Brownlee Dam is a hydroelectric earth fill embankment dam in the western United States, on the Snake River on the Idaho-Oregon border, In Hells Canyon at river mile 285, it impounds the Snake River in the 58-mile (93 km)-long Brownlee Reservoir.
|Official name||Brownlee Dam|
Baker Co., Oregon / Washington Co., Idaho
|Construction began||1955 |
|Opening date||May 9, 1958 |
63 years ago
|Operator(s)||Idaho Power Company|
|Dam and spillways|
|Height||420 feet (128 m)|
|Total capacity||1,426,700 acre feet (1.7598 km3)|
|Catchment area||72,590 square miles (188,000 km2)|
|Surface area||15,000 acres (61 km2)|
|Installed capacity||585.4 MW|
|Annual generation||2,406.8 GWh|
It is part of the Hells Canyon Project that also includes Hells Canyon Dam and Oxbow Dam, built and operated by Idaho Power Company. The first and upper-most of the three dams, its contractor was Morrison-Knudsen of Boise. It started filling on May 9, 1958 , 63 years ago, flooding the community of Robinette.
The dam's powerhouse contains five generating units with a total nameplate capacity of 585.4 megawatts.
Lacking passage for migrating salmon, the three Hells Canyon Project dams blocked access by anadromous salmonids to a stretch of the Snake River drainage basin from Hells Canyon Dam up to Shoshone Falls, which naturally prevents any upstream fish passage to the upper Snake River basin.
- "Brownlee dam one-third done". Spokesman-Review. Spokane, Washington. Associated Press. December 2, 1956. p. 26.
- "Brownlee dam base readied". Spokesman-Review. Spokane, Washington. Associated Press. December 30, 1956. p. 12.
- "Idaho Power shuts gates of big dam". Spokesman-Review. Spokane, Washington. May 10, 1958. p. 2.
- "New dam goes into operation on Snake River". Florence Times. Alabama. Associated Press. May 10, 1958. p. 7.
- "Brownlee dam excavation job more than half done". Spokesman-Review. Spokane, Washington. Associated Press. April 21, 1957. p. 20.
- "Fence of voltage herds fish near Brownlee Dam". Spokane Daily Chronicle. Washington. November 29, 1957. p. 15.
- Media related to Brownlee Dam at Wikimedia Commons
- Brownlee Dam, Columbia Basin Research
- Brownlee Dam, Northwest Power and Conservation Council
- Brownlee Dam, Idaho Power
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