USGS Water-Year Summary 2024

11522500 Salmon River at Somes Bar, CA

LOCATION - Lat 41°22'36", long 123°28'33" referenced to North American Datum of 1927, Siskiyou County, CA, Hydrologic Unit 18010210, unsurveyed, Humboldt Meridian, in Klamath National Forest, on left bank at Somes Bar, and 1.0 mi upstream from mouth.

DRAINAGE AREA - 751 mi².

REVISIONS HISTORY - WSP 1285: 1912, 1914, 1915 (instantaneous maximum discharge), 1946 (instantaneous maximum discharge), 1948 (instantaneous maximum discharge). WDR CA-72-1: 1970-71 (peaks above base).

SURFACE-WATER RECORDS

PERIOD OF RECORD - September 1911 to September 1915, October 1927 to current year. Monthly discharge only for some periods, published in WSP 1315-B. 

GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 482.97 ft above NGVD of 1929 and 486.33 ft above NAVD of 1988. Prior to October 1927, nonrecording gage at different datum. October 1927 to Dec. 22, 1964, water-stage recorder at site 0.5 mi upstream at datum 6.54 ft higher.

REMARKS - No storage or large diversion upstream from station. See schematic diagram of Klamath River and Trinity River Basins available from the California Water Science Center.

EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 133,000 ft³/s, Dec. 22, 1964 (result of failure of upstream debris dam), gage height, 46.6 ft, present site and datum, from floodmarks, from rating curve extended above 33,000 ft³/s; minimum daily, 60 ft³/s, Sept. 21-24, 2001.

WATER-QUALITY RECORDS

PERIOD OF RECORD -

DISCRETE WATER-QUALITY DATA:
CHEMICAL ANALYSES: Water years 1959-64.
SEDIMENT DATA: Water years 1955-56.

CONTINUOUS WATER-QUALITY DATA:
WATER TEMPERATURE: Water years 1966 to May 1979.