USGS Water-Year Summary 2023
13316500 LITTLE SALMON RIVER AT RIGGINS, ID
LOCATION - Lat 45°24'47", long 116°19'31" referenced to North American Datum of 1983, in SE 1/4 SW 1/4 sec.15, T.24 N., R.1 E., Idaho County, ID, Hydrologic Unit 17060210, Riggins quad., on right bank 14 ft upstream from road bridge, at mile 0.5, and 0.8 mi southwest of Riggins.
DRAINAGE AREA - 576 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD - February 1951 to February 1955, September 1956 to current year.
GAGE - Water-stage recorder. Elevation of gage datum is arbitrary.
EXTREMES OUTSIDE PERIOD OF RECORD - Flood about June 1, 1948, reached a discharge of 9,200 ft³/s, determined by slope-area measurement.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 12,600 ft³/s June 17, 1974, gage height, 11.05 ft, from floodmark; maximum gage height, 12.39 ft, June 13, 1953, site and datum then in use; minimum, 54 ft³/s Dec. 21, 1990, gage height, 2.71 ft.