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Water-Year Summary for Site 11109396

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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)  

Water year 2018: 2017-10-01 to 2018-09-30

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USGS Water-Year Summary 2018
11109396 California Aqueduct at North Portal Tehachapi Tunnel, near Gorman, CA
LOCATION - Lat 34°55'46", long 118°48'17" referenced to North American Datum of 1927, Kern County, CA, Hydrologic Unit 18030003, unsurveyed, in Los Alamos Y Caliente Grant, at entrance to Tehachapi Tunnel, 1.5 mi southeast of A.D. Edmonston Pumping Plant, and 10 mi north of Gorman.
PERIOD OF RECORD - October 1995 to September 2015 (discontinued). Prior to October 1995 in files of California Department of Water Resources. Published as "North Portal Tehachapi Tunnel near Gorman" prior to October 2000.
GAGE - Acoustic-velocity meter. Elevation of gage is 3,220 ft above NGVD of 1929, from topographic map.
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 2426.
REMARKS - Records represent flow pumped from the California Aqueduct by the A.D. Edmonston Pumping Plant to southern California. Downstream, the flow splits as it leaves Tehachapi Afterbay. The East Branch California Aqueduct flows through Alamo Powerplant (station 10260776), and the West Branch California Aqueduct flows through William Warne Powerplant (station 11109398). See schematic diagram of Santa Clara River Basin available from the California Water Science Center.
EXTREMES FOR PERIOD OF RECORD - Maximum daily discharge, 4,230 ft³/s, several days during water year 2007; no flow at times in some years.