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Water-Year Summary for Site 11414090

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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
11414090 Fordyce Lake near Cisco, CA
LOCATION - Lat 39°22'44", long 120°29'40" referenced to North American Datum of 1927, in NE 1/4 SE 1/4 sec.34, T.18 N., R.12 E., Nevada County, CA, Hydrologic Unit 18020125, near left abutment of Fordyce Dam on Fordyce Creek, and 5.3 mi northeast of Cisco.
DRAINAGE AREA - 31.7 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD - October 1977 to current year. Periodic gage heights only for October 1965 to September 1976 and daily contents for water year 1977 are in the files of the U.S. Geological Survey.
GAGE - Water-stage recorder. Datum of gage is 6,290.5 ft above NGVD of 1929 (levels by Pacific Gas and Electric Company). Prior to Nov. 29, 1976, nonrecording gage on upstream side of dam at same datum.
COOPERATION - Records were collected by Pacific Gas and Electric Company, under general supervision of the U.S. Geological Survey, in connection with Federal Energy Regulatory Commission project no. 2310.
REMARKS - Lake is formed by a rock-fill dam; storage began in 1926. In 1980 the capacity of Fordyce Lake was increased by the addition of 3 ft of flashboards. Contents based on capacity table dated 2009. Capacity, 49,344 acre-ft, between gage heights 0.85 ft, bottom of outlet valve, and 114.6 ft, top of flashboards in spillway. Released water flows down Fordyce Creek (station 11414100) to Lake Spaulding (station 11414140) for use in a power and irrigation system. Figures given, including extremes, represent contents at 2400 hours. See schematic diagram of South Yuba River Basin available from the California Water Science Center.
EXTREMES FOR PERIOD OF RECORD - Maximum contents, 50,100 acre-ft, June 4, 2000, June 7, 2002, maximum gage height, 114.88 ft, June 4, 2000; minimum, 250 acre-ft, Oct. 31 to Nov. 7, 1979.