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Topic
- Dams 17
- Northwest, Pacific 17
- Bodies of water 16
- Aerial photographs 15
- Rivers 15
- Maps 4
- Hydroelectric power plants 2
- Industrialization 2
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- Agriculture 1
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Region
- Columbia River >> Douglas County >> Washington >> United States 17
- Oregon >> United States 17
- Washington >> United States 17
- Bonneville Dam >> Multnomah County >> Oregon >> United States 6
- Flathead River >> Sanders County >> Montana >> United States 1
- Grand Coulee Dam >> Okanogan County >> Washington >> United States 1
- Santiam River >> Marion County >> Oregon >> United States 1
- Skagit River >> Skagit County >> Washington >> United States 1
- Willamette River >> Multnomah County >> Oregon >> United States 1
Rights
- No Copyright - United States 17
Type
- Image 14
- Collection 2
- Text 1