Bonneville Lock and Dam consists of several run-of-the-river dam structures that together complete a
span of the Columbia River between the U.S. states of Oregon and Washington at River Mile 146.1. The
dam is located 40 miles (64 km) east of Portland, Oregon, in the Columbia River Gorge. The primary
functions of Bonneville Lock and Dam are electrical power generation and river navigation. The dam was
built and is managed by the United States Army Corps of Engineers. Electrical power generated at
Bonneville is distributed by the Bonneville Power Administration. Bonneville Lock and Dam is named for
Army Capt. Benjamin Bonneville, an early explorer credited with charting much of the Oregon Trail.
The Bonneville Dam Historic District was designated a National Historic Landmark District in 1987.
~ Wikipedia