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Topic
- Dams 20
- Northwest, Pacific 20
- Bodies of water 19
- Aerial photographs 18
- Rivers 18
- Maps 4
- Hydroelectric power plants 2
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Region
- Columbia River >> Douglas County >> Washington >> United States 20
- Oregon >> United States 20
- Washington >> United States 20
- 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
Type
- Image 17
- Collection 2
- Text 1