1999 California Hydrologic Data Report
10259100 WHITEWATER RIVER AT RANCHO MIRAGE, CA - 1999 WY


                                10259100 WHITEWATER RIVER AT RANCHO MIRAGE, CA

LOCATION.-Lat 33°44'58", long 116°25'19", in NW 1/4 SW 1/4 sec.12, T.5 S., R.5 E., Riverside County,
Hydrologic Unit 18100200, on right bank, 0.2 mi upstream from Magnesia Spring Canyon storm channel, and 2.7 mi
northwest of the intersection of Highways 111 and 74. 
DRAINAGE AREA.-588 mi2. 
PERIOD OF RECORD.-March 1989 to current year. 
REVISED RECORDS.-WDR CA-93-1: 1989-92(M).  WDR CA-95-1: 1993, 1993(M). 
GAGE.-Water-stage recorder, crest-stage gage, and concrete control.  Elevation of gage is 230 ft above sea level,
from topographic map.  Prior to Dec. 4, 1997, at datum 10.00 ft lower.
REMARKS.-Records good.  No regulation upstream from station.  Water diverted from tributary streams for municipal
supply in vicinity of Palm Springs.  Water from the Colorado River Basin is imported for ground-water recharge
and irrigation.  See schematic diagram of Salton Sea Basin. 
EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 9,060 ft3/s, Jan. 7, 1993, gage height, 5.93 ft,
datum then in use, from rating curve extended above 1,460 ft3/s on basis of critical depth
computations; maximum gage height, 8.09 ft (present datum), Feb. 14, 1998; no flow for many days in each year. 

                  DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1998 TO SEPTEMBER 1999

                                               DAILY MEAN VALUES
 
DAY       OCT      NOV      DEC      JAN      FEB      MAR      APR      MAY      JUN      JUL      AUG      SEP
 
  1       .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00
  2       .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00
  3       .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00
  4       .00      .00      .00      .00      .38      .00      .00      .00      .00      .00      .00      .00
  5       .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00
 
  6       .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00
  7       .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00
  8       .00      .00      .00      .00      .00      .00      .00      .00      .00     1.5       .00      .00
  9       .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00
 10       .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00
 
 11       .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00
 12       .00      .00      .00      .00      .00      .00      .00      .00      .00      .01      .00      .00
 13       .00      .00      .00      .00      .00      .00      .00      .00      .00     5.7       .00      .00
 14       .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00
 15       .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00
 
 16       .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00
 17       .00      .00      .00      .00      .04      .00      .00      .00      .00      .00      .00      .00
 18       .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00
 19       .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00
 20       .00      .00      .04      .00      .00      .00      .00      .00      .00      .00      .00      .00
 
 21       .00      .00      .00      .01      .00      .00      .00      .00      .00      .00      .00      .00
 22       .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00
 23       .00      .00      .00      .00      .10      .00      .00      .00      .00      .00      .00      .00
 24       .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00
 25       .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00
 
 26       .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00
 27       .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00
 28       .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00
 29       .00      .00      .00      .00      ---      .00      .00      .00      .00      .00      .00      .00
 30       .00      .00      .00      .00      ---      .00      .00      .00      .00      .00      .00      .00
 31       .00      ---      .00      .00      ---      .01      ---      .00      ---      .00      .00      ---
 
TOTAL    0.00     0.00     0.04     0.01     0.52     0.01     0.00     0.00     0.00     7.21     0.00     0.00
MEAN     .000     .000     .001     .000     .019     .000     .000     .000     .000      .23     .000     .000
MAX       .00      .00      .04      .01      .38      .01      .00      .00      .00      5.7      .00      .00
MIN       .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00
AC-FT     .00      .00      .08      .02      1.0      .02      .00      .00      .00       14      .00      .00


STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1989 - 1999, BY WATER YEAR (WY) OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP MEAN .003 .003 .033 32.9 7.39 7.54 .038 .034 .008 .025 .11 .18 MAX .016 .021 .18 310 52.3 66.0 .21 .27 .051 .23 .78 1.30 (WY) 1993 1990 1993 1993 1993 1995 1993 1993 1998 1999 1989 1995 MIN .000 .000 .000 .000 .000 .000 .000 .000 .000 .000 .000 .000 (WY) 1990 1991 1994 1994 1997 1990 1989 1989 1989 1989 1990 1989 SUMMARY STATISTICS FOR 1998 CALENDAR YEAR FOR 1999 WATER YEAR WATER YEARS 1989 - 1999 ANNUAL TOTAL 344.08 7.79 ANNUAL MEAN .94 .021 4.03 HIGHEST ANNUAL MEAN 30.4 1993 LOWEST ANNUAL MEAN .002 1996 HIGHEST DAILY MEAN 123 Feb 14 5.7 Jul 13 2950 Jan 16 1993 LOWEST DAILY MEAN .00 Jan 1 .00 Oct 1 .00 Mar 30 1989 ANNUAL SEVEN-DAY MINIMUM .00 Jan 1 .00 Oct 1 .00 Mar 30 1989 INSTANTANEOUS PEAK FLOW 165 Jul 13 9060 Jan 7 1993 INSTANTANEOUS PEAK STAGE 7.28 Jul 13 8.09 Feb 14 1998 ANNUAL RUNOFF (AC-FT) 682 15 2920 10 PERCENT EXCEEDS .00 .00 .00 50 PERCENT EXCEEDS .00 .00 .00 90 PERCENT EXCEEDS .00 .00 .00


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