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Water-Year Summary for Site 11443450

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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
11443450 Slab Creek Reservoir near Camino, CA
LOCATION - Lat 38°46'21", long 120°41'48" referenced to North American Datum of 1927, in SW 1/4 NE 1/4 sec.25, T.11 N., R.11 E., El Dorado County, CA, Hydrologic Unit 18020129, Eldorado National Forest, on left bank, 100 ft upstream from dam on South Fork American River, 1,600 ft upstream from Iowa Canyon, and 2.7 mi northwest of Camino.
DRAINAGE AREA - 493 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD - May 1987 to current year. Unpublished records for water years 1969-86 available in files of the U.S. Geological Survey.
GAGE - Water-stage recorder. Datum of gage is NGVD of 1929 (levels by Sacramento Municipal Utility District). Prior to May 26, 1987, nonrecording gage at same site and datum. September 1980 to October 1993, supplementary water-stage recorder at left abutment of dam operated by U.S. Geological Survey during periods of spill.
COOPERATION - Records were collected by Sacramento Municipal Utility District, under general supervision of the U.S. Geological Survey, in connection with Federal Energy Regulatory Commission project no. 2101.
REMARKS - Reservoir is formed by concrete-arch dam completed in 1967. Storage began in October 1967. Contents based on capacity table dated May 2000. Usable capacity, 13,080 acre-ft between elevations 1,670 ft, invert of tunnel, and 1,850 ft, crest of spillway. Reservoir receives water from South Fork American River and Silver Creek via El Dorado and Camino Powerplants (station 11441895) 10 mi upstream. Nearly the entire flow is diverted at this reservoir to White Rock Powerplant (station 11443460). Contents since October 1, 2020 based on Capacity Table 5, from a bathymetric study done in 2018 by SMUD. See South Fork American River near Camino (station 11443500) for additional information on diversions and releases from Slab Creek Reservoir. Records, including extremes, represent usable contents at 2400 hours. See schematic diagram of South Fork American River Basin available from the California Water Science Center. 
EXTREMES FOR PERIOD OF RECORD - Maximum contents, 18,637 acre-ft, Jan. 1, 1997, elevation, 1,859.70 ft; minimum, 3,917 acre-ft, Oct. 27, 1991, elevation unknown.