.
Cave Cr.@ Spur Cross
Columbus Wash
Centennial @ Wenden
Centennial Railroad
Saddleback FRS
Harquahala FRS
Tiger Wash
Buckeye FRS #1
Buckeye FRS #2
Hassy R. nr Morristown
Hassy R. @ US 60

Installed
1/21/98
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
11/25/97
4/21/94
11/24/97
5/6/98
12/27/90
3/2/94
5/8/98
1/18/94
5/21/97
11/25/97
9/13/94
7/30/98
6/9/98
7/27/94
1/24/84
2/24/94
2/9/94
11/26/96
11/14/90
6/27/91
7/26/99
1/25/84
1/25/84
5/27/94
6/16/93
9/22/99
9/16/98
2/9/90
12/16/88
3/1/94
9/15/99
7/26/83
11/11/92
5/7/96
3/14/94

T-R-S
9S-4E-30
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-23
2N-4E-12
2N-4E-11
3N-4E-30
3N-3E-13
4N-3E-23
3N-4E-30
4N-3E-25
3N-3E-5
3N-4E-36
4N-3E-34
3N-4E-34
3N-4E-29
1N-4E-06
3N-3E-34
2N-3E-13
2N-3E-4
3N-3E-28
3N-2E-22
3N-2E-13
5N-4E-36
4N-3E-15
4N-3E-15
5N-3E-12
6N-4E-04
4S-10W-06
6N-12W-32
1S-6W-28
2N-10W-34
2N-8W-05
5N-10W-26
1N-5W-3
1N-3W-07
6N-4W-03
7N-5W-12

xiii

Latitude Longitude Elev. Page #s
32 30 46 111 57 06 1540 1:1; 2:1; 3:1
33 10 19 112 00 20 1120 1:2
33 05 15 111 41 11 1290 1:3
32 52 47 111 49 43 1311 1:4
32 52 48 111 56 01 1350 1:5
32 52 49 111 56 46 1305 1:6
33 26 00 111 57 43 1133 1:7
33 28 01 111 40 48 1595 1:8; 2:2; 3:2
33 26 58 111 54 58 1187 1:9
33 32 01 111 54 48 1280 1:10
33 29 42 111 54 38 1235 1:11
33 32 00 111 53 55 1280 1:12
33 31 26 111 54 33 1262 1:13
33 34 54 111 59 01 1397 1:14
33 36 15 112 00 18 1400 1:15,16
33 40 11 112 01 29 1515 1:17; 2:3; 3:3
33 34 57 111 58 58 1394 1:18; 2:4, 3:4
33 38 55 112 00 35 1456 1:19; 2:5; 3:5
33 37 40 112 04 49 1325 1:20, 21
33 33 49 111 53 56 1325 1:22
33 38 45 112 02 19 1456 1:23; 2:6; 3:6
33 34 01 111 56 17 1320 1:24
33 34 55 111 58 03 1350 1:25, 26
33 27 56 111 58 48 1250 1:27
33 33 45 112 01 54 1407 1:28; 2:7; 3:7
33 30 49 111 59 56 1260 1:29
33 32 31 112 02 35 1230 1:30
33 34 47 112 03 14 1150 1:31; 2:8, 3:8
33 35 03 112 09 16 1225 1:32, 33
33 35 59 112 06 39 1280 1:34, 35
33 44 27 111 53 55 2205 1:36
33 42 58 112 02 43 1649 1:37
33 42 58 112 02 43 1649 2:9; 3:9
33 47 28 112 00 05 1800 1:38
33 53 05 111 57 17 2280 1:39
33 06 27 113 19 57 685 1:40
33 49 30 113 31 55 1860 1:41
33 18 35 112 52 56 850 1:42
33 27 55 113 04 21 1177 1:43; 2:11; 3:10
33 32 56 113 05 47 1420 1:44; 2:12; 3:11
33 45 30 113 16 43 1960 1:45
33 27 31 112 45 02 1097 1:46; 2:13; 3:12
33 26 26 112 35 47 1150 1:47; 2:14; 3:13
33 53 05 112 39 42 1830 1:48
33 58 13 112 43 31 2035 1:49, 50

Flood Control District of Maricopa County
ALERT System Water Level Sensors WY 1999 -- Sorted by Sensor ID
ID #
5233
5248
5283
5308
5353
5403
5408
5413
5418
5423
5438
5448
5503
5508
5523
5538
5539
5543
5568
5583
5598
5613
5614
5968
5973
5978
5983
5988
5993
6503
6563
6573
6583
6598
6603
6608
6623
6628
6673
6683
6688
6703
6707
6723
6739
6813

Gage Name
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
Dysart Chnl @ El Mirage
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
Stoneridge Dam
Sunridge Canyon Dam
Golden Eagle Park Dam
North Heights Dam
Aspen Dam
Hesperus Dam
Guadalupe FRS
South Mountain Fan
EMF @ Broadway
EMF @ Queen Creek Rd.
EMF @ Arizona Ave.
Guadalupe Channel
Freestone Park Basin
Crossroads Park Basin
Signal Butte FRS
Apache Junction FRS
Powerline FRS
Vineyard FRS
Rittenhouse FRS
Queen Ck @ Rittenhouse
Queen Creek at CAP
Whitlow Ranch Dam
Buckeye FRS #3

Installed
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
3/7/97
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
12/11/96
2/4/97
12/12/96
10/11/96
1/2/97
12/18/96
6/29/89
6/9/93
8/10/89
1/18/89
2/10/89
8/07/98
12/19/95
12/18/95
11/10/87
12/16/81
12/3/92
11/2/83
9/27/88
9/14/93
1/14/99
1/8/98
11/23/92

T-R-S
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
2N-1W-1
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
3N-6E-22
3N-6E-16
3N-6E-10
3N-6E-9
3N-6E-4
3N-6E-4
1S-4E-5
1S-2E-26
1N-6E-26
2S-6E-15
3S-5E-15
1S-7E-6
1S-6E-8
1S-6E-21
1N-7E-12
1N-8E-8
1S-8E-9
1S-8E-9
2S-8E-2
2S-7E-25
2S-8E-26
1S-10E-36
1N-3W-10

xiv

Latitude Longitude Elev. Page #s
33 57 50 112 44 33 2100 1:51; 2:15; 3:14
33 57 25 112 44 24 2200 1:52; 2:16; 3:15
33 27 27 112 45 43 1035 1:53
34 02 41 112 42 32 2245 1:54, 55
34 18 38 112 34 05 3785 1:56
33 26 05 112 19 55 940 1:57
33 30 28 112 19 24 1025 1:58
33 32 38 112 20 59 1090 1:59
33 32 01 112 28 14 1190 1:60; 2:17; 3:16
33 32 36 112 19 24 1023 1:61
33 41 04 112 24 24 1337 1:62
33 40 38 112 25 23 1361 1:63; 2:18; 3:17
33 36 26 112 18 16 1125 1:64
33 32 14 112 17 00 1050 1:65, 66
33 37 26 112 12 10 1220 1:67, 68
33 40 37 112 09 12 1413 1:69
33 40 37 112 09 12 1413 2:19; 3:18
33 40 09 112 08 25 1340 1:70
33 43 47 112 07 21 1475 1:71
33 55 34 112 04 56 1854 1:72, 73
33 38 18 112 14 27 1200 1:74
33 44 09 112 13 31 1498 1:75
33 44 09 112 13 31 1498 2:20; 3:19
33 35 41 111 43 57 1710 1:76; 2:21; 3:20
33 36 23 111 45 01 1932 1:77; 2:22; 3:21
33 37 08 111 44 04 1722 1:78; 2:23: 3:22
33 37 17 111 44 52 1819 1:79; 2:24; 3:23
33 37 34 111 44 41 1840 1:80; 2:25; 3:24
33 38 11 111 44 44 1894 1:81; 2:26; 3:25
33 22 16 111 58 10 1250 1:82; 2:27; 3:26
33 18 56 112 07 59 1420 1:83, 84
33 24 21 111 42 42 1349 1:85
33 15 50 111 43 35 1317 1:86
33 09 57 111 49 56 1214 1:87
33 21 55 111 40 32 1345 1:88
33 21 28 111 46 19 1450 2:28; 3:27
33 19 39 111 44 40 1270 2:29; 3:28
33 26 25 111 35 25 1650 1:89; 2:30; 3:29
33 26 28 111 33 07 1989 1:90; 2:31; 3:30
33 21 22 111 32 14 1580 1:91; 2:32; 3:31
33 21 10 111 32 06 1582 1:92; 2:33; 3:32
33 17 22 111 29 49 1580 1:93; 2:34; 3:33
33 13 50 111 35 41 1400 1:94
33 12 22 111 30 15 1565 1:95
33 17 55 111 16 35 2199 1:96; 2:35; 3:34
33 26 49 112 33 20 1200 1:97; 2:36; 3:35

Flood Control District of Maricopa County
ALERT System Water Level Sensors WY 1999 -- Sorted by Sensor ID
ID #
6823
6833
6848
6853
6893
6923
6983
7013
7043
7063
7083
7093
7113
7133

Gage Name
White Tanks 4
Waterman at Rainbow
Gila @ 116th Ave.
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

Installed
1/9/86
3/18/99
12/16/98
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

T-R-S
1N-2W-5
2S-2W-14
1N-1W-36
1N-1W-31
2S-1W-12
6S-5W-4
7S-1E-3
8N-5W-17
8N-5W-32
7N-5W-12
7N-5W-09
7N-5W-10
7N-4W-06
7N-5W-11

xv

Latitude Longitude Elev. Page #s
33 27 04 112 29 40 1044 1:98; 2:37; 3:36
33 15 40 112 26 38 1085 1:99,100
33 23 24 112 18 28 940 1:101
33 23 19 112 23 33 900 1:102
33 16 02 112 18 53 1425 1:103
32 52 27 112 44 57 726 1:104
32 50 30 112 14 58 1720 1:105, 106
34 01 44 112 47 30 2300 1:107
33 59 14 112 47 33 2220 1:108
33 57 45 112 49 42 2488 1:109
33 57 44 112 46 55 2302 1:110, 111
33 57 44 112 45 55 2240 1:112
33 58 50 112 42 59 2120 1:113
33 57 57 112 45 01 2163 1:114; 2:38; 3:37

Flood Control District of Maricopa County
ALERT System Water Level Sensors WY 1999 – Sorted by Name
ID #
4818
4813
4808
4823
5523
5538
5539
5403
5503
6673
5988
4688
5203
5208
6813
7133
7093
4903
4904
4918
4923
4833
5093
5103
5408
5013
6623
4803
5423
5413
4648
4683
4658
4668
6598
6573
6583
6893
7083
6608
6848
6853
778
783
5978

Gage Name
10th Street Wash Basin #1
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
Aspen Dam
Berneil Wash
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 @ Wenden
Centennial Railroad
Colter @ El Mirage
Columbus Wash
Crossroads Park Basin
Dreamy Draw Dam
Dysart Chnl @ El Mirage
Dysart Drain @ LAFB
East Fork CC #1
East Fork CC #3
East Fork CC #4
EFCC nr 7th Ave.
EMF @ Arizona Ave.
EMF @ Broadway
EMF @ Queen Creek Rd.
Estrella Fan
Flying E Wash
Freestone Park Basin
Gila @ 116th Ave.
Gila @ Estrella Pkwy.
Gila @ Maricopa Rd
Gila R. @ Olberg
Golden Eagle Park Dam

Installed
11/26/96
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
1/2/97
7/30/98
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
9/16/98
2/9/90
6/29/94
9/22/99
12/18/95
1/24/84
3/7/97
8/22/96
3/2/94
9/13/94
1/18/94
5/21/97
2/10/89
8/10/89
1/18/89
4/30/93
7/12/94
12/19/95
12/16/98
12/2/92
4/9/95
4/12/95
12/12/96

T-R-S
3N-3E-28
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
3N-6E-4
3N-4E-34
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
6N-12W-32
1S-6W-28
2N-1W-13
4S-10W-06
1S-6E-21
3N-3E-34
2N-1W-1
2N-1W-03
4N-3E-23
4N-3E-34
4N-3E-25
3N-3E-5
3S-5E-15
1N-6E-26
2S-6E-15
2S-1W-12
7N-5W-09
1S-6E-8
1N-1W-36
1N-1W-31
3S-3E-13
4S-6E-12
3N-6E-10

xvi

Latitude Longitude Elev. Page #s
33 34 47 112 03 14 1150 1:31; 2:8, 3:8
33 32 31 112 02 35 1230 1:30
33 30 49 111 59 56 1260 1:29
33 35 03 112 09 16 1225 1:32, 33
33 37 26 112 12 10 1220 1:67, 68
33 40 37 112 09 12 1413 1:69
33 40 37 112 09 12 1413 2:19; 3:18
33 26 05 112 19 55 940 1:57
33 36 26 112 18 16 1125 1:64
33 26 28 111 33 07 1989 1:90; 2:31; 3:30
33 37 34 111 44 41 1840 1:80; 2:25; 3:24
33 34 01 111 56 17 1320 1:24
33 27 31 112 45 02 1097 1:46; 2:13; 3:12
33 26 26 112 35 47 1150 1:47; 2:14; 3:13
33 26 49 112 33 20 1200 1:97; 2:36; 3:35
33 57 57 112 45 01 2163 1:114; 2:38; 3:37
33 57 44 112 45 55 2240 1:112
33 42 58 112 02 43 1649 1:37
33 42 58 112 02 43 1649 2:9; 3:9
33 47 28 112 00 05 1800 1:38
33 53 05 111 57 17 2280 1:39
33 35 59 112 06 39 1280 1:34, 35
33 49 30 113 31 55 1860 1:41
33 18 35 112 52 56 850 1:42
33 30 28 112 19 24 1025 1:58
33 06 27 113 19 57 685 1:40
33 19 39 111 44 40 1270 2:29; 3:28
33 33 45 112 01 54 1407 1:28; 2:7; 3:7
33 32 36 112 19 24 1023 1:61
33 32 38 112 20 59 1090 1:59
33 40 11 112 01 29 1515 1:17; 2:3; 3:3
33 38 45 112 02 19 1456 1:23; 2:6; 3:6
33 38 55 112 00 35 1456 1:19; 2:5; 3:5
33 37 40 112 04 49 1325 1:20, 21
33 09 57 111 49 56 1214 1:87
33 24 21 111 42 42 1349 1:85
33 15 50 111 43 35 1317 1:86
33 16 02 112 18 53 1425 1:103
33 57 44 112 46 55 2302 1:110, 111
33 21 28 111 46 19 1450 2:28; 3:27
33 23 24 112 18 28 940 1:101
33 23 19 112 23 33 900 1:102
33 10 19 112 00 20 1120 1:2
33 05 15 111 41 11 1290 1:3
33 37 08 111 44 04 1722 1:78; 2:23: 3:22

Flood Control District of Maricopa County
ALERT System Water Level Sensors WY 1999 – Sorted by Name
ID #
793
6603
6503
5128
7063
5308
5283
5228
5353
5223
5993
4613
4618
4623
4628
4693
4643
4603
4678
7013
5448
5438
5598
5508
5613
5614
5983
4748
7113
6683
6707
6723
4863
6703
5113
4523
788
798
6923
5543
6628
5583
5568
7043
6563

Gage Name
Greene Wash @ SR 84
Guadalupe Channel
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
Hesperus Dam
IBW @ Indian Bend Rd.
IBW @ Indian School Rd
IBW @ Interceptor
IBW @ McDonald
IBW @ Shea
IBW @ Sweetwater
IBW nr McKellips Rd.
Lake Marguerite
Martinez Creek
McMicken Dam
McMicken Floodway
New River @ Bell Rd.
New River @ Glendale
New River Outlet
New River Pool
North Heights Dam
Old X-cut @ McDowell
Powder House Wash
Powerline FRS
Queen Ck @ Rittenhouse
Queen Creek at CAP
Rawhide Wash
Rittenhouse FRS
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

Installed
3/23/94
8/07/98
6/29/89
3/1/94
7/6/94
11/17/83
11/9/94
3/14/94
9/26/91
5/7/96
12/18/96
9/28/83
11/25/97
4/21/94
11/24/97
6/9/98
12/27/90
5/21/85
11/25/97
11/23/94
3/24/83
9/3/92
4/4/90
3/21/90
4/15/86
4/15/86
10/11/96
7/27/94
5/18/95
12/3/92
9/14/93
1/14/99
7/26/99
9/27/88
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

T-R-S
7S-4E-21
1S-7E-6
1S-4E-5
2N-8W-05
7N-5W-12
8N-4W-7
1N-5W-03
7N-5W-12
11N-3W-9
6N-4W-03
3N-6E-4
2N-4E-11
2N-4E-23
2N-4E-12
2N-4E-11
3N-4E-29
3N-3E-13
1N-4E-11
3N-4E-36
8N-5W-17
4N-2W-24
4N-1E-18
3N-1E-3
3N-1E-8
5N-1E-35
5N-1E-35
3N-6E-9
1N-4E-06
7N-4W-06
1S-8E-9
2S-7E-25
2S-8E-26
5N-4E-36
2S-8E-2
2N-10W-34
1N-4E-17
7S-5E-21
7S-4E-20
6S-5W-4
4N-2E-27
1N-7E-12
7N-3E-29
5N-2E-35
8N-5W-32
1S-2E-26

xvii

Latitude Longitude Elev. Page #s
32 52 48 111 56 01 1350 1:5
33 21 55 111 40 32 1345 1:88
33 22 16 111 58 10 1250 1:82; 2:27; 3:26
33 32 56 113 05 47 1420 1:44; 2:12; 3:11
33 57 45 112 49 42 2488 1:109
34 02 41 112 42 32 2245 1:54, 55
33 27 27 112 45 43 1035 1:53
33 58 13 112 43 31 2035 1:49, 50
34 18 38 112 34 05 3785 1:56
33 53 05 112 39 42 1830 1:48
33 38 11 111 44 44 1894 1:81; 2:26; 3:25
33 32 01 111 54 48 1280 1:10
33 29 42 111 54 38 1235 1:11
33 32 00 111 53 55 1280 1:12
33 31 26 111 54 33 1262 1:13
33 34 55 111 58 03 1350 1:25, 26
33 36 15 112 00 18 1400 1:15,16
33 26 58 111 54 58 1187 1:9
33 33 49 111 53 56 1325 1:22
34 01 44 112 47 30 2300 1:107
33 40 38 112 25 23 1361 1:63; 2:18; 3:17
33 41 04 112 24 24 1337 1:62
33 38 18 112 14 27 1200 1:74
33 32 14 112 17 00 1050 1:65, 66
33 44 09 112 13 31 1498 1:75
33 44 09 112 13 31 1498 2:20; 3:19
33 37 17 111 44 52 1819 1:79; 2:24; 3:23
33 27 56 111 58 48 1250 1:27
33 58 50 112 42 59 2120 1:113
33 21 22 111 32 14 1580 1:91; 2:32; 3:31
33 13 50 111 35 41 1400 1:94
33 12 22 111 30 15 1565 1:95
33 44 27 111 53 55 2205 1:36
33 17 22 111 29 49 1580 1:93; 2:34; 3:33
33 27 55 113 04 21 1177 1:43; 2:11; 3:10
33 26 00 111 57 43 1133 1:7
32 52 47 111 49 43 1311 1:4
32 52 49 111 56 46 1305 1:6
32 52 27 112 44 57 726 1:104
33 40 09 112 08 25 1340 1:70
33 26 25 111 35 25 1650 1:89; 2:30; 3:29
33 55 34 112 04 56 1854 1:72, 73
33 43 47 112 07 21 1475 1:71
33 59 14 112 47 33 2220 1:108
33 18 56 112 07 59 1420 1:83, 84

Flood Control District of Maricopa County
ALERT System Water Level Sensors WY 1999 – Sorted by Name
ID #
4563
5968
5248
5973
5233
769
4653
4638
5163
6983
6688
6833
5418
6823
6739

Gage Name
Spookhill FRS
Stoneridge Dam
Sunnycove FRS
Sunridge Canyon Dam
Sunset FRS
Tat Momolikot Dam
Tatum Wash Basin
Tatum Wash Basin Inflow
Tiger Wash
Vekol Wash
Vineyard FRS
Waterman at Rainbow
White Tanks 3
White Tanks 4
Whitlow Ranch Dam

Installed
3/13/84
12/11/96
7/31/86
2/4/97
2/12/89
1/21/98
5/8/98
5/6/98
9/15/99
3/7/90
11/2/83
3/18/99
3/12/86
1/9/86
1/8/98

T-R-S
2N-7E-31
3N-6E-22
7N-5W-11
3N-6E-16
7N-5W-11
9S-4E-30
3N-4E-30
3N-4E-30
5N-10W-26
7S-1E-3
1S-8E-9
2S-2W-14
2N-2W-9
1N-2W-5
1S-10E-36

xviii

Latitude Longitude Elev. Page #s
33 28 01 111 40 48 1595 1:8; 2:2; 3:2
33 35 41 111 43 57 1710 1:76; 2:21; 3:20
33 57 25 112 44 24 2200 1:52; 2:16; 3:15
33 36 23 111 45 01 1932 1:77; 2:22; 3:21
33 57 50 112 44 33 2100 1:51; 2:15; 3:14
32 30 46 111 57 06 1540 1:1; 2:1; 3:1
33 34 57 111 58 58 1394 1:18; 2:4, 3:4
33 34 54 111 59 01 1397 1:14
33 45 30 113 16 43 1960 1:45
32 50 30 112 14 58 1720 1:105, 106
33 21 10 111 32 06 1582 1:92; 2:33; 3:32
33 15 40 112 26 38 1085 1:99,100
33 32 01 112 28 14 1190 1:60; 2:17; 3:16
33 27 04 112 29 40 1044 1:98; 2:37; 3:36
33 17 55 111 16 35 2199 1:96; 2:35; 3:34

SUMMARY OF SIGNIFICANT STREAMFLOW EVENTS
Water Year 1999 began quietly with few storm events during the winter period, but
picked up during the summer monsoon season.
The winter season was heavily influenced by the effects of a strong La Niña. With the
exception of events in late October (25th and 30th) and early April, the winter season
was quiet. There were a few small events in November, December, February, and
March. However, none produced any significant streamflow or impoundment.
The summer monsoon proved to be quite active. Monsoon season started early,
officially June 25 according to the National Weather Service office in Phoenix. The first
storms occurred July 6, 7, and 8. South Mountain was especially hard hit on July 7. The
gage at South Mountain Fan site (#6563) had the highest recorded streamflow to date.
Many gage sites throughout the valley recorded small flows and/or impoundments
during this first round of storms. A major weather disturbance occurred July 14th and
15th that brought heavy rain, and in many cases, significant runoff and impoundment.
Several other notable localized events occurred during the summer. On July 25,
significant rainfall hit the Hassayampa River watersheds above Wickenburg. Martinez
Creek (#7013) had it’s highest recorded streamflow. On August 27, a very concentrated
event occurred in west-central Phoenix causing severe localized flooding. The Papago
drain along I-10 discharged a significant flow into the Agua Fria River which was
recorded by the gage at Buckeye Road (#5403.) On August 31, a storm moved into the
Wickenburg area and caused several high (for the year) impoundments at Sunset Dam
(#5232, 5233), Sunnycove Dam (#5247, 5248), and Casandro Dam (#7132, 7133.) The
Hassayampa River had its peak for the Water Year during this event at several gaging
stations, (see #5308, and #5228.)
The significant flows and/or impoundments recorded by the FCDMC for Water Year
1999 are summarized in the following table.

xix

Maximum Flows and Impoundments for Water Year 1999 at Selected FCDMC Water Level Sensor Locations
Location
ACDC @ 43rd Ave
ACDC @ 67th Ave
Adobe Dam
Agua Fria at Buckeye Road
Berneil Wash
Casandro Dam
Cave Buttes Dam
East Fork Cave Creek near 7th Avenue
Flying E Wash
Hassayampa River at Box Canyon
Hassayampa River at US 60
Indian Bend Wash at Indian School Road
Indian Bend Wash at Shea Boulevard
Martinez Creek
New River at Glendale Ave.
Skunk Creek near New River
Sols Wash near Matthie
South Mountain Fan
Vekol Wash
Waterman at Rainbow Valley Road

xx

Discharge
(cfs)
1,395
650
508
1,477
447
15
199
847
444
5,650
3,360
658
1,247
8,569
1,525
949
528
749
925
1,320

Stage
(feet)
1.95
4.00
4.50
1.42
1.73
6.47
16.95
4.45
2.38
9.20
0.88
3.28
2.50
5.70
1.55
3.95
0.80
2.75
4.28
7.69

Contents
(ac-ft)
----134
----10.3
482
---------------------------

Date
(%full)
----0.7
----7.2
1.0
---------------------------

7/7/1999
7/14/1999
7/15/1999
8/27/1999
7/14/1999
8/31/1999
7/15/1999
7/14/1999
7/15/1999
8/31/1999
8/31/1999
7/14/1999
9/19/1999
7/25/1999
7/15/1999
7/15/1999
7/18/1999
7/7/1999
9/23/1999
8/31/1999

DATA PRESENTATION
The following three section present the data collected by the Flood Control District ALERT
system. The data is broken into three parts. The first part is Surface Water Streamflow
data. This section contains data from free-flowing stream sites and discharges from dams
and detention basins. The second section contains Pool Level data from storage
structures, both dams and basins. Recorded levels are highlighted in bold italic typeface,
so as to allow the data to be more easily identified. The third section presents Storage
Volume data for both dams and basins. The data are in acre-feet of storage volume.
In the tables where there are dashes - - - for a particular date or dates, the gage was
down. Typically a gage is down when the gage itself fails, or a transmitter or repeater fails.
In the case of transmitter failure or repeater failure, data for that date is available by
manual download. However, when no event has occurred, the data will typically not be
retrieved from the device.

xxi

SURFACE WATER
STREAMFLOW
DATA

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
768
Tat Momolikot Dam
2
Drainage Area:
1,780 mi
Period of Record: January 21, 1998 – current year
Discharge, in cfs, Water Year October 1998 to September 1999
Refer to the U.S. Army Corps of Engineers, Los Angeles District for official data at this site.

Surface Water Streamflow Data
Page 1

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
778
Gila @ Maricopa Rd
2
Drainage Area:
19, 915 mi
Period of Record: FCDMC October 1, 1998 – current year
USGS: Gage number 09479350
Discharge, in cfs, Water Year October 1998 to September 1999
Day
Jul. 7

Peak flows of interest during Water Year 1999
Peak Discharge (cfs)
27

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
2
3
4
5
6
7
5
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
-----------------------------------------------------------------------------TOTAL
0
0
0
0
0
0
0
0
0
5
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
27
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
11
0
0
-----------------------------------------------------------------------------WTR YR 1999 TOTAL
5 MEAN
0 MAX
27 MIN
0 AC_FT
11
NOTE: USGS maintains a gage at this site in cooperation with ADOT. See USGS gage# 09479350.
Surface Water Streamflow Data
Page 2

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
783
Gila @ Olberg
2
Drainage Area:
18,674 mi
Period of Record: October 1, 1998 – current year*
Discharge, in cfs, Water Year October 1998 to September 1999
Day
Jul. 23

Peak flow of interest during Water Year 1999
Peak Discharge (cfs)
678

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
2
3
4
5
6
7
8
9
10
11
1
12
13
14
15
16
17
18
19
20
21
22
23
27
24
25
26
27
28
29
30
31
-----------------------------------------------------------------------------TOTAL
0
0
0
0
0
0
0
0
0
27
0
1
MEAN
0
0
0
0
0
0
0
0
0
1
0
0
MAX
0
0
0
0
0
0
0
0
0
678
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
53
0
3
-----------------------------------------------------------------------------WTR YR 1999 TOTAL
28 MEAN
0 MAX
678 MIN
0 AC_FT
56
*USGS maintained a gage at this site prior to October 1, 1998 (09478350)
Surface Water Streamflow Data
Page 3

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
788
Santa Cruz @ SR 84
Drainage Area:
Undetermined
Period of Record: March 16, 1994 to current year
Discharge, in cfs, Water Year October 1998 to September 1999
Day
Aug. 31

Peak flows of interest during Water Year 1999
Peak Discharge (cfs)
115

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
9
20
2
24
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
4
21
1
22
23
1
24
25
26
27
28
29
1
30
28
31
31
-----------------------------------------------------------------------------TOTAL
0
0
0
0
0
0
0
0
0
35
65
20
MEAN
0
0
0
0
0
0
0
0
0
1
2
1
MAX
0
0
0
0
0
0
0
0
0
62
115
80
MIN
0
0
0
0
0
0
0
0
0
0
0
0
AC_FT
0
0
0
0
0
0
0
0
0
70
129
40
-----------------------------------------------------------------------------WTR YR 1999 TOTAL
120 MEAN
0 MAX
115 MIN
0 AC_FT
239

Surface Water Streamflow Data
Page 4

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
793
Greene Wash @ SR 84
Drainage Area:
Undetermined
Period of Record: March 23, 1994 to current year
Discharge, in cfs, Water Year October 1998 to September 1999
No recorded flow during Water Year 1999
-----------------------------------------------------------------------------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 1999 TOTAL
0 MEAN
0 MAX
0 MIN
0 AC_FT
0

Surface Water Streamflow Data
Page 5

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
798
Santa Rosa @ SR 84
Drainage Area:
Undetermined (1,780 mi2 are controlled by Tat Momolikot Dam)
Period of Record: March 16, 1994 to current year
Discharge, in cfs, Water Year October 1998 to September 1999
Peak flows of interest during Water Year 1999
Peak Discharge (cfs)
576
Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
2
3
4
5
6
7
28
8
381
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
-----------------------------------------------------------------------------TOTAL
0
0
0
0
0
0
0
0
0
409
0
0
MEAN
0
0
0
0
0
0
0
0
0
13
0
0
MAX
0
0
0
0
0
0
0
0
0
576
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
812
0
0
-----------------------------------------------------------------------------WTR YR 1999 TOTAL
409 MEAN
1 MAX
576 MIN
0 AC_FT
812
Day
Jul. 8

Surface Water Streamflow Data
Page 6

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Drainage Area:

4523
13,223 mi2

Name:

Salt R. @ Priest Dr

See USGS Water-Data Report AZ-99-1 for data for this site.

