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Water-Year Summary for Site 11435900

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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
11435900 Silver Lake near Kirkwood, CA
LOCATION - Lat 38°40'07", long 120°07'14" referenced to North American Datum of 1927, in NW 1/4 SE 1/4 sec.32, T.10 N., R.17 E., Amador County, CA, Hydrologic Unit 18020129, Eldorado National Forest, on outlet structure, 3.5 mi southwest of Kirkwood.
DRAINAGE AREA - 15.1 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD - October 1985 to current year. Unpublished records for water years 1981-85 available in files of U.S. Geological Survey.
GAGE - Water-stage recorder. Datum of gage is 7,184.3 ft above NGVD of 1929 (levels by Pacific Gas and Electric Company). October 1985 to Mar. 5, 1991, nonrecording gage at same site and datum.
COOPERATION - Records were collected by El Dorado Irrigation District, under general supervision of the U.S. Geological Survey, in connection with Federal Energy Regulatory Commission project no. 184.
REMARKS - Lake is formed by earth-fill and rock masonry dam initially constructed in 1876 and enlarged in 1929. Contents based on capacity table dated Sept. 30, 1999. Capacity, 8,590 acre-ft, between gage heights 0.0 ft, invert of outlet, and 22.7 ft, top of radial gates and flashboards. Released water is used for power development on South Fork American River. See schematic diagram of South Fork American River Basin available from the California Water Science Center.
EXTREMES FOR PERIOD OF RECORD - Maximum contents, 9,000 acre-ft, May 23, 2015, gage height, 23.41 ft; minimum, 0 acre-ft, Feb. 13, 15, 20, 22, 27, 1991, gage height, 0 ft.