11108133 CASTAIC LAKE NEAR CASTAIC, CA

LOCATION.-Lat 34°31'22", long 118°36'43", in NW 1/4 NE 1/4 sec.13, T.5 N., R.16 W., Los Angeles County, Hydrologic Unit 18070102, in 
  intake tower in Castaic Lake and 2.3 mi north of Castaic. 
DRAINAGE AREA.-137 mi2, excludes 18.1 mi2 non-contributing area in Elizabeth Canyon Creek Basin. 
PERIOD OF RECORD.-October 1988 to current year. Prior to October 1988 in files of California Department of Water Resources. 
GAGE.-Water-stage recorder. Datum of gage is sea level. 
REMARKS.-Lake is formed by earthfill dam. Storage began April 1972. Dead storage below outlet tower to downstream distribution system, 
  1,799 acre-ft, elevation, 1,213 ft. Capacity below spillway level, 323,699 acre-ft, elevation 1,515 ft. Lake receives California Aqueduct water 
  diverted from Pyramid Lake (station 11109520) via Castaic Powerplant to Elderberry Forebay (station 11108092). Water is released 
  downstream through Castaic Tunnel No. 1 and to Castaic Lagoon. Records, including extremes, represent total contents at 2400 hours. See 
  schematic diagram of Santa Clara River Basin. 
COOPERATION.-Records were collected by California Department of Water Resources, under the 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 (AT 2400) FOR PERIOD OF RECORD.-Maximum contents, 321,914 acre-ft, Mar. 28, 29, 1993, elevation, 1,514.20 ft; minimum, 
  142,325 acre-ft, Jan. 7, 1995, elevation, 1,415.48 ft. 
EXTREMES (AT 2400) FOR CURRENT YEAR.-Maximum contents, 317,520 acre-ft, May 16, elevation, 1,512.22 ft; minimum,      
  235,948 acre-ft, Sept. 16, elevation, 1,472.14 ft. 
  Capacity table (elevation in feet, and contents, in acre-feet)
  (Based on table provided by California Department of Water Resources in 1978)
	1450	196,414	1490	270,629
	1460	213,807	1500	291,186
	1470	231,964	1510	310,451
	1480	250,894	1520	334,985

                   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    284760   285527   289279   288192   306129   296146   292743   315711   312746   285029   260167   239195
  2    287233   284449   288547   287921   305415   295638   294896   317056   311433   283973   259359   238630
  3    287754   283601   287837   291627   304552   295172   297081   315909   312089   283146   258573   240327
  4    288610   283435   287149   291333   303819   294664   299082   314787   314303   282320   257395   240705
  5    287108   282609   286608   291123   305437   295765   301135   313667   315931   281496   256103   239911
 
  6    285943   284035   285943   290724   304595   295256   300578   311870   315051   280879   254737   239157
  7    284201   284718   285237   294241   305696   294643   302035   312023   313732   280037   253180   238593
  8    285590   285071   284677   293924   304983   293713   306648   314369   312636   279196   251803   237841
  9    286775   286775   284201   293607   304078   292911   310473   314501   311324   278336   251029   236903
 10    285278   286027   283787   294410   303195   292132   313974   313250   310233   277315   250217   239139
 
 11    287942   284822   283477   293987   304336   293523   317476   312089   308709   276499   249619   240459
 12    286442   285610   283001   293755   303539   292406   316968   311958   307298   275482   248849   239515
 13    286879   285922   282465   293734   305934   291207   316152   310822   306215   273049   247888   238386
 14    285444   284449   282052   296698   305005   291291   315271   312965   305113   274873   247120   237634
 15    285586   285195   281352   296337   304056   290116   316130   316262   303970   274061   246354   236697
 
 16    286920   283890   280920   295956   303195   288735   315029   317520   302658   272241   245780   235948
 17    286941   282506   284491   298656   302293   287942   316350   316262   301585   271858   245207   238217
 18    287274   283456   283890   299253   300428   286587   315469   315029   300086   270851   244444   240988
 19    286005   284553   283290   298656   300578   287379   314128   313952   299018   270048   243644   239723
 20    284636   284926   284594   298059   299509   286130   313009   312636   297527   269444   243074   238969
 
 21    283352   286130   284035   301156   300214   288192   311739   313732   296252   268641   242314   238405
 22    281867   286858   283683   300664   299061   286941   313118   316659   295193   267619   241556   237653
 23    283352   286359   283063   306131   297846   285860   313710   315997   293713   266818   240799   236715
 24    284843   285839   285216   306237   296698   284428   314062   314677   292448   266019   240232   238781
 25    286359   287754   284615   305977   297166   285610   314589   313557   291207   265222   239383   239779
 
 26    285092   289446   284076   306042   297719   287441   313491   312636   289928   264624   238630   239383
 27    283849   289049   287441   305588   297144   289007   311958   311280   288672   263829   240742   238818
 28    282465   288505   287212   306475   296677   289844   310451   311717   287629   263035   240516   238254
 29    284014   287754   286941   305696      ---   289991   311280   313623   286587   262222   240894   237503
 30    286671   287087   286629   305675      ---   289258   312746   314303   285901   261431   240516   236715
 31    286504      ---   288359   306821      ---   291270      ---   313842      ---   260621   239761      ---
 
MAX    288610   289446   289279   306821   306129   296146   317476   317520   315931   285029   260167   240988
MIN    281867   282506   280920   287921   296677   284428   292743   310822   285901   260621   238630   235948
 a    1497.76  1498.04  1498.65  1507.33  1502.60  1500.04  1510.05  1510.55  1497.47  1484.98  1474.17  1472.55
 b       2158      583     1272     1862   -10144    -5407    21476     1096   -27941   -25280   -20860    -3046

CAL YR  1996  MAX  317587  MIN  25358  b  23536
WTR YR  1997  MAX  317520  MIN 235948  b -47631