USGS Water-Year Summary 2021
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.
- WSP 1735: 1958-60. WSP 1931: Drainage area.
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.
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.