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. 
REMARKS.-Records good except for estimated daily discharges, which are poor.  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, from rating curve extended above 
  1,460 ft3/s on basis of critical depth computations; no flow for many days in each year. 

                  DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997

                                               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     e.00     e.00
  2       .00      .00      .00      .00      .00      .00      .00      .00     e.00     e.00     e.00     e.00
  3       .00      .00      .00      .00      .00      .00      .00      .00     e.00     e.00     e.00     e.00
  4       .00      .00      .00      .00      .00      .00      .00      .00     e.00     e.00     e.00     e.00
  5       .00      .00      .00      .00      .00      .00      .00      .00     e.00     e.00     e.00     e.00

  6       .00      .00      .00      .00      .00      .00      .00      .00     e.00     e.00     e.00     e.00
  7       .00      .00      .00      .00      .00      .00      .00      .00     e.00     e.00     e.00     e.00
  8       .00      .00      .00      .00      .00      .00      .00      .00     e.00     e.00     e.00     e.00
  9       .00      .00      .17      .00      .00      .00      .00      .00     e.00     e.00     e.00     e.00
 10       .00      .00      .00      .00      .00      .00      .00      .00     e.00     e.00     e.00     e.00

 11       .00      .00      .00      .00      .00      .00      .00      .00     e.00     e.00     e.00     e.00
 12       .00      .00      .00      .18      .00      .00      .00      .00     e.00     e.00     e.00     e.00
 13       .00      .00      .00      .69      .00      .00      .00      .00     e.00     e.00     e.00     e.00
 14       .00      .00      .00      .00      .00      .00      .00      .00     e.00     e.00     e.00     e.00
 15       .00      .00      .00      .38      .00      .00      .00      .00     e.00     e.00     e.00     e.00

 16       .00      .00      .00      .01      .00      .00      .00      .00     e.00     e.00     e.00     e.00
 17       .00      .00      .00      .00      .00      .00      .00      .00     e.00     e.00     e.00     e.00
 18       .00      .00      .00      .00      .00      .00      .00      .00     e.00     e.00     e.00     e.00
 19       .00      .00      .00      .00      .00      .00      .00      .00     e.00     e.00     e.00     e.00
 20       .00      .00      .00      .00      .00      .00      .00      .00     e.00     e.00     e.00     e.00

 21       .00      .00      .00      .00      .00      .00      .00      .00     e.00     e.00     e.00     e.00
 22       .00      .20      .00      .00      .00      .00      .00      .00     e.00     e.50     e.00     e.00
 23       .00      .00      .00      .00      .00      .00      .00      .00     e.00     e.00     e.00     e.00
 24       .00      .00      .00      .00      .00      .00      .00      .00     e.00     e.00     e.00     e.00
 25       .00      .00      .00      .00      .00      .00      .00      .00     e.00     e.00     e.00    e8.0 

 26       .00      .00      .00      .00      .00      .00      .00      .00     e.00     e.00     e.00    e3.0 
 27       .00      .00      .00      .00      .00      .00      .00      .00     e.00     e.00     e.00     e.00
 28       .00      .00      .00      .00      .00      .00      .00      .00     e.00     e.00     e.00     e.00
 29       .00      .00      .00      .00      ---      .00      .00      .00     e.00     e.00     e.00     e.00
 30       .00      .00      .00      .00      ---      .00      .00      .00     e.00     e.00     e.00     e.00
 31       .00      ---      .00      .00      ---      .00      ---      .00      ---     e.00     e.00      ---

TOTAL    0.00     0.20     0.17     1.26     0.00     0.00     0.00     0.00     0.00     0.50     0.00    11.00
MEAN     .000     .007     .005     .041     .000     .000     .000     .000     .000     .016     .000      .37
MAX       .00      .20      .17      .69      .00      .00      .00      .00      .00      .50      .00      8.0
MIN       .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00
AC-FT     .00       .4       .3      2.5      .00      .00      .00      .00      .00      1.0      .00       22

    e  Estimated.


STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1989 - 1997, BY WATER YEAR (WY)                                 

          OCT      NOV      DEC      JAN      FEB      MAR      APR      MAY      JUN      JUL      AUG      SEP

MEAN     .004     .004     .036     41.1     7.75     9.41     .046     .031     .005     .005      .13      .22
MAX      .016     .021      .18      310     52.3     66.0      .21      .27     .041     .026      .78     1.30
(WY)     1993     1990     1993     1993     1993     1995     1993     1993     1994     1991     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 1996 CALENDAR YEAR        FOR 1997 WATER YEAR           WATER YEARS 1989 - 1997

ANNUAL TOTAL                           0.69                      13.13                                          
ANNUAL MEAN                             .002                       .036                      4.92               
HIGHEST ANNUAL MEAN                                                                         30.4            1993
LOWEST ANNUAL MEAN                                                                            .002          1996
HIGHEST DAILY MEAN                      .30  Feb  1               8.0   Sep 25            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                                             (a) Sep 25            9060       Jan  7 1993
INSTANTANEOUS PEAK STAGE                                            (a) Sep 25               5.93    Jan  7 1993
ANNUAL RUNOFF (AC-FT)                  1.4                       26                       3570                  
10 PERCENT EXCEEDS                      .00                        .00                        .00               
50 PERCENT EXCEEDS                      .00                        .00                        .00               
90 PERCENT EXCEEDS                      .00                        .00                        .00               

    (a)  Peak occurred on Sept. 25, but peak discharge and stage are unknown.