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- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
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USGS Water-Year Summary 2024
13042500 HENRYS FORK NEAR ISLAND PARK, ID
LOCATION - Lat 44°25'00", long 111°23'41" referenced to North American Datum of 1983, in sec.28, T.13 N., R.43 E., Fremont County, ID, Hydrologic Unit 17040202, Island Park Dam quad, Targhee National Forest, on left bank 0.2 mi downstream from Island Park Dam, 0.2 mi upstream from Buffalo River, 1 mi southwest of Island Park Post Office, and at mile 91.5.
DRAINAGE AREA - 501 mi².
REVISIONS HISTORY - WSP 1217: Drainage area. WDR-US-2010: Drainage area.
SURFACE-WATER RECORDS
PERIOD OF RECORD - January 1933 to current.
GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 6,227.51 feet above NAVD 1988 (USGS). Prior to May 15, 1935, non-recording gage at site about 0.8 mi upstream at different datum. May 15 to Nov. 30, 1935, water-stage recorder at site 1,000 ft downstream at different datum.
REMARKS - Flow regulated by Henrys Lake (see station 13039000) and Island Park Reservoir. Diversions above station for irrigation of about 15,500 acres (1966 determination), a considerable part of which consists of partly sub-irrigated meadows.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 3,030 ft³/s May 23, 1984, gage height, 6.06 ft; minimum daily, 1.0 ft³/s Nov. 16 to Dec. 7, 1938.
