10270870 LAKE SABRINA NEAR BISHOP, CA

LOCATION.-Lat 38°12'44", long 118°36'42", unsurveyed, T.8 S., R.31 E., Inyo County, Hydrologic Unit 18090102, Inyo National Forest, in 
  valve house at base of dam on Middle Fork Bishop Creek and 15.8 mi southwest of Bishop. 
DRAINAGE AREA.-16.5 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 Unpublished records prior to October 1990 available in files of Southern California 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. Datum of gage is sea level (levels by Southern California Edison Co.). 
REMARKS.-Reservoir is formed on natural lake by rock-fill dam completed in 1908. Usable capacity, 7,350 acre-ft between elevations 
  9,068.42 ft, invert of outlet, and 9,131.62 ft, crest of spillway. Figures given represent usable contents. 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. Contents not rounded to U.S. Geological Survey standards. 
EXTREMES FOR PERIOD OF RECORD.-Maximum contents, 7,598 acre-ft, July 10, 1995, elevation, 9,132.89 ft; minimum, no storage   
  Apr. 8-14, 1994. 
EXTREMES FOR CURRENT YEAR.-Maximum contents, 7,526 acre-ft, June 21, elevation, 9,132.52; minimum, 756 acre-ft, Apr. 14, elevation, 
  9091.65 ft. 
  Capacity table (elevation, in feet, and contents, in acre-feet)
  (Based on survey by Southern California Edison Co., dated Aug. 12, 1981) 
	9,068.42	0	9,100	1,926
	9,070	1	9,110	3,501
	9,080	15	9,120	5,196
	9,090	558	9,135	7,912

                   RESERVOIR STORAGE (ACRE-FEET), WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997

                                        DAILY OBSERVATION AT 2400 HOURS
 
DAY       OCT      NOV      DEC      JAN      FEB      MAR      APR      MAY      JUN      JUL      AUG      SEP
 
  1      5390     4863     4368     4091     3935     2000      813     1457     6031     7241     7134     7063
  2      5386     4849     4346     4349     3860     1930      796     1505     6234     7210     7109     7071
  3      5370     4830     4322     4501     3787     1869      789     1556     6426     7217     7094     7080
  4      5356     4809     4305     4569     3712     1830      785     1620     6666     7243     7092     7090
  5      5342     4783     4282     4617     3634     1785      781     1691     6857     7274     7111     7090
 
  6      5333     4754     4263     4627     3560     1739      777     1779     6934     7291     7136     7078
  7      5326     4732     4243     4617     3483     1695      775     1872     7005     7297     7161     7059
  8      5321     4713     4227     4598     3405     1650      773     1970     7076     7295     7179     7038
  9      5315     4686     4209     4574     3329     1607      767     2088     7142     7293     7182     7051
 10      5312     4658     4211     4545     3253     1565      764     2219     7198     7301     7175     7059
 
 11      5301     4632     4206     4509     3177     1526      762     2360     7252     7313     7157     7057
 12      5294     4600     4199     4465     3109     1485      764     2513     7291     7320     7148     7048
 13      5285     4574     4187     4424     3039     1444      758     2702     7320     7332     7142     7015
 14      5278     4543     4172     4368     2970     1404      756     2909     7361     7336     7138     6988
 15      5275     4504     4157     4341     2901     1364      777     3149     7373     7336     7138     6986
 
 16      5259     4482     4140     4316     2834     1319      798     3381     7373     7336     7140     6984
 17      5248     4503     4121     4287     2772     1272      819     3604     7391     7314     7142     6965
 18      5236     4492     4103     4260     2710     1229      849     3837     7430     7307     7142     6949
 19      5226     4482     4084     4232     2646     1189      881     4037     7467     7305     7140     6907
 20      5215     4460     4067     4217     2585     1151      924     4216     7508     7307     7126     6861
 
 21      5205     4473     4064     4189     2523     1118      978     4382     7526     7307     7124     6811
 22      5192     4477     4072     4164     2460     1083     1036     4531     7516     7320     7121     6760
 23      5180     4472     4066     4150     2393     1047     1088     4667     7498     7355     7117     6708
 24      5182     4463     4066     4125     2324     1010     1115     4780     7481     7389     7109     6670
 25      5149     4451     4064     4147     2260      977     1142     4851     7471     7371     7111     6640
 
 26      5135     4436     4062     4145     2194      951     1186     4890     7457     7342     7111     6600
 27      5103     4419     4066     4148     2125      926     1251     4942     7424     7313     7105     6560
 28      4987     4412     4061     4140     2062      902     1310     5046     7381     7281     7099     6526
 29      4902     4397     4054     4106      ---      879     1351     5229     7338     7246     7090     6500
 30      4887     4387     4046     4056      ---      859     1404     5481     7295     7204     7078     6473
 31      4876      ---     4031     3997      ---      835      ---     5771      ---     7159     7069      ---
 
MAX      5390     4863     4368     4627     3935     2000     1404     5771     7526     7389     7182     7090
MIN      4876     4387     4031     3997     2062      835      756     1457     6031     7159     7069     6473
 a    9118.16  9115.30  9113.19  9112.99  9100.91  9092.25  9096.42  9123.24  9131.34  9130.64  9130.17  9127.05
 b       -517     -489     -356      -34    -1935    -1227     +569    +4367    +1524     -136      -90     -596

CAL YR 1996   MAX 7498  MIN 376  b -1842
WTR YR 1997   MAX 7526  MIN 756  b +1080