10259000 ANDREAS CREEK NEAR PALM SPRINGS, CA

LOCATION.-Lat 33°45'36", long 116°32'57", in SE 1/4 SE 1/4 sec.3, T.5 S., R.4 E., Riverside County, Hydrologic Unit 18100200, on left bank 
  at U.S. Bureau of Indian Affairs Diversion Dam, 1.1 mi upstream from mouth, and 5.1 mi south of Palm Springs. 
DRAINAGE AREA.-8.65 mi2. 
PERIOD OF RECORD.-October 1948 to current year. 
REVISED RECORDS.-WDR CA-88-1: Drainage area. WDR CA-91-1: 1986(M), 1988(M). 
GAGE.-Water-stage recorder and concrete control.  Elevation of gage is 800 ft above sea level, from topographic map.  Prior to Mar. 25, 1949, 
  reference point at same site at different datum. 
REMARKS.-Records good.  No regulation upstream from station.  One small diversion for domestic use about 1 mi upstream from station.  See 
  schematic diagram of Salton Sea Basin. 
EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 1,960 ft3/s, Aug. 31, 1954, gage height, 7.11 ft, from rating curve extended 
  above 80 ft3/s on basis of slope-area measurement of peak flow; no flow at times in some years. 
EXTREMES FOR CURRENT YEAR.-Peak discharges greater than base discharge of 50 ft3/s, or maximum, from rating curve extended above 
  98 ft3/s by theoretical computations of flow over weir: 
  			Discharge	Gage height			Discharge	Gage height
  	Date	Time	(ft3/s)	(ft)	Date	Time	(ft3/s)	(ft)

  	Jan. 26	1045	27	2.92

                  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       .86      1.4      1.7      2.4      4.0      2.8      2.4     1.7      1.0       .85      .72      .78
  2       .90      1.3      1.7      2.5      3.9      2.7      2.4     1.6       .99      .82      .69     1.0 
  3       .89      1.3      1.7      4.4      3.7      2.7      2.7     1.5      1.0       .75      .68     1.0 
  4       .87      1.3      1.7      3.8      3.6      2.6      2.6     1.5      1.0       .73      .75     1.3 
  5       .87      1.3      1.7      3.2      3.4      2.6      2.5     1.4      1.0       .75      .69     2.8 

  6       .86      1.3      1.8      2.9      3.2      2.5      2.4     1.4      1.2       .68      .69     1.3 
  7       .84      1.3      1.8      2.7      3.2      2.6      2.3     1.4      1.2       .69      .70      .99
  8       .82      1.2      1.8      2.5      3.2      2.5      2.2     1.4      1.3       .72      .70      .89
  9       .84      1.2      2.8      2.5      3.1      2.5      2.2     1.4      1.2       .72      .75      .89
 10       .85      1.2      6.1      2.4      3.0      2.4      2.2     1.4      1.1       .73      .83      .89

 11       .85      1.2      3.1      2.5      3.0      2.4      2.1     1.4      1.0       .76      .70      .77
 12       .87      1.2      2.7      3.1      3.0      2.4      2.1     1.3      1.0       .81      .74      .77
 13       .89      1.3      2.4      5.1      2.9      2.4      2.1     1.3      1.1       .78      .72      .81
 14       .93      1.3      2.2      3.6      2.8      2.4      2.1     1.3      1.2       .73      .65      .90
 15       .97      1.3      2.1      3.5      2.8      2.4      2.0     1.2      1.2       .70      .65     1.2 

 16       .99      1.4      2.1      3.6      2.8      2.5      2.0     1.2      1.1       .67      .77     1.2 
 17      1.0       1.4      2.1      3.1      2.7      2.5      1.9     1.3       .97      .66      .85      .97
 18       .95      1.6      2.1      3.0      2.7      2.4      1.8     1.3       .97      .66      .77      .87
 19       .97      1.5      2.1      3.0      2.7      2.4      1.9     1.5       .98      .66      .70      .86
 20      1.0       1.5      2.1      2.9      2.6      2.3      1.9     1.6       .91      .71      .67      .86

