10270700 SOUTH LAKE NEAR BISHOP, CA

LOCATION.-Lat 37°10'21", long 118°33'52", unsurveyed, T.9 S., R.31 E., Inyo County, Hydrologic Unit 18090102, Inyo National Forest, near 
  spillway at right abutment of Hillside Dam on South Fork Bishop Creek and 16.0 mi southwest of Bishop. 
DRAINAGE AREA.-12.9 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 Unpublished records prior to October 1990 available in files of Southern California 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 1910. Usable capacity, 12,883 acre-ft between elevations 
  9,621.20 ft, invert of outlet tunnel, and 9,751.31 ft, crest of spillway. Water is received from Green Creek via Green Creek Conduit (station 
  10270680). 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, 13,038 acre-ft, Aug. 4, 1993, elevation, 9,752.21 ft; minimum, 280 acre-ft, 
  Apr. 18-25, 1993, elevation, unknown. 
EXTREMES FOR CURRENT YEAR.-Maximum contents, 13,007 acre-ft, July 11, elevation, 9,752.03 ft; minimum, 1,089 acre-ft, Apr. 13, 
  elevation, 9,642.93 ft. 
  Capacity table (elevation, in feet, and contents, in acre-feet)
  (Based on survey by Southern California Edison Co., dated Aug. 5, 1981) 
	9,621.2	0	9,690	4,533
	9,630	417	9,710	6,654
	9,650	1,493	9,730	9,392
	9,670	2,820	9,756	13,704

                   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     11204    10237     9536     8956     7498     4788     1396     1905     6918    12310    12742    12553
  2     11109    10210     9502     9102     7407     4667     1328     1966     7169    12392    12696    12556
  3     11043    10190     9465     9152     7315     4552     1268     2026     7407    12484    12663    12573
  4     11032    10154     9448     9187     7228     4412     1222     2095     7655    12580    12659    12560
  5     11019    10117     9415     9189     7143     4280     1186     2173     7862    12687    12680    12530

  6     11007    10095     9387     9170     7057     4144     1159     2258     8051    12801    12684    12513
  7     10998    10076     9367     9144     6975     4012     1139     2357     8229    12919    12678    12494
  8     10988    10051     9341     9126     6884     3879     1125     2464     8423    12979    12680    12482
  9     10978    10024     9312     9080     6806     3750     1110     2591     8618    12993    12713    12467
 10     10965     9994     9310     9033     6724     3620     1103     2726     8781    13004    12739    12441

 11     10954     9969     9306     8978     6639     3490     1100     2875     8950    13007    12723    12436
 12     10936     9933     9295     8916     6532     3361     1091     3047     9106    12999    12710    12434
 13     10926     9892     9281     8838     6439     3230     1089     3251     9239    12999    12706    12431
 14     10901     9850     9247     8795     6339     3111     1091     3466     9378    13000    12706    12433
 15     10879     9801     9227     8714     6246     2987     1102     3698     9499    12990    12706    12405

 16     10866     9784     9212     8641     6144     2857     1122     3913     9626    12974    12708    12393
 17     10856     9795     9181     8564     6037     2741     1147     4125     9774    12966    12713    12364
 18     10822     9790     9157     8487     5933     2630     1177     4342     9972    12966    12711    12371
 19     10799     9773     9125     8406     5831     2522     1213     4530    10240    12966    12710    12374
 20     10776     9766     9089     8321     5725     2416     1258     4715    10515    12957    12697    12368

 21     10767     9766     9080     8246     5621     2318     1319     4883    10765    12948    12694    12356
 22     10757     9759     9079     8181     5520     2221     1386     5037    10975    12941    12689    12332
 23     10746     9759     9071     8116     5415     2128     1443     5182    11171    12969    12673    12293
 24     10712     9754     9057     8053     5322     2036     1484     5306    11338    12966    12675    12257
 25     10686     9729     9039     8011     5225     1954     1530     5410    11514    12943    12680    12219

 26     10655     9698     9016     7954     5116     1866     1585     5511    11682    12917    12677    12204
 27     10632     9671     8998     7897     5001     1786     1655     5639    11845    12896    12672    12184
 28     10468     9630     8980     7826     4877     1708     1716     5813    11994    12864    12661    12141
 29     10339     9595     8963     7745      ---     1635     1778     6036    12112    12845    12644    12104
 30     10310     9574     8944     7666      ---     1554     1838     6309    12206    12808    12611    12067
 31     10270      ---     8922     7582      ---     1477      ---     6630      ---    12770    12584      ---

MAX     11204    10237     9536     9189     7498     4788     1838     6630    12206    13007    12742    12573
MIN     10270     9574     8922     7582     4877     1477     1089     1905     6918    12310    12584    12067
 a    9735.60  9731.18  9726.93  9717.59  9693.47  9649.72  9655.66  9709.79  9747.37  9750.66  9749.58  9746.55
 b      -1043     -696     -652    -1340    -2705    -3400     +361    +4792    +5576     +564     -186     -517

CAL YR 1996   MAX 12971  MIN 2445  b -2563
WTR YR 1997   MAX 13007  MIN 1089  b  +754