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Water-Year Summary for Site 13201500

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  • Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
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Available Parameters
00054 Reservoir storage(Obs.)  

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

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USGS Water-Year Summary 2022
LOCATION - Lat 43°31'32", long 116°03'19" referenced to North American Datum of 1983, in SW 1/4 NW 1/4 sec.12, T.2 N., R.3 E., Ada County, ID, Hydrologic Unit 17050112, Lucky Peak quad., at outlet control tower at Lucky Peak Dam on Boise River, 2 mi upstream from diversion dam for New York Canal, 7 mi downstream from Mores Creek, 9 mi southeast of Boise, and at mile 63.8.
DRAINAGE AREA - 2,686 mi².
REVISIONS HISTORY - WDR-US-2010: Drainage area.
PERIOD OF RECORD - October 1954 to current year.
GAGE - Water-stage recorder. Datum of gage is referenced to sea level as provided by U.S. Army Corps of Engineers. Prior to May 13, 1955, nonrecording gage at same site and datum.
REMARKS - Reservoir is formed by earthfill dam. Storage began Oct. 16, 1954. Dam completed in February 1955. Capacity, 307,040 acre-ft between elevations 2,827.0 ft, sill of outlet gates, and 3,060.0 ft, spillway crest. Minimum proposed operating level, 2,905.0 ft, 28,770 acre-ft, but all storage can be released. Water is stored for flood control, irrigation of lands in Boise Valley, and hydroelectric power.
EXTREMES FOR PERIOD OF RECORD - Maximum contents, 305,130 acre-ft June 25, 1955, elevation, 3,059.32 ft; minimum since near-full capacity was attained on June 25, 1955, 28,630 acre-ft Dec. 21, 1961, elevation, 2,904.83 ft.