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.

EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 833 ft3/s, Dec. 9, 1982, gage height, 14.73 ft; minimum daily,
   115 ft3/s, Nov. 27, 1994.


                  DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1995 TO SEPTEMBER 1996
                                               DAILY MEAN VALUES

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

  1       165      172      190      196      165      212      182      299      197      153      131      159
  2       167      173      206      189      166      212      182      299      193      155      130      159
  3       168      174      213      197      166      211      195      292      188      156      127      162
  4       172      182      218      205      162      210      189      290      188      165      121      163
  5       169      188      235      203      160      221      181      292      183      164      121      162

  6       169      184      242      194      168      225      180      293      183      156      122      177
  7       167      177      248      180      175      226      179      298      179      149      126      181
  8       168      168      244      162      176      231      179      291      171      149      132      178
  9       175      160      232      160      179      235      178      272      165      151      134      168
 10       174      159      225      160      175      235      179      268      163      150      135      167

 11       170      154      228      162      166      232      173      269      169      145      142      166
 12       171      154      236      162      187      237      165      255      164      141      141      163
 13       172      161      226      157      181      244      162      253      158      157      140      162
 14       166      162      228      154      194      253      163      269      157      151      136      157
 15       166      153      233      152      224      246      173      271      156      142      153      152

 16       165      143      228      153      236      237      173      259      149      151      147      153
 17       170      143      243      150      240      230      172      229      150      142      149      160
 18       166      144      261      147      229      228      172      200      159      131      141      163
 19       157      145      269      144      233      227      170      186      158      125      148      163
 20       167      147      267      145      229      226      166      189      157      125      144      171

 21       166      157      261      142      229      214      161      189      151      125      139      168
 22       164      170      245      143      215      195      162      190      154      123      137      162
 23       164      174      229      146      202      179      172      204      158      127      138      160
 24       165      164      224      150      194      175      192      197      173      130      136      160
 25       167      165      221      155      198      175      236      191      174      129      135      162

 26       165      174      231      150      203      176      255      219      163      126      144      159
 27       164      178      245      147      201      179      222      205      155      131      146      159
 28       168      172      251      146      204      181      217      218      152      129      149      165
 29       170      172      231      147      209      179      243      217      153      129      153      160
 30       175      174      214      152      ---      175      277      226      154      130      155      153
 31       174      ---      206      158      ---      173      ---      213      ---      133      152      ---

TOTAL    5206     4943     7230     5008     5666     6579     5650     7543     4974     4370     4304     4894
MEAN      168      165      233      162      195      212      188      243      166      141      139      163
MAX       175      188      269      205      240      253      277      299      197      165      155      181
MIN       157      143      190      142      160      173      161      186      149      123      121      152
AC-FT   10330     9800    14340     9930    11240    13050    11210    14960     9870     8670     8540     9710



                    10254970  NEW RIVER AT INTERNATIONAL BOUNDARY, AT CALEXICO, CA--Continued

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1980 - 1996, BY WATER YEAR (WY)

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

MEAN      230      219      262      264      267      281      290      270      224      236      269      248
MAX       370      333      374      366      375      395      452      389      321      394      441      399
(WY)     1984     1985     1987     1987     1987     1986     1986     1984     1984     1984     1984     1983
MIN       149      122      167      162      179      190      188      177      154      139      139      152
(WY)     1993     1995     1980     1996     1991     1995     1996     1990     1992     1994     1996     1992

SUMMARY STATISTICS           FOR 1995 CALENDAR YEAR        FOR 1996 WATER YEAR           WATER YEARS 1980 - 1996

ANNUAL TOTAL                       71780                      66367
ANNUAL MEAN                          197                        181                        255
HIGHEST ANNUAL MEAN                                                                        362              1986
LOWEST ANNUAL MEAN                                                                         181              1996
HIGHEST DAILY MEAN                   399     Jan 25             299     May  1             735       Dec  9 1982
LOWEST DAILY MEAN                    132     Aug 18             121     Aug  4             115       Nov 27 1994
ANNUAL SEVEN-DAY MINIMUM             134     Sep  2             125     Aug  1             120       Nov 24 1994
INSTANTANEOUS PEAK FLOW                                         311     May  3             833       Dec  9 1982
INSTANTANEOUS PEAK STAGE                                         10.03  May  3              14.73    Dec  9 1982
ANNUAL RUNOFF (AC-FT)             142400                     131600                     184700
10 PERCENT EXCEEDS                   252                        236                        371
50 PERCENT EXCEEDS                   188                        170                        237
90 PERCENT EXCEEDS                   152                        142                        160