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Water-Year Summary for Site 10260780

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Available Parameters
00060 Discharge(Mean)  

Water year 2023: 2022-10-01 to 2023-09-30
 
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USGS Water-Year Summary 2023
10260780 East Branch California Aqueduct at Mojave Siphon Powerplant, near Hesperia, CA
LOCATION - Lat 34°18'25", long 117°19'24" referenced to North American Datum of 1927, in SE 1/4 NW 1/4 sec.32, T.3 N., R.4 W., San Bernardino County, CA, Hydrologic Unit 18090208, in San Bernardino National Forest, in powerplant and bypass channel, 0.2 mi north of Silverwood Lake, and 8.3 mi south of Hesperia.
REVISIONS HISTORY - WDR CA-00-1: 1997-99. WDR US-2013: 2011, 2012.
SURFACE-WATER RECORDS
PERIOD OF RECORD - October 1995 to September 2004, October 2005 to September 2014 (discontinued). Unpublished records for water years 1975-94 available in files of the California Department of Water Resources. Published as "Mojave Siphon Powerplant" prior to October 1999.
GAGE - Acoustic-velocity meters on intake pipes. Water stage recorder in stilling well on bypass flume. Elevation of powerplant is 3,182 ft above NGVD of 1929. Elevation of bypass gage is 3,372.5 ft above NGVD of 1929, from California Department of Water Resources.
COOPERATION - Records collected by California Department of Water Resources, under general supervision of the U.S. Geological Survey, in connection with Federal Energy Regulatory Commission project no. 2426.
REMARKS - Flow at this site represents East Branch California Aqueduct water to Silverwood Lake. Flow at this site has two components which are combined for publication: flow through the powerplant, and bypass flow through the flume. See schematic diagram of the Mojave River Basin available from the California Water Science Center.
EXTREMES FOR PERIOD OF RECORD - Maximum daily discharge, 2,230 ft³/s, May 20, 2011; no flow for many days in some years.