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Topic
- Dams 51
- Rivers 28
- Hydraulic structures 20
- Dams--Design and construction 11
- Building 10
- Concrete dams 9
- Water-power 8
- Hydroelectric power plants 6
- Trees 6
- Construction equipment 5
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Region
- Deschutes Dam >> Thurston County >> Washington >> United States 2
- Merwin Dam >> Cowlitz County >> Washington >> United States 2
- Brownsville >> Linn County >> Oregon >> United States 1
- Clackamas River >> Clackamas County >> Oregon >> United States 1
- Lake Bonneville >> Multnomah County >> Oregon >> United States 1
Format
- image/tiff 51
Decade
- 1880-1889 51