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Water-Year Summary for Site 11453900

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  • Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
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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
11453900 Lake Berryessa near Winters, CA
LOCATION - Lat 38°30'48", long 122°06'13" referenced to North American Datum of 1927, in SE 1/4 NW 1/4 sec.29, T.8 N., R.2 W., Napa County, CA, Hydrologic Unit 18020162, near center of Monticello Dam on Putah Creek, and 7.4 mi west of Winters.
DRAINAGE AREA - 566 mi².
REVISIONS HISTORY - WSP 1735: 1958-60. WSP 1931: Drainage area.
SURFACE-WATER RECORDS
PERIOD OF RECORD - January 1957 to current year.
GAGE - Water-stage recorder. Datum of gage is NGVD of 1929 (levels by U.S. Bureau of Reclamation).
COOPERATION - Records provided by U.S. Bureau of Reclamation. Total evaporation provided by U.S. Bureau of Reclamation, not reviewed by U.S. Geological Survey.
REMARKS - Records for 2014 water year did not meet U.S. Geological Survey requirements and were not published. Reservoir is formed by concrete arch-gravity dam completed November 1956. Usable capacity, 1,592,000 acre-ft, between elevations 253.25 ft, invert of outlet valves, and 440 ft, crest of glory-hole spillway. Dead storage, 10,340 acre-ft. Water is released down Putah Creek and is diverted into Putah South Canal (station 11454210) for irrigation of about 46,000 acres in the lower Sacramento Valley. Total diverted during current year was 217,100 acre-ft. Releases for irrigation began in May 1959. Records, including extremes, show total contents at 2400 hours. See schematic diagram of lower Sacramento River Basin available from the California Water Science Center.
EXTREMES FOR PERIOD OF RECORD - Maximum contents, 1,733,500 acre-ft, Mar. 2, 1983, elevation, 446.67 ft; minimum since irrigation pool first filled, 422,130 acre-ft, Dec. 1, 1992, elevation, 361.73 ft.