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Creator
- United States. Army. Corps of Engineers 6
- United States. Bonneville Power Administration 5
- United States. Department of the Interior 5
- WAC Corp. 4
- United States. Commodity Stabilization Service 2
- United States. Forest Service 2
- EROS Data Center 1
- United States. Agricultural Stabilization and Conservation Service 1
- United States. Army Map Service 1
Topic
- Dams 28
- Northwest, Pacific 28
- Aerial photographs 23
- Bodies of water 23
- Rivers 23
- Water-power 4
- Irrigation 3
- Maps 3
- Hydroelectric power plants 2
- Locks (Hydraulic engineering) 2
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Region
- Oregon >> United States 24
- Columbia River >> Douglas County >> Washington >> United States 23
- Washington >> United States 19
- 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
Type
- Image 22
- Text 4
- Collection 2
Collection
- Western Waters Digital Library 28
Institution
- University of Oregon 28