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Water-Year Summary for Site 11295270

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Available Parameters
00060 Discharge(Mean)  

Water year 2025: 2025-10-01 to 2026-09-30
 
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USGS Water-Year Summary 2025
11295270 North Fork Stanislaus River below McKays Point Dam, near Avery, CA
LOCATION - Lat 38°13'58", long 120°17'33" referenced to North American Datum of 1927, in NE 1/4 NW 1/4 sec.02, T.4 N., R.15 E., Calaveras County, CA, Hydrologic Unit 18040010, in Stanislaus National Forest, at McKays Point Dam, and 4.5 mi northeast of Avery.
DRAINAGE AREA - 166 mi².
REVISIONS HISTORY - WDR CA-91-3: 1990. WDR CA-11: 2009.
SURFACE-WATER RECORDS
PERIOD OF RECORD - August 1989 to current year.
GAGE - Acoustic-flow meter and water-stage recorder on McKays Point Reservoir (station 11295260). August 1989 to September 1992 at site 500 ft downstream at different datum. Elevation of gage is 3,280 ft above NGVD of 1929, from topographic map.
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 - Flow regulated by Union and Utica Reservoirs, Lake Alpine (stations 11293350, 11293370, and 11293460, respectively), New Spicer Meadow Reservoir and McKays Point Reservoir (stations 11293770 and 11295260) with combined capacity, 200,770 acre-ft. Collierville Tunnel diverts at McKays Point Reservoir to Utica Canal (station 11295240) and Collierville Powerplant (station 11295250). Discharge, including extremes, represents flow through dam's release valve, mini-hydro generator, and flow over spillway. See schematic diagram of Stanislaus River Basin available from the California Water Science Center.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 28,000 ft³/s, Jan. 2, 1997; minimum daily, 3.4 ft³/s, Nov. 25, 1989.