10271200 BISHOP CREEK ABOVE POWERPLANT NO. 6, NEAR BISHOP, CA
LOCATION.-Lat 37°21'00", long 118°27'42", in SE 1/4 SE 1/4 sec.9, T.7 S., R.32 E., Inyo County, Hydrologic Unit 18090102, on left bank adjacent to
Powerplant No. 6 tailrace and 3.8 mi west of Bishop.
DRAINAGE AREA.-104 mi2.
PERIOD OF RECORD.-October 1990 to current year. If records for Bishop Creek Powerplant No. 6 Conduit (station 10271060) are combined with this record, a record
equivalent to that published since October 1936 as Bishop Creek below Powerplant No. 6, near Bishop, discontinued September 1990, can be obtained. Monthly and
yearly mean discharge prior to October 1969, published in WSP 2127.
GAGE.-Water-stage recorder and Parshall flume. Elevation of gage is 4,510 ft above sea level, from topographic map.
REMARKS.-Flow regulated for power development by South Lake, Lake Sabrina, and Intake No. 2 Reservoir (stations 10270700, 10270870, and 10270875), combined
capacity, 20,311 acre-ft, and five powerplants. Water is diverted into basin via Birch-McGee Diversion (station 10270900). Water is diverted out of basin via
Abelour Ditch (station 10270985) for irrigation and domestic use. Diversion to Bishop Creek Powerplant No. 6 (station 10271060) bypasses this station and is
published as a line item below. 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, 453 ft3/s, July 23, 1998, gage height, 3.77 ft; no flow on many days in July and August 1992.
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 3.7 13 1.7 2.3 .33 1.4 .66 .39 .88 161 164 33
2 3.6 14 1.7 2.2 1.3 1.5 .74 .37 1.4 158 152 35
3 3.8 12 1.9 2.0 2.1 1.5 .61 .37 .89 158 143 41
4 3.7 3.9 1.7 2.0 65 1.5 .57 1.6 .50 152 134 79
5 3.4 3.1 1.7 e2.0 81 1.5 .40 3.3 .42 151 133 118
6 3.4 2.3 1.7 e2.0 59 1.4 .40 3.2 .35 152 137 121
7 3.4 2.3 1.7 2.0 22 1.5 .38 2.8 .33 160 161 110
8 3.4 44 1.7 2.0 22 1.5 .39 2.6 .54 167 191 98
9 3.2 1.2 1.5 2.0 17 1.5 .83 2.2 1.1 179 189 94
10 2.6 2.0 .60 1.8 3.0 1.5 1.8 1.7 2.7 201 178 86
11 2.3 1.8 .39 1.7 2.6 1.5 1.7 1.7 2.4 212 168 81
12 3.8 1.7 .36 1.7 2.5 1.5 1.7 1.5 13 200 158 77
13 2.7 1.2 .34 1.7 2.0 1.2 1.5 1.5 10 204 164 53
14 2.6 1.2 .34 1.7 2.1 1.2 1.3 1.4 1.5 202 158 40
15 2.6 1.2 .35 1.7 2.0 1.2 1.2 1.3 17 190 151 36
16 2.6 1.2 .34 1.7 2.0 1.2 .92 1.1 55 176 143 11
17 2.6 1.1 1.1 1.7 1.7 1.2 .74 .99 53 188 123 2.1
18 2.6 1.1 2.0 1.7 1.7 1.2 .73 .74 45 201 100 1.3
19 2.3 .81 1.8 1.5 1.7 1.2 .61 .64 49 218 81 .39
20 35 .48 1.7 1.2 1.7 1.2 .61 .58 55 247 71 1.5
21 22 1.4 1.6 1.9 1.7 1.2 .61 .46 60 338 58 .40
22 128 2.5 1.5 .42 1.7 1.2 .61 .46 60 356 49 .32
23 135 2.6 2.0 .34 1.8 1.2 .46 .47 65 396 45 .28
24 45 2.6 1.3 .34 1.5 1.2 .46 .47 62 420 26 .28
25 39 2.6 1.3 .32 1.5 1.4 .43 .42 67 407 11 .26
26 45 2.3 1.2 .32 1.5 2.4 .43 .43 79 333 17 .25
27 108 2.0 1.2 .31 1.5 .62 .44 .45 76 279 21 .26
28 137 2.0 1.1 .31 1.5 .46 .43 .41 75 259 20 .55
29 198 1.8 1.2 .31 --- .36 .43 .42 84 233 21 2.1
30 175 1.7 1.1 .31 --- .35 .42 .44 114 218 25 .67
31 34 --- 1.8 .31 --- .38 --- .41 --- 188 29 ---
TOTAL 1159.3 131.09 39.92 41.79 305.43 38.17 22.51 34.82 1052.01 7104 3221 1123.66
MEAN 37.4 4.37 1.29 1.35 10.9 1.23 .75 1.12 35.1 229 104 37.5
MAX 198 44 2.0 2.3 81 2.4 1.8 3.3 114 420 191 121
MIN 2.3 .48 .34 .31 .33 .35 .38 .37 .33 151 11 .25
AC-FT 2300 260 79 83 606 76 45 69 2090 14090 6390 2230
a 4900 5970 5430 5470 4450 5880 6270 6320 8530 8820 8970 8030
e Estimated.
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1991 - 1998, BY WATER YEAR (WY)
MEAN 6.15 3.15 1.60 6.58 2.48 2.42 2.91 8.69 35.5 90.6 45.3 8.17
MAX 37.4 14.9 5.34 38.6 10.9 7.54 15.9 29.9 86.7 240 171 37.5
(WY) 1998 1994 1996 1997 1998 1994 1996 1996 1997 1995 1995 1998
MIN .11 .19 .19 .17 .21 .19 .18 .12 .064 .035 .048 .082
(WY) 1993 1991 1993 1993 1993 1992 1992 1992 1992 1992 1992 1992
SUMMARY STATISTICS FOR 1997 CALENDAR YEAR FOR 1998 WATER YEAR WATER YEARS 1991 - 1998
ANNUAL TOTAL 9458.63 14273.70
ANNUAL MEAN 25.9 39.1 18.0
HIGHEST ANNUAL MEAN 43.2 1995
LOWEST ANNUAL MEAN .34 1992
HIGHEST DAILY MEAN 198 Oct 29 420 Jul 24 420 Jul 24 1998
LOWEST DAILY MEAN .34 Dec 13 .25 Sep 26 .00 Jul 27 1992
ANNUAL SEVEN-DAY MINIMUM .39 Dec 10 .29 Sep 21 .00 Jul 27 1992
INSTANTANEOUS PEAK FLOW 453 Jul 23 453 Jul 23 1998
INSTANTANEOUS PEAK STAGE 3.77 Jul 23 3.77 Jul 23 1998
ANNUAL RUNOFF (AC-FT) 18760 28310 13010
ANNUAL DIVERSION (AC-FT) a 84670 79050
10 PERCENT EXCEEDS 106 158 60
50 PERCENT EXCEEDS 2.3 1.8 1.5
90 PERCENT EXCEEDS .61 .41 .15
a Diversion, in acre-feet, to Bishop Creek Powerplant No. 6, provided by Southern California Edison Co.
USGS Water Resources of California
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Last modified: Wed Aug 4 09:40:26 PDT 1999