Bonneville Dam - Hydroelectric Project Information
General Information
- Dam:
- Bonneville Dam. Columbia River. River Mile 146.1
- Constructed:
- 1938 (second powerhouse completed in 1982)
- Owner:
- U.S. Army Corps of Engineers, Portland District
- Full Forebay:
- 77.0 feet
- Normal Forebay:
- 71.5 - 76.5 feet
- First Powerhouse Capacity:
- Nameplate capacity: 2 @ 43 MW, 8 @ 54 MW, 518 MW total
- Overload capacity: 2 @ 47 MW, 8 @ 60 MW, 574 MW total
- Station service units: 1 @ 4 MW, 4 MW total
- Hydraulic capacity: 136 kcfs
- Second Powerhouse Capacity:
- Nameplate capacity: 8 @ 66.5 MW, 532 MW total
- Overload capacity: 8 @ 76.5 MW, 612 MW total
- Fishway units capacity: 2 @ 13.1 MW, 26.2 MW total
- Hydraulic capacity: 152 kcfs
- Spillway 1:
- 1450 feet, 18 gates
1 Information provided by USACE Portland District via phone, 1/6/1997.
Additional Information
Bonneville Dam web page. Contact U.S. Army Corps of Engineers, Portland District for all additional information.
