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Water-Year Summary for Site 11370000

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Available Parameters
00054 Reservoir storage(Obs.)  

Water year 2021: 2020-10-01 to 2021-09-30

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USGS Water-Year Summary 2021
11370000 Shasta Lake near Redding, CA
LOCATION - Lat 40°43'08", long 122°25'12" referenced to North American Datum of 1927, in SE 1/4 NW 1/4 sec.15, T.33 N., R.5 W., Shasta County, CA, Hydrologic Unit 18020005, in Shasta Dam on Sacramento River, near right bank, 2 mi downstream from Squaw Creek, and 9.5 mi north of Redding.
DRAINAGE AREA - 6,421 mi², excluding Goose Lake Basin.
PERIOD OF RECORD - November 1942 to current year. Prior to 1950, published as "Shasta Reservoir near Redding." CHEMICAL DATA: Water years 1978-80.
GAGE - Water-stage recorder. Datum of gage is NGVD of 1929 (levels by U.S. Bureau of Reclamation). Prior to July 10, 1944, nonrecording gage at various sites near dam at same datum. Contents based on capacity table dated May 8, 1967, provided by U.S. Bureau of Reclamation.
COOPERATION - Records were provided by U.S. Bureau of Reclamation, not rounded to U.S. Geological Survey standards.
REMARKS - Lake is formed by concrete gravity-type dam completed in 1949; regulation began Dec. 30, 1943. Usable capacity, 4,436,400 acre-ft, between elevations 737.75 ft, invert of lowest set of river outlets, and 1,067.0 ft, top of flashboard gates on drum-type spillway gates. Operating pool from elevation, 840.0 ft, capacity, 587,127 acre-ft, to 1,067.0 ft, capacity, 4,552,090 acre-ft. Dead storage, 115,800 acre-ft. Installation of flashboard gates on top of drum gates completed Nov. 12, 1964. All water passes down the Sacramento River, most of which is through powerplant at dam. Figures given represent total contents at 2400 hours. Lake is used for flood control, power generation, irrigation, and recreation. See schematic diagram of Pit River and McCloud River Basins available from the California Water Science Center.
EXTREMES FOR PERIOD OF RECORD - (at 2400 hours) Maximum contents, 4,550,300 acre-ft, May 19, 1967, elevation, 1,066.94 ft; minimum since first filling, 562,600 acre-ft, Sept. 13, 1977, elevation, 836.68 ft.