Flood Flow Frequency
(source: Table 2-4 from Study form Modified Roosevelt Dam)
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 7

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
4563
Spookhill FRS
Drainage Area:
13.6 mi2
Period of Record: November 1987 to current year
Discharge, in cfs, Water Year October 1998 to September 1999
Day
Sep. 14

One flow event during Water Year 1999
Peak Discharge (cfs)
4

-----------------------------------------------------------------------------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
4
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
3
-----------------------------------------------------------------------------WTR YR 1999 TOTAL
1 MEAN
0 MAX
4 MIN
0 AC_FT
3

*Outflow controlled by gated outlet below 11.5 feet gage height.
See also Pool Level and Storage Volume data.

Surface Water Streamflow Data
Page 8

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
4603
IBW @ McKellips Rd.
Drainage Area:
101 mi2
Period of Record: November 1987 to current year
Discharge, in cfs, Water Year October 1998 to September 1999
Day
Jul. 15
Oct. 26
Sep. 20

Peak flows of interest during Water Year 1999
Day
Peak Discharge (cfs)
320
Jul. 7
240
Sep. 19
114

Peak Discharge (cfs)
284
144

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
2
1
22
3
1
30
4
1
12
5
3
6
1
7
1
9
8
9
9
10
11
12
13
14
1
4
15
2
182
16
2
43
17
2
1
18
2
19
1
41
20
1
77
21
34
22
7
23
24
25
2
26
72
27
7
2
28
1
29
1
1
30
1
31
2
-----------------------------------------------------------------------------TOTAL
86
19
1
0
0
0
67
0
0
248
3
158
MEAN
3
1
0
0
0
0
2
0
0
8
0
5
MAX
240
14
1
0
0
0
34
0
0
320
65
144
MIN
0
0
0
0
0
0
0
0
0
0
0
0
AC_FT
171
38
1
0
0
0
133
0
0
492
5
313
-----------------------------------------------------------------------------WTR YR 1999 TOTAL
582 MEAN
2 MAX
320 MIN
0 AC_FT
1154

Surface Water Streamflow Data
Page 9

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
4613
IBW @ Indian Bend
Drainage Area:
88 mi2 (approximate; includes area of Interceptor Channel)
Period of Record: USGS: 1961 – 1984; FCDMC: November 1987 to current year
Discharge, in cfs, Water Year October 1998 to September 1999
Day
Apr. 2

Peak flows of interest during Water Year 1999
Day
Peak Discharge (cfs)
Peak Discharge (cfs)
285
Oct. 31
128

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
----2
97
----3
15
----4
----5
----6
----7
----8
----9
----10
----11
----12
----13
----14
----15
----16
----17
----18
----19
----20
----21
----22
----23
----24
----25
----26
----27
----28
----29
----30
------31
45
-----------------------------------------------------------------------------------TOTAL
45
0
0
0
0
0
112
0
0
0
----MEAN
1
0
0
0
0
0
4
0
0
0
----MAX
128
0
0
0
0
0
285
0
0
0
----MIN
0
0
0
0
0
0
0
0
0
0
----AC_FT
89
1
0
0
0
0
222
0
0
0
---------------------------------------------------------------------------------WTR YR 1999 TOTAL
157 MEAN
0 MAX
285 MIN
0 AC_FT
312
NOTE: Gage was removed for construction from July 29 through September, 1999.
Surface Water Streamflow Data
Page 10

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
4618
IBW @ Indian School
Drainage Area:
90 mi2 (approximate)
Period of Record: November 25, 1997 to current year
Discharge, in cfs, Water Year October 1998 to September 1999
Day
Jul. 14
Sep. 19

Peak flows of interest during Water Year 1999
Day
Peak Discharge (cfs)
Peak Discharge (cfs)
658
Jul. 15
324
214

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
1
2
14
3
1
4
5
6
7
8
9
10
11
12
13
14
65
15
117
16
17
18
19
10
20
35
21
22
23
24
25
26
27
28
29
30
31
4
-----------------------------------------------------------------------------TOTAL
0
0
0
0
0
0
15
0
0
182
4
46
MEAN
0
0
0
0
0
0
1
0
0
6
0
2
MAX
0
0
0
0
0
0
72
0
0
658
59
214
MIN
0
0
0
0
0
0
0
0
0
0
0
0
AC_FT
0
0
0
0
0
0
31
0
0
361
9
91
-----------------------------------------------------------------------------WTR YR 1999 TOTAL
247 MEAN
1 MAX
658 MIN
0 AC_FT
491

Surface Water Streamflow Data
Page 11

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
4623
IBW Interceptor
Drainage Area:
35 mi2
Period of Record: April 21, 1994 to current year
Discharge, in cfs, Water Year October 1998 to September 1999
No recorded flows during Water Year 1999
-----------------------------------------------------------------------------TOTAL
0
0
0
0
0
0
0
0
0
0
----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
----AC_FT
0
0
0
0
0
0
0
0
0
0
---------------------------------------------------------------------------------WTR YR 1999 TOTAL
0 MEAN
0 MAX
0 MIN
0 AC_FT
0
NOTE: Gage was removed for construction from July 8 through September 30, 1999.

Surface Water Streamflow Data
Page 12

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
4628
IBW @ McDonald
Drainage Area:
88 mi2 (approximate)
Period of Record: November 24, 1997 to current year
Discharge, in cfs, Water Year October 1998 to September 1999
Day
Jul. 14
Jul. 15

Peak flows of interest during Water Year 1999*
Day
Peak Discharge (cfs)
Peak Discharge (cfs)
677
Sep. 20
412
118

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
2
32
3
27
4
5
6
7
8
8
3
9
10
11
12
13
14
88
15
71
16
12
17
18
19
13
20
111
21
30
22
23
24
25
26
27
28
29
30
31
3
-----------------------------------------------------------------------------TOTAL
3
0
0
0
0
0
59
0
0
182
0
154
MEAN
0
0
0
0
0
0
2
0
0
6
0
5
MAX
17
0
0
0
0
0
80
0
0
677
0
412
MIN
0
0
0
0
0
0
0
0
0
0
0
0
AC_FT
5
0
0
0
0
0
117
0
0
360
0
305
-----------------------------------------------------------------------------WTR YR 1999 TOTAL
397 MEAN
1 MAX
677 MIN
0 AC_FT
788
*NOTE: Golf course construction immediately upstream from the gage may have impacted flows
and/or the discharge rating from July through September. Any changes to the data resulting from
evaluation of the channel after construction will be made in the Water Year 2000 report.

Surface Water Streamflow Data
Page 13

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
4638
Tatum Basin Inflow
Drainage Area:
2.17 mi2
Period of Record: May 6, 1998 to current year
Discharge, in cfs, Water Year October 1998 to September 1999
Day
Jul. 14

One flow event during Water Year 1999
Peak Discharge (cfs)
41

-----------------------------------------------------------------------------TOTAL
0
0
0
0
0
0
0
0
0
2
0
0
MEAN
0
0
0
0
0
0
0
0
0
0
0
0
MAX
0
0
0
0
0
0
0
0
0
41
0
0
MIN
0
0
0
0
0
0
0
0
0
0
0
0
AC_FT
0
0
0
0
0
0
0
0
0
4
0
0
-----------------------------------------------------------------------------WTR YR 1999 TOTAL
2 MEAN
0 MAX
41 MIN
0 AC_FT
4

Surface Water Streamflow Data
Page 14

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
4643
IBW @ Sweetwater
Drainage Area:
9.2 mi2
Period of Record: December 27, 1990 to current year*
Discharge, in cfs, Water Year October 1998 to September 1999

Day
Feb. 5
Apr. 5
Feb. 6

Peak flows of interest during Water Year 1999
Peak Discharge (cfs)
Day
Peak Discharge (cfs)
460
Apr. 8**
343
343**
Apr. 2**
292
211
Sep. 19
201

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
----2
1
2
----4
115
3
----2
73
4
----2
83
5
----3
100
72
1
6
----7
41
62
7
7
----4
6
54
1
8
----1
1
24
1
9
----10
----11
----12
----13
----1
14
----14
15
----1
3
16
----22
17
----43
18
--30
5
19
--21
8
13
20
--10
5
21
--5
22
--1
23
--5
24
--25
25
--26
--1
27
--2
14
28
--2
2
29
--5
4
30
--7
3
31
-------------------------------------------------------------------------------TOTAL
--- 1122
26
0
148
133
484
0
0
74
23
18
MEAN
--37
1
0
5
4
16
0
0
2
1
1
MAX
--46
22
0
460
71
343
0
0
159
102
201
MIN
--0
0
0
0
0
0
0
0
0
0
0
AC_FT
--- 2226
51
0
294
263
959
0
0
146
46
36
-----------------------------------------------------------------------------WTR YR 1999 TOTAL
2028 MEAN
9 MAX
460 MIN
0 AC_FT
4022
*NOTE: The gage was down due to construction from October 1, 1998 to November 17, 1998. The
gage was installed on November 18, 1998. The gage was moved from the Sweetwater Road bridge to
the 36th Street bridge, approximately 500 feet downstream.
**Construction activities were continuing during the April events, causing water to pond at the gage.
Data for this event may be overestimated.

Surface Water Streamflow Data
Page 15

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
4643
IBW @ Sweetwater
Drainage Area:
9.2 mi2
Period of Record: December 27, 1990 to current year
Discharge, in cfs, Water Year October 1998 to September 1999

Flood Flow Frequency
(source: FEMA Sept. 1995)
Magnitude and Probability of Instantaneous Peak Flow
Discharge, in cfs, for Indicated Recurrence Interval

Surface Water Streamflow Data
Page 16

10-year

50-year

100-year

2,000

3,500

6,000

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
4648
E.Fork CC #1
Drainage Area:
1.18 mi2
Period of Record: March 2, 1994 to current year
Discharge, in cfs, Water Year October 1998 to September 1999
Day
Jul. 15
Jul. 18

Only three flow events during Water Year 1999
Day
Peak Discharge (cfs)
Peak Discharge (cfs)
15
Oct. 30
14
11

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
2
3
4
5
6
7
8
9
10
11
12
13
14
1
15
1
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
1
31
-----------------------------------------------------------------------------TOTAL
1
0
0
0
0
0
0
0
0
3
0
0
MEAN
0
0
0
0
0
0
0
0
0
0
0
0
MAX
14
0
0
0
0
0
0
0
0
15
0
0
MIN
0
0
0
0
0
0
0
0
0
0
0
0
AC_FT
1
0
0
0
0
0
0
0
0
5
0
0
-----------------------------------------------------------------------------WTR YR 1999 TOTAL
3 MEAN
0 MAX
15 MIN
0 AC_FT
6
See also Pool Level and Storage Volume Data
Surface Water Streamflow Data
Page 17

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
4653
Tatum Basin Outflow
Drainage Area:
2.17 mi2
Period of Record: May 8, 1998 to current year
Discharge, in cfs, Water Year October 1998 to September 1999
No recorded flow during Water Year 1999
-----------------------------------------------------------------------------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 1999 TOTAL
0 MEAN
0 MAX
0 MIN
0 AC_FT
0

See also Pool Level and Storage Volume Data

Surface Water Streamflow Data
Page 18

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
4658
E.Fork CC #4
Drainage Area:
0.68 mi2
Period of Record: January 18, 1994 to current year
Discharge, in cfs, Water Year October 1998 to September 1999
Day
Jul. 14

Peak flows of interest during Water Year 1999
Day
Peak Discharge (cfs)
Peak Discharge (cfs)
71
Jul. 18
41

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
1
1
2
2
6
1
1
3
1
1
1
4
2
5
2
2
1
6
1
2
1
1
3
7
1
1
1
2
2
8
2
1
9
1
1
10
1
11
12
13
14
8
2
15
2
4
2
16
1
2
2
1
17
1
3
1
18
6
1
19
3
2
1
20
1
1
2
21
1
1
1
22
2
1
1
23
5
2
24
3
2
25
2
2
1
26
3
2
1
27
1
3
28
1
1
2
29
1
3
2
30
4
2
2
31
1
2
1
-----------------------------------------------------------------------------TOTAL
9
3
10
0
5
5
14
0
0
54
31
20
MEAN
0
0
0
0
0
0
0
0
0
2
1
1
MAX
37
10
13
0
37
9
19
0
0
71
37
24
MIN
0
0
0
0
0
0
0
0
0
0
0
0
AC_FT
19
5
20
0
9
11
28
0
0
107
61
40
-----------------------------------------------------------------------------WTR YR 1999 TOTAL
151 MEAN
0 MAX
71 MIN
0 AC_FT
300

Surface Water Streamflow Data
Page 19

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
4668
EFCC nr 7th Avenue
Drainage Area:
14.1 mi2
Period of Record: May 21, 1997 to current year
Discharge, in cfs, Water Year October 1998 to September 1999
Day
Jul. 14

Peak flows of interest during Water Year 1999
Day
Peak Discharge (cfs)
Peak Discharge (cfs)
682
Oct. 30
213

Discharge (cfs)

EFCC nr 7th Ave. - July 14, 1999
15-m inute m axim um discharges
800
600
400
200
0
07/14/1999
15:00

07/14/1999
18:00

07/14/1999
21:00

07/15/1999
0:00

EFCC nr 7th Ave - Oct. 30, 1998
15-minute m axim um discharges
250
200
150
100
50
0
10/30/1998
12:00

10/30/1998
15:00

10/30/1998
18:00

10/30/1998
21:00

10/31/1998
0:00

continued on next page
Surface Water Streamflow Data
Page 20

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
4668
EFCC nr 7th Avenue
Drainage Area:
14.1 mi2
Period of Record: May 21, 1997 to current year
Discharge, in cfs, Water Year October 1998 to September 1999
Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
2
2
5
3
5
4
5
5
1
2
6
1
1
1
7
8
9
10
11
12
13
14
31
15
1
1
16
17
18
19
20
21
22
23
1
24
25
3
26
4
27
5
28
29
2
--30
18
--31
1
---------------------------------------------------------------------------------------TOTAL
26
2
4
0
1
0
17
0
0
34
6
0
MEAN
1
0
0
0
0
0
1
0
0
1
0
0
MAX
213
8
9
0
4
0
17
0
0
682
86
4
MIN
0
0
0
0
0
0
0
0
0
0
0
0
AC_FT
52
4
9
0
3
0
33
0
0
67
12
1
-----------------------------------------------------------------------------WTR YR 1999 TOTAL
91 MEAN
0 MAX
682 MIN
0 AC_FT
181

Surface Water Streamflow Data
Page 21

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
4678
Lake Marguarite
Drainage Area:
Undetermined
Period of Record: November 25, 1997 to current year
Discharge, in cfs, Water Year October 1998 to September 1999
Day
Jul. 14
Jul. 7

Peak flows of interest during Water Year 1999
Day
Peak Discharge (cfs)
Peak Discharge (cfs)
237
Sep. 19
190
147

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
2
3
4
5
6
7
14
8
37
9
10
11
12
13
14
32
15
37
16
17
18
19
34
20
21
22
23
24
25
26
27
28
29
30
31
-----------------------------------------------------------------------------TOTAL
0
0
0
0
0
0
0
0
0
119
0
34
MEAN
0
0
0
0
0
0
0
0
0
4
0
1
MAX
0
0
0
0
0
0
0
0
0
237
0
190
MIN
0
0
0
0
0
0
0
0
0
0
0
0
AC_FT
0
0
0
0
0
0
0
0
0
236
0
68
-----------------------------------------------------------------------------WTR YR 1999 TOTAL
153 MEAN
0 MAX
237 MIN
0 AC_FT
304
Note: Approximately 60 cfs pass the gage before detection due to the elevation of the instrument.
Surface Water Streamflow Data
Page 22

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
4683
E.Fork CC #3
Drainage Area:
3.52 mi2 (1.86 mi2 controlled by EFCC#1 and EFCC#4)
Period of Record: July 27, 1994 to current year
Discharge, in cfs, Water Year October 1998 to September 1999
Day
Jul. 14
Apr. 5

Peak flows of interest during Water Year 1999
Day
Peak Discharge (cfs)
Peak Discharge (cfs)
312
Oct. 30
18
10

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
2
3
4
5
10
6
3
7
3
8
9
10
11
12
13
14
25
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
3
31
-----------------------------------------------------------------------------TOTAL
3
0
0
0
0
0
16
0
0
25
0
0
MEAN
0
0
0
0
0
0
1
0
0
1
0
0
MAX
18
0
0
0
0
0
10
0
0
312
0
0
MIN
0
0
0
0
0
0
0
0
0
0
0
0
AC_FT
6
0
0
0
0
0
32
0
0
50
0
0
-----------------------------------------------------------------------------WTR YR 1999 TOTAL
44 MEAN
0 MAX
312 MIN
0 AC_FT
88
NOTE: Flows of approximately 2-year and below are passed beneath the detention basin via storm
drains.
See also Pool Level and Storage Volume Data

Surface Water Streamflow Data
Page 23

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Drainage Area:

Name:
4688
Berneil Wash
9.5 mi2 (approximate) – significant split flows at Mt. View and 64th
Street and Mt. View and Miller Road
Period of Record: July 30, 1998 to current year
Discharge, in cfs, Water Year October 1998 to September 1999
Day
Jul. 14
Jul. 7

Flows of interest during Water Year 1999
Day
Peak Discharge (cfs)
Peak Discharge (cfs)
447
Sep. 19
305
207
Nov. 10
126

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
2
1
10
3
1
4
2
1
5
2
1
6
5
2
7
4
14
8
2
1
9
10
10
11
12
13
14
30
15
1
16
17
18
1
19
1
20
20
2
21
22
23
24
25
2
26
27
4
28
29
30
6
31
-----------------------------------------------------------------------------TOTAL
8
10
16
0
0
0
13
0
0
51
4
23
MEAN
0
0
1
0
0
0
0
0
0
2
0
1
MAX
64
126
23
0
0
0
50
0
0
447
64
305
MIN
0
0
0
0
0
0
0
0
0
0
0
0
AC_FT
15
20
32
0
0
0
26
0
0
101
8
45
-----------------------------------------------------------------------------WTR YR 1999 TOTAL
125 MEAN
0 MAX
447 MIN
0 AC_FT
248

Surface Water Streamflow Data
Page 24

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
4693
IBW @ Shea Blvd.
Drainage Area:
24.6 mi2
Period of Record: June 9, 1998 to current year
Discharge, in cfs, Water Year October 1998 to September 1999
Day
Sep. 19
Aug. 27
Jul. 18

Flows greater than 250 cfs during Water Year 1999
Day
Peak Discharge (cfs)
Peak Discharge (cfs)
1,247
Jul. 14
896
870
Jul. 29
472
454
Jul. 23 & Aug. 6 297

Discharge (cfs)

IB W @ S h e a B lv d - E v e n t o f S e p t . 1 9 , 1 9 9 9
1 5 - m in u t e M a x im u m D is c h a r g e s
1400
1200
1000
800
600
400
200
0
0 9 /1 9 /1 9 9 9
1 2 :0 0

0 9 /1 9 /1 9 9 9
1 8 :0 0

0 9 /2 0 /1 9 9 9
0 :0 0

0 9 /2 0 /1 9 9 9
6 :0 0

Discharge (cfs)

IBW @ Shea - event of July 14, 1999
15-minute Maximum Discharges
1000
800
600
400
200
0
07/14/1999 12:00

07/14/1999 18:00

07/15/1999 0:00

Flood Flow Frequency
(based on HECWRC implementation of Bulletin 17B, n=14 for USGS CSG 09512090, operated by
USGS approximately 500 feet upstream of Shea Blvd.)
Magnitude and Probability of Instantaneous Peak Flow
Discharge, in cfs, for Indicated Recurrence Interval
2-year
5-year
10-year
20-year
50-year
100-year
820
1,810
2,730
3,840
5,630
7,260
continued on next page

Surface Water Streamflow Data
Page 25

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
4693
IBW @ Shea Blvd.
Drainage Area:
24.6 mi2
Period of Record: June 9, 1998 to current year
Discharge, in cfs, Water Year October 1998 to September 1999
Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
2
13
51
3
3
4
13
5
8
7
6
8
15
6
50
7
3
14
2
8
22
9
17
10
11
12
13
9
14
123
5
15
3
49
16
1
2
17
18
36
19
33
99
20
28
21
22
23
29
24
33
25
10
26
19
27
83
28
2
29
29
15
87
30
36
1
31
8
-----------------------------------------------------------------------------TOTAL
73
34
31
0
23
1
71
0
0
443
165
131
MEAN
2
1
1
0
1
0
2
0
0
14
5
4
MAX
189
133
37
0
37
24
245
0
0
896
870 1247
MIN
0
0
0
0
0
0
0
0
0
0
0
0
AC_FT
145
66
62
0
46
2
141
0
0
878
327
260
-----------------------------------------------------------------------------WTR YR 1999 TOTAL
972 MEAN
3 MAX
1247 MIN
0 AC_FT
1928

Surface Water Streamflow Data
Page 26

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
4748
Old Xcut @ McDowell
Drainage Area:
Undetermined
Period of Record: July 27, 1994 to current year
Discharge, in cfs, Water Year October 1998 to September 1999
Day
Jul. 14
Jul. 15

Peak flows of interest during Water Year 1999
Day
Peak Discharge (cfs)
Peak Discharge (cfs)
272
Sep. 19
197
187
Jul. 29
138

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
30
28
2
41
3
26
4
30
5
12
3
6
14
1
7
4
6
8
3
9
34
10
30
11
28
12
30
13
28
14
13
20
15
12
13
32
16
33
17
37
18
37
7
19
36
14
23
20
36
40
21
33
22
27
23
25
24
34
25
33
26
4
34
27
36
7
28
1
11
29
2
1
20
30
12
16
31
3
14
14
-----------------------------------------------------------------------------TOTAL
19
3
30
0
0
14
748
28
0
99
26
63
MEAN
1
0
1
0
0
0
25
1
0
3
1
2
MAX
71
45
71
0
0
30
115
30
0
272
115
197
MIN
0
0
0
0
0
0
0
0
0
0
0
0
AC_FT
38
6
59
0
0
28 1483
56
0
197
51
125
-----------------------------------------------------------------------------WTR YR 1999 TOTAL
1030 MEAN
3 MAX
272 MIN
0 AC_FT
2044
NOTE: Some flows occur as a result of releases by the Salt River Project from the Arizona Canal and
by irrigation return water.
Surface Water Streamflow Data
Page 27

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
4803
Dreamy Draw Dam
Drainage Area:
1.3 mi2
Period of Record: November 1987 to current year
Revised Records: WY1996, WY1995
Discharge, in cfs, Water Year October 1998 to September 1999
Day
Nov. 9

Two flows during Water Year 1999
Day
Peak Discharge (cfs)
Peak Discharge (cfs)
24
Jul. 14
5*

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
--2
--3
----4
--5
6
7
8
9
1
10
11
12
--13
--14
1
15
16
17
18
19
20
21
22
23
24
--25
--26
--27
--28
--29
--30
----31
---------------------------------------------------------------------------------TOTAL
0
1
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
24
0
0
0
0
0
0
0
5
0
0
MIN
0
0
0
0
0
0
0
0
0
0
0
0
AC_FT
0
1
0
0
0
0
0
0
0
1
0
0
-----------------------------------------------------------------------------WTR YR 1999 TOTAL
1 MEAN
0 MAX
24 MIN
0 AC_FT
2
* Event of July 14 is more likely to have been a small impoundment rather than an actual discharge.
Also see Pool Level and Storage Volume Data.

Surface Water Streamflow Data
Page 28

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
4808
ACDC @ 36th St.
Drainage Area:
4.82 mi2
Period of Record: February 24, 1994 to current year
Discharge, in cfs, Water Year October 1998 to September 1999
Peak flows of interest during Water Year 1999
Peak Discharge (cfs)
324
Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
2
2
3
4
1
5
6
1
7
8
9
10
11
12
13
14
28
15
24
16
1
17
18
19
20
21
22
23
24
25
26
27
1
28
29
30
31
-----------------------------------------------------------------------------TOTAL
0
0
1
0
0
0
2
0
0
53
1
0
MEAN
0
0
0
0
0
0
0
0
0
2
0
0
MAX
0
0
3
0
0
0
4
0
0
324
3
2
MIN
0
0
0
0
0
0
0
0
0
0
0
0
AC_FT
0
0
2
0
0
0
4
0
0
105
2
1
-----------------------------------------------------------------------------WTR YR 1999 TOTAL
57 MEAN
0 MAX
324 MIN
0 AC_FT
114
Day
Jul. 14

Flood Flow Frequency for inflow to sediment basin (HEC-1 for ACDC ADMS)
Magnitude and Probability of Instantaneous Peak Flow
Discharge, in cfs, for Indicated Recurrence Interval
2-year
10-year
100-year
590
2,510
5,410

Surface Water Streamflow Data
Page 29

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
4813
ACDC @ 14th St.
Drainage Area:
10.2 mi2
Period of Record: February 9, 1994
Discharge, in cfs, Water Year October 1998 to September 1999
Day
Aug. 27

Peak flows of interest during Water Year 1999*
Peak Discharge (cfs)
53

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
----2
----3
----4
----5
----6
----7
----8
----9
----10
----11
----12
----13
----14
----15
----16
----17
----18
----19
------20
----21
----22
----23
----24
----25
----26
----27
----6
28
----7
29
----30
----31
---------------------------------------------------------------------------------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
53
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 1999 TOTAL
13 MEAN
0 MAX
53 MIN
0 AC_FT
27
*The gage was down from May 19 to July 19, 1999. Two known events were missed: July 7 and July
14, 1999. High water marks were not present to verify flows.
Surface Water Streamflow Data
Page 30

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
4818
Tenth Street Wash Basin #1
Drainage Area:
1.21 mi2
Period of Record: November 26, 1996
Discharge, in cfs, Water Year October 1998 to September 1999
Day
Sep. 19

Peak flows of interest during Water Year 1999
Day
Peak Discharge (cfs)
Peak Discharge (cfs)
22
Aug. 27
14

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
2
3
4
5
6
7
1
8
9
10
11
12
13
14
1
15
16
17
18
19
3
20
3
21
22
23
24
25
26
27
3
28
1
29
30
31
-----------------------------------------------------------------------------TOTAL
0
0
0
0
0
0
0
0
0
2
5
6
MEAN
0
0
0
0
0
0
0
0
0
0
0
0
MAX
3
0
0
0
2
0
3
0
0
7
14
22
MIN
0
0
0
0
0
0
0
0
0
0
0
0
AC_FT
0
0
0
0
0
0
0
0
0
4
9
12
-----------------------------------------------------------------------------WTR YR 1999 TOTAL
13 MEAN
0 MAX
22 MIN
0 AC_FT
26
NOTE: Up to 300 cfs may bypass the basin in Tenth Street Wash

Surface Water Streamflow Data
Page 31

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
4823
ACDC @ 43rd Ave.
Drainage Area:
56 mi2 below Cave Buttes Dam
Period of Record: December 17, 1991 to current year
Revised Records: WY1998:WY1997
Discharge, in cfs, Water Year October 1998 to September 1999
Peak flows of interest during Water Year 1999
Day
Peak Discharge (cfs)
Peak Discharge (cfs)
1,395
Jul. 15
1,195
984
Sep. 19
654

Day
Jul. 7
Jul. 14

AC D C a t 4 3 r d Av e - Ev e n t o f J u ly 7 , 1 9 9 9
1 5 -m in u te M a x im u m D is c h a r g e s

Discharge (cfs)

1500
1000
500
0
07/07/1999 21:00

07/08/1999 0:00

07/08/1999 3:00

07/08/1999 6:00

Discharge (cfs)

AC D C @ 43rd Av e - E v e nt of July 14, 1999
15-minute M aximum D ischarge s
1500
1000
500
0
07/14/1999
12:00

07/14/1999
18:00

07/15/1999
0:00

07/15/1999
6:00

07/15/1999
12:00

continued on next page

Surface Water Streamflow Data
Page 32

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
4823
ACDC @ 43rd Ave.
Drainage Area:
56 mi2 below Cave Buttes Dam
Period of Record: December 17, 1991 to current year
Revised Records: WY1998:WY1997
Discharge, in cfs, Water Year October 1998 to September 1999
Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
2
3
4
5
7
6
56
106
7
88
8
100
9
10
11
12
13
14
179
15
194
16
17
18
19
58
20
21
22
23
24
25
26
27
28
29
30
31
-----------------------------------------------------------------------------TOTAL
0
0
0
0
0
0
0
0
0
617
113
58
MEAN
0
0
0
0
0
0
0
0
0
20
4
2
MAX
0
0
0
0
0
0
0
0
0 1395
347
654
MIN
0
0
0
0
0
0
0
0
0
0
0
0
AC_FT
0
0
0
0
0
0
0
0
0 1223
224
116
-----------------------------------------------------------------------------WTR YR 1999 TOTAL
788 MEAN
2 MAX
1395 MIN
0 AC_FT
1563

Surface Water Streamflow Data
Page 33

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
4833
Cave Creek @ Cactus
Drainage Area:
33.6 mi2 below Cave Buttes Dam
Period of Record: June 21, 1991 to current year
Discharge, in cfs, Water Year October 1998 to September 1999
Day
Jul. 14
Oct. 31

Peak flows of interest in Water Year 1999
Day
Peak Discharge (cfs)
Peak Discharge (cfs)
1,154
Aug. 27
189
179

Discharge (cfs)

C a v e C r e e k a t C a c tu s - E v e n t o f J u ly 1 4 , 1 9 9 9
1 5 -m in u te M a x im u m D is c h a r g e s
1400
1200
1000
800
600
400
200
0
0 7 /1 4 /1 9 9 9
1 2 :0 0

0 7 /1 5 /1 9 9 9 0 :0 0

0 7 /1 5 /1 9 9 9
1 2 :0 0

0 7 /1 6 /1 9 9 9 0 :0 0

Flood Flow Frequency for inflow to sediment basin (HEC-1 for ACDC ADMS)
Magnitude and Probability of Instantaneous Peak Flow
Discharge, in cfs, for Indicated Recurrence Interval
2-year
10-year
100-year
2,225
5,750
14,240

Surface Water Streamflow Data
Page 34

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
4833
Cave Creek @ Cactus
Drainage Area:
33.6 mi2 below Cave Buttes Dam
Period of Record: June 21, 1991 to current year
Discharge, in cfs, Water Year October 1998 to September 1999
Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
44
1
2
6
7
35
3
2
5
7
4
1
1
1
5
1
1
6
3
6
40
7
6
3
11
29
8
1
2
2
86
20
9
1
1
1
53
8
10
1
1
28
5
11
1
1
12
20
12
3
11
13
4
14
133
1
15
10
297
16
5
240
17
2
198
18
2
80
19
1
132
7
20
1
104
59
21
1
1
53
3
22
1
1
28
23
15
1
24
60
25
1
56
26
10
35
27
15
22
26
28
2
1
10
97
29
1
1
3
10
30
46
1
31
154
-----------------------------------------------------------------------------TOTAL
231
60
55
0
16
0
44
0
0 1661
272
69
MEAN
7
2
2
0
1
0
1
0
0
54
9
2
MAX
179
92
22
0
7
0
75
0
0 1154
189
99
MIN
0
0
0
0
0
0
0
0
0
0
0
0
AC_FT
458
119
109
0
31
0
87
0
0 3295
539
138
-----------------------------------------------------------------------------WTR YR 1999 TOTAL
2408 MEAN
7 MAX
1154 MIN
0 AC_FT
4776
Note: Receding limbs of hydrographs are greatly affected by clogging of 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. Weir flow begins into main channel above 10 feet
gauge height.

