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). Completed in 1961, it is part of the Hells Canyon Project that also includes Hells Canyon Dam and Brownlee Dam, built and operated by Idaho Power Company.
|Official name||Oxbow Dam|
|Location||Hells Canyon, Adams County, Idaho / Baker County, Oregon, USA|
|Operator(s)||Idaho Power Company|
|Dam and spillways|
|Height||175 feet (53 m)|
|Total capacity||58,200 acre-feet (71,800,000 m3)|
|Catchment area||73,300 square miles (190,000 km2)|
|Surface area||1,150 acres (470 ha)|
|Installed capacity||190 megawatts (250,000 hp)|
|Annual generation||1,047 gigawatt-hours (3,770 TJ)|
The dam's powerhouse contains four generating units with a total nameplate capacity of 190 megawatts (250,000 hp).
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.
|Wikimedia Commons has media related to Oxbow Dam.|