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Water-Year Summary for Site 11295260

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  • Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
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Available Parameters
00054 Reservoir storage(Obs.)  

Water year 2020: 2019-10-01 to 2020-09-30

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USGS Water-Year Summary 2020
11295260 McKays Point Reservoir near Avery, CA
LOCATION - Lat 38°14'01", long 120°17'30" 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, on right bank at outlet structure near upstream face of McKays Point Dam on North Fork Stanislaus River, and 4.6 mi northeast of Avery.
DRAINAGE AREA - 166 mi².
REVISIONS HISTORY - WDR CA-92-3: 1992 (instantaneous maximum discharge).
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 concrete arch-type dam completed in July 1989. Contents based on capacity table dated September 1991. Usable capacity, 1,928 acre-ft, between elevations 3,280.0 ft, minimum operating head, and 3,370.0 ft, crest of spillway. Water is diverted from reservoir through tunnel to Utica Canal (station 11295240) and Collierville Powerplant (station 11295250, near the confluence of the middle and north forks of the Stanislaus River). Released water is used for 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, 2,572 acre-ft, Jan. 1, 1997, elevation, 3,379.9 ft; minimum, 195 acre-ft, Oct. 7, 2006, elevation, 3,289.98 ft.