Surface Water Streamflow Data
Page 35

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
4863
Rawhide Wash
Drainage Area:
Undetermined
Period of Record: July 27, 1999 to current year
Discharge, in cfs, Water Year October 1998 to September 1999
No recorded flow at this location since installation during Water Year 1999
-----------------------------------------------------------------------------TOTAL
------------------0
0
0
MEAN
------------------0
0
0
MAX
------------------0
0
0
MIN
------------------0
0
0
AC_FT
------------------0
0
0
-----------------------------------------------------------------------------WTR YR 1999 TOTAL
0 MEAN
0 MAX
0 MIN
0 AC_FT
0

Surface Water Streamflow Data
Page 36

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
4903
Cave Buttes Outlet
Drainage Area:
191 mi2 at Cave Buttes Dam
Period of Record: November 1987 to current year
Discharge, in cfs, Water Year October 1998 to September 1999
Day
Oct. 30
Oct. 26

Peak flows of interest during Water Year 1999
Day
Peak Discharge (cfs)
Peak Discharge (cfs)
212
Oct. 31
186
150

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
2
10
3
4
5
6
5
7
8
8
24
9
7
10
11
2
12
3
13
14
7
15
23
3
16
23
17
20
18
6
19
23
20
22
21
12
22
23
11
24
3
25
26
42
27
28
29
30
74
31
39
-----------------------------------------------------------------------------TOTAL
155
0
0
0
0
0
10
0
0
194
0
8
MEAN
5
0
0
0
0
0
0
0
0
6
0
0
MAX
212
0
0
0
0
0
26
0
0
32
0
26
MIN
0
0
0
0
0
0
0
0
0
0
0
0
AC_FT
307
0
0
0
0
0
19
0
0
384
0
15
-----------------------------------------------------------------------------WTR YR 1999 TOTAL
366 MEAN
1 MAX
212 MIN
0 AC_FT
725
Note: This is the outflow from Cave Buttes Dam. See also Pool Level and Storage Volume Data.
Surface Water Streamflow Data
Page 37

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
4918
Cave Cr nr Cave Cr
Drainage Area:
121 mi2
Period of Record: USGS ID# 09512300 – 05/17/1958 to 09/30/1967
WY 1968 – WY 1994 – Annual peaks only
FCDMC – May 27, 1994 to current year
Discharge, in cfs, Water Year October 1998 to September 1999
Day
Jul. 15
Jul. 23

Peak flows of interest during Water Year 1999
Day
Peak Discharge (cfs)
Peak Discharge (cfs)
393
Oct. 26
306
291
Jul. 7
271

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
2
3
4
5
6
7
7
8
9
10
11
12
13
14
15
137
16
17
18
19
20
21
22
10
23
80
24
25
26
75
27
7
28
29
30
13
31
3
-----------------------------------------------------------------------------TOTAL
98
0
0
0
0
0
0
0
0
234
0
0
MEAN
3
0
0
0
0
0
0
0
0
8
0
0
MAX
306
0
0
0
0
0
0
0
0
393
0
0
MIN
0
0
0
0
0
0
0
0
0
0
0
0
AC_FT
193
0
0
0
0
0
0
0
0
464
0
0
-----------------------------------------------------------------------------WTR YR 1999 TOTAL
332 MEAN
1 MAX
393 MIN
0 AC_FT
658

2-year
1,420

Flood Flow Frequency
(based on HECWRC implementation of Bulletin 17B, n = 38)
Magnitude and Probability of Instantaneous Peak Flow
Discharge, in cfs, for Indicated Recurrence Interval
5-year
10-year
20-year
50-year
4,420
7,670
11,900
18,900

Surface Water Streamflow Data
Page 38

100-year
25,600

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
4923
Cave Cr.@ SpurCross
USGS Station:
09512280
Drainage Area:
121 mi2
Period of Record: June 13, 1993 to current year
See USGS Water-Data Report AZ-99-1 for data for this site.

Surface Water Streamflow Data
Page 39

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
5013
Columbus Wash
Drainage Area:
Undetermined
Period of Record: September 22, 1999 to current year
Discharge, in cfs, Water Year October 1998 to September 1999
No recorded flow at this location since installation during Water Year 1999
-----------------------------------------------------------------------------TOTAL
----------------------0
MEAN
----------------------0
MAX
----------------------0
MIN
----------------------0
AC_FT
----------------------0
-----------------------------------------------------------------------------WTR YR 1999 TOTAL
0 MEAN
0 MAX
0 MIN
0 AC_FT
0

Surface Water Streamflow Data
Page 40

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
5093
Centennial @ Wenden
Drainage Area:
586 mi2 excluding area diverted from Sols Wash at Sols Tank
Period of Record: September 16, 1998 to current year
Discharge, in cfs, Water Year October 1998 to September 1999
Peak flows of interest during Water Year 1999
Peak Discharge (cfs)
209
Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
2
3
4
5
6
7
8
9
10
11
12
13
14
39
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
-----------------------------------------------------------------------------TOTAL
0
0
0
0
0
0
0
0
0
39
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
209
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
78
0
0
-----------------------------------------------------------------------------WTR YR 1999 TOTAL
39 MEAN
0 MAX
209 MIN
0 AC_FT
78
Day
Jul. 14

Surface Water Streamflow Data
Page 41

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
5103
Centennial Railroad
USGS Station:
09517490
Drainage Area:
1,817 mi2
Period of Record: February 15, 1990 to current year
May 15, 1980 to September 30, 1985
Discharge, in cfs, Water Year October 1998 to September 1999
See USGS Water-Data Report AZ-99-1 for data for this site.

Surface Water Streamflow Data
Page 42

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
5113
Saddleback FRS
Drainage Area:
29.6 mi2 excluding area brought in from Harquahala FRS
Period of Record: December 16, 1988 to current year
Discharge, in cfs, Water Year October 1998 to September 1999
No recorded flows during Water Year 1999
-----------------------------------------------------------------------------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 1999 TOTAL
0 MEAN
0 MAX
0 MIN
0 AC_FT
0
See also Pool Level and Storage Volume Data.

Surface Water Streamflow Data
Page 43

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
5128
Harquahala FRS
Drainage Area:
102.3 mi2
Period of Record: March 1, 1994 to current year
Discharge, in cfs, Water Year October 1998 to September 1999
No recorded flows during Water Year 1999
-----------------------------------------------------------------------------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 1999 TOTAL
0 MEAN
0 MAX
0 MIN
0 AC_FT
0
See also Pool Level and Storage Volume Data.

Surface Water Streamflow Data
Page 44

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
5163
Tiger Wash
Drainage Area:
85.2 mi2
Period of Record: September 15, 1999 to current year. USGS maintained a continuous
gage from Sept. 1965 to Sept. 1979. The station was reactivated in
March 1991 as a peak flow gage site.
Discharge, in cfs, Water Year October 1998 to September 1999
No recorded flows at this location since installation during Water Year 1999
-----------------------------------------------------------------------------TOTAL
----------------------0
MEAN
----------------------0
MAX
----------------------0
MIN
----------------------0
AC_FT
----------------------0
-----------------------------------------------------------------------------WTR YR 1999 TOTAL
0 MEAN
0 MAX
0 MIN
0 AC_FT
0

Also see USGS Water-Data Report AZ-99-1 for data for this site. USGS Station Number 09517280.

Surface Water Streamflow Data
Page 45

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
5203
Buckeye FRS #1
Drainage Area:
74 mi2
Period of Record: November 1987 to current year
Discharge, in cfs, Water Year October 1998 to September 1999

Day
Jul. 14
Jul. 15

Peak flows of interest during Water Year 1999
(for levels above 1.00 feet gage height)
Peak Discharge (cfs)
Day
Peak Discharge (cfs)
108
Jul. 11
94
84

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
2
3
4
5
6
7
8
9
10
2
11
35
12
3
13
14
19
15
28
16
4
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
-----------------------------------------------------------------------------TOTAL
0
0
0
0
0
0
0
0
0
91
0
0
MEAN
0
0
0
0
0
0
0
0
0
3
0
0
MAX
0
0
0
0
0
0
0
0
0
108
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
181
0
0
-----------------------------------------------------------------------------WTR YR 1999 TOTAL
91 MEAN
0 MAX
108 MIN
0 AC_FT
181
NOTE: Because of local drawdown effects at the gage on the principal outlet, discharges for stages
below about one foot gage height are approximate.
See also Pool Level and Storage Volume Data.

Surface Water Streamflow Data
Page 46

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
5208
Buckeye FRS #2
Drainage Area:
5.7 mi2 without area from Buckeye #3 FRS
Period of Record: November 11, 1992 to current year
Discharge, in cfs, Water Year October 1998 to September 1999
Day
Jul. 8

Peak flows of interest during Water Year 1999
Peak Discharge (cfs)
40

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
2
3
4
5
6
7
8
8
9
1
10
11
12
13
14
15
16
17
18
19
2
20
21
22
23
24
25
26
27
28
29
30
31
-----------------------------------------------------------------------------TOTAL
0
0
0
0
0
0
0
0
0
9
0
2
MEAN
0
0
0
0
0
0
0
0
0
0
0
0
MAX
0
0
0
0
0
0
0
0
0
40
0
2
MIN
0
0
0
0
0
0
0
0
0
0
0
0
AC_FT
0
0
0
0
0
0
0
0
0
17
0
4
-----------------------------------------------------------------------------WTR YR 1999 TOTAL
11 MEAN
0 MAX
40 MIN
0 AC_FT
21
NOTE: Because of local drawdown effects at the gage on the principal outlet, discharges for stages
below about one foot gage height are approximate.
Surface Water Streamflow Data
Page 47

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
5223
Hassy nr Morristown
Drainage Area:
711 mi2
Period of Record: March 14, 1994 to current year
Discharge, in cfs, Water Year October 1998 to September 1999
See USGS Water-Data Report AZ-99-1 for data for this site.
Flood Flow Frequency
(based on HECWRC implementation of Bulletin 17B, n = 44)
expected probability shown since it plots graphically closer to the observed data
Magnitude and Probability of Instantaneous Peak Flow
Discharge, in cfs, for Indicated Recurrence Interval
2-year
5-year
10-year
20-year
50-year
100-year
2,920
10,200
18,400
29,200
47,500
64,700

Surface Water Streamflow Data
Page 48

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
5228
Hassayampa @ US 60
Drainage Area:
711 mi2
Period of Record: March 14, 1994 to current year
Discharge, in cfs, Water Year October 1998 to September 1999
Peak flows of interest during Water Year 1999
Day
Peak Discharge (cfs)
Peak Discharge (cfs)
5,096*
Aug. 31
3,363

Day
Jul. 25

Discharge (cfs)

Hassayampa River at US60 - Aug. 31
15-minute Maximum Discharges
4000
3500
3000
2500
2000
1500
1000
500
0
08/31/1999 18:00

08/31/1999 20:00

08/31/1999 22:00

09/01/1999 0:00

NOTE: Flows shown in the hydrograph at values below approximately 2,000 cfs are suspect since
ponding at the gage may have occurred.
* Gage failed to record during the event of July 25, 1999. The peak was estimated from high water
marks on the crest stage gage located at the gage site. No hydrograph is available.

continued on next page
Surface Water Streamflow Data
Page 49

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
5228
Hassayampa @ US 60
Drainage Area:
711 mi2
Period of Record: March 14, 1994 to current year
Discharge, in cfs, Water Year October 1998 to September 1999
Day
Jul. 25

Peak flows of interest during Water Year 1999
Day
Peak Discharge (cfs)
Peak Discharge (cfs)
5,096*
Aug. 31
3,363

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
684
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
529
-----------------------------------------------------------------------------TOTAL
0
0
0
0
0
0
0
0
0
0
529
684
MEAN
0
0
0
0
0
0
0
0
0
0
17
23
MAX
0
0
0
0
0
0
0
0
0
0 3363
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 1049 1357
-----------------------------------------------------------------------------WTR YR 1999 TOTAL
1213 MEAN
3 MAX
3363 MIN
0 AC_FT
2406
* Gage failed to record during the event of July 25, 1999. The peak was estimated from high water
marks on the crest stage gage located at the gage site.
Gage separated from low flow channel during all of Water Year 1999.
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 and comparative flood flow frequency for this site.
Surface Water Streamflow Data
Page 50

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
5233
Sunset FRS
Drainage Area:
0.95 mi2 (from Wickenburge ADMS)
Period of Record: February 12, 1989 to current year
Discharge, in cfs, Water Year October 1998 to September 1999
Day
Jul. 15

Peak flows of interest during Water Year 1999
Peak Discharge (cfs)
Day
Peak Discharge (cfs)
22
Aug. 31
22

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
11
11
14
21
2
8
10
12
6
14
14
3
10
14
9
13
1
4
6
14
5
13
5
3
13
12
6
7
12
2
12
7
12
11
12
8
11
9
11
9
11
2
11
10
11
11
11
10
10
2
12
9
10
12
13
7
9
11
14
2
7
11
15
18
2
10
16
21
3
17
20
18
20
19
19
20
19
21
18
22
18
23
17
24
17
25
16
26
7
16
27
5
15
28
2
15
3
29
12
15
17
30
3
11
15
16
31
13
14
17
-----------------------------------------------------------------------------TOTAL
28
44
38
0
10
0
138
0
21
316
213
85
MEAN
1
1
1
0
0
0
5
0
1
10
7
3
MAX
13
13
11
0
10
0
15
0
11
22
22
22
MIN
0
0
0
0
0
0
0
0
0
0
0
0
AC_FT
55
87
74
0
21
0
274
0
41
627
422
168
-----------------------------------------------------------------------------WTR YR 1999 TOTAL
892 MEAN
2 MAX
22 MIN
0 AC_FT
1770
NOTE: Outflow data based on assumption that the outlet gate is fully open.
See also Pool Level and Storage Volume Data.
Surface Water Streamflow Data
Page 51

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
5248
Sunnycove FRS
Drainage Area:
0.98 mi2 (from Wickenburg ADMS)
Period of Record: November 1987 to current year
Discharge, in cfs, Water Year October 1998 to September 1999
Day
Jul. 15

Peak flows of interest during Water Year 1999
Peak Discharge (cfs)
Day
Peak Discharge (cfs)
33
Aug. 31
30

The gage was down from February 1 through February 5, 1999. An event on February 4, 1999 may
have been missed.
Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
25
2
22
3
19
4
5
6
7
8
9
10
11
12
13
14
15
23
16
24
17
9
18
19
20
21
22
23
24
25
26
27
28
29
30
4
31
8
-----------------------------------------------------------------------------TOTAL
4
0
0
0
0
0
0
0
0
56
8
66
MEAN
0
0
0
0
0
0
0
0
0
2
0
2
MAX
25
0
0
0
0
0
0
0
0
33
30
27
MIN
0
0
0
0
0
0
0
0
0
0
0
0
AC_FT
8
0
0
0
0
0
0
0
0
112
16
130
-----------------------------------------------------------------------------WTR YR 1999 TOTAL
134 MEAN
0 MAX
33 MIN
0 AC_FT
266
NOTE: Outflow data based on assumption that the outlet gate is fully open.
See also Pool Level and Storage Volume Data.
The gage was down from February 1 through February 5, 1999. An event on February 4, 1999 may
have been missed.
Surface Water Streamflow Data
Page 52

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
5283
Hassayampa R @ I-10
Drainage Area:
1,450 mi2 approximate
Period of Record: November 9, 1994 to current year
Discharge, in cfs, Water Year October 1998 to September 1999
No recorded flow during Water Year 1999
-----------------------------------------------------------------------------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 1999 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.

Flood Flow Frequency
(from R. W. Cruff analysis of 1995 based on shape of Hassayampa near Arlington relation)
Magnitude and Probability of Instantaneous Peak Flow
Discharge, in cfs, for Indicated Recurrence Interval
2-year
5-year
10-year
20-year
50-year
100-year
2,500
8,000
15,000
32,000
51,000
75,000

Surface Water Streamflow Data
Page 53

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
5308
Hassy @ Box Canyon
Drainage Area:
416 mi2
Period of Record: USGS: ID 09515500 – 1925, 1927, 1937, 1938 (annual peaks only)
WY1946 – WY1982 as a continuous site
FCDMC: November 1987 to current year
Revised Records: WY1996: WY1994-1995. WY1997: WY1996
Discharge, in cfs, Water Year October 1998 to September 1999
Peak flows of interest during Water Year 1999
Day
Peak Discharge (cfs)
Peak Discharge (cfs)
5,650
Sep. 23
3,630
621
Jul. 26
590
560
Jul. 25 & Sep. 11
530

Day
Aug. 31
Sep. 19
Jul. 15

Discharge (cfs)

H a s s a ya m p a R iv e r a t B o x C a n yo n - Au g . 3 1
1 5 -m in u te M a x im u m D is c h a r g e s
6000
5000
4000
3000
2000
1000
0
0 8 /3 1 /1 9 9 9
1 2 :0 0

0 8 /3 1 /1 9 9 9
1 8 :0 0

0 9 /0 1 /1 9 9 9
0 :0 0

0 9 /0 1 /1 9 9 9
6 :0 0

0 9 /0 1 /1 9 9 9
1 2 :0 0

Discharge (cfs)

H a s s a ya m p a R iv e r a t B o x C a n yo n - S e p . 2 3
1 5 - m in u te M a x im u m D is c h a r g e s

2-year
4,020

4000
3500
3000
2500
2000
1500
1000
500
0
0 9 /2 3 /1 9 9 9
1 2 :0 0

0 9 /2 3 /1 9 9 9
1 8 :0 0

0 9 /2 4 /1 9 9 9
0 :0 0

0 9 /2 4 /1 9 9 9
6 :0 0

0 9 /2 4 /1 9 9 9
1 2 :0 0

Flood Flow Frequency
(based on HECWRC implementation of Bulletin 17B, n = 46)
Magnitude and Probability of Instantaneous Peak Flow
Discharge, in cfs, for Indicated Recurrence Interval
5-year
10-year
20-year
50-year
12,200
21,200
32,900
53,000

100-year
72,200

NOTE: There is a frequent low flow below the gage. Approximately 180 cfs pass below the gage
before detection.
continued on next page

Surface Water Streamflow Data
Page 54

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
5308
Hassy @ Box Canyon
2
Drainage Area:
416 mi
Period of Record: USGS: ID 09515500 – 1925, 1927, 1937, 1938 (annual peaks only)
WY1946 – WY1982 as a continuous site
FCDMC: November 1987 to current year
Revised Records: WY1996: WY1994-1995. WY1997: WY1996
Discharge, in cfs, Water Year October 1998 to September 1999
Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
132
2
3
4
5
6
7
8
9
10
11
52
12
48
13
14
15
147
60
16
17
18
134
19
73
20
265
21
22
23
549
24
265
25
42
26
75
27
6
28
29
124
30
10
31
629
-----------------------------------------------------------------------------TOTAL
0
0
0
0
0
0
0
0
0
404
629 1578
MEAN
0
0
0
0
0
0
0
0
0
13
20
53
MAX
0
0
0
0
0
0
0
0
0
590 5650 3630
MIN
0
0
0
0
0
0
0
0
0
0
0
0
AC_FT
0
0
0
0
0
0
0
0
0
802 1248 3130
-----------------------------------------------------------------------------WTR YR 1999 TOTAL
2611 MEAN
7 MAX
5650 MIN
0 AC_FT
5179

Surface Water Streamflow Data
Page 55

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
5353
Hassy @ Wagoner Rd
Drainage Area:
78 mi2
Period of Record: September 26, 1991 to current year
Discharge, in cfs, Water Year October 1998 to September 1999
Day
Jul. 29

Peak flows of interest during Water Year 1999
Day
Peak Discharge (cfs)
Peak Discharge (cfs)
669
Jul. 15
298

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
8
11
13
13
14
12
15
13
13
13
35
27
2
9
10
14
12
14
11
17
15
19
16
35
18
3
12
9
13
13
14
12
16
17
16
16
34
19
4
8
10
14
12
14
13
16
15
16
15
37
14
5
9
10
13
13
14
12
14
13
14
14
37
21
6
8
11
15
13
15
12
15
14
14
18
46
17
7
9
12
13
14
15
15
15
13
15
18
21
13
8
9
14
14
14
15
12
15
14
13
17
21
13
9
8
12
15
13
14
12
13
14
11
18
14
15
10
9
11
13
13
15
12
13
14
10
19
14
13
11
8
15
12
14
13
12
14
14
13
23
23
15
12
8
12
12
14
13
11
16
14
14
20
19
12
13
10
9
12
14
12
10
14
15
13
20
21
13
14
9
10
13
13
13
11
14
15
15
24
16
1
15
10
10
16
13
12
13
12
14
15
87
14
16
10
11
13
14
14
15
14
14
14
18
11
17
10
11
12
14
13
14
15
13
14
8
9
18
10
11
13
14
13
12
14
13
14
9
11
19
10
10
15
14
13
11
12
13
13
9
14
20
10
9
15
16
13
12
14
13
14
6
15
21
14
10
13
16
14
11
15
14
14
7
14
22
12
10
14
13
13
12
16
14
13
7
13
23
11
10
12
13
11
12
17
14
13
8
10
1
24
11
11
9
15
12
12
15
13
12
9
13
5
25
16
10
9
17
13
12
14
11
13
19
20
26
14
11
9
17
13
13
12
11
13
17
11
27
10
12
9
16
12
12
15
12
13
38
12
28
9
15
9
18
11
12
15
11
13
32
15
29
11
14
9
15
12
14
13
12
182
14
30
14
12
9
14
12
16
12
14
222
16
31
11
9
14
13
11
117
26
-----------------------------------------------------------------------------TOTAL
317
332
383
439
369
377
437
417
409 1047
605
218
MEAN
10
11
12
14
13
12
15
13
14
34
20
7
MAX
25
22
41
41
32
29
39
32
34
669
87
47
MIN
1
0
2
2
2
2
1
1
1
0
0
0
AC_FT
629
658
759
870
731
748
867
827
811 2077 1201
433
-----------------------------------------------------------------------------WTR YR 1999 TOTAL
5349 MEAN
15 MAX
669 MIN
0 AC_FT 10610
NOTE: The sonar sensor device at this location is influenced by temperature. Therefore, the daily
values may be overestimated. Typically, base flow at this location is 1 – 10 cfs.

2-year
595

Flood Flow Frequency
(based on HECWRC implementation of Bulletin 17B, n = 12)
Magnitude and Probability of Instantaneous Peak Flow
Discharge, in cfs, for Indicated Recurrence Interval
5-year
10-year
20-year
50-year
1,590
2,580
3,780
5,730

Surface Water Streamflow Data
Page 56

100-year
7,490

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Drainage Area:

Name:
5403
Agua Fria @ Buckeye
2,241 mi2 , 1,459 mi2 controlled by New Waddell Dam, 191 mi2 by
Cave Buttes Dam, 90 mi2 by Adobe Dam, 164 mi2 by New River Dam,
and 247 mi2 by McMicken Dam.
Period of Record: October 12, 1988 to current year
Discharge, in cfs, Water Year October 1998 to September 1999
Day
Aug. 27

Peak flows of interest during Water Year 1999
Day
Peak Discharge (cfs)
Peak Discharge (cfs)
1,477*
Jul. 15
328

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
34
16
17
18
19
20
21
22
23
24
25
26
27
132
28
81
29
30
31
-----------------------------------------------------------------------------TOTAL
0
0
0
0
0
0
0
0
0
35
213
0
MEAN
0
0
0
0
0
0
0
0
0
1
7
0
MAX
0
0
0
0
0
0
12
0
0
328 1477
0
MIN
0
0
0
0
0
0
0
0
0
0
0
0
AC_FT
0
0
0
0
0
0
0
0
0
69
422
0
-----------------------------------------------------------------------------WTR YR 1999 TOTAL
248 MEAN
1 MAX
1477 MIN
0 AC_FT
491
NOTE: Severe drop at boulders 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.
*Flow originated from I-10 Papago Drain which had an estimated peak discharge of 4,400 cfs.

Surface Water Streamflow Data
Page 57

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
5408
Colter @ El Mirage
Drainage Area:
3.48 mi2
Period of Record: June 29, 1994 to current year
Discharge, in cfs, Water Year October 1998 to September 1999

Day
Jul. 15

Peak flows of interest during Water Year 1999
(flows greater than 30 cfs)
Peak Discharge (cfs)
37

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
2
4
3
4
5
6
7
8
9
10
11
2
12
1
13
14
15
12
16
3
17
18
19
20
21
22
23
24
25
26
5
27
28
29
30
31
-----------------------------------------------------------------------------TOTAL
5
0
0
0
0
0
4
0
0
15
0
3
MEAN
0
0
0
0
0
0
0
0
0
0
0
0
MAX
22
0
0
0
0
0
22
0
0
37
0
16
MIN
0
0
0
0
0
0
0
0
0
0
0
0
AC_FT
10
0
0
0
0
0
9
0
0
30
0
6
-----------------------------------------------------------------------------WTR YR 1999 TOTAL
27 MEAN
0 MAX
37 MIN
0 AC_FT
54
Flood Flow Frequency
(HEC-1 for Colter Channel Design Analysis)
Magnitude and Probability of Instantaneous Peak Flow
Discharge, in cfs, for Indicated Recurrence Interval
100-year
1,040

Surface Water Streamflow Data
Page 58

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
5413
Dysart Drain @ LAFB
Drainage Area:
52 mi2
Period of Record: August 22, 1996 to current year
Discharge, in cfs, Water Year October 1998 to September 1999
Day
Jul. 15

Peak flows of interest during Water Year 1999
Day
Peak Discharge (cfs)
Peak Discharge (cfs)
73
Sep. 19
22

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
2
4
3
4
5
6
7
8
9
10
11
12
13
14
1
15
13
16
17
18
19
3
20
2
21
1
22
23
24
25
26
27
28
29
30
31
-----------------------------------------------------------------------------TOTAL
0
0
0
0
0
0
4
0
0
13
0
7
MEAN
0
0
0
0
0
0
0
0
0
0
0
0
MAX
6
0
0
0
0
0
13
0
0
73
0
22
MIN
0
0
0
0
0
0
0
0
0
0
0
0
AC_FT
0
0
0
0
0
0
8
0
0
26
0
14
-----------------------------------------------------------------------------WTR YR 1999 TOTAL
24 MEAN
0 MAX
73 MIN
0 AC_FT
47
NOTE: Many days of positive mean daily flow due to irrigation tailwater.

