Hydroelectric Information for Columbia and Snake River Projects

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Chief Joseph Dam - General Information

Image Source: USACE Digital Visual Library

Dam: Chief Joseph Dam. Columbia River. River Mile 545.1

Constructed: 1961 (units 1-16), 1979 (units 17-27)

Owner: U.S. Army Corps of Engineers, Seattle District

Full Pool: 956.0 feet

Minimum Pool: 930.0 feet

Powerhouse Capacity:

Nameplate capacity: 16 @ 64 MW, 11 @ 95 MW, 2069 MW total

Overload capacity: 16 @ 88.3 MW, 11 @ 109.3 MW, 2614 MW total

Station service units: 2 @ 3 MW, 6 MW total

Hydraulic capacity: 219 kcfs

Spillway: 980 feet, 19 gates

• Visitor Information: see Chief Joseph Dam's Visitor Center page, USACE Seattle District
• USACE Seattle District for information and history of the dam.
• USACE Hydroelectric Design Center for detailed hydroplant (pdf) information.