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Water-Year Summary for Site 11433080

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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
11433080 North Fork Long Canyon Creek Diversion Tunnel near Volcanoville, CA
LOCATION - Lat 39°02'57", long 120°28'56" referenced to North American Datum of 1927, in SW 1/4 NW 1/4 sec.24, T.14 N., R.13 E., Placer County, CA, Hydrologic Unit 18020128, in Eldorado National Forest, on left bank at diversion dam, 0.4 mi downstream from unnamed tributary, 3.2 mi upstream from confluence of North and South Forks Long Canyon Creek, and 16.9 mi east of Volcanoville.
SURFACE-WATER RECORDS
PERIOD OF RECORD - October 1965 to current year.
GAGE - Water-stage recorder and Parshall flume. Elevation of gage is 4,700 ft above NGVD of 1929, from topographic map.
COOPERATION - Records provided by Placer County Water Agency, under general supervision of the U.S. Geological Survey, in connection with Federal Energy Regulatory Commission project no. 2079.
REMARKS - Tunnel completed in September 1965 and diversions began in February 1966. Flow is diverted from North Fork Long Canyon Creek to a tunnel from Hell Hole Reservoir to Middle Fork Powerplant (stations 11428700 and 11428600) on the Middle Fork American River. See schematic diagram of Middle Fork American and Rubicon River Basins available from the California Water Science Center. No diversion during the 2015, 2018, and 2023 water years.
EXTREMES FOR PERIOD OF RECORD - Maximum daily discharge, 100 ft³/s, Jan. 15, 1998; no flow for part of each year.