Surface Water Streamflow Data
Page 59

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
5418
White Tanks #3 FRS
Drainage Area:
20.5 mi2
Period of Record: November 1987 to current year
Discharge, in cfs, Water Year October 1998 to September 1999
Day
Apr. 2

One recorded flow during Water Year 1999
Peak Discharge (cfs)
68*

-----------------------------------------------------------------------------TOTAL
0
0
0
0
0
0
9
0
0
0
0
0
MEAN
0
0
0
0
0
0
0
0
0
0
0
0
MAX
0
0
0
0
0
0
68
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
17
0
0
0
0
0
-----------------------------------------------------------------------------WTR YR 1999 TOTAL
9 MEAN
0 MAX
68 MIN
0 AC_FT
17
*Flow assumes gated outlet open. However it is usually closed.
See also Pool Level and Storage Volume Data.

Surface Water Streamflow Data
Page 60

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
5423
Dysart Chnl@ El Mirage Road
Drainage Area:
58.2 mi2
Period of Record: June 23, 1994 to December 26, 1995
March 7, 1997 to current year*
Discharge, in cfs, Water Year October 1998 to September 1999
Day
Sep. 19

Peak flows of interest during Water Year 1999
Day
Peak Discharge (cfs)
Peak Discharge (cfs)
65
Jul. 15
39

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
2
9
3
1
4
5
6
7
8
9
10
11
12
13
14
15
8
16
1
17
18
19
5
20
9
21
1
22
23
1
24
25
26
2
27
28
29
30
31
-----------------------------------------------------------------------------TOTAL
2
0
0
0
0
0
11
0
0
9
0
16
MEAN
0
0
0
0
0
0
0
0
0
0
0
1
MAX
13
0
0
0
0
0
24
0
0
39
0
65
MIN
0
0
0
0
0
0
0
0
0
0
0
0
AC_FT
4
0
0
0
0
0
21
0
0
17
0
32
-----------------------------------------------------------------------------WTR YR 1999 TOTAL
38 MEAN
0 MAX
65 MIN
0 AC_FT
75
* Gage reinstalled March 7, 1997 on new Dysart Channel. Gage moved from approximately 1000 feet
upstream of El Mirage Road.
Flood Flow Frequency
(HEC-1 for White Tanks ADMS modified for Dysart Channel Design Analysis)
Magnitude and Probability of Instantaneous Peak Flow
Discharge, in cfs, for Indicated Recurrence Interval
100-year
4,020
Surface Water Streamflow Data
Page 61

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
5438
McMicken Floodway
Drainage Area:
305 mi2 of which 247 mi2 is controlled by McMicken Dam
Period of Record: September 3, 1992 to current year
Discharge, in cfs, Water Year October 1998 to September 1999
Day
Jul. 15
Sep. 19

Peak flows of interest during Water Year 1999
Day
Peak Discharge (cfs)
Peak Discharge (cfs)
98
Jul. 14
92
76

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
2
3
3
3
4
5
6
7
8
9
10
11
12
13
14
19
15
24
16
17
18
19
3
20
12
21
22
23
24
25
26
27
28
29
30
31
-----------------------------------------------------------------------------TOTAL
0
0
3
0
0
0
3
0
0
43
0
15
MEAN
0
0
0
0
0
0
0
0
0
1
0
1
MAX
0
0
6
0
6
0
6
0
0
98
0
76
MIN
0
0
0
0
0
0
0
0
0
0
0
0
AC_FT
0
0
6
0
1
0
5
0
0
86
0
30
-----------------------------------------------------------------------------WTR YR 1999 TOTAL
64 MEAN
0 MAX
98 MIN
0 AC_FT
128
NOTE: Flows during Water Year 1999 generated below McMicken Dam. No outflow occurred from
McMicken Dam into the floodway during Water Year 1999. See also gage 5448.

10-year
2,610
Surface Water Streamflow Data
Page 62

Flood Flow Frequency
(FEMA 9/95, “at confluence with McMicken Dam”)
Magnitude and Probability of Instantaneous Peak Flow
Discharge, in cfs, for Indicated Recurrence Interval
50-year
4,280

100-year
5,090

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
5448
McMicken Dam
Drainage Area:
247 mi2
Period of Record: November 1987 to current year
Discharge, in cfs, Water Year October 1998 to September 1999
No recorded flows during Water Year 1999
-----------------------------------------------------------------------------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 1999 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 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
USGS Gage:
Drainage Area:

Name:
5503
Agua Fria @ Grand
09513650 (Agua Fria at El Mirage)
1,628 mi2 of which 1,433 mi2 is controlled by New Waddell Dam

See USGS Water-Data Report AZ-99-1 for data for this site.

Surface Water Streamflow Data
Page 64

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Drainage Area:

Name:
5508
NewRiver @ Glendale
600 mi2, of which 191 mi2 is controlled by Cave Buttes Dam, 164 mi2
by New River Dam, and 90 mi2 by Adobe Dam.
Period of Record: FCDMC: October 1, 1998 to current year*
USGS: through WY1998 (09513910)
Discharge, in cfs, Water Year October 1998 to September 1999
Peak flows of interest during Water Year 1999
Day
Peak Discharge (cfs)
Peak Discharge (cfs)
1,525
Sep. 25
664

Day
Jul. 15

* The USGS discontinued maintenance of this location at the end of Water Year 1998. The FCDMC
assumed maintenance as of the beginning of Water Year 1999.

Discharge (cfs)

New River at Glendale Ave. - July 15
15-minute Maximum Discharges
2000
1500
1000
500
0
07/15/1999
0:00

07/15/1999
8:00

07/15/1999
16:00

07/16/1999
0:00

07/16/1999
8:00

continued on next page

Surface Water Streamflow Data
Page 65

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Drainage Area:

Name:
5508
NewRiver @ Glendale
600 mi2, of which 191 mi2 is controlled by Cave Buttes Dam, 164 mi2
by New River Dam, and 90 mi2 by Adobe Dam.
Period of Record: FCDMC: October 1, 1998 to current year*
USGS: through WY1998 (09513910)
Discharge, in cfs, Water Year October 1998 to September 1999
Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
2
120
3
141
4
4
5
6
6
7
68
8
163
9
10
10
11
12
13
14
15
405
16
277
17
106
18
10
19
8
20
33
90
21
10
22
23
24
25
26
27
28
29
30
31
-----------------------------------------------------------------------------TOTAL
0
0
0
0
0
0
264
0
0 1086
0
98
MEAN
0
0
0
0
0
0
9
0
0
35
0
3
MAX
0
0
0
0
0
0
179
0
0 1525
0
664
MIN
0
0
0
0
0
0
0
0
0
0
0
0
AC_FT
0
0
0
0
0
0
524
0
0 2154
0
195
-----------------------------------------------------------------------------WTR YR 1999 TOTAL
1449 MEAN
4 MAX
1525 MIN
0 AC_FT
2873
* The USGS discontinued maintenance of this location at the end of Water Year 1998. The FCDMC
assumed maintenance as of the beginning of Water Year 1999.

Surface Water Streamflow Data
Page 66

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
5523
ACDC @ 67th Ave.
Drainage Area:
86 mi2 at confluence with Skunk Creek
Period of Record: June 7, 1990 to current year
Revised Records: WY1996: WY1994-1995
Discharge, in cfs, Water Year October 1998 to September 1999
Day
Jul. 14
Sep. 20

Peak flows of interest during Water Year 1999
Day
Peak Discharge (cfs)
Peak Discharge (cfs)
650
Jul. 7
540
399

Discharge (cfs)

ACDC at 67th Ave - July 14
15-minute Maximum Discharges

2-year
1,900

700
600
500
400
300
200
100
0
07/14/1999 07/14/1999 07/15/1999 07/15/1999 07/16/1999 07/16/1999
12:00
21:00
6:00
15:00
0:00
9:00

Flood Flow Frequency
(computed from USACE design information)
Magnitude and Probability of Instantaneous Peak Flow
Discharge, in cfs, for Indicated Recurrence Interval
5-year
10-year
20-year
50-year
4,500
7,700
13,500
20,600

100-year
29,000

continued on next page

Surface Water Streamflow Data
Page 67

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
5523
ACDC @ 67th Ave.
Drainage Area:
86 mi2 at confluence with Skunk Creek
Period of Record: June 7, 1990 to current year
Revised Records: WY1996: WY1994-1995
Discharge, in cfs, Water Year October 1998 to September 1999
Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
35
2
7
14
85
15
3
13
20
4
8
5
3
3
6
5
14
38
29
7
1
12
42
5
8
2
2
105
4
9
6
10
3
10
3
12
11
3
18
1
12
1
2
13
13
11
1
14
4
105
16
15
16
3
261
19
16
8
2
3
2
117
1
17
1
3
83
18
3
25
16
19
1
3
25
10
20
20
2
32
168
21
1
11
11
22
8
4
23
10
31
24
6
3
25
18
11
26
58
8
27
15
7
1
28
1
4
5
114
29
12
15
14
30
12
2
2
31
91
-----------------------------------------------------------------------------TOTAL
197
65
68
2
19
5
150
0
16
935
231
288
MEAN
6
2
2
0
1
0
5
0
1
30
7
10
MAX
143
75
81
14
55
11
156
0
59
650
196
399
MIN
0
0
0
0
0
0
0
0
0
0
0
0
AC_FT
390
128
134
4
38
9
297
0
31 1854
458
571
-----------------------------------------------------------------------------WTR YR 1999 TOTAL
1974 MEAN
5 MAX
650 MIN
0 AC_FT
3916

Surface Water Streamflow Data
Page 68

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
5538
Adobe Dam Outlet
Drainage Area:
89.6 mi2
Period of Record: November 1987 to current year
Discharge, in cfs, Water Year October 1998 to September 1999
Day
Jul. 15

Peak flows of interest during Water Year 1999
Peak Discharge (cfs)
508

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
2
3
4
5
6
7
8
9
10
11
12
13
14
47
15
279
16
63
17
2
18
19
20
21
22
23
24
25
26
27
28
29
30
31
-----------------------------------------------------------------------------TOTAL
0
0
0
0
0
0
0
0
0
391
0
0
MEAN
0
0
0
0
0
0
0
0
0
13
0
0
MAX
0
0
0
0
0
0
0
0
0
508
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
776
0
0
-----------------------------------------------------------------------------WTR YR 1999 TOTAL
391 MEAN
1 MAX
508 MIN
0 AC_FT
776
See also Pool Level and Storage Volume Data.

Surface Water Streamflow Data
Page 69

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
5543
Scatter Wash
Drainage Area:
18.1 mi2
Period of Record: September 18, 1996 to current year
Discharge, in cfs, Water Year October 1998 to September 1999
Day
Aug. 10
Oct. 26

Peak flows of interest during Water Year 1999
Day
Peak Discharge (cfs)
Peak Discharge (cfs)
330
Jul. 15
254
231
Jul. 6
208

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
2
7
5
3
4
5
2
6
11
10
1
7
5
8
1
9
10
21
11
12
13
14
6
11
15
10
41
16
17
18
19
9
20
21
22
23
24
25
10
26
32
27
11
28
29
30
31
-----------------------------------------------------------------------------TOTAL
43
1
28
1
1
1
6
1
1
63
36
21
MEAN
1
0
1
0
0
0
0
0
0
2
1
1
MAX
231
0
119
0
0
0
15
0
0
254
330
166
MIN
0
0
0
0
0
0
0
0
0
0
0
0
AC_FT
85
2
56
2
2
2
11
2
2
124
71
41
-----------------------------------------------------------------------------WTR YR 1999 TOTAL
202 MEAN
1 MAX
330 MIN
0 AC_FT
401
Flood Flow Frequency
(Channel Design Analysis)
Magnitude and Probability of Instantaneous Peak Flow
Discharge, in cfs, for Indicated Recurrence Interval
100-year
6,100

Surface Water Streamflow Data
Page 70

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
USGS Gage:
Drainage Area:

Name:
5568
Skunk Creek @ I-17
09512860 – Skunk Creek near Phoenix, Arizona
64.9 mi2

See USGS Water-Data Report AZ-99-1 for data for this site.

2-year
1,070

Flood Flow Frequency
(based on HECWRC implementation of Bulletin 17B, n = 38,
station skew used based on examination of observed data plots)
Magnitude and Probability of Instantaneous Peak Flow
Discharge, in cfs, for Indicated Recurrence Interval
5-year
10-year
20-year
50-year
3,960
7,100
11,000
17,300

Surface Water Streamflow Data
Page 71

100-year
22,800

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
5583
Skunk Creek near New River
Drainage Area:
4 mi2 (approximate)
Period of Record: June 21, 1995 to current year
Discharge, in cfs, Water Year October 1998 to September 1999
Peak flows of interest during Water Year 1999
Day
Peak Discharge (cfs)
Peak Discharge (cfs)
949
Jul. 7
135
63

Day
Jul. 15
Sep. 23

Skunk Creek nr New River
15-m inute Maxim um Discharges

Discharge (cfs)

1000
800
600
400
200
0
07/15/1999 3:00

07/15/1999 5:00

07/15/1999 7:00

07/15/1999 9:00

Flood Flow Frequency
(source: FEMA Sept. 1995)
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

continued on next page
Surface Water Streamflow Data
Page 72

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
5583
Skunk Creek near New River
Drainage Area:
4 mi2 (approximate)
Period of Record: June 21, 1995 to current year
Discharge, in cfs, Water Year October 1998 to September 1999
Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
2
3
4
5
6
1
7
8
8
3
9
10
11
12
13
14
15
47
16
2
17
18
19
20
21
22
23
5
24
25
26
27
28
29
30
31
-----------------------------------------------------------------------------TOTAL
0
0
0
0
0
0
0
0
0
63
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
949
0
63
MIN
0
0
0
0
0
0
0
0
0
0
0
0
AC_FT
0
0
0
0
0
0
0
0
0
124
0
10
-----------------------------------------------------------------------------WTR YR 1999 TOTAL
67 MEAN
0 MAX
949 MIN
0 AC_FT
134

Surface Water Streamflow Data
Page 73

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
5598
New River @ Bell
Drainage Area:
185 mi2, of which 164 mi2 are controlled by New River Dam
Period of Record: April 4, 1990 to current year*
Revised Records: WY1996, WY1995
Discharge, in cfs, Water Year October 1998 to September 1999
Day
Jul. 15

Peak flows of interest during Water Year 1999
Day
Peak Discharge (cfs)
Peak Discharge (cfs)
155

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
2
3
4
5
6
4
7
8
9
10
11
12
13
14
15
15
16
95
17
16
18
19
20
21
22
23
24
25
26
27
28
29
30
31
-----------------------------------------------------------------------------TOTAL
0
0
0
0
0
0
0
0
0
129
0
0
MEAN
0
0
0
0
0
0
0
0
0
4
0
0
MAX
0
0
0
0
0
0
0
0
0
155
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
257
0
0
-----------------------------------------------------------------------------WTR YR 1999 TOTAL
129 MEAN
0 MAX
155 MIN
0 AC_FT
257
* USGS period of record: Water Years 1963, 1965-67 (annual maximums only,) 1968-84, June 1990 – Sept. 1993.
Also, FCDMC gage out of service from Oct. 1, 1993 to May 12, 1994 during construction of new bridge.
NOTE: Most flows represent outflow from New River Dam.

2-year
1,920

Flood Flow Frequency
(based on HEC-1 analysis by R. W. Cruff, 1995)
Magnitude and Probability of Instantaneous Peak Flow
Discharge, in cfs, for indicated Recurrence Interval
5-year
10-year
25-year
50-year
6,510
11,700
21,200
30,500

Surface Water Streamflow Data
Page 74

100-year
41,800

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
5613
New River Outlet
2
Drainage Area:
164 mi
Period of Record: November 1987 to current year
Discharge, in cfs, Water Year October 1998 to September 1999
Day
Jul. 15

Peak flows of interest during Water Year 1999
Peak Discharge (cfs)
198

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
2
13
1
14
16
15
154
16
75
17
6
18
2
19
1
20
21
22
23
24
25
26
27
28
29
30
31
-----------------------------------------------------------------------------TOTAL
0
0
0
0
0
0
0
0
0
253
0
3
MEAN
0
0
0
0
0
0
0
0
0
8
0
0
MAX
0
0
0
0
0
0
0
0
0
198
0
4
MIN
0
0
0
0
0
0
0
0
0
0
0
0
AC_FT
0
0
0
0
0
0
0
0
0
502
0
7
-----------------------------------------------------------------------------WTR YR 1999 TOTAL
256 MEAN
1 MAX
198 MIN
0 AC_FT
508
See also Pool Level and Storage Volume Data.

Surface Water Streamflow Data
Page 75

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
5968
StoneRidge Dam
Drainage Area:
0.86 mi2
Period of Record: December 11, 1996 to current date
Discharge, in cfs, Water Year October 1998 to September 1999
Day
Aug. 31

Peak flows of interest during Water Year 1999
Day
Peak Discharge (cfs)
Peak Discharge (cfs)
56
Jul. 23
42

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
28
2
12
3
4
4
5
6
7
8
9
10
11
12
13
14
15
2
16
17
18
19
20
21
22
23
1
24
25
1
26
1
27
28
29
30
31
12
-----------------------------------------------------------------------------TOTAL
2
0
0
0
0
0
4
0
0
3
12
41
MEAN
0
0
0
0
0
0
0
0
0
0
0
1
MAX
18
0
0
0
0
0
26
0
0
42
56
29
MIN
0
0
0
0
0
0
0
0
0
0
0
0
AC_FT
4
0
0
0
0
0
9
0
0
7
23
81
-----------------------------------------------------------------------------WTR YR 1999 TOTAL
62 MEAN
0 MAX
56 MIN
0 AC_FT
123
See also Pool Level and Storage Volume Data.

Surface Water Streamflow Data
Page 76

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
5973
SunRidge Canyon Dam
Drainage Area:
1.6 mi2
Period of Record: February 4, 1997 to current year
Discharge, in cfs, Water Year October 1998 to September 1999
Peak flows of interest during Water Year 1999*
Peak Discharge (cfs)
140
Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
5
2
3
2
4
5
6
7
2
8
5
9
2
10
1
11
2
12
10
13
6
14
15
16
17
18
19
20
21
22
23
5
24
18
25
1
26
6
2
27
8
28
19
29
9
30
4
6
31
6
9
6
-----------------------------------------------------------------------------TOTAL
16
0
0
0
0
0
0
0
0
79
41
0
MEAN
1
0
0
0
0
0
0
0
0
3
1
0
MAX
140
0
0
0
0
0
0
0
0
26
29
0
MIN
0
0
0
0
0
0
0
0
0
0
0
0
AC_FT
32
0
0
0
0
0
0
0
0
156
81
0
-----------------------------------------------------------------------------WTR YR 1999 TOTAL
136 MEAN
0 MAX
140 MIN
0 AC_FT
269

Day
Oct. 26

* There were several flows in July 1999 of approximately 20 – 25 cfs.
See also Pool Level and Storage Volume Data.
Surface Water Streamflow Data
Page 77

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Drainage Area:

Name:
5978
GoldenEaglePark Dam
7.13 mi2 of which 2.02 mi2, 2.13 mi2, and 1.6 mi2 are controlled by
Aspen, North Heights, and Sunridge Canyon Dams respectively.
Period of Record: December 12, 1996 to current year
Discharge, in cfs, Water Year October 1998 to September 1999

Day
Oct. 26

Peak flows of interest during Water Year 1999
Day
Peak Discharge (cfs)
Peak Discharge (cfs)
460
Aug. 31
167

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
4
4
2
2
19
3
14
4
16
5
1
6
2
7
8
9
10
11
12
13
14
10
15
14
1
16
5
17
18
19
3
20
1
21
22
9
23
17
24
14
25
6
13
26
35
15
27
12
4
28
1
8
13
29
12
30
11
31
18
-----------------------------------------------------------------------------TOTAL
40
1
3
0
0
0
54
0
0
116
59
9
MEAN
1
0
0
0
0
0
2
0
0
4
2
0
MAX
460
20
19
0
0
0
35
0
0
80
167
42
MIN
0
0
0
0
0
0
0
0
0
0
0
0
AC_FT
80
3
7
0
0
0
108
0
0
231
116
17
-----------------------------------------------------------------------------WTR YR 1999 TOTAL
283 MEAN
1 MAX
460 MIN
0 AC_FT
562
See also Pool Level and Storage Volume Data.
Surface Water Streamflow Data
Page 78

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
5983
North Heights Dam
Drainage Area:
2.13 mi2
Period of Record: October 11, 1996 to current year
Discharge, in cfs, Water Year October 1998 to September 1999
Day
Oct. 26

Peak flows of interest during Water Year 1999
Day
Peak Discharge (cfs)
Peak Discharge (cfs)
192
Jul. 22
46

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
2
3
4
5
6
7
8
9
10
1
11
12
13
14
15
16
17
18
19
20
21
22
3
23
24
25
1
26
10
27
28
29
30
31
-----------------------------------------------------------------------------TOTAL
11
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
192
0
0
0
0
0
0
0
0
46
0
0
MIN
0
0
0
0
0
0
0
0
0
0
0
0
AC_FT
22
0
0
0
0
0
0
0
0
9
0
0
-----------------------------------------------------------------------------WTR YR 1999 TOTAL
15 MEAN
0 MAX
192 MIN
0 AC_FT
31
See also Pool Level and Storage Volume Data.

Surface Water Streamflow Data
Page 79

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
5988
Aspen Dam
Drainage Area:
2.02 mi2
Period of Record: January 2, 1997 to current year
Discharge, in cfs, Water Year October 1998 to September 1999
Day
Oct. 26

Peak flows of interest during Water Year 1999
Day
Peak Discharge (cfs)
Peak Discharge (cfs)
58
Aug. 31
19

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
2
3
4
5
6
7
8
9
10
1
11
12
13
14
15
16
17
18
19
20
21
22
1
23
24
25
26
4
27
28
29
30
31
1
-----------------------------------------------------------------------------TOTAL
4
0
0
0
0
0
0
0
0
2
1
0
MEAN
0
0
0
0
0
0
0
0
0
0
0
0
MAX
58
0
0
0
0
0
0
0
0
18
19
0
MIN
0
0
0
0
0
0
0
0
0
0
0
0
AC_FT
8
0
0
0
0
0
0
0
0
4
1
0
-----------------------------------------------------------------------------WTR YR 1999 TOTAL
7 MEAN
0 MAX
58 MIN
0 AC_FT
13
See also Pool Level and Storage Volume Data.

Surface Water Streamflow Data
Page 80

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
5993
Hesperus Dam
Drainage Area:
2.91 mi2
Period of Record: December 18, 1996 to current year
Discharge, in cfs, Water Year October 1998 to September 1999
Day
Oct. 26

Peak flows of interest during Water Year 1999
Day
Peak Discharge (cfs)
Peak Discharge (cfs)
71
Aug. 31
27

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
2
27
28
29
30
31
1
-----------------------------------------------------------------------------TOTAL
2
0
0
0
0
0
0
0
0
0
1
0
MEAN
0
0
0
0
0
0
0
0
0
0
0
0
MAX
71
0
0
0
0
0
0
0
0
16
27
12
MIN
0
0
0
0
0
0
0
0
0
0
0
0
AC_FT
5
0
0
0
0
0
0
0
0
0
1
0
-----------------------------------------------------------------------------WTR YR 1999 TOTAL
3 MEAN
0 MAX
71 MIN
0 AC_FT
6
See also Pool Level and Storage Volume Data.

Surface Water Streamflow Data
Page 81

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
6503
Guadalupe FRS
Drainage Area:
1.87 mi2
Period of Record: June 29, 1989 to current year
Discharge, in cfs, Water Year October 1998 to September 1999
No outflow during Water Year 1999
-----------------------------------------------------------------------------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 1999 TOTAL
0 MEAN
0 MAX
0 MIN
0 AC_FT
0
Gated outlet assumed closed.
See also Pool Level and Storage Volume Data.

Surface Water Streamflow Data
Page 82

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
6563
South Mountain Fan
Drainage Area:
1.98 mi2
Period of Record: June 9, 1993 to current year
Revised Records: WY1996: WY1995
Discharge, in cfs, Water Year October 1998 to September 1999
Day
Jul. 7

Peak flows of interest during Water Year 1999
Day
Peak Discharge (cfs)
Peak Discharge (cfs)
749*
Jul. 14
205

Discharge (cfs)

South Mountain Fan - July 7
15-minute Maximum Discharges
800
700
600
500
400
300
200
100
0
07/07/1999 18:00

07/07/1999 20:00

07/07/1999 22:00

07/08/1999 0:00

* Highest discharge of record.

2-year
300

Flood Flow Frequency
(based on HEC-1 analysis, 1997)
Magnitude and Probability of Instantaneous Peak Flow
Discharge, in cfs, for indicated Recurrence Interval
5-year
10-year
25-year
50-year
650
990
1,500
2,000

100-year
2,400

continued on next page

Surface Water Streamflow Data
Page 83

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
6563
South Mountain Fan
Drainage Area:
1.98 mi2
Period of Record: June 9, 1993 to current year
Revised Records: WY1996: WY1995
Discharge, in cfs, Water Year October 1998 to September 1999
Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
2
3
4
5
6
7
13
8
9
10
11
12
13
14
4
15
16
17
18
19
20
21
22
23
24
25
26
27
28
1
29
30
31
-----------------------------------------------------------------------------TOTAL
0
0
0
0
0
0
0
0
0
18
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
749
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
36
0
0
-----------------------------------------------------------------------------WTR YR 1999 TOTAL
18 MEAN
0 MAX
749 MIN
0 AC_FT
36

Surface Water Streamflow Data
Page 84

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
6573
EMF @ Broadway
Drainage Area:
15.4 mi2
Period of Record: August 10, 1989 to current year
Discharge, in cfs, Water Year October 1998 to September 1999
Day
Sep. 14

Peak flows of interest during Water Year 1999
Peak Discharge (cfs)
127

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
2
1
3
4
5
6
7
8
9
10
11
12
13
14
12
15
13
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
-----------------------------------------------------------------------------TOTAL
0
0
0
0
0
0
1
0
0
0
0
25
MEAN
0
0
0
0
0
0
0
0
0
0
0
1
MAX
0
0
0
0
0
0
4
0
0
0
0
127
MIN
0
0
0
0
0
0
0
0
0
0
0
0
AC_FT
0
0
0
0
0
0
2
0
0
0
0
50
-----------------------------------------------------------------------------WTR YR 1999 TOTAL
26 MEAN
0 MAX
127 MIN
0 AC_FT
52

Surface Water Streamflow Data
Page 85

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
6583
EMF @ Queen Creek
Drainage Area:
104.6 mi2
Period of Record: January 18, 1989 to current year
Discharge, in cfs, Water Year October 1998 to September 1999
Day
Aug. 31

Peak flows of interest during Water Year 1999
Day
Peak Discharge (cfs)
Peak Discharge (cfs)
879
Sep. 20
142

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
104
2
16
3
6
4
3
5
1
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
67
21
37
22
14
23
9
24
26
3
25
5
26
27
28
29
30
31
160
-----------------------------------------------------------------------------TOTAL
0
0
0
0
0
0
0
0
0
31
160
260
MEAN
0
0
0
0
0
0
0
0
0
1
5
9
MAX
0
0
0
0
0
0
0
0
0
52
879
235
MIN
0
0
0
0
0
0
0
0
0
0
0
0
AC_FT
0
0
0
0
0
0
0
0
0
61
318
516
-----------------------------------------------------------------------------WTR YR 1999 TOTAL
451 MEAN
1 MAX
879 MIN
0 AC_FT
895

Surface Water Streamflow Data
Page 86

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
6598
EMF @ Arizona Ave.
Drainage Area:
214 mi2 (at Hunt Highway, 8 miles upstream.)
Period of Record: February 10, 1989 to current year
Discharge, in cfs, Water Year October 1998 to September 1999
Day
Sep. 1

Peak flows of interest during Water Year 1999
Day
Peak Discharge (cfs)
Peak Discharge (cfs)
93
Sep. 24
45

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
32
2
53
3
46
4
35
5
21
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
8
24
42
25
31
26
2
27
28
29
30
31
-----------------------------------------------------------------------------TOTAL
0
0
0
0
0
0
0
0
0
0
0
270
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
93
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
536
-----------------------------------------------------------------------------WTR YR 1999 TOTAL
270 MEAN
1 MAX
93 MIN
0 AC_FT
536

Surface Water Streamflow Data
Page 87

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Drainage Area:

Name:
6603
Guadalupe Channel
13.7 mi2 (discharge under US 60 limited to 1,800 cfs; drainage area
downstream of US 60 about 1.5 mi2 (1.2 mi2 east of Sossaman Road
and south of US 60.)
Period of Record: August 7, 1998 to current year
Discharge, in cfs, Water Year October 1998 to September 1999

Day
Sep. 19
Aug. 31

Peak flows of interest during Water Year 1999
Day
Peak Discharge (cfs)
Peak Discharge (cfs)
184
Jul. 15
115
115

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
12
2
3
2
4
5
6
9
12
7
5
8
9
10
11
12
13
14
15
6
16
17
18
19
23
20
21
22
23
24
25
26
27
28
29
30
31
16
-----------------------------------------------------------------------------TOTAL
0
0
16
0
0
0
0
0
0
18
16
35
MEAN
0
0
1
0
0
0
0
0
0
1
1
1
MAX
0
0
15
0
0
0
0
0
0
115
115
184
MIN
0
0
0
0
0
0
0
0
0
0
0
0
AC_FT
0
0
33
0
0
0
0
0
0
36
32
69
-----------------------------------------------------------------------------WTR YR 1999 TOTAL
85 MEAN
0 MAX
184 MIN
0 AC_FT
169
NOTE: About 50 cfs passes before detection by the instrument.
Flood Flow Frequency (from design sheets)
Magnitude and Probability of Instantaneous Peak Flow
Discharge, in cfs, for Indicated Recurrence Interval
100-year
2,400

Surface Water Streamflow Data
Page 88

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
6628
Signal Butte FRS
Drainage Area:
16.4 mi2 not including area from Apache Junction FRS
Period of Record: November 10, 1987 to current year
Discharge, in cfs, Water Year October 1998 to September 1999
No recorded flows during Water Year 1999
-----------------------------------------------------------------------------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 1999 TOTAL
0 MEAN
0 MAX
0 MIN
0 AC_FT
0
See also Pool Level and Storage Volume Data.

