10257550 WHITEWATER RIVER AT WINDY POINT, NEAR WHITE WATER, CA
LOCATION.--Lat 33°53'56", long 116°37'13", in SW 1/4 NE 1/4 sec.24, T.3 S., R.3 E., Riverside County, Hydrologic
Unit 18100200, on right bank 200 ft north of Highway 111, 2.0 mi southeast of White Water, and 3.8 mi east of
the junction of Highway 111 and Interstate 10.
DRAINAGE AREA.--264 mi2.
PERIOD OF RECORD.--October 1984 to September 1987, October 1989 to current year. Discharge measurements only,
October 1987 to September 1989. Discharge measurements for the period July 1982 to September 1984 available
in files of the U.S. Geological Survey.
REVISED RECORDS.--WDR CA-88-1: Drainage area.
GAGE.--Water-stage recorder and concrete control; auxiliary water-stage recorder on overflow channel since
January 23, 1992. Elevation of gage is 1,040 ft above sea level, from topographic map.
REMARKS.--Records good. Imported water is released to the Whitewater River from the Colorado River Aqueduct at a
point 2.75 mi upstream for ground-water recharge in the upper Coachella Valley. Water is diverted out of the
basin 18.5 mi upstream to powerplants in the San Gorgonio River basin and then to an area north of Banning for
irrigation. See schematic diagram of Salton Sea basin.
COOPERATION.--Records of diversion out of basin provided by Southern California Edison Co. Records of Colorado
River Aqueduct releases provided by Coachella Valley Water District (from Metropolitan Water District's
monthly reports).
EXTREMES FOR PERIOD OF RECORD.--Maximum computed discharge, 2,530 ft3/s, Jan. 10, 1995, gage height, 8.32 ft,
main channel, from rating curve extended above 400 ft3/s on basis of critical-depth computation (flow in
overflow channel at peak); maximum probably exceeded during flood of Jan. 16, 1993, but discharge is unknown;
no flow for several days in most years.
DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1995 TO SEPTEMBER 1996
DAILY MEAN VALUES
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
1 138 170 5.7 8.7 77 24 11 251 250 222 258 .00
2 138 149 5.4 8.8 28 23 14 253 247 219 259 .00
3 137 112 5.7 8.8 23 23 12 254 227 140 255 148
4 139 173 5.7 9.0 19 21 15 256 216 .00 255 264
5 137 173 5.1 9.1 14 63 19 203 215 .00 257 262
6 141 173 5.0 9.6 12 36 9.2 174 217 .00 255 259
7 142 177 4.2 8.6 13 34 5.5 255 225 .00 255 271
8 143 169 5.2 7.9 55 31 103 257 222 139 258 291
9 145 173 5.4 6.6 6.1 30 187 254 223 245 254 280
10 148 173 5.6 6.1 4.7 23 186 254 218 247 233 280
11 147 175 6.4 6.0 3.9 25 189 257 218 234 252 279
12 147 177 6.3 7.5 3.5 29 190 256 217 234 247 278
13 149 175 10 8.1 3.4 39 191 228 216 235 248 269
14 148 176 14 8.1 2.7 32 189 200 216 234 247 274
15 149 178 9.2 7.5 2.6 28 206 209 215 232 252 273
16 143 177 8.5 5.5 2.3 28 229 209 214 231 251 265
17 150 176 12 9.8 2.3 25 280 215 212 230 249 264
18 150 77 14 9.9 2.1 24 269 220 207 230 248 261
19 154 5.8 14 12 2.5 24 279 216 216 230 249 263
20 136 6.1 12 14 57 21 293 218 213 229 248 260
21 155 6.4 12 13 128 18 291 220 213 231 248 260
22 159 6.9 14 38 59 15 286 223 214 232 251 254
23 160 7.2 16 21 47 28 279 227 215 229 251 258
24 160 6.2 15 16 46 32 267 97 213 233 249 259
25 162 6.3 14 13 52 27 256 .67 214 230 243 258
26 162 5.1 12 14 42 29 258 .00 215 229 243 253
27 163 7.8 10 14 27 24 255 .00 216 231 244 260
28 166 8.8 10 12 25 13 262 133 224 243 247 261
29 167 7.1 9.6 12 26 12 260 247 227 287 248 260
30 166 5.4 9.3 11 --- 11 258 245 225 271 165 259
31 168 --- 8.4 70 --- 11 --- 249 --- 258 .00 ---
TOTAL 4669 3032.1 289.7 405.6 786.1 803 5548.7 6280.67 6580 6205.00 7419.00 7323.00
MEAN 151 101 9.35 13.1 27.1 25.9 185 203 219 200 239 244
MAX 168 178 16 70 128 63 293 257 250 287 259 291
MIN 136 5.1 4.2 5.5 2.1 11 5.5 .00 207 .00 .00 .00
AC-FT 9260 6010 575 805 1560 1590 11010 12460 13050 12310 14720 14530
a 10610 5970 0 11 113 0 10210 18340 17670 15660 17960 16370
b 274 175 152 173 142 200 162 147 98 116 132 132
a Discharge, in acre-feet, of imported water released to river 2.75 mi upstream.
b Discharge, in acre-feet, diverted out of basin 18.5 mi upstream.
10257550 WHITEWATER RIVER AT WINDY POINT, NEAR WHITE WATER, CA--Continued
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1985 - 1996, BY WATER YEAR (WY)
OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
MEAN 133 132 105 145 129 135 126 87.0 108 95.1 102 129
MAX 596 499 477 598 595 445 316 314 423 417 378 463
(WY) 1987 1987 1987 1987 1987 1987 1986 1986 1986 1986 1986 1986
MIN .025 .000 .000 .000 3.16 3.97 .026 .000 .000 .000 .000 .000
(WY) 1992 1992 1990 1992 1991 1989 1991 1987 1987 1989 1987 1991
SUMMARY STATISTICS FOR 1995 CALENDAR YEAR FOR 1996 WATER YEAR WATER YEARS 1985 - 1996
ANNUAL TOTAL 37690.20 49341.87
ANNUAL MEAN 103 135 129
HIGHEST ANNUAL MEAN 308 1986
LOWEST ANNUAL MEAN 11.9 1991
HIGHEST DAILY MEAN 363 Feb 14 293 Apr 20 2600 Jan 7 1993
LOWEST DAILY MEAN .00 Jan 14 .00 May 26 .00 Mar 4 1985
ANNUAL SEVEN-DAY MINIMUM .00 Jan 14 2.6 Feb 13 .00 Feb 16 1986
INSTANTANEOUS PEAK FLOW 325 Sep 7 2530 Jan 10 1995
INSTANTANEOUS PEAK STAGE 4.86 Sep 7 (a) 8.32 Jan 10 1995
ANNUAL RUNOFF (AC-FT) 74760 97870 93120
10 PERCENT EXCEEDS 189 258 340
50 PERCENT EXCEEDS 121 160 16
90 PERCENT EXCEEDS 6.3 6.1 .00
(a) Peak stage in main channel; portion of flow occurred in overflow channel.
USGS Water Resources of California
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