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Water-Year Summary for Site 11427960

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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
11427960 Rubicon River below Rubicon Dam, near Meeks Bay, CA
LOCATION - Lat 38°59'20", long 120°13'20" referenced to North American Datum of 1927, in NW 1/4 SW 1/4 sec.09, T.13 N., R.16 E., El Dorado County, CA, Hydrologic Unit 18020128, Eldorado National Forest, at outlet structure on diversion dam on Rubicon River, 3.3 mi upstream from Rubicon Springs, and 7.5 mi southwest of Meeks Bay.
DRAINAGE AREA - 26.8 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD - October 1991 to current year (low-flow records only). Unpublished records for water years 1964-91 available in files of the U.S. Geological Survey.
GAGE - Differential-pressure gage and orifice control in outlet pipes. Auxiliary nonrecording gage 1,300 ft downstream at different datum. Elevation of gage is 6,520 ft above NGVD of 1929, from topographic map. Prior to Sept. 4, 1991, nonrecording gage at site 1,300 ft downstream at different datum.
COOPERATION - Records were collected by Sacramento Municipal Utility District, under general supervision of the U.S. Geological Survey, in connection with Federal Energy Regulatory Commission project no. 2101.
REMARKS - Records since October 2014 not computed above 40 ft³/s. Prior to that date, records not computed above 10 ft³/s. Flow regulated by Rubicon Reservoir. Flow over the spillway bypasses this station. Most of the water is diverted through Rubicon-Rockbound Tunnel (station 11427940) to Rockbound Lake, which flows into Buck Island Lake. Water is then diverted via Buck-Loon Tunnel (station 11428300) to Loon Lake (station 11429350) for power development. See schematic diagram of Middle Fork American and Rubicon River Basins available from the California Water Science Center.