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Water-Year Summary for Site USGS 11293770

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Available Parameters
00054 Reservoir storage(Obs.)  

Water year 2025: 2025-10-01 to 2026-09-30
 
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USGS Water-Year Summary 2025
11293770 New Spicer Meadow Reservoir near Big Meadows, CA
LOCATION - Lat 38°23'35", long 119°59'53" referenced to North American Datum of 1927, in NW 1/4 NE 1/4 sec.09, T.7 N., R.18 E., Tuolumne County, CA, Hydrologic Unit 18040010, in Stanislaus National Forest, at outlet structure on upstream face of New Spicer Meadow Dam on Highland Creek, and 7.7 mi east-southeast of Big Meadows.
DRAINAGE AREA - 45.4 mi².
REVISIONS HISTORY - WDR CA-06: 2005 maximum elevation.
SURFACE-WATER RECORDS
PERIOD OF RECORD - February 1990 to current year.
GAGE - Water-stage recorder. 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 rockfill dam with a reinforced concrete face completed in December 1988. Dam is 600 ft downstream from original concrete gravity-type dam which was completed in 1929. Contents based on capacity table dated July 1989. Usable capacity, 184,298 acre-ft, between elevations 6,420.0 ft, minimum operating head, and 6,614.0 ft, crest of spillway. Released water is used for hydroelectric power and fishery maintenance. Records, including extremes, represent total contents at 2400 hours. See schematic diagram of Stanislaus River Basin available from the California Water Science Center.
EXTREMES FOR PERIOD OF RECORD - Maximum contents, 191,100 acre-ft, June 14, 15, 2005, elevation, 6,615.06 ft; minimum, 30,198 acre-ft, Mar. 5, 1993, elevation, 6,491.2 ft.