USGS Water-Year Summary 2024

11478500 Van Duzen River near Bridgeville, CA

LOCATION - Lat 40°28'50", long 123°53'23" referenced to North American Datum of 1927, in NE 1/4 SE 1/4 sec.12, T.1 N., R.2 E., Humboldt County, CA, Hydrologic Unit 18010105, Humboldt meridian, on left bank, downstream side of bridge on State Highway 36, 0.9 mi upstream from Grizzly Creek, 5 mi west of Bridgeville, and 18 mi east of Alton (junction of State Highway 36 and U.S. Highway 101).

DRAINAGE AREA - 222 mi².

REVISIONS HISTORY - WSP 1735: Drainage area.

SURFACE-WATER RECORDS

PERIOD OF RECORD - October 1950 to current year. 

GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 358.18 ft above NGVD of 1929 and 361.29 ft above NAVD of 1988. Prior to Oct. 1, 1965, at site 2.4 mi upstream at different datum.

REMARKS - No storage or large diversion upstream from station. See schematic diagram of Eel River Basin available from the California Water Science Center.

EXTREMES OUTSIDE PERIOD OF RECORD - Peak of Jan. 21, 1943, had a discharge estimate of 22,900 ft³/s, based on method in WRI 77-21.

EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 48,700 ft³/s, Dec. 22, 1964, gage height, 24.0 ft, from floodmarks, present site and datum, from rating curve extended above 20,000 ft³/s, on basis of slope-area measurement at gage height 21.3 ft, former site and datum; minimum daily, 1.8 ft³/s, Sept. 12-16, 2014.

WATER-QUALITY RECORDS

PERIOD OF RECORD -

DISCRETE WATER-QUALITY DATA:
CHEMICAL DATA: Water years 1955, 1956 to Sept. 1958 (partial-record station), 1959-1980.
SEDIMENT DATA: Water years 1955-1967 (partial-record station), 1998 .
TURBIDITY: Water years 1964-1967 (partial-record station).

CONTINUOUS WATER-QUALITY DATA:
WATER TEMPERATURE: Water years December 1960 to 1979.