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Water-Year Summary for Site 11414210

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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
11414210 South Yuba River Controlled Release at Lake Spaulding, near Emigrant Gap, CA
LOCATION - Lat 39°19'28", long 120°38'42" referenced to North American Datum of 1927, in NE 1/4 SE 1/4 sec.20, T.17 N., R.12 E., Nevada County, CA, Hydrologic Unit 18020125, on left bank, 200 ft downstream from Spaulding No. 2 Powerplant, 0.2 mi downstream from Spaulding Dam, and 2.3 mi northeast of Emigrant Gap.
DRAINAGE AREA - 118 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD - October 1985 to September 2003, October 2003 to current year (low-flow records only). Unpublished records for water years 1965-85 in files of the U.S. Geological Survey. Prior to October 2000, published as "South Yuba River below Spaulding No. 2 Powerplant, near Emigrant Gap."
GAGE - Water-stage recorder, V-notch sharp-crested weir, and steel-lipped rectangular weir. Elevation of gage is 4,670 ft above NGVD of 1929, from topographic map. Prior to June 1988, at same site, 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 - Records not computed above 3.6 ft³/s. There was no mean daily flow below 3.6 ft³/s for the entire 2015, 2018, 2021 and 2023 water years. Flow regulated by Lake Spaulding (station 11414140) 0.2 mi upstream. Water is released at the intake to South Yuba Canal (station 11414200) 100 ft upstream. Flow over Lake Spaulding spillway bypasses this station. See schematic diagrams of South Yuba River Basin and Bear River Basin available from the California Water Science Center.