Surface Water Streamflow Data
Page 89

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
6673
Apache Jct. FRS
Drainage Area:
5.8 mi2
Period of Record: November 1987 to current year
Discharge, in cfs, Water Year October 1998 to September 1999
Day
Jul. 23

Peak flows of interest during Water Year 1999
Day
Peak Discharge (cfs)
Peak Discharge (cfs)
29
Oct. 30
10

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
7
24
18
25
26
27
28
29
30
1
31
-----------------------------------------------------------------------------TOTAL
1
0
0
0
0
0
0
0
0
25
0
0
MEAN
0
0
0
0
0
0
0
0
0
1
0
0
MAX
10
0
0
0
0
0
0
0
0
29
0
0
MIN
0
0
0
0
0
0
0
0
0
0
0
0
AC_FT
2
0
0
0
0
0
0
0
0
50
0
0
-----------------------------------------------------------------------------WTR YR 1999 TOTAL
26 MEAN
0 MAX
29 MIN
0 AC_FT
52
See also Pool Level and Storage Volume Data.

Surface Water Streamflow Data
Page 90

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
6683
Powerline FRS
Drainage Area:
49.9 mi2
Period of Record: December 3, 1992 to current year
Discharge, in cfs, Water Year October 1998 to September 1999
Day
Jul. 23

Peak flows of interest during Water Year 1999
Peak Discharge (cfs)
7

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
1
24
6
25
4
26
1
27
28
29
30
31
-----------------------------------------------------------------------------TOTAL
0
0
0
0
0
0
0
0
0
12
0
0
MEAN
0
0
0
0
0
0
0
0
0
0
0
0
MAX
0
0
0
0
0
0
2
0
0
7
4
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
24
1
0
-----------------------------------------------------------------------------WTR YR 1999 TOTAL
13 MEAN
0 MAX
7 MIN
0 AC_FT
25
See also Pool Level and Storage Volume Data.

Surface Water Streamflow Data
Page 91

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
6688
Vineyard FRS
Drainage Area:
57.8 mi2
Period of Record: November 1987 to current year
Discharge, in cfs, Water Year October 1998 to September 1999
Day
Jul. 24

Peak flows of interest during Water Year 1999
Peak Discharge (cfs)
20

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
3
24
17
25
10
26
6
27
3
1
28
2
4
29
1
2
30
1
1
31
-----------------------------------------------------------------------------TOTAL
0
0
0
0
0
0
0
0
0
42
9
1
MEAN
0
0
0
0
0
0
0
0
0
1
0
0
MAX
0
0
0
0
0
0
0
0
0
20
4
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
84
17
1
-----------------------------------------------------------------------------WTR YR 1999 TOTAL
52 MEAN
0 MAX
20 MIN
0 AC_FT
103
See also Pool Level and Storage Volume Data.

Surface Water Streamflow Data
Page 92

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
6703
Rittenhouse FRS
Drainage Area:
51.3 mi2
Period of Record: September 27, 1988 to current year
Discharge, in cfs, Water Year October 1998 to September 1999
Day
Jul. 15*

Peak flows greater than 3.0 feet gage height during Water Year 1999
Day
Peak Discharge (cfs)
Peak Discharge (cfs)
77
Aug. 25
39

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
--2
--3
--4
--5
--6
--7
--8
--9
--10
--11
--12
--13
--14
--15
--4
16
--1
17
--18
--19
--20
--21
--22
----23
----24
----1
25
----4
26
----12
27
----6
28
----4
29
--2
30
--1
31
1
-----------------------------------------------------------------------------TOTAL
0
0
0
0
0
0
0
0
0
0
30
5
MEAN
0
0
0
0
0
0
0
0
0
0
1
0
MAX
0
0
0
0
0
0
0
0
0
0
39
11
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
59
11
-----------------------------------------------------------------------------WTR YR 1999 TOTAL
35 MEAN
0 MAX
39 MIN
0 AC_FT
70
* Gage was down due to vandalism from June 22, 1999 to July 29, 1999. A significant event on July 14 – 15 was
missed. The discharge value is from the rating based on high water marks on the staff gage.

See also Pool Level and Storage Volume Data.

Surface Water Streamflow Data
Page 93

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
6707*
Queen Creek at Rittenhouse Road
Drainage Area:
Undetermined
Period of Record: September 14, 1993 to current year
Discharge, in cfs, Water Year October 1998 to September 1999
No recorded flow during Water Year 1999
-----------------------------------------------------------------------------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 1999 TOTAL
0 MEAN
0 MAX
0 MIN
0 AC_FT
0

* Gage ID number changed during Water Year 1997 from 6713 to 6707 to mitigate radio interference
problems.

Surface Water Streamflow Data
Page 94

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
6723
Queen Creek @ CAP
2
Drainage Area:
256 mi
Period of Record: January 14, 1999 to current year
Discharge, in cfs, Water Year October 1998 to September 1999
Day
Sep. 16

Peak flows of interest during Water Year 1999
Peak Discharge (cfs)
370

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
24
2
1
3
4
5
6
7
8
9
10
11
12
13
14
15
16
180
17
4
18
1
19
20
21
22
23
24
25
26
27
28
29
30
2
31
-----------------------------------------------------------------------------TOTAL
------0
0
0
0
0
0
3
0
211
MEAN
------0
0
0
0
0
0
0
0
7
MAX
------0
0
0
1
0
0
4
0
370
MIN
------0
0
0
0
0
0
0
0
0
AC_FT
------0
0
0
0
0
0
5
0
419
-----------------------------------------------------------------------------WTR YR 1999 TOTAL
213 MEAN
1 MAX
370 MIN
0 AC_FT
423

Surface Water Streamflow Data
Page 95

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
6738
Whitlow Ranch Dam
Drainage Area:
143 mi2
Period of Record: FCDMC – January 8, 1998 to current year
Refer to U.S. Army Corps of Engineers, Los Angeles District for official data at this site.

Surface Water Streamflow Data
Page 96

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
6813
Buckeye FRS #3
Drainage Area:
9.3 mi2
Period of Record: November 23, 1992 to current year
Discharge, in cfs, Water Year October 1998 to September 1999
Day
Apr. 2

One flow of record during Water Year 1999
Peak Discharge (cfs)
4

-----------------------------------------------------------------------------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
4
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 1999 TOTAL
0 MEAN
0 MAX
4 MIN
0 AC_FT
0
See also Pool Level and Storage Volume Data.

Surface Water Streamflow Data
Page 97

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
6823
White Tanks #4 FRS
Drainage Area:
18.6 mi2 (White Tanks ADMS)
Period of Record: November 1987 to current year
Discharge, in CFS, Water Year October 1998 to September 1999
No recorded flows during Water Year 1999
-----------------------------------------------------------------------------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 1999 TOTAL
0 MEAN
0 MAX
0 MIN
0 AC_FT
0

Surface Water Streamflow Data
Page 98

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
6833
Waterman @ Rainbow
Drainage Area:
362 mi2
Period of Record: March 18, 1999 to current year
Discharge, in cfs, Water Year October 1998 to September 1999
Day
Aug. 31
Jul. 14

Peak flows of interest since installation in Water Year 1999
Day
Peak Discharge (cfs)
Peak Discharge (cfs)
1,320
Jul. 28
349
270
Jul. 8
235

Discharge (cfs)

W a te rm a n a t Ra inbow Eve nt of Aug. 31, 1999
15-m inute M a x im um Discha rge s
1500
1000
500
0
08/31/1999
12:00

08/31/1999
18:00

09/01/1999
0:00

09/01/1999
6:00

09/01/1999
12:00

continued on next page
Surface Water Streamflow Data
Page 99

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
6833
Waterman @ Rainbow
Drainage Area:
362 mi2
Period of Record: March 18, 1999 to current year
Discharge, in cfs, Water Year October 1998 to September 1999
Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
------------66
2
------------3
------------4
------------2
5
------------1
6
------------7
------------8
------------92
9
--------------4
3
10
--------------11
--------------7
12
------------1
4
13
------------21
2
14
------------150
15
------------76
16
------------21
1
17
------------15
6
18
----------19
----------20
----------21
----------1
22
----------7
23
----------1
24
----------2
25
----------26
----------27
----------28
----------141
29
----------62
30
----------27
31
----------11
212
-----------------------------------------------------------------------------TOTAL
----------0
0
2
2
628
238
66
MEAN
----------0
0
0
0
20
8
2
MAX
----------0
0
7
35
349 1320
294
MIN
----------0
0
0
0
0
0
0
AC_FT
----------0
0
4
3 1246
473
130
-----------------------------------------------------------------------------WTR YR 1999 TOTAL
936 MEAN
3 MAX
1320 MIN
0 AC_FT
1856
NOTE: This location regularly receives irrigation tail water of < 5 cfs.
Gage installed on March 18, 1999.

Surface Water Streamflow Data
Page 100

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
6848
Gila R. @ 116th Ave
Drainage Area:
43,300 mi2 (approximate)
Period of Record: December 21, 1998 to current year*
Discharge, in cfs, Water Year October 1998 to September 1999
No recorded flows since installation during Water Year 1999**
-----------------------------------------------------------------------------TOTAL
----0
0
0
0
0
0
0
0
0
0
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
AC_FT
----0
0
0
0
0
0
0
0
0
0
-----------------------------------------------------------------------------WTR YR 1999 TOTAL
0 MEAN
0 MAX
0 MIN
0 AC_FT
0
*Gage installed on December 21, 1998, replacing FCDMC gage #6863 at the old 115th Avenue Gila
River crossing. Old gage was in service from November 6, 1997 until installation of new gage 6848.
**An undetermined amount of flow occurs more or less continually at this location below the gage.

Surface Water Streamflow Data
Page 101

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
USGS Gage:
Drainage Area:

Name:
6853
Gila @ Estrella Pky
09514100 (Gila River at Estrella Parkway nr Goodyear, AZ)
45,585 mi2

See USGS Water-Data Report AZ-99-1 for data for this site.

5-year
20,000

Flood Flow Frequency
(source: Table 2-4 from Study for Modified Roosevelt Dam)
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 102

100-year
217,000

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
6893
Estrella Fan
Drainage Area:
1.0 mi2
Period of Record: April 30, 1993 to current year
Revised Records: WY1997: WY1996
Discharge, in cfs, Water Year October 1998 to September 1999
No recorded flows during Water Year 1999
-----------------------------------------------------------------------------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 1999 TOTAL
0 MEAN
0 MAX
0 MIN
0 AC_FT
0

2-year
310

Flood Flow Frequency
(based on HEC-1 analysis, 1997)
Magnitude and Probability of Instantaneous Peak Flow
Discharge, in cfs, for indicated Recurrence Interval
5-year
10-year
25-year
50-year
860
1,280
1,800
2,250

Surface Water Streamflow Data
Page 103

100-year
2,710

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
6923
Sauceda Wash
Drainage Area:
126 mi2
Period of Record: February 28, 1990 to current year*
Discharge, in cfs, Water Year October 1998 to September 1999
Day
Jul. 14

Peak flows of interest during Water Year 1999**
Day
Peak Discharge (cfs)
Peak Discharge (cfs)
105***
Sep. 16
40***

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
2
4
3
4
5
6
7
8
9
10
11
12
13
14
5
15
7
16
3
17
17
18
3
19
20
21
22
23
24
25
26
27
28
29
30
31
-----------------------------------------------------------------------------TOTAL
0
0
0
0
0
0
4
0
0
16
0
20
MEAN
0
0
0
0
0
0
0
0
0
1
0
1
MAX
0
0
0
0
0
0
31
0
0
105
0
40
MIN
0
0
0
0
0
0
0
0
0
0
0
0
AC_FT
0
0
0
0
0
0
9
0
0
31
0
40
-----------------------------------------------------------------------------WTR YR 1999 TOTAL
40 MEAN
0 MAX
284 MIN
0 AC_FT
80
* USGS maintained a crest stage gage at this location from 11/27/1963 to 09/30/1979. In 1990, a joint
USGS/FCDMC continuous station was installed. The USGS continuous station was discontinued 10/01/1994.
Since Water Year 1995, the continuous station has been operated by the FCDMC and the crest stage gage by
the USGS.
** See also USGS crest stage gage, 09519760, data for this site.
*** USGS reported these maximum discharges at their crest gage based on the bridge culverts being partially
filled with sediment.

2-year
530

Flood Flow Frequency
(based on HECWRC implementation of Bulletin 17B, n = 25,
station skew used based on examination of observed data plots)
Magnitude and Probability of Instantaneous Peak Flow
Discharge, in cfs, for indicated Recurrence Interval
5-year
10-year
25-year
50-year
1,640
2,610
3,640
5,020

Surface Water Streamflow Data
Page 104

100-year
6,040

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
6983
Vekol Wash
Drainage Area:
150 mi2
Period of Record: FCDMC Continuous Station: March 7, 1990 to current year
USGS Continuous Station: 1990 – 1996 (09488650)
USGS Crest Stage Gage: 1996 – current year (09488650)
Discharge, in cfs, Water Year October 1998 to September 1999
Day
Sep. 23
Aug. 20

Peak flows of interest during Water Year 1999
Day
Peak Discharge (cfs)
Peak Discharge (cfs)
925
Jul. 14
698
605
Jul. 7
454

Discharge (cfs)

Vekol Wash - Sept. 23
15-minute MaximumDischarges

2-year
1,600

1000
800
600
400
200
0
09/24/1999
0:00

09/24/1999
3:00

09/24/1999
6:00

09/24/1999
9:00

09/24/1999
12:00

Flood Flow Frequency
(based on regional equations for Region 13 as shown in USGS WSP 2433)
Magnitude and Probability of Instantaneous Peak Flow
Discharge, in cfs, for indicated Recurrence Interval
5-year
10-year
25-year
50-year
100-year
3,660
5,700
9,030
12,000
15,600

continued on next page

Surface Water Streamflow Data
Page 105

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
6983
Vekol Wash
Drainage Area:
150 mi2
Period of Record: FCDMC Continuous Station: March 7, 1990 to current year
USGS Continuous Station: 1990 – 1996 (09488650)
USGS Crest Stage Gage: 1996 – current year (09488650)
Discharge, in cfs, Water Year October 1998 to September 1999
Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
2
3
4
5
6
7
20
8
1
9
10
11
12
13
41
14
46
15
2
14
16
1
17
18
19
20
25
21
22
23
73
24
25
26
27
28
23
29
3
5
30
31
-----------------------------------------------------------------------------TOTAL
0
0
0
0
0
0
0
0
0
112
54
88
MEAN
0
0
0
0
0
0
0
0
0
4
2
3
MAX
0
0
0
0
0
0
0
0
0
698
605
925
MIN
0
0
0
0
0
0
0
0
0
0
0
0
AC_FT
0
0
0
0
0
0
0
0
0
222
107
175
-----------------------------------------------------------------------------WTR YR 1999 TOTAL
254 MEAN
1 MAX
925 MIN
0 AC_FT
504

Surface Water Streamflow Data
Page 106

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
7013
Martinez Creek
Drainage Area:
109 mi2
Period of Record: November 23, 1994 to current year
Discharge, in cfs, Water Year October 1998 to September 1999
One recorded flow during Water Year 1999
Day
Peak Discharge (cfs)
Jul. 25
8,569
-----------------------------------------------------------------------------TOTAL
0
0
0
0
0
0
0
0
0
181
0
0
MEAN
0
0
0
0
0
0
0
0
0
6
0
0
MAX
0
0
0
0
0
0
0
0
0 8569
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
359
0
0
-----------------------------------------------------------------------------WTR YR 1999 TOTAL
181 MEAN
0 MAX
8569 MIN
0 AC_FT
359

Martinez Creek - Event of July 25, 1999
15-minute Maximum Discharges

Discharge (cfs)

10000
8000
6000
4000
2000
0
07/25/1999 18:00

07/25/1999 21:00

07/26/1999 0:00

Note (1): Flows below about 3,000 cfs are considered approximate at best due to multiple channel
configuration of Martinez Creek at the gage location. The rating for flows above 3,000 cfs are still
considered poor due to the expanding downstream reach, mobile bed conditions, and the angle of
attack of flow at the gage.
Note (2): The pressure transducer at this gage site was lowered on August 31, 1999 to account for
the significant scour of the channel that occurred during the July 25 event.
Flood Flow Frequency
(based on R. W. Cruff analysis, 1995 combining FEMA, 1994 and Box Canyon relation shape)
Magnitude and Probability of Instantaneous Peak Flow
Discharge, in cfs, for indicated Recurrence Interval
2-year
5-year
10-year
25-year
50-year
100-year
1,520
5,000
9,220
18,000
27,400
32,000

Surface Water Streamflow Data
Page 107

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
7043
Sols Wsh nr Matthie
Drainage Area:
121 mi2
Period of Record: August 4, 1995 to current year
Discharge, in cfs, Water Year October 1998 to September 1999
Day
Jul. 18

Peak flows of interest during Water Year 1999*
Day
Peak Discharge (cfs)
Peak Discharge (cfs)
528
Jul. 15
468

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
61
16
17
18
33
19
114
20
21
22
23
24
25
26
27
28
29
30
31
-----------------------------------------------------------------------------TOTAL
0
0
0
0
0
0
0
0
0
209
0
0
MEAN
0
0
0
0
0
0
0
0
0
7
0
0
MAX
0
0
0
0
0
0
0
0
0
528
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
414
0
0
-----------------------------------------------------------------------------WTR YR 1999 TOTAL
209 MEAN
1 MAX
528 MIN
0 AC_FT
414
* About 220 cfs pass below the instrument.
Flood Flow Frequency
(FEMA Sept. 1995)
Magnitude and Probability of Instantaneous Peak Flow
Discharge, in cfs, for indicated Recurrence Interval
10-year
50-year
100-year
4,800
9,800
12,250

Surface Water Streamflow Data
Page 108

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
7063
Hartman Wash
Drainage Area:
5.4 mi2
Period of Record: FCDMC: July 6, 1994 to current year
USGS: Crest Stage Data, WY 1964-1979 and 1992 to current year
(09515800)
Revised Records: WY1996: WY1995
Discharge, in cfs, Water Year October 1998 to September 1999
Peak flow of interest during Water Year 1999*
Day
Peak Discharge (cfs)
Jul. 15
97
-----------------------------------------------------------------------------TOTAL
0
0
0
0
0
0
0
0
0
1
0
0
MEAN
0
0
0
0
0
0
0
0
0
0
0
0
MAX
0
0
0
0
0
0
0
0
0
97
0
0
MIN
0
0
0
0
0
0
0
0
0
0
0
0
AC_FT
0
0
0
0
0
0
0
0
0
2
0
0
-----------------------------------------------------------------------------WTR YR 1999 TOTAL
1 MEAN
0 MAX
97 MIN
0 AC_FT
2

2-year
200

Flood Flow Frequency
(based on HECWRC implementation of Bulletin 17B, n = 24,
station skew used based on examination of observed data plots)
Magnitude and Probability of Instantaneous Peak Flow
Discharge, in cfs, for indicated Recurrence Interval
5-year
10-year
25-year
50-year
1,020
1,890
2,840
4,110

Surface Water Streamflow Data
Page 109

100-year
4,990

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
7083
Flying E Wash
Drainage Area:
8.5 mi2 (4 mi2 partially controlled by three stock tanks)
Period of Record: July 12, 1994 to current year
Revised Records: WY1996: WY1994-1995
Discharge, in cfs, Water Year October 1998 to September 1999
Day
Jul. 15

Peak flows of interst during Water Year 1999
Day
Peak Discharge (cfs)
Peak Discharge (cfs)
444
Aug. 31
192

Discharge (cfs)

Flying E Wash - July 15
15-minute Maximum Discharges
500
400
300
200
100
0
07/15/1999
0:00

07/15/1999
3:00

07/15/1999
6:00

07/15/1999
9:00

07/15/1999
12:00

Flood Flow Frequency
(based on Wickenburg ADMS HEC-1 and R. W. Cruff, 1995 graphical extension)
Magnitude and Probability of Instantaneous Peak Flow
Discharge, in cfs, for indicated Recurrence Interval
2-year
5-year
10-year
25-year
50-year
100-year
890
2,200
3,490
4,770
5,860
6,940

continued on next page

Surface Water Streamflow Data
Page 110

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
7083
Flying E Wash
Drainage Area:
8.5 mi2 (4 mi2 partially controlled by three stock tanks)
Period of Record: July 12, 1994 to current year
Revised Records: WY1996: WY1994-1995
Discharge, in cfs, Water Year October 1998 to September 1999
Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
2
8
3
4
5
6
7
8
9
10
11
12
13
14
15
13
16
17
18
19
20
21
22
23
24
25
26
27
28
1
29
30
31
6
-----------------------------------------------------------------------------TOTAL
0
0
0
0
0
0
8
0
0
13
7
0
MEAN
0
0
0
0
0
0
0
0
0
0
0
0
MAX
5
8
0
0
0
0
86
0
0
444
192
0
MIN
0
0
0
0
0
0
0
0
0
0
0
0
AC_FT
0
0
0
0
0
0
16
0
0
25
13
0
-----------------------------------------------------------------------------WTR YR 1999 TOTAL
28 MEAN
0 MAX
444 MIN
0 AC_FT
55

Surface Water Streamflow Data
Page 111

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
7093
Casandro Wash
Drainage Area:
0.61 mi2
Period of Record: July 12, 1994 to current year
Discharge, in cfs, Water Year October 1998 to September 1999
Day
Aug. 31

Two recorded flows during Water Year 1999
Day
Peak Discharge (cfs)
Peak Discharge (cfs)
66
Jul. 15
42

-----------------------------------------------------------------------------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
42
66
0
MIN
0
0
0
0
0
0
0
0
0
0
0
0
AC_FT
0
0
0
0
0
0
0
0
0
0
1
0
-----------------------------------------------------------------------------WTR YR 1999 TOTAL
1 MEAN
0 MAX
66 MIN
0 AC_FT
1

2-year
5

Flood Flow Frequency
(based on FEMA, 9/95 and R. W. Cruff, 1995 graphical extension)
Magnitude and Probability of Instantaneous Peak Flow
Discharge, in cfs, for indicated Recurrence Interval
5-year
10-year
25-year
50-year
20
50
200
500

Surface Water Streamflow Data
Page 112

100-year
800

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
7113
Powder House Wash
Drainage Area:
1.8 mi2
Period of Record: May 18, 1995 to current year
Discharge, in cfs, Water Year October 1998 to September 1999
One flow during Water Year 1999
Day
Peak Discharge (cfs)
Jul. 15
23
-----------------------------------------------------------------------------TOTAL
0
0
0
0
0
0
0
0
0
1
0
0
MEAN
0
0
0
0
0
0
0
0
0
0
0
0
MAX
0
0
0
0
0
0
0
0
0
23
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
1
0
0
-----------------------------------------------------------------------------WTR YR 1999 TOTAL
1
MEAN
0 MAX
23 MIN
0 AC_FT
1
Flood Flow Frequency
(FEMA Sept. 1995)
Magnitude and Probability of Instantaneous Peak Flow
Discharge, in cfs, for indicated Recurrence Interval
10-year
50-year
100-year
300
1,300
1,900

Surface Water Streamflow Data
Page 113

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Streamflow
Station Number:
Name:
7133
Casandro Dam
Drainage Area:
1.3 mi2
Period of Record: August 15, 1996 to current year
Discharge, in cfs, Water Year October 1998 to September 1999
Day
Jul. 15

Peak flows of interest during Water Year 1999
Day
Peak Discharge (cfs)
Peak Discharge (cfs)
15
Aug. 31
15

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
4
2
3
4
5
6
7
8
9
10
11
12
13
14
15
6
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
4
-----------------------------------------------------------------------------TOTAL
0
0
0
0
0
0
0
0
0
6
4
4
MEAN
0
0
0
0
0
0
0
0
0
0
0
0
MAX
0
0
0
0
0
0
0
0
0
15
15
13
MIN
0
0
0
0
0
0
0
0
0
0
0
0
AC_FT
0
0
0
0
0
0
0
0
0
13
8
8
-----------------------------------------------------------------------------WTR YR 1999 TOTAL
14 MEAN
0 MAX
15 MIN
0 AC_FT
29
See also Pool Level and Storage Volume Data.

Surface Water Streamflow Data
Page 114

FCDMC Annual Surface Water Report
Water Year 1999

POOL LEVEL DATA

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Reservoir Depths
Station Number:
Name:
768
Tat Momolikot Dam
2
Drainage Area:
1,780 mi
Period of Record: January 21, 1998 to current year
Refer to U.S. Army Corps of Engineers, Los Angeles District for official data for this site.

Pool Level Data
Page 1

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Reservoir Depths
Station Number:
Name:
4563
Spookhill FRS
2
Drainage Area:
13.6 mi
Period of Record: November 1987 to current year
Depth, in feet, Water Year October 1998 to September 1999
Day
Sep. 14

Maximum levels of interest during Water Year 1999
Maximum Level (feet)
Day
Maximum Level (feet)
0.76

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
2
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
3
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
4
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
5
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
7
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
8
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
9
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
10
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
11
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
12
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
13
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
14
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
15
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
16
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
17
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
18
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
19
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
20
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
21
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
22
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
23
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
24
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
25
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
26
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
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
0.6
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
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
0.6
MAX
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.8
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 1999 MEAN
0.59 MAX
0.76 MIN
0.59
See also Surface Water Streamflow and Storage Volume Data.

Pool Level Data
Page 2

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Reservoir Depths
Station Number:
Name:
4648
E.Fork CC #1
2
Drainage Area:
1.18 mi
Period of Record: March 2, 1994 to current year
Depth, in feet, Water Year October 1998 to September 1999
Day
Jul. 14
Jul. 18

Maximum levels of interest during Water Year 1999
Maximum Level (feet)
Day
Maximum Level (feet)
1.25
Oct. 30
1.23
1.02

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
2
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
3
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
4
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
5
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
6
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
7
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
8
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
9
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
10
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
11
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
12
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
13
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
14
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.2
0.1
0.1
15
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.2
0.1
0.1
16
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
17
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
18
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
19
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
20
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
21
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
22
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
23
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
24
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
25
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
26
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
27
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
28
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
29
0.1
0.1
0.1
0.1
--0.1
0.1
0.1
0.1
0.1
0.1
0.1
30
0.1
0.1
0.1
0.1
--0.1
0.1
0.1
0.1
0.1
0.1
0.1
31
0.1
--0.1
0.1
--0.1
--0.1
--0.1
0.1
-------------------------------------------------------------------------------MEAN
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
MAX
1.2
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
1.2
0.1
0.1
MIN
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
-----------------------------------------------------------------------------WTR YR 1999 MEAN
0.10 MAX
1.25 MIN
0.10
See also Surface Water Streamflow and Storage Volume data.

Pool Level Data
Page 3

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Reservoir Depths
Station Number:
Name:
4653
Tatum Basin Outflow
2
Drainage Area:
2.17 mi
Period of Record: May 8, 1998 to current year
Depth, in feet, Water Year October 1998 to September 1999
Day
Jul. 14

Maximum levels of interest during Water Year 1999
Maximum Level (feet)
Day
Maximum Level (feet)
0.38

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
2
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
3
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
4
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
5
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
6
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
7
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
8
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
9
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
10
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
11
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
12
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
13
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
14
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
15
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.3
0.1
0.1
16
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
17
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
18
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
19
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
20
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
21
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
22
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
23
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
24
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
25
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
26
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
27
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
28
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
29
0.1
0.1
0.1
0.1
--0.1
0.1
0.1
0.1
0.1
0.1
0.1
30
0.1
0.1
0.1
0.1
--0.1
0.1
0.1
0.1
0.1
0.1
0.1
31
0.1
--0.1
0.1
--0.1
--0.1
--0.1
0.1
-------------------------------------------------------------------------------MEAN
0.1
0.1
0.1
0.1
0.0
0.0
0.0
0.0
0.0
0.1
0.0
0.0
MAX
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.4
0.1
0.1
MIN
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
-----------------------------------------------------------------------------WTR YR 1999 MEAN
0.05 MAX
0.38 MIN
0.05
See also Surface Water Streamflow and Storage Volume data.

