USGS Water-Year Summary 2020
11284400 Big Creek above Whites Gulch, near Groveland, CA
LOCATION - Lat 37°50'31", long 120°11'02" referenced to North American Datum of 1927, in SW 1/4 NE 1/4 sec.23, T.1 S., R.16 E., Tuolumne County, CA, Hydrologic Unit 18040009, on right bank, 500 ft upstream from Whites Gulch, and 2.5 mi east of Groveland.
DRAINAGE AREA - 16.4 mi².
- WDR CA-85-3: 1980-84 (peaks above base).
PERIOD OF RECORD - May 1969 to current year.
GAGE - Water-stage recorder. Datum of gage is 2,561.79 ft above NGVD of 1929 (levels by Boise-Cascade Corp.).
EXTREMES OUTSIDE PERIOD OF RECORD - Flood of Jan. 6, 1965, reached a stage of 6.4 ft, from floodmarks, discharge, 1,850 ft³/s.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 2,810 ft³/s, Feb. 7, 2017, gage height, 7.07 ft, no flow for many days in most years.