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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
13056500 HENRYS FORK NEAR REXBURG, ID
LOCATION - Lat 43°49'33", long 111°54'18" referenced to North American Datum of 1983, in sec.30, T.6 N., R.39 E., Madison County, ID, Hydrologic Unit 17040203, Menan Buttes quad., on right bank 200 ft. downstream from highway bridge, 6 mi. west of Rexburg, and at mile 9.2.
DRAINAGE AREA - 2,920 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD - April 1909 to current year. Monthly discharge only for some periods, published in WSP 1317. Prior to 1911, published as North Fork of Snake River near Rexburg.
GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 4,809.56 fet above NAVD 1988 (USGS). Apr. 13, 1909 to Sept. 28, 1912, non recording gage at datum 0.67 ft. higher. Sept. 29, 1912 to Apr. 4, 1913, non-recording gage at present datum.
REMARKS - Flow regulated by operation of power plant near Ashton, Henrys Lake (see station 13039000), Island Park Reservoir, and Grassy Lake. Diversions above station for irrigation of about 204,000 acres above and about 5,000 acres below station, of which about 21,000 acres are irrigated by withdrawals from ground water (1966 determination). Considerable water leaks above station into the Snake River Plain aquifer. Station is downstream from all tributaries except inflow from ground water and irrigation.
EXTREMES FOR PERIOD OF RECORD - Maximum daily discharge, 79,000 ft³/s June 5, 1976; maximum gage height, 22.36 ft, June 5, 1976, result of Teton Dam failure.
Maximum discharge excluding 1976, 16,400 ft³/s May 17, 1984, gage height, 12.05 ft, from high-water mark in gage well; minimum, 183 ft³/s Mar. 24-28, 1934, gage height, 1.45 ft.
WATER-QUALITY RECORDS
PERIOD OF RECORD - Water years 1965-82. Continuous water temperature data were collected from water years, July to September 1998, April to September 2000, April to November 2002, July to September 2003, October 2004 to December 2016 (discontinued).
EXTREMES FOR PERIOD OF DAILY RECORD - WATER TEMPERATURE: Maximum, 26.4 °C July 02, 2015; minimum, 0.0 °C on many days during winter months many years.
