10254670 ALAMO RIVER AT DROP NO. 3, NEAR CALIPATRIA, CA

LOCATION.-Lat 33°06'16", long 115°32'39", on line between secs.19 and 20, T.12 S., R.14 E., Imperial County, Hydrologic Unit 18100200, on right bank 2.2 mi southwest of Calipatria. 
PERIOD OF RECORD.-October 1979 to current year.  Records prior to October 1979 in files of the Imperial Irrigation District. 
  CHEMICAL DATA: Water years 1969-70, 1975-77, 1979-94. 
  BIOLOGICAL DATA: Water years 1979-81. 
  SPECIFIC CONDUCTANCE: Water years 1969-70, 1975-77, 1979-84. 
  WATER TEMPERATURE: Water years 1969-70, 1975-77, 1979-84. 
  SEDIMENT DATA: Water years 1979-94. 
REVISED RECORDS.-WDR CA-95-1: 1993(M). 
GAGE.-Water-stage recorder and broad-crested weir.  Elevation of gage is 185 ft below sea level, from topographic map. 
REMARKS.-Records excellent.  Flow is mainly return from irrigated areas.  See schematic diagram of Salton Sea Basin. 
EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 5,980 ft3/s, Mar. 27, 1992, gage height, 6.56 ft, from rating curve extended above 1,000 ft3/s; maximum gage height, 7.20 ft, Jan. 17, 1993 (affected by backwater); minimum daily, 259 ft3/s, Jan. 2, 1985. 

                  DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1997 TO SEPTEMBER 1998

                                               DAILY MEAN VALUES
 
DAY       OCT      NOV      DEC      JAN      FEB      MAR      APR      MAY      JUN      JUL      AUG      SEP
 
  1       575      751      584      457      673      715      888      938      848      731      829      607
  2       543      746      582      392      573      798      883      963      789      739      852      635
  3       541      702      593      484      585      836      936      941      759      792      758      644
  4       583      715      615      503      687      813      876      912      780      770      762      656
  5       633      766      644      437      495      828      889      911      761      800      782      662
 
  6       598      770      659      448      457      822      855      919      791      745      749      640
  7       599      774      642      525      479      812      875      918      759      756      805      621
  8       614      699      527      559      469      777      841      943      731      796      803      594
  9       695      711      468      557      517      813      861      927      730      821      772      605
 10       787      699      486      595      403      781      934      909      755      808      772      670
 
 11       739      689      533      550      396      795      956      890      741      819      712      645
 12       792      685      539      465      435      868      921      882      716      792      684      596
 13       825      670      585      474      449      910      799      874      758      743      646      624
 14       810      684      592      500      430      971      852      878      747      804      663      630
 15       811      671      579      471      544     1000      921      879      769      809      724      647
 
 16       866      681      583      494      459      879      933      871      741      829      707      671
 17       842      633      597      508      423      742      928      877      736      811      681      717
 18       800      667      640      536      385      658      921      848      755      819      641      739
 19       777      689      607      521      354      700      935      835      752      767      636      685
 20       729      677      574      551      339      776      931      868      763      732      670      680
 
 21       739      696      573      591      345      867      941      887      760      727      685      690
 22       780      645      656      594      361      897      961      904      732      773      724      722
 23       763      628      537      610      336      915      948      887      727      734      748      765
 24       744      611      453      642      361      934      950      839      766      732      672      791
 25       765      609      388      652      362      958      941      793      719      795      680      801
 
 26       833      642      328      626      483     1030      931      780      740      811      690      840
 27       821      643      347      655      602      963      934      797      715      779      699      867
 28       782      569      374      693      645      952      947      837      713      809      712      858
 29       770      535      408      734      ---      936      959      831      684      782      734      840
 30       805      560      432      739      ---      877      926      817      688      788      677      818
 31       801      ---      473      678      ---      893      ---      826      ---      789      617      ---
 
TOTAL   22762    20217    16598    17241    13047    26516    27373    27181    22425    24202    22286    20960
MEAN      734      674      535      556      466      855      912      877      748      781      719      699
MAX       866      774      659      739      687     1030      961      963      848      829      852      867
MIN       541      535      328      392      336      658      799      780      684      727      617      594
AC-FT   45150    40100    32920    34200    25880    52590    54290    53910    44480    48000    44200    41570


STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1980 - 1998, BY WATER YEAR (WY)                                 
 
          OCT      NOV      DEC      JAN      FEB      MAR      APR      MAY      JUN      JUL      AUG      SEP
MEAN      781      667      548      524      599      825      961      842      701      700      710      728
MAX       895      809      666      640      718      947     1208     1000      888      888      846      847
(WY)     1992     1991     1991     1993     1991     1995     1994     1994     1994     1994     1994     1994
MIN       655      569      379      392      445      697      812      706      515      556      593      632
(WY)     1982     1982     1986     1995     1980     1987     1986     1982     1982     1982     1982     1986
 
SUMMARY STATISTICS           FOR 1997 CALENDAR YEAR        FOR 1998 WATER YEAR           WATER YEARS 1980 - 1998
 
ANNUAL TOTAL                      270036                     260808                                             
ANNUAL MEAN                          740                        715                        716                  
HIGHEST ANNUAL MEAN                                                                        833              1994
LOWEST ANNUAL MEAN                                                                         628              1982
  HIGHEST DAILY MEAN                  1290     Sep 26            1030     Mar 26            4670       Mar 27 1992
  LOWEST DAILY MEAN                    328     Dec 26             328     Dec 26             259       Jan  2 1985
  ANNUAL SEVEN-DAY MINIMUM             390     Dec 24             351     Feb 19             277       Dec 31 1984
  INSTANTANEOUS PEAK FLOW                                        1150     Mar 26            5980       Mar 27 1992
  INSTANTANEOUS PEAK STAGE                                          2.83  Mar 26           (a) 7.20    Jan 17 1993
ANNUAL RUNOFF (AC-FT)             535600                     517300                     518500                  
10 PERCENT EXCEEDS                   940                        913                        931                  
50 PERCENT EXCEEDS                   744                        734                        705                  
90 PERCENT EXCEEDS                   562                        485                        507                  
 
  	(a) Affected by backwater.