USGS Water-Year Summary 2024

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.

SURFACE-WATER RECORDS

PERIOD OF RECORD - October 1967 to current year.

GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 1411.64 ft above NAVD of 1988.

REMARKS - No regulation; small diversion upstream from station for domestic use. See schematic diagram of Eel River Basin available from the California Water Science Center.

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.

CLIMATOLOGICAL RECORDS

PERIOD OF RECORD - Water years 1989-96.

WATER-QUALITY RECORDS

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.