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 Unpublished records prior to October 1990 available in files of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 1995 TO SEPTEMBER 1996
DAILY MEAN VALUES
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
1 29 17 16 15 40 35 28 20 54 51 94 65
2 26 17 15 15 40 35 61 29 54 51 90 64
3 25 17 15 15 40 35 70 33 53 51 86 64
4 25 17 15 15 38 34 71 33 52 52 83 62
5 25 17 15 15 33 34 70 34 56 54 79 65
6 20 17 15 15 38 38 69 35 59 55 63 66
7 18 17 15 15 37 35 68 37 61 56 53 63
8 18 17 15 15 37 37 67 39 62 64 49 63
9 18 16 15 15 37 37 66 40 63 105 44 63
10 18 16 15 15 37 37 65 40 65 141 44 62
11 18 16 16 23 37 37 64 42 66 147 44 62
12 18 16 16 34 36 37 63 43 67 154 47 61
13 18 16 16 37 36 37 64 42 68 146 55 58
14 18 16 16 37 37 37 64 29 67 129 61 58
15 18 16 16 37 38 37 47 32 67 119 63 57
16 18 16 15 37 36 37 36 39 68 119 65 56
17 18 16 15 37 37 36 35 39 68 115 65 54
18 18 16 15 37 36 36 34 43 59 103 60 44
19 18 16 15 36 33 36 e21 50 51 95 55 22
20 17 16 15 36 32 36 15 54 51 87 50 21
21 17 16 15 36 35 37 15 54 52 77 46 20
22 17 16 15 37 32 36 16 54 53 72 50 20
23 17 16 15 37 32 36 16 54 53 72 64 20
24 17 16 15 37 35 38 15 54 50 78 68 20
25 17 16 15 37 36 38 15 54 50 81 68 20
26 17 15 15 40 36 38 15 54 51 88 67 20
27 17 16 15 37 36 38 16 54 51 91 67 20
28 17 16 15 38 36 37 16 54 51 111 67 20
29 17 16 15 40 36 37 16 54 51 123 67 20
30 17 16 15 40 --- 35 16 53 51 114 66 17
31 17 --- 15 40 --- 30 --- 53 --- 103 66 ---
TOTAL 588 487 471 920 1049 1123 1234 1345 1724 2904 1946 1327
MEAN 19.0 16.2 15.2 29.7 36.2 36.2 41.1 43.4 57.5 93.7 62.8 44.2
MAX 29 17 16 40 40 38 71 54 68 154 94 66
MIN 17 15 15 15 32 30 15 20 50 51 44 17
AC-FT 1170 966 934 1820 2080 2230 2450 2670 3420 5760 3860 2630
e Estimated.
10270872 MIDDLE FORK BISHOP CREEK BELOW LAKE SABRINA, NEAR BISHOP, CA--Continued
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1991 - 1996, BY WATER YEAR (WY)
OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
MEAN 17.3 14.9 16.0 22.6 29.4 24.9 25.5 25.5 34.1 73.2 55.9 33.6
MAX 20.5 20.1 24.8 35.2 43.7 41.6 41.1 43.4 57.5 147 107 49.4
(WY) 1994 1995 1994 1994 1993 1995 1996 1996 1996 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 1995 CALENDAR YEAR FOR 1996 WATER YEAR WATER YEARS 1991 - 1996
ANNUAL TOTAL 17197 15118
ANNUAL MEAN 47.1 41.3 31.1
HIGHEST ANNUAL MEAN 47.8 1995
LOWEST ANNUAL MEAN 18.4 1991
HIGHEST DAILY MEAN 230 Jul 11 154 Jul 12 230 Jul 11 1995
LOWEST DAILY MEAN 10 Apr 24 15 Nov 26 6.5 Mar 19 1991
ANNUAL SEVEN-DAY MINIMUM 11 Apr 20 15 Dec 2 6.5 Mar 19 1991
INSTANTANEOUS PEAK FLOW 171 Jul 10 270 Jul 10 1995
INSTANTANEOUS PEAK STAGE 1.59 Jul 10 2.15 Jul 10 1995
ANNUAL RUNOFF (AC-FT) 34110 29990 22560
10 PERCENT EXCEEDS 97 68 63
50 PERCENT EXCEEDS 32 37 22
90 PERCENT EXCEEDS 15 15 8.8
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