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Water-Year Summary for Site 11415500

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Available Parameters
00054 Reservoir storage(Obs.)  

Water year 2023: 2022-10-01 to 2023-09-30
 

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USGS Water-Year Summary 2023
11415500 Bowman Lake near Graniteville, CA
LOCATION - Lat 39°27'01", long 120°39'09" referenced to North American Datum of 1927, in SE 1/4 SW 1/4 sec.05, T.18 N., R.12 E., Nevada County, CA, Hydrologic Unit 18020125, on right bank, near rockfill portion of Bowman Dam on Canyon Creek, 4.6 mi east of Graniteville, and 8 mi south of Sierra City.
DRAINAGE AREA - 27.1 mi².
REVISIONS HISTORY - WSP 1931: Drainage area.
SURFACE-WATER RECORDS
PERIOD OF RECORD - December 1926 to current year.
GAGE - Water-stage recorder. Datum of gage is NGVD of 1929 (levels by Nevada Irrigation District). Prior to Oct. 8, 1964, nonrecording gage at same site and datum.
COOPERATION - Records were collected by Nevada Irrigation District, under general supervision of the U.S. Geological Survey, in connection with Federal Energy Regulatory Commission project no. 2266.
REMARKS - Lake is formed by one rockfill and one concrete-arch dam; storage began in November 1926. Contents based on capacity table dated Nov. 24, 1926. Total capacity, 68,700 acre-ft, between elevations 5,400 ft, bottom of outlet tunnel, and 5,563.6 ft, top of radial spillway gates and crest of concrete-arch dam. Flashboards are occasionally added, increasing elevation to 5,565.8 ft and capacity to 70,400 acre-ft, all of which is available for release. Lake receives water from "Middle Yuba River via Milton-Bowman Tunnel" (station 11408000), and releases it through "Bowman-Spaulding Canal" (station 11416000) which conveys it to reservoirs of Pacific Gas and Electric Company. Water is eventually used for irrigation by Nevada Irrigation District. Records, including extremes, represent total contents at 2400 hours. See schematic diagram of North and Middle Yuba River Basins available from the California Water Science Center.
EXTREMES FOR PERIOD OF RECORD - Maximum contents, 71,000 acre-ft, May 30, 1965, elevation, 5,566.5 ft; lake completely drained for inspection and repair Nov. 25 to Dec. 9, 1949, Oct. 1-20, 1966, Oct. 4-29, 1972, and Sept. 21-30, 1981.