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Creator
- United States. Army. Corps of Engineers 6
- United States. Department of the Interior 6
- United States. Bonneville Power Administration 5
- United States. Commodity Stabilization Service 2
- United States. Forest Service 2
- WAC Corp. 2
- EROS Data Center 1
- United States. Agricultural Stabilization and Conservation Service 1
- United States. Army Map Service 1
Topic
- Dams 26
- Northwest, Pacific 26
- Bodies of water 21
- Aerial photographs 20
- Rivers 20
- Water-power 5
- Maps 4
- Hydroelectric power plants 3
- Irrigation 3
- Industrialization 2
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Region
- Oregon >> United States 22
- Columbia River >> Douglas County >> Washington >> United States 21
- Washington >> United States 17
- Bonneville Dam >> Multnomah County >> Oregon >> United States 10
- Columbia River >> Clatsop County >> Oregon >> United States 5
- Grand Coulee Dam >> Okanogan County >> Washington >> United States 3
- Flathead River >> Sanders County >> Montana >> 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 26
Type
- Image 19
- Text 5
- Collection 2
Collection
- Western Waters Digital Library 26