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Water-Year Summary for Site 11414170

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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
11414170 Drum Canal at Tunnel Outlet, near Emigrant Gap, CA
LOCATION - Lat 39°19'03", long 120°39'08" referenced to North American Datum of 1927, in SE 1/4 SW 1/4 sec.20, T.17 N., R.12 E., Nevada County, CA, Hydrologic Unit 18020125, in Tahoe National Forest, on right bank, 100 ft downstream from tunnel outlet, 1.0 mi downstream from Spaulding No. 1 Powerplant, and 1.7 mi northeast of Emigrant Gap.
SURFACE-WATER RECORDS
PERIOD OF RECORD - October 1964 to current year. Prior to October 1972, published as "Drum Canal at intake."
GAGE - Water-stage recorder. Elevation of gage is 4,880 ft above NGVD of 1929, from topographic map. Prior to Oct. 1, 1968, in powerplant 0.7 mi upstream at different datum.
COOPERATION - Records were collected by Pacific Gas and Electric Co., under general supervision of the U.S. Geological Survey, in connection with Federal Energy Regulatory Commission project no. 2310.
REMARKS - Canal diverts from Spaulding No. 1 Powerplant (station 11414154) at Lake Spaulding Dam. Most of the water from Drum Canal enters Bear River via Drum No. 1 and 2 Powerplants at Drum Afterbay. Some of the water is diverted out of Drum Forebay to Alta Powerplant. See schematic diagrams of South Yuba River Basin and Bear River Basin available from the California Water Science Center.
EXTREMES FOR PERIOD OF RECORD - Maximum daily discharge, 864 ft³/s, May 1, 1998; no flow for several days in most years.