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 Unpublished records prior to October 1990 available in files of Southern California Edison Co. 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, 7,541 acre-ft, July 21, elevation, 9,132.60; minimum, 802 acre-ft, Apr. 28, elevation, 9091.98 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 1997 TO SEPTEMBER 1998

                                        DAILY OBSERVATION AT 2400 HOURS
 DAY       OCT      NOV      DEC      JAN      FEB      MAR      APR      MAY      JUN      JUL      AUG      SEP
 
  1      6445     4603     3762     3316     2637     2363     1620      831     1207     5490     7289     7241
  2      6415     4537     3740     3296     2638     2344     1576      845     1282     5615     7243     7270
  3      6387     4503     3724     3278     2634     2327     1542      863     1356     5741     7231     7283
  4      6359     4475     3697     3255     2621     2303     1506      886     1388     5847     7248     7303
  5      6329     4451     3691    e3233     2608     2283     1463      901     1433     5942     7266     7338
 
  6      6296     4431     3691     3211     2618     2260     1424      913     1515     6020     7291     7367
  7      6262     4405     3686     3188     2621     2237     1382      923     1583     6105     7311     7361
  8      6232     4376     3682     3164     2621     2216     1343      930     1692     6229     7340     7338
  9      6192     4349     3676     3144     2615     2188     1300      939     1781     6470     7336     7314
 10      6155     4327     3661     3126     2612     2165     1256      946     1855     6642     7303     7285
 
 11      6101     4299     3651     3105     2604     2139     1217      954     1905     6750     7262     7229
 12      6064     4271     3636     3089     2587     2115     1175      956     1982     6836     7250     7161
 13      6048     4243     3628     3068     2571     2092     1135      958     2032     6932     7239     7150
 14      6007     4214     3616     3052     2566     2073     1096      954     2119     6926     7227     7134
 15      5956     4185     3604     3039     2557     2047     1057      951     2278     7001     7215     7113
 
 16      5922     4157     3586     3022     2540     2021     1013      954     2485     7097     7192     7090
 17      5874     4126     3571     2997     2531     1996      979      948     2664     7210     7169     7065
 18      5825     4099     3555     2981     2513     1972      954      944     2844     7354     7161     7038
 19      5787     4084     3537     2963     2499     1947      926      946     3034     7459     7159     7022
 20      5786     4057     3530     2943     2482     1924      911      954     3237     7518     7150     7011
 
 21      5728     4031     3504     2915     2470     1900      889      960     3441     7541     7146     7001
 22      5570     4004     3488     2892     2462     1882      886      964     3646     7535     7142     6990
 23      5485     3974     3466     2868     2459     1860      843      979     3849     7535     7130     6978
 24      5439     3943     3450     2841     2451     1844      834     1002     4054     7530     7123     6890
 25      5395     3908     3435     2818     2439     1826      823     1041     4292     7488     7119     6936
 
 26      5338     3903    e3420     2788     2425     1822      813     1063     4533     7447     7117     6955
 27      5233     3873    e3405     2760     2403     1798      806     1080     4747     7424     7126     6936
 28      5102     3844    e3390     2733     2385     1769      802     1091     4972     7416     7138     6928
 29      4902     3814     3376     2714      ---     1736      804     1106     5205     7406     7150     6926
 30      4756     3782     3360     2684      ---     1700      817     1118     5376     7385     7167     6917
 31      4674      ---     3340     2656      ---     1658      ---     1152      ---     7350     7206      ---
 
MAX      6445     4603     3762     3316     2638     2363     1620     1152     5376     7541     7340     7367
MIN      4674     3782     3340     2656     2385     1658      802      831     1207     5490     7117     6890
 a    9116.98  9111.70  9109.02  9104.76  9103.02  9098.18  9092.10  9094.64  9121.02  9131.62  9130.88  9129.38
 b      -1799     -892     -442     -684     -271     -727     -841     +335    +4224    +1974     -144     -289
CAL YR 1997   MAX 7526  MIN 756  b -691
WTR YR 1998   MAX 7541  MIN 802  b +444
 
  	e  Estimated.
	a  Elevation, in feet, at end of month.
	b  Change in contents, in acre feet.
      

USGS Water Resources of California

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Last modified: Wed Aug 4 09:40:26 PDT 1999