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Water-Year Summary for Site 11108092

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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
11108092 Elderberry Forebay near Castaic, CA
LOCATION - Lat 34°33'46", long 118°37'58" referenced to North American Datum of 1927, in SW 1/4 SE 1/4 sec.36, T.6 N., R.17 W., Los Angeles County, CA, Hydrologic Unit 18070102, in Angeles National Forest, in outlet tower in Elderberry Forebay, and 5 mi north of Castaic.
DRAINAGE AREA - 76.2 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD - October 1995 to current year. Prior to October 1995 in files of California Department of Water Resources.
GAGE - Water-stage recorder. Elevation of gage is NGVD of 1929 (levels by Los Angeles Department of Water and Power).
COOPERATION - Records were provided by California Department of Water Resources, Southern Division, Castaic Operations Office, under the general supervision of the U.S. Geological Survey, in connection with Federal Energy Regulatory Commission project no. 2426. Contents not rounded to U.S. Geological Survey standards.
REMARKS - Forebay is formed by an earthen dam on Castaic Creek completed in 1974. Capacity, 32,476 acre-ft, at spillway crest on dam, at elevation 1,540 ft. Storage at normal minimum pool, 12,228 acre-ft, at elevation 1,490 ft. Forebay receives water from Pyramid Lake (station 11109520) via Castaic Powerplant. Water is pumped at times to Pyramid Lake during off-peak periods to be re-released through the powerplant. Records represent total contents. See schematic diagram of Santa Clara River Basin available from the California Water Science Center.
EXTREMES FOR PERIOD OF RECORD - (at 2400 hours) Maximum contents, 31,537 acre-ft, Oct. 5, 2000, elevation, 1,538.09 ft; minimum, no contents many days in November, December 2006, and January 2007.