USGS Water-Year Summary 2021
11475560 Elder Creek near Branscomb, CA
LOCATION - Lat 39°43'47", long 123°38'34" referenced to North American Datum of 1927, in NW 1/4 NE 1/4 sec.29, T.22 N., R.16 W., Mendocino County, CA, Hydrologic Unit 18010106, on right bank, 0.2 mi upstream from mouth, and 5.3 mi north of Branscomb.
DRAINAGE AREA - 6.50 mi².
PERIOD OF RECORD - October 1967 to current year.
GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 1,391.08 ft above NGVD of 1929.
EXTREMES OUTSIDE PERIOD OF RECORD - Flood of Dec. 22, 1964, reached a stage of 11.41 ft, from floodmarks, discharge, 3,660 ft³/s, by slope-area measurement of peak flow.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 2,480 ft³/s, Dec. 30, 1996, gage height, 9.88 ft, from rating curve extended above 700 ft³/s, on basis of slope-area measurements at gage heights 9.40 and 11.41 ft; minimum daily, 0.27 ft³/s, Sept. 10-15, 1981.
PERIOD OF RECORD - Water years 1989-96.
PERIOD OF RECORD
DISCRETE WATER-QUALITY DATA:
CHEMICAL DATA: Water years 1968 to March 1996.
SEDIMENT DATA: Water years 1969 to March 1996. .
CONTINUOUS WATER-QUALITY DATA:
WATER TEMPERATURE: Water years 1968-79, April 2012 to current year.
SUSPENDED-SEDIMENT DISCHARGE: Water years October 1973 to September 1975.