11371700 WHISKEYTOWN LAKE NEAR IGO, CA

LOCATION.--Lat 40°37'03", long 122°31'31", unsurveyed, Shasta County, Hydrologic Unit 18010112, Whiskeytown- Shasta-Trinity National 
  Recreation Area, at outlet works to Spring Creek Powerplant on Clear Creek, 1.8 mi downstream from Whiskey Creek, and 7.8 mi northeast 
  of Igo. 
DRAINAGE AREA.--200 mi2. 
PERIOD OF RECORD.--May 1963 to current year. Prior to October 1964 published as Whiskeytown Reservoir near Igo. 
GAGE.--Water-stage recorder. Datum of gage is sea level (levels by U.S. Bureau of Reclamation). Contents based on capacity table dated April 
  1962 provided by U.S. Bureau of Reclamation. 
REMARKS.--Lake is formed by earth and rockfill dam. Storage began in May 1963. Usable capacity, 241,088 acre-ft between elevations 972.0 ft, 
  invert of sluice pipe, and 1,210.00 ft, crest of glory hole spillway. Dead storage 8 acre-ft. Normal operating pool is from elevation 1,197.0 ft, 
  capacity, 201,288 acre-ft, to 1,210.0 ft, capacity, 241,096 acre-ft. Transbasin water enters the reservoir through Judge Francis Carr Powerplant 
  (station 11525430) and is released through Spring Creek Tunnel to Spring Creek Powerplant (station 11371600) and Keswick Reservoir. 
  Figures given represent total contents at 2400 hours. Lake is used for power generation and recreation. See schematic diagrams of upper 
  Sacramento River and Pit and McCloud River basins. 
COOPERATION.--Records were provided by U.S. Bureau of Reclamation, not rounded to U.S. Geological Survey standards. 
EXTREMES (AT 2400) FOR PERIOD OF RECORD.--Maximum contents, 258,600 acre-ft, Mar. 2, 1983, elevation, 1,215.34 ft; minimum since 
  first filling, 145,562 acre-ft, Dec. 27, 1992, elevation, 1,176.05 ft. 
EXTREMES (AT 2400) FOR CURRENT YEAR.--Maximum contents, 252,781 acre-ft, Jan. 1, elevation, 1,213.59 ft; minimum, 194,777 acre-ft, 
  Feb. 25, elevation, 1,194.74 ft. 
  Capacity table (elevation, in feet, and contents, in acre-feet)
  (Based on survey by U.S. Bureau of Reclamation in 1962)

	1,015	714	1,040	3,055	1,080	15,076	1,140	73,960
	1,020	994	1,050	4,898	1,100	27,542	1,180	155,276
	1,030	1,797	1,060	7,418	1,120	46,701	1,220	274,389

                   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    239143   217716   205653   252781   204857   196782   205653   238023   238951   237514   236973   237323
  2    238471   217200   205240   251727   204769   197443   207155   237609   239496   237196   237577   237959
  3    238279   216562   205358   246691   205446   197386   208640   237228   239496   238567   237577   237895
  4    238151   215804   205329   242289   205947   197845   210933   237641   237386   238119   237069   237927
  5    238439   215110   205770   238631   206065   200766   212939   238823   237768   237450   236910   237768

  6    237927   214356   205682   234118   203975   204034   214205   239560   238055   236910   237260   237895
  7    238311   213692   206919   229339   201639   206625   214084   240040   238439   237260   237991   237959
  8    238983   212910   207868   226566   198710   206389   215261   239688   238791   237514   237800   238119
  9    238855   211562   214718   223873   197070   206006   216622   239367   238279   237927   237927   238439
 10    237673   209442   217959   223349   197098   205888   217230   239079   238311   238183   237895   238439

 11    236242   208996   214748   222639   197931   205770   218446   238855   238119   238567   237895   238279
 12    235448   208076   210245   221809   196926   205623   219604   238759   237927   238183   238215   238567
 13    234307   207274   207868   220676   196495   205417   219604   238567   237927   237800   238055   237959
 14    233266   206772   207601   219573   195489   206625   221105   238439   237800   237450   237863   237545
 15    232161   206477   207067   218385   195604   206802   221932   238087   237863   237132   237863   238087

 16    231186   206242   206389   217139   196437   207363   222516   237863   237863   236783   237927   238055
 17    230435   206507   206684   214507   196294   205505   225354   237641   237800   236528   238087   238023
 18    230748   207274   207304   211562   195776   205358   227467   237768   237991   236528   238215   237482
 19    231092   207541   207185   209115   195148   205181   229527   238183   238055   236846   237991   237545
 20    230717   205829   207067   206978   195319   205004   230873   238407   237514   237132   238247   237545

 21    230341   205682   205329   207779   195547   204769   231155   238503   237514   237386   238471   237609
 22    228681   205682   204975   204887   195949   204563   232729   237895   237577   237641   238055   237609
 23    226939   205122   204474   204034   196323   204327   232477   237418   237577   237577   237927   238087
 24    225323   204739   205034   202340   195719   205446   232130   237991   237641   237514   237959   238151
 25    223503   204151   205034   204857   194777   205594   233991   238791   237863   237514   238119   238279

 26    222608   205240   205387   208907   195233   205711   236370   239175   237800   238247   238439   238343
 27    221595   205476   206065   210275   196380   205741   237450   239208   237927   238247   238727   238407
 28    220584   205358   207422   210694   196236   205770   237291   239367   238087   237069   238759   238407
 29    220370   205417   213783   209412      ---   205476   238599   237609   237673   236592   238439   238151
 30    219665   205564   220523   207571      ---   205004   238407   237641   237641   236465   238151   238279
 31    218598      ---   240328   206242      ---   204445      ---   238503      ---   236783   237482      ---

MAX    239143   217716   240328   252781   206065   207363   238599   240040   239496   238567   238759   238567
MIN    218598   204151   204474   202340   194777   196782   205653   237228   237386   236465   236910   237323
 a    1202.81  1198.46  1209.76  1198.69  1195.25  1198.08  1209.16  1209.19  1208.92  1208.65  1208.87  1209.12
 b     -20257   -13034   +34764   -34086   -10006    +8209   +33962      +96     -862     -858     +699     +797

CAL YR 1996 b +35500
WTR YR 1997 b   -576