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Brownlee Dam is a Hydroelectricity earth fill embankment dam in the western United States, on the Snake River along the Idaho-Oregon border (Washington County, Idaho in and Baker County in Oregon). In Hells Canyon at river mile 285, it impounds the Snake River in the Brownlee Reservoir.
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.
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