10296000  WEST WALKER RIVER BELOW LITTLE WALKER RIVER, NEAR COLEVILLE, CA

LOCATION.--Lat 38°22'47", long 119°26'57", in NE 1/4 SE 1/4 sec.9, T.6 N., R.23 E., Mono County, Hydrologic Unit
   16050302, in Toiyabe National Forest, on left bank, 50 ft downstream from Little Walker River, 160 ft upstream
   from bridge on U.S. Highway 395, and 13 mi southeast of Coleville.

DRAINAGE AREA.--181 mi2.

PERIOD OF RECORD.--April 1938 to current year.  Prior to October 1958, published as "below East Fork."

REVISED RECORDS.--WDR NV-79-1:  Drainage area.

GAGE.--Water-stage recorder.  Datum of gage is 6,591.39 ft above sea level.  Prior to October 1, 1939, at site,
   125 ft downstream at datum 1.00 ft higher.  October 1, 1939, to September 30, 1969, at present site and datum.
   October 1, 1969, to July 10, 1987, at site 100 ft downstream at same datum.

REMARKS.--Records fair except for estimated daily discharges, which are poor.  Station is above diversions except
   for a few small ranch ditches.  Flow slightly regulated by Poore Lake, capacity, 1,200 acre-ft, 7 mi upstream.
   These data are reviewed and provided by the Nevada District Office, U.S. Geological Survey.

EXTREMES OUTSIDE PERIOD OF RECORD.--Maximum discharge observed prior to 1938, 5,800 ft3/s, December 11, 1937, on
   basis of slope-area measurement of peak flow.


                 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       110       71       56       80       81      121      236     1100     1010      815      265       99
  2       106       71       53       77       82      111      251     1140     1230      889      248       97
  3       103       70       48       76       78      120      231     1050     1540      970      218       95
  4       101       67       73       73      125      123      221      930     1670      837      203       91
  5        99       68       72       71      338       91      226      898     1650      727      192       91

  6        96       66       64       71      300      128      246      937     1740      667      189       89
  7        94       66       62       69      231      146      287      946     1940      710      181       87
  8        95       66       58       72      207      137      365      985     1870      758      189       86
  9        92       65       56       71      197      144      446      905     1710      757      190       85
 10        91       64       54       71      181      153      443      956     1550      721      188       84

 11        89       64       76       69      169      156      414     1090     1430      733      175       82
 12        88       63      261       69      163      148      397     1340     1350      803      168       79
 13        88       63      127       69      157      143      361     1510     1520      709      173       79
 14        86       62      117       68      153      136      367     1530     1540      741      171       81
 15        85       61      105       70      151      135      428     1870     1320      659      169       78

 16        84       60       99       95      165      142      479     3450     1270      586      161       78
 17        82       59       83       79      179      156      406     1710     1200      483      154       75
 18        81       59       89       79      163      184      377     1790     1120      420      144       73
 19        80       59       81       73      198      212      329     1220     1130      389      137       71
 20        80       57       79      e72      183      254      297     1010     1140      364      131       69

 21        78       57       68      e70      176      293      277      945     1120      356      126       67
 22        77       55       79      e70      166      310      277      900      949      359      123       63
 23        77       57       77      e70      164      273      312      827      933      379      121       61
 24        77       57       69       71      161      238      437      717      949      401      123       59
 25        76       56       67       67      152      223      610      627      806      363      122       57

 26        75       59       67      e70      139      209      779      624      670      334      118       55
 27        73       49       71       71      139      211      883      772      536      324      113       54
 28        71       59       70       73      124      216      848      682      501      336      107       53
 29        71       57       71       86      130      198      831      715      560      323      104       53
 30        73       57       94       89      ---      204     1010      820      692      303      102       51
 31        72      ---       93       85      ---      210      ---      859      ---      281      102      ---

TOTAL    2650     1844     2539     2296     4852     5525    13071    34855    36646    17497     4907     2242
MEAN     85.5     61.5     81.9     74.1      167      178      436     1124     1222      564      158     74.7
MAX       110       71      261       95      338      310     1010     3450     1940      970      265       99
MIN        71       49       48       67       78       91      221      624      501      281      102       51
AC-FT    5260     3660     5040     4550     9620    10960    25930    69130    72690    34710     9730     4450

  e Estimated


              10296000  WEST WALKER RIVER BELOW LITTLE WALKER RIVER, NEAR COLEVILLE, CA--Continued

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1938 - 1996, BY WATER YEAR (WY)

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

MEAN     55.4     68.6     72.1     67.1     75.1      106      295      758      940      489      152     74.0
MAX       219      539      448      204      246      369      600     1655     2066     1864      663      246
(WY)     1983     1951     1951     1956     1963     1986     1938     1969     1983     1995     1983     1983
MIN      16.6     22.2     20.0     18.1     26.0     32.1      108      139      188     41.1     18.5     12.3
(WY)     1978     1978     1991     1977     1991     1977     1975     1977     1976     1977     1977     1977

SUMMARY STATISTICS           FOR 1995 CALENDAR YEAR        FOR 1996 WATER YEAR           WATER YEARS 1938 - 1996

ANNUAL TOTAL                      195359                     128924
ANNUAL MEAN                          535                        352                        260
HIGHEST ANNUAL MEAN                                                                        537              1983
LOWEST ANNUAL MEAN                                                                          65.3            1977
HIGHEST DAILY MEAN                  3260     Jul  9            3450     May 16            3800       Nov 21 1950
LOWEST DAILY MEAN                     40     Jan  8              48     Dec  3               9.7     Sep 11 1977
ANNUAL SEVEN-DAY MINIMUM              49     Jan  2              54     Nov 27              10       Sep  5 1977
INSTANTANEOUS PEAK FLOW                                        4610     May 16            6220       Nov 20 1950
INSTANTANEOUS PEAK STAGE                                          6.55  May 16               8.10    Nov 20 1950
ANNUAL RUNOFF (AC-FT)             387500                     255700                     188400
10 PERCENT EXCEEDS                  1650                        974                        800
50 PERCENT EXCEEDS                   190                        142                         88
90 PERCENT EXCEEDS                    64                         64                         34