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 except those for September 25-26, which are poor (affected by backwater).  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 1996 TO SEPTEMBER 1997

                                               DAILY MEAN VALUES
DAY       OCT      NOV      DEC      JAN      FEB      MAR      APR      MAY      JUN      JUL      AUG      SEP

  1       821      768      579      506      648      801      812      997      741      724      800      689
  2       844      749      579      456      612      845      901     1030      708      754      837      710
  3       835      687      569      510      585      801      945      994      695      757      812      744
  4       830      675      563      527      644      766     1040     1000      695      760      796      717
  5       858      620      598      513      688      731     1120      997      703      768      767      660

  6       786      651      618      528      677      830     1000      973      783      795      787      740
  7       750      646      615      547      724      943      862      922      860      735      817      804
  8       756      655      592      539      721      868      872      935      794      747      774      733
  9       786      663      599      565      628      855      859      887      743      757      775      712
 10       775      661      596      610      589      846      928      858      651      752      731      744

 11       803      629      577      605      603      834     1040      830      676      771      635      773
 12       800      640      567      621      615      882      950      776      711      742      712      755
 13       794      661      591      634      629      873      989      753      723      745      784      772
 14       738      733      589      587      651      844      993      794      715      747      773      825
 15       772      685      601      511      632      903      982      813      697      744      749      957

 16       779      652      589      481      616      917      993      818      716      814      776      846
 17       759      638      609      492      609      893     1100      828      697      800      756      754
 18       739      663      604      492      649      860     1040      827      655      830      660      727
 19       736      681      610      473      706      894     1040      827      699      829      710      758
 20       695      671      624      417      760      916     1010      793      723      859      751      737

 21       680      647      630      418      783      984     1040      789      734      839      754      729
 22       646      646      654      438      822     1050     1020      798      766      824      731      766
 23       694      621      628      474      787      990      982      844      712      822      730      777
 24       763      619      637      543      758      865      944      738      696      884      727      799
 25       732      578      543      591      754      883      939      711      718      815      670     1090

 26       701      583      420      598      821      874      961      675      721      770      717     1290
 27       727      608      447      591      759      872      941      724      753      741      706      782
 28       694      606      526      587      722      928      929      702      736      746      722      680
 29       665      582      569      596      ---      967      948      744      706      744      734      564
 30       679      551      573      590      ---      966      933      748      705      819      762      565
 31       738      ---      547      600      ---      819      ---      771      ---      834      764      ---

TOTAL   23375    19469    18043    16640    19192    27300    29113    25896    21632    24268    23219    23199
MEAN      754      649      582      537      685      881      970      835      721      783      749      773
MAX       858      768      654      634      822     1050     1120     1030      860      884      837     1290
MIN       646      551      420      417      585      731      812      675      651      724      635      564
AC-FT   46360    38620    35790    33010    38070    54150    57750    51360    42910    48140    46050    46020


STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1980 - 1997, BY WATER YEAR (WY)                                 

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

MEAN      783      667      548      522      606      823      963      841      699      696      709      730
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 1996 CALENDAR YEAR        FOR 1997 WATER YEAR           WATER YEARS 1980 - 1997

ANNUAL TOTAL                      263281                     271346                                             
ANNUAL MEAN                          719                        743                        716                  
HIGHEST ANNUAL MEAN                                                                        833              1994
LOWEST ANNUAL MEAN                                                                         628              1982
HIGHEST DAILY MEAN                  1050     Apr 28            1290     Sep 26            4670       Mar 27 1992
LOWEST DAILY MEAN                    391     Jan  2             417     Jan 20             259       Jan  2 1985
ANNUAL SEVEN-DAY MINIMUM             518     Dec 25             458     Jan 17             277       Dec 31 1984
INSTANTANEOUS PEAK FLOW                                        1480     Sep 25            5980       Mar 27 1992
INSTANTANEOUS PEAK STAGE                                     (a)  3.82  Sep 25          (a)  7.20    Jan 17 1993
ANNUAL RUNOFF (AC-FT)             522200                     538200                     518600                  
10 PERCENT EXCEEDS                   896                        940                        932                  
50 PERCENT EXCEEDS                   701                        741                        703                  
90 PERCENT EXCEEDS                   599                        581                        507                  

    (a)  Affected by backwater.