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  Unpublished records prior to October 1990 available in files of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, 12,971 acre-ft, July 28, elevation, 9,751.82 ft; minimum,
   2,445 acre-ft, Apr. 30, elevation, 9,664.96 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 1995 TO SEPTEMBER 1996
                                        DAILY OBSERVATION AT 2400 HOURS

DAY       OCT      NOV      DEC      JAN      FEB      MAR      APR      MAY      JUN      JUL      AUG      SEP

  1     12623    12378    11912    11470     9832     7785     4778     2464     4367    10081    12938    12921
  2     12615    12364    11895    11456     9766     7680     4670     2515     4475    10254    12929    12917
  3     12613    12349    11876    11442     9705     7580     4557     2559     4613    10489    12914    12910
  4     12599    12342    11866    11422     9659     7476     4446     2605     4799    10728    12903    12888
  5     12592    12322    11843    11392     9596     7382     4333     2646     5038    10945    12888    12889

  6     12582    12298    11818    11374     9539     7275     4226     2682     5321    11161    12876    12881
  7     12578    12276    11803    11364     9478     7184     4121     2725     5625    11384    12881    12870
  8     12577    12272    11783    11351     9415     7078     4023     2766     5938    11602    12889    12851
  9     12573    12248    11756    11331     9344     6981     3926     2816     6253    11826    12898    12824
 10     12573    12236    11737    11306     9272     6872     3821     2878     6533    12030    12898    12803

 11     12561    12228    11729    11249     9200     6772     3726     2964     6775    12221    12896    12777
 12     12556    12213    11752    11178     9131     6672     3620     3077     7000    12410    12896    12744
 13     12551    12194    11749    11097     9053     6581     3526     3204     7236    12580    12912    12711
 14     12549    12179    11754    11027     8981     6488     3432     3356     7485    12751    12917    12699
 15     12542    12165    11734    10947     8904     6390     3338     3543     7721    12865    12919    12658

 16     12535    12155    11729    10872     8828     6301     3257     3740     7947    12931    12919    12623
 17     12534    12145    11716    10822     8740     6205     3180     3873     8138    12941    12919    12606
 18     12530    12126    11706    10762     8670     6109     3087     4003     8333    12934    12912    12542
 19     12520    12112    11686    10674     8622     6015     2992     4071     8527    12929    12896    12446
 20     12511    12096    11664    10607     8575     5925     2904     4118     8725    12924    12888    12345

 21     12503    12075    11642    10541     8526     5824     2813     4163     8904    12922    12876    12241
 22     12486    12063    11634    10470     8455     5724     2726     4202     9079    12926    12860    12138
 23     12477    12052    11607    10411     8407     5623     2648     4219     9250    12929    12860    12035
 24     12465    12035    11599    10342     8326     5537     2579     4235     9404    12934    12881    11932
 25     12462    12008    11589    10288     8259     5438     2536     4237     9542    12940    12898    11829

 26     12453    11984    11572    10222     8177     5354     2506     4238     9648    12943    12914    11727
 27     12443    11972    11566    10159     8083     5255     2485     4237     9724    12948    12922    11621
 28     12427    11961    11543    10097     7983     5156     2462     4243     9798    12971    12924    11521
 29     12417    11950    11533    10038     7883     5067     2449     4254     9868    12967    12927    11422
 30     12414    11934    11514     9967      ---     4972     2445     4272     9967    12953    12924    11313
 31     12397      ---    11485     9900      ---     4878      ---     4300      ---    12941    12924      ---

MAX     12623    12378    11912    11470     9832     7785     4778     4300     9967    12971    12938    12921
MIN     12397    11934    11485     9900     7883     4878     2445     2464     4367    10081    12860    11313
 a    9748.49  9745.76  9743.07  9733.26  9719.79  9693.48  9664.96  9687.56  9733.69  9751.65  9751.55  9742.03
 b       -250     -463     -449    -1585    -2017    -3005    -2433    +1855    +5667    +2974      -17    -1611

CAL YR 1995   MAX 13002  MIN  989  b +1867
WTR YR 1996   MAX 12971  MIN 2445  b -1334

  a Elevation, in feet, at end of month.
  b Change in contents, in acre-feet.