Pool Level Data
Page 4

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Reservoir Depths
Station Number:
Name:
4658
E.Fork CC #4
2
Drainage Area:
0.68 mi
Period of Record: January 18, 1994 to current year
Depth, in feet, Water Year October 1998 to September 1999
Day

Maximum levels of interest during Water Year 1999
Maximum Level (feet)
Day
Maximum Level (feet)

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
0.2
0.1
2
0.0
0.0
0.2
0.0
0.0
0.0
0.6
0.0
0.0
0.0
0.1
0.2
3
0.0
0.0
0.2
0.0
0.0
0.0
0.1
0.0
0.0
0.0
0.1
0.1
4
0.0
0.0
0.0
0.0
0.0
0.0
0.3
0.0
0.0
0.0
0.1
0.0
5
0.0
0.0
0.0
0.0
0.2
0.0
0.2
0.0
0.0
0.0
0.1
0.0
6
0.0
0.0
0.2
0.0
0.2
0.0
0.2
0.0
0.0
0.1
0.3
0.0
7
0.0
0.0
0.1
0.0
0.2
0.0
0.1
0.0
0.0
0.3
0.2
0.0
8
0.0
0.0
0.0
0.0
0.1
0.0
0.0
0.0
0.0
0.2
0.2
0.0
9
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.1
0.1
0.0
10
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.1
0.1
0.0
11
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.1
0.0
12
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.1
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
0.5
0.0
0.2
15
0.0
0.0
0.3
0.0
0.0
0.0
0.0
0.0
0.0
0.4
0.0
0.3
16
0.0
0.0
0.2
0.0
0.0
0.2
0.0
0.0
0.0
0.2
0.0
0.1
17
0.0
0.0
0.1
0.0
0.0
0.3
0.0
0.0
0.0
0.2
0.0
0.0
18
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.5
0.1
0.0
19
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.3
0.3
0.1
20
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.2
0.2
0.3
21
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.1
0.2
0.2
22
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.2
0.1
0.1
23
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.4
0.1
0.3
24
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.3
0.0
0.2
25
0.2
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.2
0.0
0.1
26
0.3
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.2
0.0
0.1
27
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.2
0.2
0.1
28
0.0
0.1
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.2
0.3
0.0
29
0.0
0.2
0.0
0.0
--0.0
0.0
0.0
0.0
0.3
0.2
0.0
30
0.4
0.0
0.0
0.0
--0.0
0.0
0.0
0.0
0.3
0.2
0.0
31
0.1
--0.0
0.0
--0.0
--0.0
--0.2
0.2
-------------------------------------------------------------------------------MEAN
0.0
0.0
0.0
0.0
0.0
0.0
0.1
0.0
0.0
0.2
0.1
0.1
MAX
2.4
0.9
1.1
0.0
2.4
0.8
1.5
0.0
0.0
3.7
2.4
1.8
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 1999 MEAN
0.05 MAX
3.65 MIN
0.00
See also Surface Water Streamflow and Storage Volume data.

Pool Level Data
Page 5

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Reservoir Depths
Station Number:
Name:
4683
E.Fork CC #3
2
2
Drainage Area:
3.52 mi (1.86 mi controlled by EFCC #1 and EFCC #4)
Period of Record: September 13, 1994 to current year
Depth, in feet, Water Year October 1998 to September 1999
Maximum levels of interest during Water Year 1999
Maximum Level (feet)
Day
Maximum Level (feet)
3.6
Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
3
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
4
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
5
0.2
0.2
0.2
0.2
0.2
0.2
0.3
0.2
0.2
0.2
0.2
0.2
6
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
7
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
8
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
9
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
10
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
11
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
12
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
13
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
14
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.4
0.2
0.2
15
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
16
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
17
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
18
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
19
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
20
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
21
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
22
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
23
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
24
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
25
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
26
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
27
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
28
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
29
0.2
0.2
0.2
0.2
--0.2
0.2
0.2
0.2
0.2
0.2
0.2
30
0.2
0.2
0.2
0.2
--0.2
0.2
0.2
0.2
0.2
0.2
0.2
31
0.2
--0.2
0.2
--0.2
--0.2
--0.2
0.2
-------------------------------------------------------------------------------MEAN
0.2
0.1
0.1
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
MAX
0.6
0.2
0.2
0.2
0.2
0.2
0.3
0.2
0.2
3.6
0.2
0.2
MIN
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
-----------------------------------------------------------------------------WTR YR 1999 MEAN
0.15 MAX
3.60 MIN
0.15
Day
Jul. 14

Flows up to about the 2-year event are passed beneath the detention basin via storm drains.
See also Surface Water Streamflow and Storage Volume data.

Pool Level Data
Page 6

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Reservoir Depths
Station Number:
Name:
4803
Dreamy Draw Dam
2
Drainage Area:
1.3 mi
Period of Record: November 1987 to current year
Revised Records: WY1996: WY1995
Depth, in feet, Water Year October 1998 to September 1999
Day
Nov. 9

Maximum levels of interest during Water Year 1999
Maximum Level (feet)
Day
Maximum Level (feet)
2.05
Jul. 14
0.80

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
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
4
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
0.1
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
13
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
0.2
0.0
0.0
15
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
16
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
17
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
18
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
19
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
20
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
21
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
22
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
23
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
24
0.0
0.0
--0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
25
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
27
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
29
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
31
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
2.1
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.8
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 1999 MEAN
0.09 MAX
2.05 MIN
0.00
Gage was down from December 24 – 31, and January 30 – February 4. No significant events were
missed.
See also Surface Water Streamflow and Storage Volume data.
Pool Level Data
Page 7

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Reservoir Depths
Station Number:
Name:
4818
10 St.Wash Basin #1
2
Drainage Area:
1.21 mi
Period of Record: November 26, 1996 to current year
Depth, in feet, Water Year October 1998 to September 1999
Day
Sep. 19

Maximum levels of interest during Water Year 1999
Maximum Level (feet)
Day
Maximum Level (feet)
2.50
Aug. 27
1.83

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
2
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
4
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
5
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
6
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.4
0.3
7
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.4
0.3
0.3
8
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
9
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
10
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
11
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
12
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
13
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
14
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.4
0.3
0.3
15
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
16
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
17
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
18
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
19
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.6
20
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.7
21
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
22
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
23
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
24
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
25
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
26
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
27
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.6
0.3
28
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.5
0.3
29
0.3
0.3
0.3
0.3
--0.3
0.3
0.3
0.3
0.3
0.3
0.3
30
0.3
0.3
0.3
0.3
--0.3
0.3
0.3
0.3
0.3
0.3
0.3
31
0.3
--0.3
0.3
--0.3
--0.3
--0.3
0.3
-------------------------------------------------------------------------------MEAN
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
MAX
0.8
0.3
0.4
0.3
0.6
0.3
0.7
0.3
0.3
1.2
1.8
2.5
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 1999 MEAN
0.30 MAX
2.50 MIN
0.30
See also Surface Water Streamflow and Storage Volume data.

Pool Level Data
Page 8

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Reservoir Depths
Station Number:
Name:
4904
CaveButtes Dam Pool
2
Drainage Area:
191 mi
Period of Record: November 1987 to current year
Depth, in feet, Water Year October 1998 to September 1999
Day
Jul. 15
Oct. 30

Maximum levels of interest during Water Year 1999
Maximum Level (feet)
Day
Maximum Level (feet)
16.95
Jul. 19
11.60
3.60

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
1.9
1.9
1.9
1.9
--1.9
1.9
1.9
1.9
1.9
1.9
1.9
2
1.9
1.9
1.9
1.9
--1.9
1.9
1.9
1.9
1.9
1.9
1.9
3
1.9
1.9
1.9
1.9
--1.9
1.9
1.9
1.9
1.9
1.9
1.9
4
1.9
1.9
1.9
1.9
--1.9
1.9
1.9
1.9
1.9
1.9
1.9
5
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
6
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
2.6
1.9
1.9
7
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
2.3
1.9
1.9
8
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
2.3
1.9
1.9
9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
10
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
11
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
12
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
13
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
14
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
4.5
1.9
1.9
15
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9 13.4
1.9
1.9
16
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9 13.1
1.9
1.9
17
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
3.1
1.9
1.9
18
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
2.4
1.9
1.9
19
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
5.9
1.9
1.9
20
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
21
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
22
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
23
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
2.0
1.9
1.9
24
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
2.2
1.9
1.9
25
1.9
1.9
--1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
26
2.1
1.9
--1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
27
1.9
1.9
--1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
28
1.9
1.9
--1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
29
1.9
1.9
--1.9
--1.9
1.9
1.9
1.9
1.9
1.9
1.9
30
2.4
1.9
--1.9
--1.9
1.9
1.9
1.9
1.9
1.9
1.9
31
2.1
--------1.9
--1.9
--1.9
1.9
-------------------------------------------------------------------------------MEAN
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
3.0
1.9
1.9
MAX
3.6
1.9
1.9
2.0
1.9
1.9
1.9
1.9
1.9 16.9
1.9
1.9
MIN
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
-----------------------------------------------------------------------------WTR YR 1999 MEAN
1.99 MAX 16.95 MIN
1.90
Gage was down December 25 – 31, and January 31 – February 4. No significant events were missed.
See also Surface Water Streamflow and Storage Volume data.
Pool Level Data
Page 9

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Reservoir Depths
Station Number:
Name:
4938
Reata Pass Dam
Drainage Area:
Undetermined
Period of Record: February 25, 1993 to December 22, 1998*
Depth, in feet, Water Year October 1998 to September 1999
No recorded impoundments during Water Year 1999
Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
0.2
0.2
0.2
------------------2
0.2
0.2
0.2
------------------3
0.2
0.2
0.2
------------------4
0.2
0.2
0.2
------------------5
0.2
0.2
0.2
------------------6
0.2
0.2
0.2
------------------7
0.2
0.2
0.2
------------------8
0.2
0.2
0.2
------------------9
0.2
0.2
0.2
------------------10
0.2
0.2
0.2
------------------11
0.2
0.2
0.2
------------------12
0.2
0.2
0.2
------------------13
0.2
0.2
0.2
------------------14
0.2
0.2
0.2
------------------15
0.2
0.2
0.2
------------------16
0.2
0.2
0.2
------------------17
0.2
0.2
0.2
------------------18
0.2
0.2
0.2
------------------19
0.2
0.2
0.2
------------------20
0.2
0.2
0.2
------------------21
0.2
0.2
0.2
------------------22
0.2
0.2
0.2
------------------23
0.2
0.2
--------------------24
0.2
0.2
--------------------25
0.2
0.2
--------------------26
0.2
0.2
--------------------27
0.2
0.2
--------------------28
0.2
0.2
--------------------29
0.2
0.2
--------------------30
0.2
0.2
--------------------31
0.2
---------------------------------------------------------------------------------------------------MEAN
0.2
0.2
0.2
------------------MAX
0.2
0.2
0.2
------------------MIN
0.2
0.2
0.2
-----------------------------------------------------------------------------------------------WTR YR 1999 MEAN
0.18 MAX
0.18 MIN
0.18
*Gage was permanently removed during Water Year 1999 on December 22.

Pool Level Data
Page 10

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Reservoir Depths
Station Number:
Name:
5113
Saddleback FRS
2
Drainage Area:
29.6 mi excluding area brought in from Harquahala FRS
Period of Record: December 16, 1988 to current year
Depth, in feet, Water Year October 1998 to September 1999
No recorded impoundments during Water Year 1999
-----------------------------------------------------------------------------MEAN
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
MAX
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
MIN
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
-----------------------------------------------------------------------------WTR YR 1999 MEAN
0.30 MAX
0.30 MIN
0.30
See also Surface Water Streamflow and Storage Volume data.

Pool Level Data
Page 11

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Reservoir Depths
Station Number:
Name:
5128
Harquahala FRS
2
Drainage Area:
102.3 mi
Period of Record: March 1, 1994 to current year
Depth, in feet, Water Year October 1998 to September 1999
Day
Sep. 12

Maximum levels of interest during Water Year 1999
Maximum Level (feet)
Day
Maximum Level (feet)
13.76

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
2
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
3
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
5
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
6
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
7
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
8
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.8
0.4
0.4
9
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
1.0
0.4
0.4
10
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.9
0.4
0.4
11
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.7
0.4
1.2
12
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4 12.9
13
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4 11.5
14
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4 10.5
15
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
9.7
16
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
8.6
17
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
7.6
18
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
6.5
19
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
5.6
20
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
5.0
21
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
4.4
22
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
4.0
23
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
3.7
24
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
3.4
25
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
3.1
26
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
2.9
27
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
2.7
28
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
2.5
29
0.4
0.4
0.4
0.4
--0.4
0.4
0.4
0.4
0.4
0.4
2.2
30
0.4
0.4
0.4
0.4
--0.4
0.4
0.4
0.4
0.4
0.4
2.0
31
0.4
--0.4
0.4
--0.4
--0.4
--0.4
0.4
-------------------------------------------------------------------------------MEAN
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
3.8
MAX
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
1.2
0.4 13.8
MIN
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
-----------------------------------------------------------------------------WTR YR 1999 MEAN
0.67 MAX 13.76 MIN
0.38
NOTE: Gated outlet not opened. Therefore, many days of post-flood impoundment.
See also Surface Water Streamflow and Storage Volume data.

Pool Level Data
Page 12

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Reservoir Depths
Station Number:
Name:
5203
Buckeye FRS #1
2
Drainage Area:
74 mi not including area from Buckeye FRS #2 and #3
Period of Record: November 1987 to current year
Depth, in feet, Water Year October 1998 to September 1999
Day
Jul. 11

Maximum levels of interest during Water Year 1999
Maximum Level (feet)
Day
Maximum Level (feet)
1.61

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
-2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5
2
-2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5
3
-2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5
4
-2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5
5
-2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5
6
-2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5
7
-2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5
8
-2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5
9
-2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5
10
-2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.4 -2.5 -2.5
11
-2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -0.4 -2.5 -2.5
12
-2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.1 -2.5 -2.5
13
-2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5
14
-2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -1.7 -2.5 -2.5
15
-2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -0.6 -2.5 -2.5
16
-2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.0 -2.5 -2.5
17
-2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5
18
-2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5
19
-2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5
20
-2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5
21
-2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5
22
-2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5
23
-2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5
24
-2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5
25
-2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5
26
-2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5
27
-2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5
28
-2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5
29
-2.5 -2.5 -2.5 -2.5
--- -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5
30
-2.5 -2.5 -2.5 -2.5
--- -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5
31
-2.5
--- -2.5 -2.5
--- -2.5
--- -2.5
--- -2.5 -2.5
-------------------------------------------------------------------------------MEAN
-2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.3 -2.5 -2.5
MAX
-2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5 -2.5
1.6 -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 1999 MEAN -2.47 MAX
1.61 MIN -2.49
NOTE: Instrument is 2.49 feet below gage datum zero at invert elevation of principal outlet, which is
located in a depressed drop box type inlet structure. Gage datum of 0.00 feet is taken to be the point
at the top of the drop box which is level with the ground at the inlet structure.
See also Surface Water Streamflow and Storage Volume data.
Pool Level Data
Page 13

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Reservoir Depths
Station Number:
Name:
5208
Buckeye FRS #2
2
Drainage Area:
5.7 mi without area from Buckeye FRS #2
Period of Record: November 11, 1992 to current year
Depth, in feet, Water Year October 1998 to September 1999
Day
Jul. 8

Maximum levels of interest during Water Year 1999
Maximum Level (feet)
Day
Maximum Level (feet)
0.96

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
-1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4
2
-1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4
3
-1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4
4
-1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4
5
-1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4
6
-1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4
7
-1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4
8
-1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -0.8 -1.4 -1.4
9
-1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4
10
-1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4
11
-1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4
12
-1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4
13
-1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4
14
-1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4
15
-1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4
16
-1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4
17
-1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4
18
-1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4
19
-1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.3
20
-1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4
21
-1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4
22
-1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4
23
-1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4
24
-1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4
25
-1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4
26
-1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4
27
-1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4
28
-1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4
29
-1.4 -1.4 -1.4 -1.4
--- -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4
30
-1.4 -1.4 -1.4 -1.4
--- -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4
31
-1.4
--- -1.4 -1.4
--- -1.4
--- -1.4
--- -1.4 -1.4
-------------------------------------------------------------------------------MEAN
-1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4
MAX
-1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4 -1.4
1.0 -1.4 -1.3
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 1999 MEAN -1.39 MAX
0.96 MIN -1.39
Instrument 1.39 feet below zero gage datum at invert of principal outlet, which is located in a
depressed drop box type inlet structure. Gage datum of 0.00 feet is taken to be the point at the top of
the drop box which is level with the ground at the inlet structure.
See also Surface Water Streamflow and Storage Volume data.
Pool Level Data
Page 14

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Reservoir Depths
Station Number:
Name:
5233
Sunset FRS
2
Drainage Area:
0.95 mi (from Wickenburg ADMS)
Period of Record: Febraury 12, 1989 to current year
Depth, in feet, Water Year October 1998 to September 1999
Day
Jul. 15

Maximum levels of interest during Water Year 1999
Maximum Level (feet)
Day
Maximum Level (feet)
6.80
Aug. 31
6.70

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
0.7
1.7
1.5
0.7
0.7
0.7
0.7
0.7
0.7
0.7
2.6
5.8
2
0.7
1.1
1.4
0.7
0.7
0.7
2.5
0.7
1.2
0.7
2.5
2.8
3
0.7
0.7
1.4
0.7
0.7
0.7
2.7
0.7
1.2
0.7
2.4
0.7
4
0.7
0.7
0.9
0.7
0.7
0.7
2.5
0.7
0.8
0.7
2.2
0.7
5
0.7
0.7
0.7
0.7
0.9
0.7
2.3
0.7
0.7
0.7
2.1
0.7
6
0.7
0.7
0.7
0.7
1.0
0.7
2.1
0.7
0.7
0.9
2.0
0.7
7
0.7
0.7
0.7
0.7
0.7
0.7
1.9
0.7
0.7
1.5
1.8
0.7
8
0.7
0.7
0.7
0.7
0.7
0.7
1.8
0.7
0.7
1.2
1.7
0.7
9
0.7
0.7
0.7
0.7
0.7
0.7
1.6
0.7
0.7
0.7
1.6
0.7
10
0.7
0.7
0.7
0.7
0.7
0.7
1.5
0.7
0.7
0.7
1.5
0.7
11
0.7
0.7
0.7
0.7
0.7
0.7
1.4
0.7
0.7
0.7
1.4
0.9
12
0.7
0.7
0.7
0.7
0.7
0.7
1.2
0.7
0.7
0.7
1.3
1.9
13
0.7
0.7
0.7
0.7
0.7
0.7
0.9
0.7
0.7
0.7
1.1
1.7
14
0.7
0.7
0.7
0.7
0.7
0.7
0.7
0.7
0.7
0.7
0.9
1.6
15
0.7
0.7
0.7
0.7
0.7
0.7
0.7
0.7
0.7
5.4
0.7
1.4
16
0.7
0.7
0.7
0.7
0.7
0.7
0.7
0.7
0.7
6.1
0.7
0.8
17
0.7
0.7
0.7
0.7
0.7
0.7
0.7
0.7
0.7
5.7
0.7
0.7
18
0.7
0.7
0.7
0.7
0.7
0.7
0.7
0.7
0.7
5.4
0.7
0.7
19
0.7
0.7
0.7
0.7
0.7
0.7
0.7
0.7
0.7
5.1
0.7
0.7
20
0.7
0.7
0.7
0.7
0.7
0.7
0.7
0.7
0.7
4.8
0.7
0.7
21
0.7
0.7
0.7
0.7
0.7
0.7
0.7
0.7
0.7
4.6
0.7
0.7
22
0.7
0.7
0.7
0.7
0.7
0.7
0.7
0.7
0.7
4.3
0.7
0.7
23
0.7
0.7
0.7
0.7
0.7
0.7
0.7
0.7
0.7
4.0
0.7
0.7
24
0.7
0.7
0.7
0.7
0.7
0.7
0.7
0.7
0.7
3.8
0.7
0.7
25
0.7
0.7
0.7
0.7
0.7
0.7
0.7
0.7
0.7
3.5
0.7
0.7
26
1.3
0.7
0.7
0.7
0.7
0.7
0.7
0.7
0.7
3.3
0.7
0.7
27
0.8
0.7
0.7
0.7
0.7
0.7
0.7
0.7
0.7
3.1
0.7
0.7
28
0.7
0.9
0.7
0.7
0.7
0.7
0.7
0.7
0.7
3.0
1.2
0.7
29
0.7
2.0
0.7
0.7
--0.7
0.7
0.7
0.7
3.0
3.8
0.7
30
1.0
1.7
0.7
0.7
--0.7
0.7
0.7
0.7
3.0
3.4
0.7
31
2.2
--0.7
0.7
--0.7
--0.7
--2.8
4.2
-------------------------------------------------------------------------------MEAN
0.8
0.8
0.8
0.7
0.7
0.7
1.2
0.7
0.7
2.7
1.5
1.1
MAX
2.5
2.2
1.6
0.7
1.4
0.7
3.1
0.7
1.6
6.8
6.7
6.4
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 1999 MEAN
1.03 MAX
6.80 MIN
0.70
See also Surface Water Streamflow and Storage Volume data.

Pool Level Data
Page 15

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Reservoir Depths
Station Number:
Name:
5248
Sunnycove FRS
2
Drainage Area:
0.98 mi (from Wickenburg ADMS)
Period of Record: November 1987 to current year
Depth, in feet, Water Year October 1998 to September 1999
Day
Jul. 15

Maximum levels of interest during Water Year 1999
Maximum Level (feet)
Day
Maximum Level (feet)
10.07
Aug. 31
7.57

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
3.7
2
0.0
0.0
0.0
0.0
--0.0
0.0
0.0
0.0
0.0
0.0
2.0
3
0.0
0.0
0.0
0.0
--0.0
0.0
0.0
0.0
0.0
0.0
1.2
4
0.0
0.0
0.0
0.0
--0.0
0.0
0.0
0.0
0.0
0.0
0.6
5
0.0
0.0
0.0
0.0
--0.0
0.0
0.0
0.0
0.0
0.0
0.2
6
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
7
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
8
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
9
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
10
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
11
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
12
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
13
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
14
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
15
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
5.8
0.0
0.0
16
0.0
--0.0
0.0
0.0
0.0
0.0
0.0
0.0
2.9
0.0
0.0
17
0.0
--0.0
0.0
0.0
0.0
0.0
0.0
0.0
1.0
0.0
0.0
18
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.1
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
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
25
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
27
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
29
0.0
0.0
--0.0
--0.0
0.0
0.0
0.0
0.0
0.0
0.0
30
0.4
0.0
--0.0
--0.0
0.0
0.0
0.0
0.0
0.0
0.0
31
0.1
--------0.0
--0.0
--0.0
1.9
-------------------------------------------------------------------------------MEAN
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.3
0.1
0.3
MAX
4.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0 10.1
7.6
5.7
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 1999 MEAN
0.05 MAX 10.07 MIN
0.00
Gage was down November 16 – 17, December 24 – 31, and January 30 – February 5. An event of
February 4 may have been missed.
See also Surface Water Streamflow and Storage Volume data.
Pool Level Data
Page 16

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Reservoir Depths
Station Number:
Name:
5418
White Tanks #3 FRS
2
Drainage Area:
20.5 mi (White Tanks ADMS)
Period of Record: November 1987 to current year
Depth, in feet, Water Year October 1998 to September 1999
Day
Apr. 2

One recorded Impound during Water Year 1999
Maximum Level (feet)
0.52

-----------------------------------------------------------------------------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
0.5
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 1999 MEAN
0.00 MAX
0.52 MIN
0.00
See also Surface Water Streamflow and Storage Volume data.

Pool Level Data
Page 17

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Reservoir Depths
Station Number:
Name:
5448
McMicken Dam
2
Drainage Area:
247 mi
Period of Record: November 1987 to current year
Depth, in feet, Water Year October 1998 to September 1999
No recorded impounds during Water Year 1999
-----------------------------------------------------------------------------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 1999 MEAN
0.00 MAX
0.00 MIN
0.00
See also Surface Water Streamflow and Storage Volume data.

Pool Level Data
Page 18

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Reservoir Depths
Station Number:
Name:
5539
Adobe Dam
2
Drainage Area:
89.6 mi
Period of Record: November 1987 to current year
Depth, in feet, Water Year October 1998 to September 1999
Day
Jul. 15

Maximum levels of interest during Water Year 1999
Maximum Level (feet)
Day
Maximum Level (feet)
6.74

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
0.1
0.1
0.1
0.1
--0.1
0.1
0.1
0.1
0.1
0.1
0.1
2
0.1
0.1
0.1
0.1
--0.1
0.1
0.1
0.1
0.1
0.1
0.1
3
0.1
0.1
0.1
0.1
--0.1
0.1
0.1
0.1
0.1
0.1
0.1
4
0.1
0.1
0.1
0.1
--0.1
0.1
0.1
0.1
0.1
0.1
0.1
5
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
6
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
7
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
8
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
9
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
10
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
11
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
12
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
13
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
14
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
1.0
0.1
0.1
15
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
4.6
0.1
0.1
16
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
1.7
0.1
0.1
17
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.2
0.1
0.1
18
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
19
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
20
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
21
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
22
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
23
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
24
0.1
0.1
--0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
25
0.1
0.1
--0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
26
0.1
0.1
--0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
27
0.1
0.1
--0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
28
0.1
0.1
--0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
29
0.1
0.1
--0.1
--0.1
0.1
0.1
0.1
0.1
0.1
0.1
30
0.1
0.1
------0.1
0.1
0.1
0.1
0.1
0.1
0.1
31
0.1
--------0.1
--0.1
--0.1
0.1
-------------------------------------------------------------------------------MEAN
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.3
0.1
0.1
MAX
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
6.7
0.1
0.1
MIN
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
-----------------------------------------------------------------------------WTR YR 1999 MEAN
0.12 MAX
6.74 MIN
0.10
Gage was down December 24 – 31, and January 30 – February 4. No significant events were missed.
See also Surface Water Streamflow and Storage Volume data.

2-year
12.8

Pool Level Data
Page 19

Flood Elevation Frequency (from USACE Design Memorandum)
Magnitude and Probability of Elevation of Impound
Elevation, in feet gage height, for Indicated Recurrence Invterval
5-year
10-year
25-year
50-year
18.5
23.3
28.3
31.3

100-year
34.5

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Reservoir Depths
Station Number:
Name:
5614
New River Dam
2
Drainage Area:
164 mi
Period of Record: November 1987 to current year
Depth, in feet, Water Year October 1998 to September 1999
Day
Jul. 15

Maximum levels of interest during Water Year 1999
Maximum Level (feet)
Day
Maximum Level (feet)
5.52

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
2.9
2.9
2.9
2.9
--2.9
2.9
2.9
2.9
2.9
2.9
2.9
2
2.9
2.9
2.9
2.9
--2.9
2.9
2.9
2.9
2.9
2.9
2.9
3
--2.9
2.9
2.9
--2.9
2.9
2.9
2.9
2.9
2.9
2.9
4
--2.9
2.9
2.9
--2.9
2.9
2.9
2.9
2.9
2.9
2.9
5
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
6
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
7
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
8
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
10
--2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
11
--2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
12
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
13
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
14
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
15
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
4.0
2.9
2.9
16
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
3.1
2.9
2.9
17
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
18
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
19
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
20
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
21
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
22
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
23
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
24
2.9
2.9
--2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
25
2.9
2.9
--2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
26
2.9
2.9
--2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
27
2.9
2.9
--2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
28
2.9
2.9
--2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
29
2.9
2.9
--2.9
--2.9
2.9
2.9
2.9
2.9
2.9
2.9
30
2.9
2.9
------2.9
2.9
2.9
2.9
2.9
2.9
2.9
31
2.9
--------2.9
--2.9
--2.9
2.9
-------------------------------------------------------------------------------MEAN
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
2.9
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
5.5
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 1999 MEAN
2.88 MAX
5.52 MIN
2.88
See also Surface Water Streamflow and Storage Volume data.

2-year
7.4

Pool Level Data
Page 20

Flood Elevation Frequency (from USACE Design Memorandum)
Magnitude and Probability of Elevation of Impound
Elevation, in feet gage height, for Indicated Recurrence Invterval
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 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Reservoir Depths
Station Number:
Name:
5968
StoneRidge Dam
2
Drainage Area:
0.86 mi
Period of Record: December 11, 1996 to current year
Depth, in feet, Water Year October 1998 to September 1999
Day
Aug. 31
Apr. 3

Maximum levels of interest during Water Year 1999
Maximum Level (feet)
Day
Maximum Level (feet)
7.15
Jul. 23
4.67
2.99
Oct. 26
2.23

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
3.2
2
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
1.9
3
0.6
0.6
0.6
0.6
0.6
0.7
1.2
0.6
0.6
0.6
0.6
0.9
4
0.6
0.6
0.6
0.6
0.6
0.7
0.7
0.6
0.6
0.6
0.6
0.9
5
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.7
0.9
6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.8
0.9
7
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.8
8
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.7
9
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.7
0.6
0.6
10
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.8
0.6
0.6
11
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.8
0.6
0.6
12
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.8
0.6
0.6
13
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.7
0.6
0.6
14
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.7
0.6
0.6
15
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.8
0.6
0.6
16
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
17
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
18
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
19
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
20
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
21
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
22
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.7
0.6
0.6
23
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.9
0.6
0.6
24
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.7
0.6
0.6
25
0.8
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
26
0.9
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
27
0.7
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
0.6
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
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
1.7
-------------------------------------------------------------------------------MEAN
0.7
0.6
0.6
0.6
0.6
0.7
0.7
0.7
0.6
0.7
0.7
0.8
MAX
2.2
0.6
0.6
0.6
0.6
0.8
3.0
0.6
0.6
4.7
7.2
3.3
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 1999 MEAN
0.67 MAX
7.15 MIN
0.65
See also Surface Water Streamflow and Storage Volume data.

