10270872 MIDDLE FORK BISHOP CREEK BELOW LAKE SABRINA, NEAR BISHOP, CA

LOCATION.-Lat 37°12'50", long 118°36'34", unsurveyed, T.8 S., R.31 E., Inyo County, Hydrologic Unit 18090102, Inyo National Forest, on 
  right bank 800 ft downstream from Lake Sabrina Dam and 15.6 mi southwest of Bishop. 
DRAINAGE AREA.-16.7 mi2. 
PERIOD OF RECORD.-October 1990 to current year. Unpublished records prior to October 1990 available in files of Southern California 
  Edison Co. 
GAGE.-Water-stage recorder and sharp-crested weir. Elevation of gage is 9,050 ft above sea level, from topographic map. 
REMARKS.-Flow regulated by Lake Sabrina (station 10270870). Water is used for power development downstream. See schematic diagram of 
  Bishop Creek Basin. 
COOPERATION.-Records collected by Southern California Edison Co., under general supervision of the U.S. Geological Survey, in connection 
  with a Federal Energy Regulatory Commission project. 
EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 270 ft3/s, July 10, 1995, gage height, 2.15 ft; minimum daily, 6.5 ft3/s,     
  Mar. 19-27, 1991. 

                  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        15       18       18       19       47       42       30       21       32       96       65       28
  2        17       18       21       15       50       41       25       21       41       76       61       29
  3        21       20       22       15       52       40       19       21       45       57       57       35
  4        19       20       22       15       51       29       17       21       46       58       53       35
  5        19       20       21       18       51       31       16       21       53       62       51       35

  6        17       22       22       29       51       30       14       21       70       72       54       37
  7        15       23       22       33       51       31       14       22       74       83       58       39
  8        14       24       21       33       50       31       14       22       77       88       62       38
  9        14       24       21       34       50       31       14       22       78       88       64       15
 10        14       24       21       34       50       31       14       22       78       89       64       21

 11        14       24       22       37       49       31       14       22       79       89       62       24
 12        14       24       22       39       45       30       14       23       79       89       53       28
 13        14       24       21       39       45       30       14       23       79       89       48       40
 14        14       23       21       45       45       30       14       23       79       89       46       32
 15        14       26       21       29       45       31       14       18       80       88       44       21

 16        13       25       21       27       45       33       14       18       80       88       43       20
 17        13       18       22       27       44       33       14       18       82       88       43       27
 18        14       18       22       27       42       33       14       18       94       81       43       32
 19        13       18       22       27       42       33       15       18      124       78       43       41
 20        13       18       21       27       42       32       16       19      136       77       42       45

 21        13       18       21       27       41       32       16       19      140       74       38       44
 22        13       17       24       29       42       32       16       22      140       75       37       44
 23        14       19       21       28       44       32       18       27      131       79       37       44
 24        17       19       17       29       44       32       20       27      122       90       37       39
 25        17       19       17       24       44       32       20       36      115       94       33       35

 26        18       21       16       28       44       32       20       51      119       88       32       37
 27        22       20       16       27       43       31       20       50      124       83       32       37
 28        71       16       18       32       43       31       20       43      121       83       32       34
 29        62       18       18       37      ---       31       20       31      113       83       32       30
 30        27       18       18       46      ---       31       21       26      103       81       32       30
 31        18      ---       19       46      ---       31      ---       30      ---       77       31      ---

TOTAL     593      616      631      922     1292     1000      511      776     2734     2532     1429      996
MEAN     19.1     20.5     20.4     29.7     46.1     32.3     17.0     25.0     91.1     81.7     46.1     33.2
MAX        71       26       24       46       52       42       30       51      140       96       65       45
MIN        13       16       16       15       41       29       14       18       32       57       31       15
AC-FT    1180     1220     1250     1830     2560     1980     1010     1540     5420     5020     2830     1980


STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1991 - 1997, BY WATER YEAR (WY)                                 

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

MEAN     17.6     15.7     16.6     23.6     31.7     26.0     24.3     25.5     42.2     74.4     54.5     33.6
MAX      20.5     20.5     24.8     35.2     46.1     41.6     41.1     43.4     91.1      147      107     49.4
(WY)     1994     1997     1994     1994     1997     1995     1996     1996     1997     1995     1995     1995
MIN      11.8     8.56     10.2     7.63     7.11     6.91     10.4     9.28     9.14     30.6     33.8     22.7
(WY)     1991     1993     1993     1991     1991     1991     1993     1994     1994     1994     1992     1994

SUMMARY STATISTICS           FOR 1996 CALENDAR YEAR        FOR 1997 WATER YEAR           WATER YEARS 1991 - 1997

ANNUAL TOTAL                       15412                      14032                                             
ANNUAL MEAN                           42.1                       38.4                       32.2                
HIGHEST ANNUAL MEAN                                                                         47.8            1995
LOWEST ANNUAL MEAN                                                                          18.4            1991
HIGHEST DAILY MEAN                   154     Jul 12             140     Jun 21             230       Jul 11 1995
LOWEST DAILY MEAN                     13     Oct 16              13     Oct 16               6.5     Mar 19 1991
ANNUAL SEVEN-DAY MINIMUM              13     Oct 16              13     Oct 16               6.5     Mar 19 1991
INSTANTANEOUS PEAK FLOW                                         148     Jun 20             270       Jul 10 1995
INSTANTANEOUS PEAK STAGE                                          1.44  Jun 20               2.15    Jul 10 1995
ANNUAL RUNOFF (AC-FT)              30570                      27830                      23320                  
10 PERCENT EXCEEDS                    68                         79                         64                  
50 PERCENT EXCEEDS                    37                         31                         23                  
90 PERCENT EXCEEDS                    16                         16                          9.4