USGS Water-Year Summary 2020
11180960 Cull Creek above Cull Creek Reservoir, near Castro Valley, CA
LOCATION - Lat 37°43'04", long 122°03'12" referenced to North American Datum of 1927, Alameda County, CA, Hydrologic Unit 18050004, in San Lorenzo Grant, on left bank, 0.9 mi upstream from Cull Creek Dam, and 1.1 mi northeast of Castro Valley Post Office.
DRAINAGE AREA - 5.79 mi².
- WDR CA-80-2: 1979 (peaks above base).
PERIOD OF RECORD - October 1978 to current year.
PRECIPITATION DATA: Water year 1982.
WATER TEMPERATURE: Water years 1979-2003.
SEDIMENT DATA: Water years 1979-2003.
GAGE - Water-stage recorder and crest-stage gage. Elevation of gage is 450 ft above NGVD of 1929, from topographic map.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 1,690 ft³/s, Jan. 5, 1982, gage height, 8.71 ft; no flow for many days each year.