Boise River Diversion Dam

Boise River Diversion Dam
Location in the United States
Location in Idaho
CountryUnited States
LocationAda County, Idaho
Coordinates43°32′15″N 116°05′36″W / 43.53750°N 116.09333°W / 43.53750; -116.09333
StatusOperational
Construction began1906
Opening date1909 (1909)
Owner(s)U.S. Bureau of Reclamation
Dam and spillways
ImpoundsBoise River
Height68 ft (21 m)
Length500 ft (152 m)
Elevation at crest2,829 ft (862 m)
Width (crest)12 ft (3.7 m)
Width (base)100 ft (30 m)
Spillway capacity37,700 cu ft/s (1,070 m3/s)
Reservoir
Creates1,200 acre⋅ft (1,480,200 m3)
Power Station
Commission date1912 (1912)
Turbines3 x Francis turbines
Installed capacity3.45 MW

The Boise River Diversion Dam is a diversion dam in the western United States, on the Boise River in southwestern Idaho. Seven miles (11 km) southeast and upstream of Boise in Ada County, it was completed 116 years ago in 1909 and is operated by the U.S. Bureau of Reclamation.

The diverted water fills the concrete New York Canal, the primary irrigation channel for Ada and Canyon counties in the Treasure Valley.

Several miles upstream of the Diversion Dam is Lucky Peak Dam. Completed in 1955, it was built and is operated by the U.S. Army Corps of Engineers.