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Water-Year Summary for Site 13250000

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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.
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Available Parameters
00060 Discharge(Mean)  

Water year 2022: 2022-10-01 to 2023-09-30

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USGS Water-Year Summary 2022
LOCATION - Lat 43°53'46", long 116°37'40" referenced to North American Datum of 1983, in SE 1/4 SW 1/4 SW 1/4 sec.31, T.7 N., R.2 W., Gem County, ID, Hydrologic Unit 17050122, Letha quad., on left bank just upstream from county road bridge, 1.1 mi east of Letha, and at mile 25.
DRAINAGE AREA - 2,760 mi².
PERIOD OF RECORD - October 1978 to September 1983, October 1983 to September 1986 (irrigation season only), May 1994 to current year. July to November 1952, March to November 1953, at site 0.6 mi upstream not equivalent due to inflow between sites.
GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 2,276.16 ft above NAVD88.
REMARKS - Flow regulated by Deadwood Reservoir, Cascade Reservoir, and to some extent by Black Canyon Dam about 13.5 mi upstream. Diversions above station for irrigation of about 190,000 acres, of which 50,000 acres are located below station. About 53,000 acres are in adjacent basins (1966 determination).
EXTREMES FOR PERIOD OF RECORD - Maximum daily discharge, 27,000 ft³/s Jan. 2, 1997; minimum, 51 ft³/s June 11, 1994, gage height, 6.97 ft.