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Bonneville Dam Historic District

Bonneville, Oregon
County of Multnomah.
Columbia River (also in Washington)
National Register Number: 86000727
Resource type: District.
Property type: Engineering Structure. The threat level was Satisfactory in
Certified Local Government: NO
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Current use/information: Dam and support structures..

Statement of Significance (as of designation - June 30, 1987):
Built in the 1930s by the Federal government to raise and divert the Columbia River to generate hydroelectric power, the dam represented a unique engineering challenge for a diversion/overflow dam; it was the first major structure built with a "hydraulic drop" capable of developing more than 500,000 KW of electric power. Other structures in the district are the #1 Powerhouse, the Navigation Lock, the Fishways, and the Fish Hatchery.

The majority of the historic district is in good repair.

No significant recent issues or actions have affected the landmark.

Comments and questions about the database may be directed to NHL_info@nps.gov