10257600 MISSION CREEK NEAR DESERT HOT SPRINGS, CA

LOCATION.-Lat 34°00'40", long 116°37'38", in NE 1/4 SW 1/4 sec.12, T.2 S., R.3 E., Riverside County, Hydrologic Unit 18100200, in Mission 
  Creek Indian Reservation, 0.6 mi downstream from West Fork, and 6.8 mi northwest of Desert Hot Springs. 
DRAINAGE AREA.-35.7 mi2. 
PERIOD OF RECORD.-October 1967 to current year. 
GAGE.-Water-stage recorder, crest-stage gage, and concrete scour limiter since November 1988.  Elevation of gage is 2,400 ft above sea level, 
  from topographic map. 
REMARKS.-Records good.  Slight regulation of low flow by two small dams with a combined capacity of about 3 acre-ft, 2 mi upstream from 
  station.  See schematic diagram of Salton Sea Basin. 
EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 1,750 ft3/s, Aug. 17, 1983, gage height, 3.33 ft on basis of slope-conveyance 
  study of peak flow; maximum gage height, 6.40 ft, Jan. 25, 1969; maximum gage height since November 1988, 5.80 ft from crest-stage gage, 
  Jan. 16, 1993, discharge not determined; no flow for many days in most years. 
EXTREMES FOR CURRENT YEAR.-Peak discharges greater than base discharge of 50 ft3/s, or maximum, from rating curve extended above 
  36 ft3/s on basis of critical depth computations: 
  			Discharge	Gage height			Discharge	Gage height
  	Date	Time	(ft3/s)	(ft)	Date	Time	(ft3/s)	(ft)

  	Dec. 10	0130	2.8	1.68

                  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       .17      .15      .27      .51     1.1      1.1       .68      .41      .13      .02      .00      .00
  2       .18      .15      .28      .48     1.1      1.0       .78      .40      .13      .01      .00      .00
  3       .15      .20      .28      .48     1.1      1.0       .90      .39      .12      .01      .00      .00
  4       .13      .23      .29      .56     1.1       .98      .84      .37      .13      .00      .00      .00
  5       .12      .23      .30      .56     1.1       .99      .77      .35      .15      .00      .00      .00

  6       .12      .23      .29      .57     1.1       .97      .75      .33      .17      .00      .00      .00
  7       .11      .22      .29      .54     1.1       .93      .69      .32      .17      .00      .00      .00
  8       .09      .21      .29      .58     1.1       .92      .64      .33      .17      .00      .00      .00
  9       .08      .21      .62      .66     1.1       .88      .69      .33      .15      .00      .00      .00
 10       .08      .21     1.6       .66     1.1       .87      .73      .31      .13      .00      .00      .00

 11       .08      .21      .88      .69     1.1       .85      .73      .28      .11      .00      .00      .00
 12       .08      .20      .70      .85     1.1       .83      .66      .28      .12      .00      .00      .00
 13       .08      .20      .60     1.0      1.1       .84      .64      .24      .15      .00      .00      .00
 14       .08      .20      .56      .88     1.1       .85      .62      .23      .18      .00      .00      .00
 15       .06      .21      .60     1.1      1.1       .84      .56      .22      .16      .00      .00      .00

 16       .05      .21      .63     1.1      1.0       .86      .52      .21      .13      .00      .00      .00
 17       .05      .21      .55      .99     1.1       .82      .50      .21      .08      .00      .00      .00
 18       .04      .21      .56      .94     1.1       .79      .49      .21      .05      .00      .00      .00
 19       .05      .21      .58      .91     1.0       .71      .57      .23      .04      .00      .00      .00
 20       .05      .22      .55      .91      .95      .62      .52      .31      .03      .00      .00      .00

 21       .05      .27      .54      .93     1.0       .62      .48      .28      .03      .00      .00      .00
 22       .05      .32      .96      .93     1.0       .61      .46      .26      .03      .00      .00      .00
 23       .05      .27      .58      .92     1.0       .66      .46      .26      .04      .00      .00      .00
 24       .05      .27      .57      .91     1.0       .63      .52      .27      .03      .00      .00      .00
 25       .06      .27      .55      .93     1.0       .61      .52      .27      .02      .00      .00      .00

 26       .06      .26      .55     1.5      1.0       .63      .48      .23      .01      .00      .00      .59
 27       .08      .27      .55     1.2      1.1       .62      .43      .21      .02      .00      .00      .45
 28       .09      .27      .55     1.2      1.1       .62      .45      .16      .01      .00      .00      .32
 29       .11      .27      .54     1.2       ---      .58      .44      .13      .02      .00      .00      .28
 30       .11      .27      .52     1.2       ---      .60      .42      .13      .01      .00      .00      .25
 31       .13      ---      .50     1.2       ---      .61      ---      .12      ---      .00      .00      ---

TOTAL    2.69     6.86    17.13    27.09    29.85    24.44    17.94     8.28     2.72     0.04     0.00     1.89
MEAN     .087      .23      .55      .87     1.07      .79      .60      .27     .091     .001     .000     .063
MAX       .18      .32      1.6      1.5      1.1      1.1      .90      .41      .18      .02      .00      .59
MIN       .04      .15      .27      .48      .95      .58      .42      .12      .01      .00      .00      .00
AC-FT     5.3       14       34       54       59       48       36       16      5.4      .08      .00      3.7


STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1968 - 1997, BY WATER YEAR (WY)                                 

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

MEAN      .89     1.14     1.21     3.70     9.13     7.14     5.78     4.69     3.01     2.02     1.55      .97
MAX      3.83     4.54     4.51     29.2      174     49.6     31.6     25.8     16.4     10.1     5.42     4.74
(WY)     1970     1984     1979     1980     1980     1980     1993     1993     1993     1980     1983     1993
MIN      .000     .000     .000     .000     .000     .000     .000     .000     .000     .000     .000     .000
(WY)     1968     1969     1969     1968     1968     1989     1968     1968     1968     1972     1968     1968

SUMMARY STATISTICS           FOR 1996 CALENDAR YEAR        FOR 1997 WATER YEAR           WATER YEARS 1968 - 1997

ANNUAL TOTAL                         313.56                     138.93                                          
ANNUAL MEAN                             .86                        .38                       3.40               
HIGHEST ANNUAL MEAN                                                                         28.3            1980
LOWEST ANNUAL MEAN                                                                            .000          1990
HIGHEST DAILY MEAN                     3.7   Feb  1               1.6   Dec 10             540       Feb 18 1980
LOWEST DAILY MEAN                       .00  Aug 13                .00  Jul  4                .00    Oct  1 1967
ANNUAL SEVEN-DAY MINIMUM                .00  Aug 22                .00  Jul  4                .00    Oct  1 1967
INSTANTANEOUS PEAK FLOW                                           2.8   Dec 10            1750       Aug 17 1983
INSTANTANEOUS PEAK STAGE                                          1.68  Dec 10               6.40    Jan 25 1969
ANNUAL RUNOFF (AC-FT)                622                        276                       2470                  
10 PERCENT EXCEEDS                     2.3                        1.0                        6.9                
50 PERCENT EXCEEDS                      .31                        .26                        .64               
90 PERCENT EXCEEDS                      .08                        .00                        .00