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Water-Year Summary for Site 13094000

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  • Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
  • For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
  • For water years 2006 through 2013, choose a water year and an Annual Water Data Report will be provided.
  • For water years 2005 and earlier, Annual Water Data Reports may be available in digital format.
  • Not all sites have reports available for every water year.
Available Parameters
00010 Temperature, water(Max.,Min.,Mean)  
00060 Discharge(Mean)  

Water year 2021: 2020-10-01 to 2021-09-30

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USGS Water-Year Summary 2021
LOCATION - Lat 42°39'57", long 114°42'44" referenced to North American Datum of 1983, in NW 1/4 NW 1/4 sec.09, T.9 S., R.15 E., Twin Falls County, ID, Hydrologic Unit 17040212, Niagara Springs quad., on left bank 2 mi downstream from Niagara Springs, 3.8 mi upstream from outlet of Clear Lakes, 6 mi northeast of Buhl, and at mile 596.8.
DRAINAGE AREA - 22,990 mi².
PERIOD OF RECORD - December 1946 to current year.
GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 2,951.9 ft above NGVD of 1929 (stadia levels). Dec. 12, 1946 to July 13, 1965, at datum 1.00 ft higher. Prior to Jan. 17, 1947, nonrecording gage 40 ft upstream.
REMARKS - Flow regulated by American Falls Reservoir 116.8 mi upstream. Diurnal fluctuation caused by hydroelectric plants upstream. No diversions except by small ranch ditches between this station and station at Milner, where at times practically entire flow is diverted during irrigation seasons. Diversions above station for irrigation of about 2,030,000 acres, of which about 542,000 acres are irrigated by withdrawals from ground water; about 230,000 acres are irrigated below station. In addition, about 26,000 acres are irrigated above station by diversions from Salmon Falls Creek. Considerable water leaks into the Snake River Plain aquifer upstream, some of which returns above the station.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 37,100 ft³/s June 22, 1997, gage height, 14.65 ft; minimum, 1,180 ft³/s Apr. 5, 2014, gage height, 0.44 ft.
PERIOD OF RECORD - Continuous water temperature data were collected from March 2016 to September 2018 (discontinued).
REMARKS - Numerical uncertainty is not currently computed for time-series water-quality records but qualitative ratings are provided based on professional judgment.
  • Water Year 2016: Records good.
  • Water Year 2017: The practice of using qualitative ratings to describe data accuracy was discontinued in water year 2017.