10295500  LITTLE WALKER RIVER NEAR BRIDGEPORT, CA

LOCATION.-Lat 38°21'30", long 119°26'30", in NW 1/4 NW 1/4 sec.22, T.6 N., R.23 E., Mono County, Hydrologic Unit 16050302, in Toiyabe National Forest, on right bank, 0.8 mi North of Sonora Junction, 1.5 mi upstream from mouth, and 14 mi northwest of Bridgeport.
DRAINAGE AREA.-63.1 mi2.
PERIOD OF RECORD.-April to August 1910, October 1944 to September 1986, October 1995 to current year.  Prior to October 1958, published as East Fork Walker River near Bridgeport.
REVISED RECORDS.-WDR 82-1:  Drainage area.
GAGE.-Water-stage recorder.  Elevation of gage is 6,790 ft above sea level, from topographic map.  April to August 1910, nonrecording gage at site 1 mi upstream at different datum.  Prior to Jan. 2, 1997, at same site, at datum 1.0 ft higher.
REMARKS.-Records fair except for estimated daily discharges, which are poor.  Small diversions above station. These data are reviewed and provided by the Nevada District Office, U.S. Geological Survey.
EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 2,540 ft3/s, Jan. 2, 1997, gage height, 5.70 ft; minimum daily, 2.6 ft3/s, Aug. 16, 1977.
EXTREMES FOR CURRENT YEAR.-Peak discharges greater than base discharge of 200 ft3/s and maximum (*): 
  Date	Time	Discharge
  (ft3/s)	Gage height
  (ft)		Date	Time	Discharge
  (ft3/s)	Gage height
  (ft)
  	Mar. 23		1415		279		2.63			July 10		0100		*359		*2.87

                  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        22       24       23       22       27       19       42      128      119      279      122       46
   2        23       23       20       22       26       19       39      132      124      265      118       46
   3        23       23      e20       20       29       20       38      124      119      273      113       49
   4        22       23      e20      e20       27       23       35      121      115      273      109       51
   5        22       22      e21      e20       29       23       34      128      112      270      109       56
 
   6        23       23      e22      e20       24       21       34      128      137      270      108       55
   7        23       24      e22      e21       24       27       32      137      159      279      106       52
   8        23       21       22      e21       26       20       31      137      153      292       98       49
   9        26       22      e21       22       26       21       34      132      159      295       80       80
  10        25       24      e22       21       31       21       36      119      168      338       70       62
 
  11        25       25      e19       21       26       21       36      106      164      311       71       57
  12        24       23      e19       22       27       22       33       99      164      292       68       57
  13        27       23      e18       26       25       22       31       82      164      273       68       50
  14        29       22      e18       23       24       23       30       80      188      265       68       47
  15        29       22      e18       32       28       25       30       78      228      242       62       45
 
  16        28       25      e19       32       34       29       29       84      265      265       59       43
  17        27       23       20       34       26       31       31       75      253      295       49       42
  18        27       23       17       30       26       31       37       74      234      245       47       39
  19        26       25      e17       26       20       33       48       76      250      220       46       38
  20        26       22      e18      e26       21       38       64       84      250      228       46       38
 
  21        27       23      e18      e25       19       43       85       83      259      226       46       37
  22        26       23      e18      e25       20       81      106       84      265      218       46       36
  23        26       23      e18      e25       19      172      106       83      262      195       42       35
  24        25       21      e18      e25       31      150       90       93      265      195       44       36
  25        24       22      e18      e23       25      119       82      104      268      190       45       37
 
  26        25       27      e19       23       21       89       77      101      250      153       48       44
  27        24       24      e19       23       19       71       86       87      242      147       47       47
  28        24       27      e20       25       18       60       97       92      250      164       47       43
  29        25       27      e20       23      ---       50      112       96      259      135       46       48
  30        25       24      e21       33      ---       50      120       90      256      143       48       47
  31        24      ---       21       31      ---       46      ---       96      ---      128       49      ---
 
 TOTAL     775      703      606      762      698     1420     1685     3133     6101     7364     2125     1412
 MEAN     25.0     23.4     19.5     24.6     24.9     45.8     56.2      101      203      238     68.5     47.1
 MAX        29       27       23       34       34      172      120      137      268      338      122       80
 MIN        22       21       17       20       18       19       29       74      112      128       42       35
 AC-FT    1540     1390     1200     1510     1380     2820     3340     6210    12100    14610     4210     2800
 
 STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1945 - 1998, BY WATER YEAR (WY)                                 
 
 MEAN     20.4     21.8     22.2     23.0     22.9     27.7     51.6      126      177      106     40.2     23.8
 MAX      47.7     65.3     98.4      101     58.9     85.7     97.0      323      388      297      137     55.5
 (WY)     1983     1951     1951     1997     1986     1986     1986     1969     1983     1967     1983     1983
 MIN      6.79     9.84     9.10     9.26     11.0     10.8     20.9     16.5     36.6     9.48     5.41     4.95
 (WY)     1978     1949     1949     1949     1977     1977     1976     1977     1976     1977     1977     1977
 
 SUMMARY STATISTICS           FOR 1997 CALENDAR YEAR        FOR 1998 WATER YEAR           WATER YEARS 1945 - 1998
 
 ANNUAL TOTAL                       31332                      26784                                             
 ANNUAL MEAN                           85.8                       73.4                       55.4                
 HIGHEST ANNUAL MEAN                                                                        113              1983
 LOWEST ANNUAL MEAN                                                                          13.9            1977
   HIGHEST DAILY MEAN                   600     Jan  2             338     Jul 10             730       May 16 1996
   LOWEST DAILY MEAN                     17     Dec 18              17     Dec 18               2.6     Aug 16 1977
   ANNUAL SEVEN-DAY MINIMUM              18     Dec 18              18     Dec 18               3.0     Aug 11 1977
   INSTANTANEOUS PEAK FLOW                                         359     Jul 10            2540       Jan  2 1997
   INSTANTANEOUS PEAK STAGE                                          2.87  Jul 10               5.70    Jan  2 1997
 ANNUAL RUNOFF (AC-FT)              62150                      53130                      40150                  
 10 PERCENT EXCEEDS                   246                        222                        148                  
 50 PERCENT EXCEEDS                    52                         35                         26                  
 90 PERCENT EXCEEDS                    22                         21                         13                  
   e  Estimated.