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Water-Year Summary for Site 11313500

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Available Parameters
00054 Reservoir storage(Obs.)  

Water year 2023: 2022-10-01 to 2023-09-30
 
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USGS Water-Year Summary 2023
11313500 Salt Springs Reservoir near West Point, CA
LOCATION - Lat 38°29'55", long 120°12'52" referenced to North American Datum of 1927, in NW 1/4 SE 1/4 sec.33, T.8 N., R.16 E., Calaveras County, CA, Hydrologic Unit 18040012, in Eldorado National Forest, near center of Salt Springs Dam on North Fork Mokelumne River, 1.8 mi upstream from Cole Creek, and 18 mi northeast of West Point.
DRAINAGE AREA - 169 mi².
REVISIONS HISTORY - WSP 1930: Drainage area. WDR CA-00-3: 1999 (month-end gage heights). WDR US-2008: 2007 (daily, change in contents).
SURFACE-WATER RECORDS
PERIOD OF RECORD - March 1931 to current year. Prior to October 1964, records published as usable contents.
GAGE - Water-stage recorder. Prior to Oct. 1, 1991, nonrecording gage read once daily. Datum of gage is NGVD of 1929 (levels by Pacific Gas and Electric Company).
COOPERATION - Records were provided by Pacific Gas and Electric Company, under general supervision of the U.S. Geological Survey, in connection with Federal Energy Regulatory Commission project no. 137.
REMARKS - Reservoir is formed by concrete-faced rock-fill dam, completed in 1931; storage began in March 1931. Contents based on capacity table dated October 1964. Capacity, 141,857 acre-ft, between elevations 3,667.75 ft, outlet drain, and 3,958.0 ft, top of radial gates. Storage of 1,860 acre-ft available for release to river only. Water is released through Salt Springs Powerplant just downstream from dam and discharged into Tiger Creek Powerplant Conduit (station 11314000). Figures given, including extremes, represent total contents at 2400 hours. See schematic diagram of Mokelumne River Basin available from the California Water Science Center.
EXTREMES FOR PERIOD OF RECORD - Maximum contents, 142,208 acre-ft, June 22, 1999, elevation, 3,958.36 ft; no contents at times in 1932-33, 1945, 1962.