Pool Level Data
Page 21

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Reservoir Depths
Station Number:
Name:
5973
SunRidge Canyon Dam
2
Drainage Area:
1.6 mi
Period of Record: February 4, 1997 to current year
Depth, in feet, Water Year October 1998 to September 1999
Day
Oct. 26

Maximum levels of interest during Water Year 1999
Maximum Level (feet)
Day
Maximum Level (feet)
7.68
Aug. 31
2.02

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
2
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
4
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.4
1.3
5
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
6
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.4
1.3
7
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
8
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.4
1.3
9
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
10
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
11
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
12
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.4
1.3
13
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.4
1.3
14
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
15
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
16
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
17
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
18
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
19
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
20
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
21
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
22
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
23
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.4
1.3
1.3
24
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.4
1.3
1.3
25
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
26
1.5
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.4
1.3
1.3
27
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.4
1.3
1.3
28
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.4
1.3
1.3
29
1.3
1.3
1.3
1.3
--1.3
1.3
1.3
1.3
1.4
1.3
1.3
30
1.3
1.3
1.3
1.3
--1.3
1.3
1.3
1.3
1.4
1.3
1.3
31
1.4
--1.3
1.3
--1.3
--1.3
--1.4
1.3
-------------------------------------------------------------------------------MEAN
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
MAX
7.7
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.8
2.0
1.3
MIN
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
-----------------------------------------------------------------------------WTR YR 1999 MEAN
1.29 MAX
7.68 MIN
1.28
See also Surface Water Streamflow and Storage Volume data.

Pool Level Data
Page 22

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Reservoir Depths
Station Number:
Drainage Area:

Name:
5978
GoldenEaglePark Dam
2
2
7.13 mi of which 2.02 mi , 2.13 mi2, and 1.6 mi2 are controlled by
Aspen, North Heights, and Sunridge Canyon Dams respectively.
Period of Record: December 12, 1996 to current year
Depth, in feet, Water Year October 1998 to September 1999

Day
Oct. 26

Maximum levels of interest during Water Year 1999
Maximum Level (feet)
Day
Maximum Level (feet)
12.10
Aug. 31
4.78

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
0.1
0.1
0.2
0.1
0.1
0.1
0.2
0.1
0.1
0.1
0.1
0.2
2
0.1
0.1
0.2
0.1
0.1
0.1
0.6
0.1
0.1
0.1
0.1
0.2
3
0.1
0.1
0.1
0.1
0.1
0.1
0.4
0.1
0.1
0.1
0.1
0.1
4
0.1
0.1
0.2
0.1
0.1
0.1
0.5
0.1
0.1
0.1
0.1
0.1
5
0.1
0.1
0.2
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
6
0.1
0.1
0.2
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
7
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
8
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
9
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
10
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
11
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
12
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
13
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
14
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.4
0.1
0.1
15
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.4
0.1
0.1
16
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.2
0.1
0.1
17
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
18
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
19
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.2
20
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
21
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
22
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.4
0.1
0.1
23
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.5
0.1
0.1
24
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.4
0.1
0.2
25
0.3
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.3
0.1
0.2
26
1.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.4
0.1
0.1
27
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.3
0.2
0.1
28
0.1
0.2
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.3
0.3
0.1
29
0.1
0.2
0.1
0.1
--0.1
0.1
0.1
0.1
0.1
0.3
0.1
30
0.1
0.2
0.1
0.1
--0.1
0.1
0.1
0.1
0.1
0.3
0.1
31
0.1
--0.1
0.1
--0.1
--0.1
--0.1
0.5
-------------------------------------------------------------------------------MEAN
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.2
0.1
0.1
MAX
12.1
0.6
0.6
0.1
0.1
0.1
1.3
0.1
0.1
3.0
4.8
1.6
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 1999 MEAN
0.12 MAX 12.10 MIN
0.10
See also Surface Water Streamflow and Storage Volume data.

Pool Level Data
Page 23

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Reservoir Depths
Station Number:
Name:
5983
North Heights Dam
2
Drainage Area:
2.13 mi
Period of Record: October 11, 1996 to current year
Depth, in feet, Water Year October 1998 to September 1999
Day
Oct. 26

Maximum levels of interest during Water Year 1999
Maximum Level (feet)
Day
Maximum Level (feet)
11.95
Jul. 22
2.79

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
3
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
4
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
5
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
6
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
7
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
8
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
9
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
10
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.3
0.2
0.2
11
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
12
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
13
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
14
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
15
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
16
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
17
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
18
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
19
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
20
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
21
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
22
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.4
0.2
0.2
23
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.3
0.2
0.2
24
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.3
0.2
0.2
25
0.3
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
26
0.8
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
27
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
28
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
29
0.2
0.2
0.2
0.2
--0.2
0.2
0.2
0.2
0.2
0.2
0.2
30
0.2
0.2
0.2
0.2
--0.2
0.2
0.2
0.2
0.2
0.2
0.2
31
0.2
--0.2
0.2
--0.2
--0.2
--0.2
0.2
-------------------------------------------------------------------------------MEAN
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
MAX
11.9
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
2.8
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 1999 MEAN
0.21 MAX 11.95 MIN
0.21
See also Surface Water Streamflow and Storage Volume data.

Pool Level Data
Page 24

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Reservoir Depths
Station Number:
Name:
5988
Aspen Dam
2
Drainage Area:
2.02 mi
Period of Record: January 2, 1997 to current year
Depth, in feet, Water Year October 1998 to September 1999
Day
Oct. 26

Maximum levels of interest during Water Year 1999
Maximum Level (feet)
Day
Maximum Level (feet)
3.46

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.2
2
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.2
0.1
0.1
0.1
3
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.2
0.1
0.1
0.1
4
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.2
0.1
0.1
0.1
5
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.2
0.2
0.1
0.1
6
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.2
0.2
0.1
0.1
7
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.2
0.2
0.1
0.1
8
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.2
0.2
0.1
0.1
9
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.2
0.1
0.1
10
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.2
0.1
0.1
11
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.2
0.1
0.1
12
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.2
0.1
0.1
13
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.2
0.1
0.1
14
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.2
0.1
0.1
15
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
16
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.2
0.1
0.1
17
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.2
0.1
0.1
18
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.2
0.1
0.1
19
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.2
0.1
0.1
20
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
21
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
22
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.2
0.1
0.1
23
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.2
0.1
0.1
24
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.2
0.1
0.1
25
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
26
0.4
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
27
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
28
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
29
0.1
0.1
0.1
0.1
--0.1
0.1
0.1
0.1
0.1
0.1
0.1
30
0.1
0.1
0.1
0.1
--0.1
0.1
0.1
0.1
0.1
0.1
0.1
31
0.1
--0.1
0.1
--0.1
--0.1
--0.1
0.2
-------------------------------------------------------------------------------MEAN
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.2
0.1
0.1
MAX
3.5
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.2
1.3
1.4
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 1999 MEAN
0.13 MAX
3.46 MIN
0.12
See also Surface Water Streamflow and Storage Volume data.

Pool Level Data
Page 25

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Reservoir Depths
Station Number:
Name:
5993
Hesperus Dam
2
Drainage Area:
2.91 mi
Period of Record: December 18, 1996 to current year
Depth, in feet, Water Year October 1998 to September 1999
Day
Oct. 26

Maximum levels of interest during Water Year 1999
Maximum Level (feet)
Day
Maximum Level (feet)
4.49
Aug. 31
2.05

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
2
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
3
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
4
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
5
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
6
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
7
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
8
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
10
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
11
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
12
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
13
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
14
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
15
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
16
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
17
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
18
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
19
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
20
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
21
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
22
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
1.0
0.9
0.9
23
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
1.0
0.9
0.9
24
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
25
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
26
1.0
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
27
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
28
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
29
0.9
0.9
0.9
0.9
--0.9
0.9
0.9
0.9
0.9
0.9
0.9
30
0.9
0.9
0.9
0.9
--0.9
0.9
0.9
0.9
0.9
0.9
0.9
31
0.9
--0.9
0.9
--0.9
--0.9
--0.9
1.0
-------------------------------------------------------------------------------MEAN
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
MAX
4.5
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
1.4
2.0
1.1
MIN
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
-----------------------------------------------------------------------------WTR YR 1999 MEAN
0.93 MAX
4.49 MIN
0.93
See also Surface Water Streamflow and Storage Volume data.

Pool Level Data
Page 26

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Reservoir Depths
Station Number:
Name:
6503
Guadalupe FRS
2
Drainage Area:
1.87 mi
Period of Record: June 29, 1989 to current year
Depth, in feet, Water Year October 1998 to September 1999
Day
Jul. 15

Maximum levels of interest during Water Year 1999
Maximum Level (feet)
Day
Maximum Level (feet)
4.02

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
2
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
4
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
5
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
6
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
7
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
8
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
9
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
10
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
11
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
12
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
13
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
14
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.4
0.3
0.3
15
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
2.7
0.3
0.3
16
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
1.1
0.3
0.3
17
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
18
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
19
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
20
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
21
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
22
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
23
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
24
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
25
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
26
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
27
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
28
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
29
0.3
0.3
0.3
0.3
--0.3
0.3
0.3
0.3
0.3
0.3
0.3
30
0.3
0.3
0.3
0.3
--0.3
0.3
0.3
0.3
0.3
0.3
0.3
31
0.3
--0.3
0.3
--0.3
--0.3
--0.3
0.3
-------------------------------------------------------------------------------MEAN
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.4
0.3
0.3
MAX
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
4.0
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 1999 MEAN
0.27 MAX
4.02 MIN
0.26
See also Surface Water Streamflow and Storage Volume data.

Pool Level Data
Page 27

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Reservoir Depths
Station Number:
Drainage Area:

Name:
6608
Freestone Basin
2
4.26 mi (area downstream of Eastern Canal only, does not include
area from overflows of Eastern Canal)
Period of Record: December 19, 1996 to current year
Depth, in feet, Water Year October 1998 to September 1999
Day
Aug. 28

Maximum levels of interest during Water Year 1999 (10 feet or greater)
Maximum Level (feet)
Day
Maximum Level (feet)
11.3
Sep. 3
9.93

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
4.5
4.4
6.3
5.0
4.4
3.8
4.6
2.4
----2.5
6.1
2
4.5
4.5
4.6
5.1
4.4
3.9
6.0
2.4
----1.7
3.0
3
4.6
4.9
3.8
5.1
4.4
4.1
3.9
2.4
----1.2
2.1
4
4.6
4.6
4.0
5.1
4.4
4.6
5.3
2.4
----3.3
3.5
5
4.6
3.8
4.2
2.6
4.4
3.7
4.5
2.4
----2.8
4.5
6
3.3
4.2
4.6
0.6
4.7
4.0
4.0
2.4
----3.5
4.7
7
3.2
4.8
5.3
3.3
5.1
4.4
3.9
2.4
----3.8
3.1
8
3.7
4.8
2.4
4.3
3.0
4.5
4.1
2.4
----4.4
3.2
9
4.0
3.9
0.8
4.5
0.9
5.4
4.1
2.4
----3.4
3.1
10
4.2
2.8
2.0
4.5
3.1
4.4
4.8
2.4
----2.8
2.7
11
4.2
4.3
4.4
4.7
3.5
4.9
5.2
2.4
----2.5
2.7
12
4.4
4.4
4.6
4.9
3.7
5.2
3.9
2.4
----2.9
2.7
13
2.1
4.5
4.7
5.0
3.8
5.2
4.3
2.4
----1.4
1.7
14
2.5
4.6
4.8
5.1
3.9
5.2
4.1
------1.5
2.1
15
3.4
4.6
4.8
3.8
4.0
4.0
3.0
------2.2
3.6
16
2.4
4.7
2.6
4.2
4.0
4.5
2.7
------2.6
3.0
17
1.9
4.7
1.9
5.2
4.2
4.0
3.7
------2.8
2.5
18
4.0
4.7
5.3
5.4
4.7
4.3
4.5
------2.7
3.2
19
4.0
4.7
5.5
4.3
3.8
4.6
2.7
------1.9
4.3
20
4.4
2.3
5.5
3.5
4.2
4.7
1.2
----4.6
1.0
6.2
21
4.4
1.0
5.5
3.9
4.3
5.6
2.3
----5.3
1.9
3.1
22
4.5
1.0
3.8
4.3
4.4
5.3
2.4
----5.5
2.6
3.0
23
4.7
2.8
3.5
4.5
4.5
4.2
2.4
----5.7
1.5
3.4
24
4.9
4.9
3.7
4.6
4.6
4.4
2.4
----5.6
2.4
3.3
25
5.8
5.2
3.8
4.8
2.7
4.5
2.4
----5.6
2.3
3.7
26
5.7
5.3
3.8
3.2
1.7
4.6
2.4
----4.3
2.2
4.4
27
4.4
5.4
3.8
3.7
3.3
5.2
2.4
----3.5
2.9
3.6
28
4.5
5.7
4.1
2.9
3.6
5.4
2.4
----4.1
3.8
3.2
29
4.5
6.2
4.8
4.4
--2.6
2.4
----5.3
3.7
1.5
30
4.5
6.3
4.8
4.4
--0.9
2.4
----5.3
1.6
0.8
31
4.4
--4.8
4.4
--3.4
------1.4
3.8
-------------------------------------------------------------------------------MEAN
4.1
4.3
4.1
4.2
3.9
4.4
3.5
2.4
--4.6
2.6
3.3
MAX
7.2
6.3
6.3
5.8
5.1
5.9
7.0
2.4
--8.4 11.3
9.9
MIN
0.4
0.9
0.0
0.4
0.6
0.7
0.3
2.4
--0.2
0.0
0.0
-----------------------------------------------------------------------------WTR YR 1999 MEAN
3.53 MAX 11.30 MIN
0.00
NOTE: Gage was down May 14 – July 19. Events in early July were missed.
Many days of impoundment due to irrigation tailwater. The gage is located inside a pump housing that, when
stage reaches a certain level, pumps water from the gage house and basin. The daily stage values fluctuate
substantially. Gage Heights above 10.0 feet are generally caused by storm events.
See also Storage Volume data.

Pool Level Data
Page 28

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Reservoir Depths
Station Number:
Drainage Area:

Name:
6623
Crossroads Park
2
15.7 mi (area downstream of US 60 only, does not include area from
Eastern Canal tailwater ditch under US 60)
Period of Record: December 18, 1996 to current year
Depth, in feet, Water Year October 1998 to September 1999
Day
Sep. 1

Maximum levels of interest during Water Year 1999
Maximum Level (feet)
Day
Maximum Level (feet)
2.13

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.6
2
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.5
3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.4
4
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
5
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
6
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
7
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
8
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
9
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
10
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
11
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
12
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
13
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
14
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
15
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
16
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
17
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
18
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
19
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
20
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
21
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
22
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
23
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
24
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
25
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
26
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
27
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
28
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
29
1.3
1.3
1.3
1.3
--1.3
1.3
1.3
1.3
1.3
1.3
1.3
30
1.3
1.3
1.3
1.3
--1.3
1.3
1.3
1.3
1.3
1.3
1.3
31
1.3
--1.3
1.3
--1.3
--1.3
--1.3
1.4
-------------------------------------------------------------------------------MEAN
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
MAX
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
2.1
2.1
MIN
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
-----------------------------------------------------------------------------WTR YR 1999 MEAN
1.33 MAX
2.13 MIN
1.33
See also Storage Volume data.

Pool Level Data
Page 29

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Reservoir Depths
Station Number:
Name:
6628
Signal Butte FRS
2
Drainage Area:
16.4 mi not including area from Apache Junction FRS
Period of Record: November 10, 1987 to current year
Depth, in feet, Water Year October 1998 to September 1999
Day
Jul. 24
Sep. 2

Maximum levels of interest during Water Year 1999
Maximum Level (feet)
Day
Maximum Level (feet)
4.83
Sep. 20
4.73
3.71

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
-0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2
2.4
1.7
2
-0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2
2.3
1.5
3
-0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2
2.1
1.3
4
-0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2
2.0
1.2
5
-0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2
1.9
1.0
6
-0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2
1.8
0.9
7
-0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2
1.8
0.8
8
-0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2
1.7
0.7
9
-0.2
0.3 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2
1.6
0.6
10
-0.2
0.3 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2
1.5
0.5
11
-0.2
0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2
1.4
0.3
12
-0.2
0.0 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2
1.4
0.3
13
-0.2
0.0 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2
1.3
0.0
14
-0.2 -0.1 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2
1.1 -0.2
15
-0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2
0.4
1.1 -0.1
16
-0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2
0.0
0.9 -0.2
17
-0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.1
0.9 -0.2
18
-0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2
0.8 -0.2
19
-0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2
0.6
1.2
20
-0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2
0.5
4.6
21
-0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2
0.5
4.2
22
-0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2
0.4
3.7
23
-0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2
0.6
0.3
3.4
24
-0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2
4.6
0.2
3.1
25
-0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2
4.5
0.1
2.9
26
-0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2
4.0 -0.1
2.7
27
-0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2
3.6 -0.2
2.5
28
-0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2
3.2 -0.2
2.4
29
-0.2 -0.2 -0.2 -0.2
--- -0.2 -0.2 -0.2 -0.2
2.9 -0.2
2.2
30
-0.2 -0.2 -0.2 -0.2
--- -0.2 -0.2 -0.2 -0.2
2.7 -0.2
2.1
31
-0.2
--- -0.2 -0.2
--- -0.2
--- -0.2
--2.6
0.5
-------------------------------------------------------------------------------MEAN
-0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2
0.8
1.0
1.5
MAX
-0.2
0.6 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2
4.8
2.4
4.7
MIN
-0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2
-----------------------------------------------------------------------------WTR YR 1999 MEAN
0.09 MAX
4.83 MIN -0.25
See also Surface Water Streamflow and Storage Volume data.

Pool Level Data
Page 30

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Reservoir Depths
Station Number:
Name:
6673
Apache Jct. FRS
2
Drainage Area:
5.8 mi
Period of Record: November 1987 to current year
Depth, in feet, Water Year October 1998 to September 1999
Day
Jul. 23

Maximum levels of interest during Water Year 1999
Maximum Level (feet)
Day
Maximum Level (feet)
4.76
Oct. 30
1.30

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
2
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
3
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
4
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
5
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
6
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
7
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
8
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
9
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
10
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
11
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
12
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
13
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
14
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
15
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
16
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
17
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
18
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
19
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
20
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
21
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
22
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
23
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
1.2
0.1
0.1
24
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
2.8
0.1
0.1
25
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
26
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
27
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
28
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
29
0.1
0.1
0.1
0.1
--0.1
0.1
0.1
0.1
0.1
0.1
0.1
30
0.2
0.1
0.1
0.1
--0.1
0.1
0.1
0.1
0.1
0.1
0.1
31
0.1
--0.1
0.1
--0.1
--0.1
--0.1
0.1
-------------------------------------------------------------------------------MEAN
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.2
0.1
0.1
MAX
1.3
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
4.8
0.1
0.1
MIN
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
-----------------------------------------------------------------------------WTR YR 1999 MEAN
0.14 MAX
4.76 MIN
0.13
See also Surface Water Streamflow and Storage Volume data.

Pool Level Data
Page 31

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Reservoir Depths
Station Number:
Name:
6683
Powerline FRS
2
Drainage Area:
49.9 mi
Period of Record: December 3, 1992 to current year
Depth, in feet, Water Year October 1998 to September 1999
Day
Jul. 23

Maximum levels of interest during Water Year 1999
Maximum Level (feet)
Day
Maximum Level (feet)
0.95
Aug. 27
0.57

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
3
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
4
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
5
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
6
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
7
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
8
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
9
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
10
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
11
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
12
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
13
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
14
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
15
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
16
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
17
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
18
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
19
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
20
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
21
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
22
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
23
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.3
0.2
0.2
24
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.8
0.2
0.2
25
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.5
0.2
0.2
26
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.3
0.2
0.2
27
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
28
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
29
0.2
0.2
0.2
0.2
--0.2
0.2
0.2
0.2
0.2
0.2
0.2
30
0.2
0.2
0.2
0.2
--0.2
0.2
0.2
0.2
0.2
0.2
0.2
31
0.2
--0.2
0.2
--0.2
--0.2
--0.2
0.2
-------------------------------------------------------------------------------MEAN
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
MAX
0.2
0.2
0.2
0.2
0.2
0.2
0.4
0.2
0.2
0.9
0.6
0.2
MIN
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
-----------------------------------------------------------------------------WTR YR 1999 MEAN
0.20 MAX
0.95 MIN
0.20
See also Surface Water Streamflow and Storage Volume data.

Pool Level Data
Page 32

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Reservoir Depths
Station Number:
Name:
6688
Vineyard FRS
2
Drainage Area:
57.8 mi
Period of Record: November 1987 to current year
Depth, in feet, Water Year October 1998 to September 1999
Day
Jul. 24

Maximum levels of interest during Water Year 1999
Maximum Level (feet)
Day
Maximum Level (feet)
1.85
Aug. 28
0.65

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
0.1
2
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
3
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
4
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
5
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
6
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
7
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
8
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
9
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
10
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
11
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
12
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
13
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
14
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
15
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
16
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
17
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
18
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
19
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
20
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
21
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
22
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
23
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.4
0.0
0.0
24
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
1.7
0.0
0.0
25
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
1.3
0.0
0.0
26
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.9
0.0
0.0
27
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.6
0.2
0.0
28
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.4
0.6
0.0
29
0.0
0.0
0.0
0.0
--0.0
0.0
0.0
0.0
0.1
0.4
0.0
30
0.0
0.0
0.0
0.0
--0.0
0.0
0.0
0.0
0.1
0.2
0.0
31
0.0
--0.0
0.0
--0.0
--0.0
--0.1
0.1
-------------------------------------------------------------------------------MEAN
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.2
0.1
0.0
MAX
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
1.9
0.6
0.1
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 1999 MEAN
0.02 MAX
1.85 MIN
0.00
See also Surface Water Streamflow and Storage Volume data.

Pool Level Data
Page 33

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Reservoir Depths
Station Number:
Name:
6703
Rittenhouse FRS
2
Drainage Area:
51.3 mi
Period of Record: September 27, 1988 to current year
Depth, in feet, Water Year October 1998 to September 1999
Day
Jul. 15

Maximum levels of interest during Water Year 1999
Maximum Level (feet)
Day
Maximum Level (feet)
5.60*
Aug. 25
3.11

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.2
2
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.2
3
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
4
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
5
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
6
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
7
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
8
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
9
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
10
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
11
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
12
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
13
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
14
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
15
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.7
16
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.2
17
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
18
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.2
19
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.2
20
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.2
21
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.2
22
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
23
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.2
24
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.2
25
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.4
0.2
26
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
1.3
0.2
27
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.8
0.1
28
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.7
0.1
29
0.1
0.1
0.1
0.1
--0.1
0.1
0.1
0.1
0.1
0.4
0.1
30
0.1
0.1
0.1
0.1
--0.1
0.1
0.1
0.1
0.1
0.3
0.1
31
0.1
--0.1
0.1
--0.1
--0.1
--0.1
0.2
-------------------------------------------------------------------------------MEAN
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.2
0.2
MAX
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
3.1
1.4
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 1999 MEAN
0.14 MAX
3.11 MIN
0.13
*Gage was down due to vandalism from June 22, 1999 through July 29, 1999. A significant impound
was missed. Data for the July 15, 1999 event is from high water marks found on the staff gage.
See also Surface Water Streamflow and Storage Volume data.
Pool Level Data
Page 34

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Reservoir Depths
Station Number:
Name:
6738
Whitlow Ranch Dam
2
Drainage Area:
143 mi
Period of Record: January 8, 1998 to current year
Refer to U.S. Army Corps of Engineers, Los Angeles District for official data for this site.

Pool Level Data
Page 35

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Reservoir Depths
Station Number:
Name:
6813
Buckeye FRS #3
2
Drainage Area:
9.3 mi
Period of Record: November 23, 1992 to current year
Depth, in feet, Water Year October 1998 to September 1999
No significant impounds during Water Year 1999
-----------------------------------------------------------------------------MEAN
-4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1
MAX
-4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -3.8 -4.1 -4.1 -4.1 -4.1 -4.1
MIN
-4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1 -4.1
-----------------------------------------------------------------------------WTR YR 1999 MEAN -4.08 MAX -3.78 MIN -4.08
Note: Instrument is 4.08 feet below zero gage datum at invert of principal outlet, which is located in a
depressed drop box type inlet structure. Gage datum of 0.00 feet is taken to be the point at the top of
the drop box which is level with the ground at the inlet structure.
See also Surface Water Streamflow and Storage Volume data.

Pool Level Data
Page 36

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Reservoir Depths
Station Number:
Name:
6823
White Tanks #4 FRS
2
Drainage Area:
18.6 mi (White Tanks ADMS)
Period of Record: November 1987 to current year
Depth, in feet, Water Year October 1998 to September 1999
No recorded impoundments during Water Year 1999
-----------------------------------------------------------------------------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 1999 MEAN
0.00 MAX
0.00 MIN
0.00
See also Surface Water Streamflow and Storage Volume data.

Pool Level Data
Page 37

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Reservoir Depths
Station Number:
Name:
7133
Casandro Dam
2
Drainage Area:
1.3 mi
Period of Record: August 15, 1996 to current year
Depth, in feet, Water Year October 1998 to September 1999
Day
Aug. 31

Maximum levels of interest during Water Year 1999
Maximum Level (feet)
Day
Maximum Level (feet)
6.47
Jul. 15
6.07

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
1.5
2
0.2
0.2
0.3
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.4
3
0.2
0.2
0.3
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
4
0.2
0.2
0.3
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
5
0.2
0.2
0.3
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
6
0.2
0.2
0.3
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
7
0.2
0.2
0.3
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
8
0.2
0.2
0.3
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
0.3
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
13
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
14
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
15
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
2.3
0.2
0.2
16
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.4
0.2
0.2
17
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
18
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
19
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
20
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
21
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
22
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
23
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
24
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
25
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
26
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
27
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
28
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
29
0.2
0.2
0.2
0.2
--0.2
0.2
0.2
0.2
0.2
0.2
0.2
30
0.2
0.3
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
1.7
-------------------------------------------------------------------------------MEAN
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.3
0.2
0.2
MAX
0.2
0.3
0.4
0.2
0.2
0.2
0.2
0.2
0.2
6.1
6.5
4.4
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 1999 MEAN
0.21 MAX
6.47 MIN
0.19
See also Surface Water Streamflow and Storage Volume data.

Pool Level Data
Page 38

FCDMC Annual Surface Water Report
Water Year 1999

STORAGE VOLUME
DATA

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Storage Volumes
Station Number:
Name:
769
Tat Momolikot Cap
2
Drainage Area:
1,780 mi
Period of Record: January 21, 1998 to current year
Volume, in acre-feet, Water Year October 1998 to September 1999
Refer to U.S. Army Corps of Engineers, Los Angeles District for official data for this site.

Storage Volume Data
Page 1

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Storage Volumes
Station Number:
Name:
4562
Spookhill FRS Cap
2
Drainage Area:
13.6 mi
Period of Record: November 1987 to current year
Spillway Capacity: 1,391 acre-feet
Volume, in acre feet, Water Year October 1998 to September 1999
No recorded storage during Water Year 1999
-----------------------------------------------------------------------------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 1999 MEAN
0 MAX
0 MIN
0
See also Surface Water Streamflow and Pool Level data.

Storage Volume Data
Page 2

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Storage Volumes
Station Number:
Name:
4647
E.Fork CC #1 Cap
2
Drainage Area:
1.18 mi
Period of Record: March 2, 1994 to current year
Spillway Capacity: 59 acre-feet
Volume, in acre feet, Water Year October 1998 to September 1999

Day
Oct. 30
Jul. 15

Maximum Storage during Water Year 1999
Maximum Storage
Maximum Storage
(ac-ft) (% full)
Day
(ac-ft) (% full)
1
1.7
Jul. 14
1
1.7
1
1.7
Jul. 18
1
1.7

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
-----------------------------------------------------------------------------MEAN
0
0
0
0
0
0
0
0
0
0
0
0
MAX
1
0
0
0
0
0
0
0
0
1
0
0
MIN
0
0
0
0
0
0
0
0
0
0
0
0
-----------------------------------------------------------------------------WTR YR 1999 MEAN
0 MAX
1 MIN
0
See also Surface Water Streamflow and Pool Level data.
Storage Volume Data
Page 3

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Storage Volumes
Station Number:
Name:
4652
Tatum Basin Cap
2
Drainage Area:
2.17 mi
Period of Record: May 8, 1998 to current year
Spillway Capacity: 32.7 acre-feet
Volume, in acre feet, Water Year October 1998 to September 1999

Day
Jul. 14

One recorded storage during Water Year 1999
Maximum Storage
Maximum Storage
(ac-ft) (% full)
Day
(ac-ft) (% full)
0.9
2.8

Daily Mean Values
-----------------------------------------------------------------------------MEAN
0
0
0
0
0
0
0
0
0
0
0
0
MAX
0
0
0
0
0
0
0
0
0
1
0
0
MIN
0
0
0
0
0
0
0
0
0
0
0
0
-----------------------------------------------------------------------------WTR YR 1999 MEAN
0 MAX
1 MIN
0
See also Surface Water Streamflow and Pool Level data.

Storage Volume Data
Page 4

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Storage Volumes
Station Number:
4657
Name:
E.Fork CC #4 Cap
2
Drainage Area:
0.68 mi
Period of Record: January 18, 1994
Spillway Capacity: 74 acre-feet
Volume, in acre feet, Water Year October 1998 to September 1999

Day
Jul. 14

Maximum Storage during Water Year 1999
Maximum Storage
Maximum Storage
(ac-ft) (% full)
Day
(ac-ft) (% full)
8
11
Feb. 5
2
2.7

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
2
3
4
5
6
7
8
9
10
11
12
13
14
1
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
-----------------------------------------------------------------------------MEAN
0
0
0
0
0
0
0
0
0
0
0
0
MAX
2
0
0
0
2
0
1
0
0
8
10
1
MIN
0
0
0
0
0
0
0
0
0
0
0
0
-----------------------------------------------------------------------------WTR YR 1999 MEAN
0 MAX
10 MIN
0
See also Surface Water Streamflow and Pool Level data.

