10254970 NEW RIVER AT INTERNATIONAL BOUNDARY, AT CALEXICO, CA

LOCATION.-Lat 32°39'57", long 115°30'08", in SW 1/4 SE 1/4 sec.14, T.17 S., R.14 E., Imperial County, Hydrologic Unit 18100200, on left 
  bank 200 ft downstream from bridge on Second Street and 0.2 mi downstream from International Boundary in Calexico. 
PERIOD OF RECORD.-October 1979 to current year.  October 1945 to September 1979, in files of Imperial Irrigation District. 
  CHEMICAL DATA: Water years 1969-71, 1973-85. 
  BIOLOGICAL DATA: Water years 1973-81. 
  SPECIFIC CONDUCTANCE: Water years 1974-81. 
  WATER TEMPERATURE: Water years 1974-81. 
  SEDIMENT DATA: Water years 1975-85. 
GAGE.-Water-stage recorder.  Elevation of gage is 35 ft below sea level, from topographic map. 
REMARKS.-Records good.  Discharge represents seepage and return flow from irrigated areas.  See schematic diagram of Salton Sea Basin. 
COOPERATION.-Gage height record provided by Imperial Irrigation District for the following dates:  Nov. 19 to Dec. 4, Apr. 24-29.
EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 833 ft3/s, Dec. 9, 1982, Sept. 25, 1997, gage height, 14.73 ft; minimum daily,  
  98 ft3/s, Nov. 23, 28-29, 1996.

                  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       148      120      100      108      248      250      216      216      179      157      174      200
  2       146      115      104      111      231      256      215      215      179      166      175      220
  3       143      114      105      114      222      272      204      215      182      154      174      222
  4       143      116      110      115      208      278      209      216      193      147      175      215
  5       140      118      112      123      208      292      218      212      195      147      186      212

  6       135      116      115      121      201      290      234      229      195      145      191      213
  7       128      113      112      121      191      289      255      239      208      156      185      208
  8       127      109      110      121      176      288      271      229      218      152      179      192
  9       132      109      107      125      164      285      269      224      217      148      177      199
 10       135      105      107      131      171      277      265      226      225      150      189      208

 11       133      111      106      128      170      279      261      212      221      146      195      203
 12       129      113      108      131      171      290      261      194      208      144      199      198
 13       131      109      113      151      177      280      260      192      187      141      205      192
 14       134      111      110      159      182      256      253      197      189      146      212      206
 15       138      112      106      181      176      242      244      206      191      143      218      233

 16       128      114      108      197      173      229      234      216      187      147      220      279
 17       115      117      116      213      179      219      233      214      189      150      217      313
 18       113      114      112      214      201      217      256      207      202      148      209      311
 19       111      111      108      213      215      219      249      199      199      143      203      286
 20       109      105      110      213      207      222      239      197      195      140      207      251

 21       112      104      112      208      201      234      247      197      189      161      206      224
 22       118       99      119      222      194      234      249      188      171      212      195      216
 23       120       98      115      234      195      219      245      194      155      209      193      211
 24       116      100      115      228      195      215      219      197      152      191      192      221
 25       111      102      117      213      201      245      203      197      155      207      201      560

 26       109      101      117      211      232      247      185      193      160      212      207      426
 27       111       99      127      224      248      234      190      197      160      216      211      356
 28       116       98      123      252      244      216      213      196      153      238      212      332
 29       122       98      117      278      ---      209      216      204      151      234      210      292
 30       119      100      111      276      ---      199      222      203      155      209      196      271
 31       123      ---      109      263      ---      200      ---      195      ---      188      193      ---

TOTAL    3895     3251     3461     5599     5581     7682     7035     6416     5560     5247     6106     7670
MEAN      126      108      112      181      199      248      235      207      185      169      197      256
MAX       148      120      127      278      248      292      271      239      225      238      220      560
MIN       109       98      100      108      164      199      185      188      151      140      174      192
AC-FT    7730     6450     6860    11110    11070    15240    13950    12730    11030    10410    12110    15210


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      224      213      253      259      264      279      287      267      222      232      265      248
MAX       370      334      374      366      375      395      452      389      321      394      441      399
(WY)     1984     1985     1987     1987     1987     1986     1986     1984     1984     1984     1984     1983
MIN       126      108      112      162      179      190      188      177      154      139      139      152
(WY)     1997     1997     1997     1996     1991     1995     1996     1990     1992     1994     1996     1992

SUMMARY STATISTICS           FOR 1996 CALENDAR YEAR        FOR 1997 WATER YEAR           WATER YEARS 1980 - 1997

ANNUAL TOTAL                       59595                      67503                                             
ANNUAL MEAN                          163                        185                        251                  
HIGHEST ANNUAL MEAN                                                                        362              1986
LOWEST ANNUAL MEAN                                                                         181              1996
HIGHEST DAILY MEAN                   299     May  1             560     Sep 25             735       Dec  9 1982
LOWEST DAILY MEAN                     98     Nov 23              98     Nov 23              98       Nov 23 1996
ANNUAL SEVEN-DAY MINIMUM              99     Nov 23              99     Nov 23              99       Nov 23 1996
INSTANTANEOUS PEAK FLOW                                         833     Sep 25             833       Dec  9 1982
INSTANTANEOUS PEAK STAGE                                         14.73  Sep 25              14.73    Dec  9 1982
ANNUAL RUNOFF (AC-FT)             118200                     133900                     181900                  
10 PERCENT EXCEEDS                   229                        251                        368                  
50 PERCENT EXCEEDS                   157                        194                        233                  
90 PERCENT EXCEEDS                   111                        111                        157