Oxbow Dam

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Oxbow Dam
Oxbow Dam
Official name Oxbow Dam
Impounds Snake River
Creates Oxbow Reservoir
Locale Hells Canyon
Maintained by Idaho Power Company
Height 175 ft (53 m)
Opening date 1961
Reservoir information
Capacity 58,200 acre-feet (72,000,000 m³)
Catchment area 73,300 square miles (189,800 km²)
Surface area 1,150 acres (4.65 km²)
Geographical Data
Coordinates 44°58′06″N 116°50′30″W / 44.9683, -116.8417

Oxbow Dam is a hydroelectric run-of-the-river rockfill dam on the Snake River on the Idaho-Oregon border, in Hells Canyon (river mile 273). It is part of the Hells Canyon Project that also includes Hells Canyon Dam and Brownlee Dam, built and operated by Idaho Power Company.

The dam's powerhouse contains four generating units with a total nameplate capacity of 190 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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