Bonneville Dam

The Bonneville Dam stretches more than a kilometer between Oregon and Washington, using the drop of the Columbia River to generate power. The facility includes two powerhouses positioned at different points, along with a lock system for vessel traffic.

Construction began during the economic downturn as a work project and was completed within a few years. The facility was among the earliest large structures on the Columbia and transformed navigation upstream.

Fishing has been part of daily life along the Columbia River for centuries, and trails near the structure still recall that tradition. The visitor center shows how moving water produces power and what that means for the region.

The facility is accessible from both riverbanks, with parking available on the Oregon side. Visitors should allow enough time to see both the technical installations and the observation windows.

Underwater windows show salmon, trout, and other fish climbing through specially built ladders. These passages allow the animals to bypass the barrier and continue their migration routes.

Location: Multnomah County

Location: Skamania County

Location: Bonneville Dam Historic District

Architects: Claussen and Claussen

Length: 1,056 m

GPS coordinates: 45.64417,-121.94083

Latest update: December 5, 2025 22:22