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Water-Year Summary for Site 11293590

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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
11293590 North Fork Stanislaus River Diversion Reservoir near Big Meadows, CA
LOCATION - Lat 38°26'18", long 120°01'00" referenced to North American Datum of 1927, Alpine County, CA, Hydrologic Unit 18040010, unsurveyed, in Stanislaus National Forest, on left bank of diversion dam on North Fork Stanislaus River, and 5.6 mi northeast of Big Meadows.
DRAINAGE AREA - 28.7 mi².
REVISIONS HISTORY - WDR CA-92-3: 1991.
SURFACE-WATER RECORDS
PERIOD OF RECORD - February 1990 to current year. Contents less than 12 acre-ft and end of month elevations for November 1990 to March 1991 published in WDR CA-91-3 are unreliable and should not be used.
GAGE - Water-stage recorder. Prior to Sept. 14, 1990, contents estimated on basis of periodic observations of nonrecording gage. Datum of gage is NGVD of 1929 (levels by Calaveras County Water District).
COOPERATION - Records were collected by Northern California Power Agency, under general supervision of the U.S. Geological Survey, in connection with Federal Energy Regulatory Commission project no. 2409.
REMARKS - Reservoir is formed by gravity-type concrete dam completed in October 1987. Contents based on capacity table dated July 1989. Capacity, 120 acre-ft, between elevations 6,672.0 ft, sill of emergency release gate, and 6,695.0 ft, crest of spillway. Reservoir is used for power development and fishery enhancement. Flow is diverted through tunnel to New Spicer Meadow Reservoir (station 11293770). Records, including extremes, represent total contents at 2400 hours. Elevations below 6,678.9 ft are not recorded. See schematic diagram of Stanislaus River Basin available from the California Water Science Center.
EXTREMES FOR PERIOD OF RECORD - Maximum contents, 212 acre-ft, Jan. 1, 1997, elevation, 6,699.6 ft; minimum, 4 acre-ft, many days in 1999, 2000, 2002, and 2003.