Hells Canyon Dam, Hydroelectric station and gravity dam at Snake River, Oregon and Idaho
The concrete dam spans 277 meters across the Snake River, containing three generating units with a total capacity of 391 megawatts of electricity.
The Idaho Power Company completed the construction of Hells Canyon Dam in 1967, marking the final phase of a three-dam project that began with Brownlee Dam.
The dam's construction modified the natural flow of Snake River, affecting the traditional salmon fishing practices of Native American tribes in the region.
The dam creates a reservoir with a capacity of 188,000 acre-feet, generating approximately 2,051 gigawatt-hours of electricity annually for regional power distribution.
Located within North America's deepest river gorge, the dam operates without fish passages, preventing salmon migration to upstream regions of the Snake River basin.
Location: Oregon
Location: Idaho
Inception: 1967
Length: 277 m
GPS coordinates: 45.24317,-116.69927
Latest update: May 24, 2025 12:16
Hells Canyon
15.1 km
Wallowa Mountains
47.1 km
Hells Canyon National Recreation Area
42.7 km
Hells Canyon Wilderness
37.5 km
Sacajawea Peak
46.6 km
Zumwalt Prairie
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Wallowa Lake Tramway
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Wallowa Lake State Park
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Eagle Cap
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Mount Howard
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Iwetemlaykin State Heritage Site
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Sheep Rock
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Wallowa County Courthouse
49.5 km
OK Theatre
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Cornucopia Jailhouse
47.1 km
College Creek Ranger Station
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William P. Warnock House
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First Bank of Joseph
43.2 km
Enterprise Public Library
49.5 km
Flora School
51.2 km
Dr. J. W. Barnard Building and First National Bank of Joseph
43.1 km
Lick Creek Guard Station
27.6 km
Col. E. M. Heigho House
44.6 km
Alvin M. and Betty Josephy Library of Western History and Culture
43.4 km
Enterprise I.O.O.F. Hall
49.5 km
Matterhorn Village
40.1 km
Hat Point Fire Lookout Tower
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North Beach
56.9 kmReviews
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