Storage Volume Data
Page 5

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Storage Volumes
Station Number:
Name:
4682
E.Fork CC #3 Cap
2
2
Drainage Area:
3.52 mi (1.86 mi controlled by EFCC#1 and EFCC#4)
Period of Record: September 13, 1994 to current year
Spillway Capacity: 175 acre-feet
Volume, in acre feet, Water Year October 1998 to September 1999

Day
Jul. 14

Maximum storage during Water Year 1999
Maximum Storage
Maximum Storage
(ac-ft) (% full)
Day
(ac-ft) (% full)
32.1
21

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
2
3
4
5
6
7
8
9
10
11
12
13
14
1
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
-----------------------------------------------------------------------------MEAN
0
0
0
0
0
0
0
0
0
0
0
0
MAX
0
0
0
0
0
0
0
0
0
32
0
0
MIN
0
0
0
0
0
0
0
0
0
0
0
0
-----------------------------------------------------------------------------WTR YR 1999 MEAN
0 MAX
32 MIN
0
See also Surface Water Streamflow and Pool Level data.

Storage Volume Data
Page 6

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Storage Volumes
Station Number:
Name:
4802
Dreamy Draw Dam Cap
2
Drainage Area:
1.3 mi
Period of Record: November 1987 to current year
Revised Records: WY1996: WY1995
Volume, in acre-feet, Water Year October 1998 to September 1999
No significant storage during Water Year 1999
-----------------------------------------------------------------------------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 1999 MEAN
0 MAX
0 MIN
0
See also Surface Water Streamflow and Pool Level data.
* Storage greater than 1 acre-foot (0.3%) begins at 8.2 feet gage height.

Storage Volume Data
Page 7

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Storage Volumes
Station Number:
Name:
4817
10 St.Wash #1 Cap
2
Drainage Area:
1.21 mi
Period of Record: November 26, 1996 to current year
Spillway Capacity: 21.64 acre-feet
Volume, in acre-feet, Water Year October 1998 to September 1999

Day
Sep. 19

Maximum storage during Water Year 1999
Maximum Storage
Maximum Storage
(ac-ft) (% full)
Day
(ac-ft) (% full)
1.94
9
Aug. 27
1.09
5

-----------------------------------------------------------------------------MEAN
0
0
0
0
0
0
0
0
0
0
0
0
MAX
0
0
0
0
0
0
0
0
0
1
1
2
MIN
0
0
0
0
0
0
0
0
0
0
0
0
-----------------------------------------------------------------------------WTR YR 1999 MEAN
0 MAX
2 MIN
0
See also Surface Water Streamflow and Pool Level data.

Storage Volume Data
Page 8

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Storage Volumes
Station Number:
Name:
4902
Cave Buttes Dam Cap
2
Drainage Area:
191 mi
Period of Record: November 1987 to current year
Spillway Capacity: 46,100 acre-feet
Volume, in acre feet, Water Year October 1998 to September 1999

Day
Jul. 15

Maximum storage during Water Year 1999
Maximum Storage
Maximum Storage
(ac-ft) (% full)
Day
(ac-ft) (% full)
482
1
Jul. 19
238
0.5

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
2
3
4
5
6
5
7
4
8
4
9
10
11
12
13
14
58
15
325
16
310
17
17
18
8
19
76
20
21
22
23
24
25
26
13
27
28
29
30
68
31
21
-----------------------------------------------------------------------------MEAN
3
0
0
0
0
0
0
0
0
26
0
0
MAX
231
0
0
0
0
0
0
0
0
482
0
0
MIN
0
0
0
0
0
0
0
0
0
0
0
0
-----------------------------------------------------------------------------WTR YR 1999 MEAN
2 MAX
482 MIN
0
See also Surface Water Streamflow and Pool Level data.

Storage Volume Data
Page 9

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Storage Volumes
Station Number:
Name:
5112
Saddleback FRS Cap
2
Drainage Area:
29.6 mi
Period of Record: December 16, 1988 to current year
Spillway Capacity: 6,743 acre-feet
Volume, in acre feet, Water Year October 1998 to September 1999
No recorded storage during Water Year 1999
-----------------------------------------------------------------------------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 1999 MEAN
0 MAX
0 MIN
0
See also Surface Water Streamflow and Pool Level data.

Storage Volume Data
Page 10

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Storage Volumes
Station Number:
Name:
5127
Harquahala FRS Cap
2
Drainage Area:
102.3 mi
Period of Record: March 1, 1994 to current year
Spillway Capacity: 8,689 acre-feet
Volume, in acre feet, Water Year October 1998 to September 1999

Day
Sep. 11

Maximum storage during Water Year 1999
Maximum Storage
Maximum Storage
Day
(ac-ft) (% full)
(ac-ft) (% full)
23
0.3

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
2
3
4
5
6
7
8
9
10
11
1
12
16
13
10
14
7
15
5
16
3
17
2
18
1
19
1
20
1
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
23
MIN
0
0
0
0
0
0
0
0
0
0
0
0
-----------------------------------------------------------------------------WTR YR 1999 MEAN
0 MAX
23 MIN
0
See also Surface Water Streamflow and Pool Level data.

Storage Volume Data
Page 11

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Storage Volumes
Station Number:
Name:
5202
Buckeye FRS #1 Cap
2
Drainage Area:
74 mi without area from Buckeye FRS #2 and #3
Period of Record: November 1987 to current year
Spillway Capacity: 8,105 acre-feet
Volume, in acre-feet, Water Year October 1998 to September 1999

Day
Jul. 11

Maximum storage during Water Year 1999
Maximum Storage
Maximum Storage
(ac-ft) (% full)
Day
(ac-ft) (% full)
59
0.7

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
2
3
4
5
6
7
8
9
10
1
11
14
12
2
13
14
10
15
10
16
3
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
-----------------------------------------------------------------------------MEAN
0
0
0
0
0
0
0
0
0
1
0
0
MAX
0
0
0
0
0
0
0
0
0
59
0
0
MIN
0
0
0
0
0
0
0
0
0
0
0
0
-----------------------------------------------------------------------------WTR YR 1999 MEAN
0 MAX
59 MIN
0
See also Surface Water Streamflow and Pool Level data.

Storage Volume Data
Page 12

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Storage Volumes
Station Number:
Name:
5207
Buckeye FRS #2 Cap
2
Drainage Area:
5.7 mi without area from Buckeye FRS #3
Period of Record: November 11, 1992 to current year
Spillway Capacity: 824 acre-feet
Volume, in acre-feet, Water Year October 1998 to September 1999
One recorded storage during Water Year 1999
Maximum Storage
Maximum Storage
Day
(ac-ft) (% full)
Day
(ac-ft) (% full)
Jul. 8
5
0.6
Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
2
3
4
5
6
7
8
1
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
-----------------------------------------------------------------------------MEAN
0
0
0
0
0
0
0
0
0
0
0
0
MAX
0
0
0
0
0
0
0
0
0
5
0
0
MIN
0
0
0
0
0
0
0
0
0
0
0
0
-----------------------------------------------------------------------------WTR YR 1999 MEAN
0 MAX
5 MIN
0
See also Surface Water Streamflow and Pool Level data.

Storage Volume Data
Page 13

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Storage Volumes
Station Number:
Name:
5232
Sunset FRS Cap
2
Drainage Area:
0.95 mi (from Wickenburg ADMS)
Period of Record: February 12, 1989 to current year
Spillway Capacity: 86 acre-feet
Volume, in acre feet, Water Year October 1998 to September 1999

Day
Jul. 15

Maximum storage during Water Year 1999
Maximum Storage
Maximum Storage
Day
(ac-ft) (% full)
(ac-ft) (% full)
10
12
Aug. 31
9
10

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
1
7
2
1
1
1
3
1
1
4
1
1
5
1
6
1
7
8
9
10
11
12
13
14
15
7
16
8
17
7
18
6
19
5
20
4
21
4
22
3
23
2
24
2
25
1
26
1
27
1
28
1
29
1
2
30
1
1
31
1
1
3
-----------------------------------------------------------------------------MEAN
0
0
0
0
0
0
0
0
0
2
0
0
MAX
1
0
0
0
0
0
1
0
0
10
9
9
MIN
0
0
0
0
0
0
0
0
0
0
0
0
-----------------------------------------------------------------------------WTR YR 1999 MEAN
0 MAX
10 MIN
0
See also Surface Water Streamflow and Pool Level data.
Storage Volume Data
Page 14

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Storage Volumes
Station Number:
Name:
5247
Sunnycove FRS Cap
2
Drainage Area:
0.98 mi (from Wickenburg ADMS)
Period of Record: November 1987 to current year
Spillway Capacity: 216 acre-feet
Volume, in acre feet, Water Year October 1998 to September 1999

Day
Jul. 15

Maximum storage during Water Year 1999
Maximum Storage
Maximum Storage
(ac-ft) (% full)
Day
(ac-ft) (% full)
8
3.7
Aug. 31
5
2.3

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
4
16
1
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
1
-----------------------------------------------------------------------------MEAN
0
0
0
0
0
0
0
0
0
0
0
0
MAX
1
0
0
0
0
0
0
0
0
8
5
3
MIN
0
0
0
0
0
0
0
0
0
0
0
0
-----------------------------------------------------------------------------WTR YR 1999 MEAN
0 MAX
8 MIN
0
See also Surface Water Streamflow and Pool Level data.
Storage Volume Data
Page 15

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Storage Volumes
Station Number:
Name:
5417
White Tanks #3 Cap
2
Drainage Area:
20.5 mi (White Tanks ADMS)
Period of Record: November 1987 to current year
Spillway Capacity: 3,134 acre-feet
Volume, in acre feet, Water Year October 1998 to September 1999

Day
Apr. 2

Maximum storage during Water Year 1999
Maximum Storage
Maximum Storage
(ac-ft) (% full)
Day
(ac-ft) (% full)
137
4.4

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
2
126
3
1
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
-----------------------------------------------------------------------------MEAN
0
0
0
0
0
0
8
--0
0
0
0
MAX
0
0
0
0
0
0
137
--0
0
0
0
MIN
0
0
0
0
0
0
0
--0
0
0
0
-----------------------------------------------------------------------------WTR YR 1999 MEAN
0 MAX
137 MIN
0
Gage was down during all of May 1999. No events were missed.
See also Surface Water Streamflow and Pool Level data.
Storage Volume Data
Page 16

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Storage Volumes
Station Number:
Name:
5447
McMicken Dam Cap
2
Drainage Area:
247 mi
Period of Record: November 1987 to current year
Spillway Capacity: 20,070 acre-feet
Volume, in acre feet, Water Year October 1998 to September 1999
No recorded storage during Water Year 1999
-----------------------------------------------------------------------------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 1999 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 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Storage Volumes
Station Number:
Name:
5537
Adobe Dam Cap
2
Drainage Area:
89.6 mi
Period of Record: November 1987 to current year
Spillway Capacity: 18,776 acre-feet
Volume, in acre feet, Water Year October 1998 to September 1999

Day
Jul. 15

Maximum storage during Water Year 1999
Maximum Storage
Maximum Storage
(ac-ft) (% full)
Day
(ac-ft) (% full)
134
0.7

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
2
3
4
5
6
7
8
9
10
11
12
13
14
11
15
61
16
8
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
3
0
0
MAX
0
0
0
0
0
0
0
0
0
134
0
0
MIN
0
0
0
0
0
0
0
0
0
0
0
0
-----------------------------------------------------------------------------WTR YR 1999 MEAN
0 MAX
134 MIN
0
See also Surface Water Streamflow and Pool Level data.

Storage Volume Data
Page 18

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Storage Volumes
Station Number:
Name:
5612
New River Dam Cap
2
Drainage Area:
164 mi
Period of Record: November 1987 to current year
Spillway Capacity: 43,700 acre-feet
Volume, in acre feet, Water Year October 1998 to September 1999

Day
Jul. 15

Maximum storage during Water Year 1999
Maximum Storage
Maximum Storage
(ac-ft) (% full)
Day
(ac-ft) (% full)
236
0.5

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
2
3
4
5
6
7
8
9
10
11
12
13
14
9
15
130
16
53
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
6
0
0
MAX
0
0
0
0
0
0
0
0
0
236
0
0
MIN
0
0
0
0
0
0
0
0
0
0
0
0
-----------------------------------------------------------------------------WTR YR 1999 MEAN
1 MAX
236 MIN
0
See also Surface Water Streamflow and Pool Level data.

Storage Volume Data
Page 19

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Storage Volumes
Station Number:
Name:
5967
StoneRidge Dam Cap
2
Drainage Area:
0.86 mi
Period of Record: December 11, 1996 to current year
Spillway Capacity: 66.2 acre-feet
Volume, in acre feet, Water Year October 1998 to September 1999

Day
Aug. 31

Maximum storage during Water Year 1999
Maximum Storage
Maximum Storage
(ac-ft) (% full)
Day
(ac-ft) (% full)
0.7
1
Jul. 23
0.6
0.9

-----------------------------------------------------------------------------MEAN
0
0
0
0
0
0
0
0
0
0
0
0
MAX
0
0
0
0
0
0
0
0
0
1
1
0
MIN
0
0
0
0
0
0
0
0
0
0
0
0
-----------------------------------------------------------------------------WTR YR 1999 MEAN
0 MAX
1 MIN
0
See also Surface Water Streamflow and Pool Level data.

Storage Volume Data
Page 20

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Storage Volumes
Station Number:
Name:
5972
SunRidge Canyon Cap
2
Drainage Area:
1.6 mi
Period of Record: February 4, 1997 to current year
Spillway Capacity: 94 acre-feet
Volume, in acre feet, Water Year October 1998 to September 1999

Day
Oct. 26

Maximum storage during Water Year 1999
Maximum Storage
Maximum Storage
(ac-ft) (% full)
Day
(ac-ft) (% full)
0.2
0.2

-----------------------------------------------------------------------------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 1999 MEAN
0 MAX
0 MIN
0
See also Surface Water Streamflow and Pool Level data.

Storage Volume Data
Page 21

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Storage Volumes
Station Number:
Drainage Area:

Name:
5977
GoldenEaglePark Cap
2
2
7.13 mi of which 2.02 mi , 2.13 mi2, and 1.6 mi2 are controlled by
Aspen, North Heights, and SunRidge Canyon Dams, respectively.
Period of Record: December 12, 1996 to current year
Spillway Capacity: 95 acre-feet
Volume, in acre feet, Water Year October 1998 to September 1999

Day
Oct. 26

Maximum storage during Water Year 1999
Maximum Storage
Maximum Storage
(ac-ft) (% full)
Day
(ac-ft) (% full)
10.3
11

-----------------------------------------------------------------------------MEAN
0
0
0
0
0
0
0
0
0
0
0
0
MAX
10
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 1999 MEAN
0 MAX
10 MIN
0
See also Surface Water Streamflow and Pool Level data.

Storage Volume Data
Page 22

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Storage Volumes
Station Number:
Name:
5982
N. Heights Dam Cap
2
Drainage Area:
2.13 mi
Period of Record: October 11, 1996
Spillway Capacity: 138 acre-feet
Volume, in acre feet, Water Year October 1998 to September 1999

Day
Oct. 26

Maximum storage during Water Year 1999
Maximum Storage
Maximum Storage
(ac-ft) (% full)
Day
(ac-ft) (% full)
8.3
6

-----------------------------------------------------------------------------MEAN
0
0
0
0
0
0
0
0
0
0
0
0
MAX
8
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 1999 MEAN
0 MAX
8 MIN
0
See also Surface Water Streamflow and Pool Level data.

Storage Volume Data
Page 23

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Storage Volumes
Station Number:
Name:
5987
Aspen Dam Cap
2
Drainage Area:
2.02 mi
Period of Record: January 2, 1997 to current year
Spillway Capacity: 183 acre-feet
Volume, in acre feet, Water Year October 1998 to September 1999

Day
Oct. 26

Maximum storage during Water Year 1999
Maximum Storage
Maximum Storage
(ac-ft) (% full)
Day
(ac-ft) (% full)
1.9
1

-----------------------------------------------------------------------------MEAN
0
0
0
0
0
0
0
0
0
0
0
0
MAX
2
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 1999 MEAN
0 MAX
2 MIN
0
See also Surface Water Streamflow and Pool Level data.

Storage Volume Data
Page 24

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Storage Volumes
Station Number:
Name:
5992
Hesperus Dam Cap
2
Drainage Area:
2.91 mi
Period of Record: December 18, 1996 to current year
Spillway Capacity: 276 acre-feet
Volume, in acre feet, Water Year October 1998 to September 1999
No significant storage during Water Year 1999
-----------------------------------------------------------------------------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 1999 MEAN
0 MAX
0 MIN
0
See also Surface Water Streamflow and Pool Level data.

Storage Volume Data
Page 25

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Storage Volumes
Station Number:
Name:
6502
Guadalupe FRS Cap
2
Drainage Area:
1.87 mi
Period of Record: June 29, 1989 to current year
Spillway Capacity: 329 acre-feet
Volume, in acre-feet, Water Year October 1998 to September 1999

Day
Jul. 15

Maximum storage during Water Year 1999
Maximum Storage
Maximum Storage
(ac-ft) (% full)
Day
(ac-ft) (% full)
10
3

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
6
16
2
17
18
19
20
21
22
23
24
25
26
27
28
29
30
4
31
3
-----------------------------------------------------------------------------MEAN
0
0
0
0
0
0
0
0
0
0
0
0
MAX
0
0
0
0
0
0
0
0
0
10
8
0
MIN
0
0
0
0
0
0
0
0
0
0
0
0
-----------------------------------------------------------------------------WTR YR 1999 MEAN
0 MAX
10 MIN
0
See also Surface Water Streamflow and Pool Level data.

Storage Volume Data
Page 26

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Storage Volumes
Station Number:
Drainage Area:

Name:
6608
Freestone Basin
2
4.26 mi (area downstream of Eastern Canal only, does not include
area from overflows of Eastern Canal)
Period of Record: December 19, 1995 to current year
Spillway Capacity: 218 acre-feet
Volume, in acre feet, Water Year October 1998 to September 1999

Day
Aug. 28

Maximum storage during Water Year 1999
Maximum Storage
Maximum Storage
Day
(ac-ft) (% full)
(ac-ft) (% full)
36.8
17
Sep. 3
25.4
12

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
2
1
6
3
2
1
2
1
----6
2
2
2
3
3
2
1
6
1
----1
3
2
3
1
3
2
1
1
1
----4
2
2
1
3
2
2
3
1
----1
1
5
2
2
1
1
2
1
2
1
----2
6
1
1
2
2
1
2
1
----1
2
7
2
3
1
3
1
1
1
----1
1
8
1
2
1
1
1
2
1
1
----2
1
9
1
1
2
3
1
1
----1
10
1
1
2
2
2
1
----11
1
1
2
2
1
2
3
1
----12
1
2
2
2
1
3
2
1
----13
1
2
2
3
1
3
1
1
----14
1
2
2
3
1
3
2
1
----15
1
2
2
2
1
2
2
1
----2
16
1
2
1
1
1
2
1
----17
2
1
3
1
1
1
1
----18
1
2
3
3
2
1
2
1
----1
19
1
2
4
3
1
2
1
1
----2
20
1
1
4
1
1
2
1
--2
6
21
2
4
1
1
4
1
----3
1
22
2
2
1
1
3
1
----4
1
23
2
1
1
2
2
2
----4
1
24
2
2
1
2
2
2
1
----4
1
25
5
3
1
2
1
2
1
----4
1
26
6
3
1
1
2
1
----2
1
27
2
4
1
1
1
3
----1
1
28
2
4
1
1
1
4
1
----1
1
1
29
2
6
2
2
1
1
----3
1
30
2
6
2
2
1
----4
31
2
2
1
1
----3
-------------------------------------------------------------------------------MEAN
2
2
2
2
1
2
1
0
--2
0
1
MAX
10
6
7
5
3
5
9
0
--15
37
25
MIN
0
0
0
0
0
0
0
0
--0
0
0
-----------------------------------------------------------------------------WTR YR 1999 MEAN
1 MAX
37 MIN
0
Gage was down from May 21 through July 19, 1999. Two events in July were missed.
See also Pool Level data.
Many days of storage from irrigation tailwater. The gage is located inside a pump housing that, when
stage reaches a certain level, pumps water from the gage house and basin. The daily stage values
fluctuate substantially. Gage Heights above 10.0 feet are generally caused by storm events.

Storage Volume Data
Page 27

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Storage Volumes
Station Number:
Drainage Area:

Name:
6623
Crossroads Park
2
15.7 mi (area downstream of US 60 only, does not include area from
Eastern Canal tailwater ditch under US 60.)
Period of Record: December 18, 1995 to current year
Spillway Capacity: 456 acre-feet
Volume, in acre feet, Water Year October 1998 to September 1999

Day
Sep. 1

Maximum storage during Water Year 1999
Maximum Storage
Maximum Storage
(ac-ft) (% full)
Day
(ac-ft) (% full)
16.3
3.5

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
12
2
12
3
5
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
2
-----------------------------------------------------------------------------MEAN
0
0
0
0
0
0
0
0
0
0
0
1
MAX
0
0
0
0
0
0
0
0
0
0
16
16
MIN
0
0
0
0
0
0
0
0
0
0
0
0
-----------------------------------------------------------------------------WTR YR 1999 MEAN
0 MAX
16 MIN
0
See also Pool Level data.
Storage Volume Data
Page 28

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Storage Volumes
Station Number:
Name:
6627
Signal Butte FRS Cap
2
Drainage Area:
16.4 mi not including area from Apache Junction FRS
Period of Record: November 10, 1987 to current year
Spillway Capacity: 1,665 acre-feet
Volume, in acre feet, Water Year October 1998 to September 1999

Day
Jul. 24

Maximum storage during Water Year 1999
Maximum Storage
Maximum Storage
(ac-ft) (% full)
Day
(ac-ft) (% full)
28
1.7
Sep. 20
26
1.6

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
4
1
2
4
1
3
3
4
3
5
2
6
2
7
2
8
2
9
1
10
1
11
12
13
14
15
16
17
18
19
6
20
25
21
19
22
15
23
2
11
24
25
9
25
24
7
26
17
6
27
14
5
28
9
4
29
8
3
30
6
3
31
5
1
-----------------------------------------------------------------------------MEAN
0
0
0
0
0
0
0
0
0
4
1
4
MAX
0
0
0
0
0
0
0
0
0
28
7
26
MIN
0
0
0
0
0
0
0
0
0
0
0
0
-----------------------------------------------------------------------------WTR YR 1999 MEAN
1 MAX
28 MIN
0
Note: Level never above ungated outlet during Water Year 1999.
See also Surface Water Streamflow and Pool Level data.

Storage Volume Data
Page 29

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Storage Volumes
Station Number:
Name:
6672
Apache Jct. FRS Cap
2
Drainage Area:
5.8 mi
Period of Record: November 1987 to current year
Spillway Capacity: 676 acre-feet
Volume, in acre feet, Water Year October 1998 to September 1999

Day
Jul. 23

Maximum storage during Water Year 1999
Maximum Storage
Maximum Storage
(ac-ft) (% full)
Day
(ac-ft) (% full)
15
2.2

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
3
24
4
25
26
27
28
29
30
31
-----------------------------------------------------------------------------MEAN
0
0
0
0
0
0
0
0
0
0
0
0
MAX
0
0
0
0
0
0
0
0
0
15
0
0
MIN
0
0
0
0
0
0
0
0
0
0
0
0
-----------------------------------------------------------------------------WTR YR 1999 MEAN
0 MAX
15 MIN
0
See also Surface Water Streanflow and Pool Level data.

Storage Volume Data
Page 30

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Storage Volumes
Station Number:
Name:
6682
Powerline FRS Cap
2
Drainage Area:
49.9 mi
Period of Record: December 3, 1992 to current year
Spillway Capacity: 4,064 acre-feet
Volume, in acre feet, Water Year October 1998 to September 1999
No significant impoundments during Water Year 1999
-----------------------------------------------------------------------------MEAN
0
0
0
0
0
0
0
0
0
1
0
0
MAX
0
0
0
0
0
0
5
0
0
15
6
0
MIN
0
0
0
0
0
0
0
0
0
0
0
0
-----------------------------------------------------------------------------WTR YR 1999 MEAN
0 MAX
15 MIN
0
See also Surface Water Streamflow and Pool Level data.

Storage Volume Data
Page 31

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Storage Volumes
Station Number:
Name:
6687
Vineyard FRS Cap
2
Drainage Area:
57.8 mi
Period of Record: November 1987 to current year
Spillway Capacity: 3,531 acre-feet
Volume, in acre-feet, Water Year October 1998 to September 1999

Day
Jul. 24

Maximum storage during Water Year 1999
Maximum Storage
Maximum Storage
(ac-ft) (% full)
Day
(ac-ft) (% full)
143
4
Aug. 28
29
0.8

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
5
2
3
2
3
5
4
3
5
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
21
24
121
25
107
26
91
27
26
8
28
19
28
29
19
18
30
11
8
31
6
-----------------------------------------------------------------------------MEAN
0
0
0
0
0
0
1
0
0
14
2
0
MAX
0
0
0
0
0
0
5
0
0
143
29
0
MIN
0
0
0
0
0
0
0
0
0
0
0
0
-----------------------------------------------------------------------------WTR YR 1999 MEAN
1 MAX
143 MIN
0
See also Surface Water Streamflow and Pool Level data.

Storage Volume Data
Page 32

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Storage Volumes
Station Number:
Name:
6702
Rittenhouse FRS Cap
Drainage Area:
51.3 mi2
Period of Record:
September 27, 1988 to current year
Spillway Capacity:
3,475 acre-feet
Volume, in acre-feet, Water Year October 1998 to September 1999

Day
Jul. 15*

Maximum impoundments of interest during Water Year 1999
Maximum Storage
(ac-ft)
(% full)
61
1.8

-----------------------------------------------------------------------------MEAN
0
0
0
0
0
0
0
0
0
0
0
0
MAX
0
0
0
0
0
0
0
0
0
0
3
1
MIN
0
0
0
0
0
0
0
0
0
0
0
0
-----------------------------------------------------------------------------WTR YR 1999 MEAN
0 MAX
3 MIN
0
*Gage was down due to vandalism from June 22, 1999 through July 29, 1999. A significant impound
was missed. Data for the July 15, 1999 event is from rated data and high water marks found on the
staff gage.

Storage Volume Data
Page 33

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Storage Volumes
Station Number:
Name:
6739
Whitlow Ranch Cap
2
Drainage Area:
143 mi
Period of Record: January 8, 1998 to current year
Refer to U.S. Army Corps of Engineers, Los Angeles District for official data for this site.

Storage Volume Data
Page 34

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Storage Volumes
Station Number:
Name:
6812
Buckeye FRS #3 Cap
2
Drainage Area:
9.3 mi
Period of Record: November 23, 1992 to current year
Spillway Capacity: 1,286 acre-feet
Volume, in acre-feet, Water Year October 1998 to September 1999
No recorded storage during Water Year 1999
-----------------------------------------------------------------------------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 1999 MEAN
0 MAX
0 MIN
0
See also Surface Water Streamflow and Pool Level data.

Storage Volume Data
Page 35

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Storage Volumes
Station Number:
Name:
6822
White Tanks #4 Cap
2
Drainage Area:
18.6 mi (from White Tanks ADMS)
Period of Record: November 1987 to current year
Spillway Capacity: 1,243 acre-feet
Volume, in acre feet, Water Year October 1998 to September 1999
No recorded storage during Water Year 1999
-----------------------------------------------------------------------------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 1999 MEAN
0 MAX
0 MIN
0
See also Surface Water Streamflow and Pool Level data.

Storage Volume Data
Page 36

FCDMC Annual Surface Water Report
Water Year 1999

Flood Control District of Maricopa County ALERT System
Computation of Continuous Records of Storage Volumes
Station Number:
Name:
7132
Casandro Dam Cap
2
Drainage Area:
1.3 mi
Period of Record: August 15, 1996 to current year
Spillway Capacity: 143 acre-feet
Volume, in acre feet, Water Year October 1998 to September 1999

Day
Aug. 31

Maximum storage during Water Year 1999
Maximum Storage
Maximum Storage
(ac-ft) (% full)
Day
(ac-ft) (% full)
24.6
17
Jul. 15
22.6
16

Daily Mean Values
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
-----------------------------------------------------------------------------1
4
2
3
4
5
6
7
8
9
10
11
12
13
14
15
7
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
6
-----------------------------------------------------------------------------MEAN
0
0
0
0
0
0
0
0
0
0
0
0
MAX
0
0
0
0
0
0
0
0
0
23
25
15
MIN
0
0
0
0
0
0
0
0
0
0
0
0
-----------------------------------------------------------------------------WTR YR 1999 MEAN
0 MAX
25 MIN
0
See also Surface Water Streamflow and Pool Level data.

Storage Volume Data
Page 37

FCDMC Annual Surface Water Report
Water Year 1999

This page intentionally blank.

Storage Volume Data
Page 38

FCDMC Annual Surface Water Report
Water Year 1999

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):

Flood Control District of Maricopa County
Flood Warning and Data Collection Branch
2801 W. Durango Street
Phoenix, Arizona 85009

Flood Control District of Maricopa County
Flood Warning and Data Collection Branch
2801 W. Durango Street
Phoenix, Arizona 85009

Place
Stamp
Here