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Water-Year Summary for Site 11109398

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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
00060 Discharge(Mean) [Generation + Bypass]  
00060 Discharge(Mean) [Generation]  

Water year 2023: 2022-10-01 to 2023-09-30
 

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USGS Water-Year Summary 2023
11109398 West Branch California Aqueduct at William Warne Powerplant, near Gorman, CA
LOCATION - Lat 34°41'07", long 118°47'16" referenced to North American Datum of 1927, in SW 1/4 NE 1/4 sec.21, T.7 N., R.18 W., Los Angeles County, CA, Hydrologic Unit 18070102, in Los Padres National Forest, in powerplant at upper end of Pyramid Lake, on Canada de Los Alamos arm, and 8.5 mi southeast of Gorman.
SURFACE-WATER RECORDS
PERIOD OF RECORD - October 1995 to September 2010, generation discharge only. October 2010 to current year, combined generation and bypass flows. Prior to October 1995 in files of California Department of Water Resources. Published as "William Warne Powerplant" prior to October 1999.
GAGE - Acoustic-velocity meters in both penstocks. Datum of gage is 2,582 ft above NGVD of 1929.
COOPERATION - Records were computed by California Department of Water Resources, under the general supervision of the U.S. Geological Survey, in connection with Federal Energy Regulatory Commission project no. 2426.
REMARKS - Upstream the flow splits as it leaves the Tehachapi Tunnel. Flow at this site represents West Branch California Aqueduct water flowing southwest to Pyramid Lake (station 11109520). The East Branch California Aqueduct flows through Alamo Powerplant (station 10260776). See schematic diagram of Santa Clara River Basin available from the California Water Science Center.
EXTREMES FOR PERIOD OF RECORD - Maximum daily discharge, 3,140 ft³/s, Mar. 28, 2018; no flow at times in some years.