 21      1.1       1.8      2.1      2.9      2.6      2.3      1.8     1.4       .91      .81      .63      .85
 22      1.1       6.7      2.9      2.8      2.6      2.3      1.8     1.3       .88     1.7       .63      .83
 23      1.1       3.1      2.9      3.4      2.6      2.4      1.8     1.3      1.0      1.3       .65      .82
 24      1.1       2.2      2.4      3.5      2.6      2.3      1.8     1.3       .85     1.1       .68      .85
 25      1.1       1.9      2.3      4.0      2.6      2.3      1.8     1.3       .87      .82      .68     7.2 

 26      1.1       1.8      2.3     20        2.6      2.3      1.7     1.3       .90      .78      .66     5.3 
 27      1.2       1.7      2.2      9.9      2.9      2.3      1.7     1.2       .88      .80      .71     2.4 
 28      1.3       1.7      2.6      6.6      3.2      2.3      1.7     1.1       .86      .81      .74     1.7 
 29      1.3       1.7      2.6      5.3      ---      2.2      1.7     1.1       .86      .82      .75     1.4 
 30      1.7       1.7      2.4      4.8      ---      2.2      1.7     1.0       .86      .84      .74     1.3 
 31      1.7       ---      2.4      4.4      ---      2.2      ---      .99      ---      .79      .68      ---

TOTAL   31.82     50.8     72.9    130.3     84.0     75.1     61.3    41.39    30.29    25.15    21.97    43.70
MEAN     1.03     1.69     2.35     4.20     3.00     2.42     2.04     1.34     1.01      .81      .71     1.46
MAX       1.7      6.7      6.1       20      4.0      2.8      2.7      1.7      1.3      1.7      .85      7.2
MIN       .82      1.2      1.7      2.4      2.6      2.2      1.7      .99      .85      .66      .63      .77
AC-FT      63      101      145      258      167      149      122       82       60       50       44       87


STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1949 - 1997, BY WATER YEAR (WY)                                 

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

MEAN     1.36     2.20     3.14     4.86     5.68     6.06     4.43     3.03     1.95     1.40     1.39     1.28
MAX      5.60     19.2     30.2     46.5     56.4     33.7     20.0     17.4     12.4     7.51     9.52     6.05
(WY)     1984     1966     1967     1993     1980     1980     1983     1983     1983     1983     1983     1983
MIN       .38      .60      .96      .95     1.02      .99      .68      .51      .23     .087      .14      .24
(WY)     1966     1963     1963     1976     1961     1961     1961     1961     1961     1961     1963     1964

SUMMARY STATISTICS           FOR 1996 CALENDAR YEAR        FOR 1997 WATER YEAR           WATER YEARS 1949 - 1997

ANNUAL TOTAL                         648.97                     668.72                                          
ANNUAL MEAN                            1.77                       1.83                       3.05               
HIGHEST ANNUAL MEAN                                                                         12.4            1983
LOWEST ANNUAL MEAN                                                                            .66           1961
HIGHEST DAILY MEAN                     7.3   Feb  1              20     Jan 26             395       Dec  6 1966
LOWEST DAILY MEAN                       .66  Aug 21                .63  Aug 21                .00    Jun 27 1961
ANNUAL SEVEN-DAY MINIMUM                .70  Aug 17                .66  Aug 20                .00    Jul 13 1963
INSTANTANEOUS PEAK FLOW                                          27     Jan 26            1960       Aug 31 1954
INSTANTANEOUS PEAK STAGE                                          2.92  Jan 26               7.11    Aug 31 1954
ANNUAL RUNOFF (AC-FT)               1290                       1330                       2210                  
10 PERCENT EXCEEDS                     3.1                        3.0                        5.4                
50 PERCENT EXCEEDS                     1.4                        1.4                        1.7                
90 PERCENT EXCEEDS                      .81                        .74                        .59