Limit your search
Topic
- Dams 2
- Irrigation 2
- Northwest, Pacific 2
- Transportation 2
- Agriculture 1
- Hydroelectric power plants 1
- Industrialization 1
- Locks (Hydraulic engineering) 1
- Maps 1
- Public utilities 1
- more ยป
Region
- Bonneville Dam >> Multnomah County >> Oregon >> United States 2
- Columbia River >> Douglas County >> Washington >> United States 2
- Grand Coulee Dam >> Okanogan County >> Washington >> United States 2
- Oregon >> United States 1
- Washington >> United States 1
Type
- Collection 1
- Text 1