2001 California Hydrologic Data Report
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 mi".
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 Basin 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 HOURS)
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 HOURS)
FOR CURRENT YEAR - Maximum contents, 239,207 acre-ft, May 27, elevation, 1,209.41 ft; minimum, 176,538
acre-ft, Nov. 19, elevation, 1,188.17 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 2000 TO SEPTEMBER 2001
DAILY OBSERVATION AT 2400 HOURS
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
1 211802 181486 190635 205741 210784 207155 205564 236624 237736 238375 238375 237545
2 210036 181186 190381 206065 210365 205476 207957 237355 237482 238311 238183 237132
3 208967 180885 190155 205800 209977 204769 209887 238151 238439 237673 237768 236973
4 207541 180585 189872 205829 209620 209650 211502 238087 238599 237514 237927 236973
5 205181 180258 189592 205711 209293 217443 212430 237800 237641 237164 237895 236973
6 203829 179930 189312 205711 208907 219420 214145 236751 236878 237673 238247 236973
7 201522 179685 189060 205741 209175 219236 215683 237991 237228 237895 237831 236793
8 200767 179439 188808 206242 208759 218203 215864 238119 237387 237959 237514 237259
9 198536 179166 188528 205888 209769 215804 217260 238503 237196 238311 237514 236878
10 196409 178893 188248 205653 207957 210724 218719 237545 237132 238279 237800 237196
11 194179 178622 188108 205387 207274 205859 220155 237641 237228 238215 238055 237609
12 191878 178378 188892 205594 205446 203800 221166 239079 237355 238279 238439 237387
13 189620 178189 190889 205299 204121 202982 222177 238983 237482 238439 238023 237196
14 188080 177945 192811 206301 203566 203303 223379 238887 238375 238311 237545 236560
15 187912 177729 195205 206831 203479 204180 223472 238951 237927 238311 237101 236783
16 187632 177404 197529 206360 203362 204916 226628 238983 237418 238343 237704 235956
17 187352 177106 199724 207008 204504 204297 228400 238951 237959 238311 237641 234307
18 187044 176836 202602 208343 205476 204946 230122 239079 237831 237800 237291 233676
19 186739 176538 205653 209026 208105 204034 231783 238887 237959 237418 237069 233423
20 186544 176673 206978 210215 212580 204680 233676 238663 237673 237641 237704 231972
21 186239 179357 206890 210365 219298 205476 233865 238631 237800 238247 238055 231218
22 186100 181623 206477 212281 221687 204621 233802 238055 237514 238183 238215 231155
23 185850 184212 206212 213964 219696 204887 233581 237895 237641 238087 237927 230404
24 185239 186794 205947 214778 218081 205918 233771 237895 237800 238087 237704 229840
25 184906 188640 205741 215502 216805 205623 233960 237704 237514 238023 237609 229120
26 184378 187940 205741 215623 215080 204563 234149 238439 238183 238247 237545 228182
27 183634 187212 205859 214567 212610 204063 234307 239207 238983 238311 237132 226286
28 183441 188584 206065 212251 210724 203187 235035 237800 237577 238343 237323 225696
29 182807 190268 206212 211981 --- 203858 235766 237259 237482 237959 237259 225696
30 182449 191341 206065 211502 --- 204474 235861 238311 238119 238087 236656 223657
31 181816 --- 205918 211173 --- 205034 --- 239111 --- 238151 237768 ---
a 1190.11 1193.53 1196.56 1200.35 1200.20 1198.28 1208.36 1209.38 1209.07 1209.08 1208.96 1204.46
b -31394 +9525 +14577 +5255 -449 -5690 +30827 +3250 -992 +32 -383 -14111
MAX 211802 191341 206978 215623 221687 219420 235861 239207 238983 238439 238439 237609
MIN 181816 176538 188108 205299 203362 202982 205564 236624 236878 237164 236656 223657
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