USGS Water-Year Summary 2021
13135520 NORTH FORK BIG WOOD RIVER NEAR SAWTOOTH NRA HEADQUARTERS NEAR KETCHUM, ID
LOCATION - Lat 43°47'10", long 114°25'09" referenced to North American Datum of 1983, in sec.03, T.5 N., R.17 E., Blaine County, ID, Hydrologic Unit 17040219, Amber Lakes quad., on left bank approximately 250 ft. upstream of bridge.
DRAINAGE AREA - 40 mi².
PERIOD OF RECORD - April 2011 to current year.
GAGE - Water-stage recorder. Elevation of gage datum is arbitrary.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 1, 270 ft³/s June 8, 2017, gage height, 7.48 ft; minimum daily, 7.63 ft³/s Jan. 31, 2019.
PERIOD OF RECORD - Continuous water temperature data were collected from May 14 to Sept. 24, 2014.