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Topic
- River engineering 4
- United States--Appropriations and expenditures 4
- River surveys 3
- Canals--Design and construction--Costs 2
- Dams--Design and construction 2
- Locks (Hydraulic engineering) 2
- Bodies of water 1
- Bridges--Design and construction 1
- Cascade Range 1
- Railroad construction & maintenance 1
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Region
- Columbia River >> Clatsop County >> Oregon >> United States 4
- Priest Rapids >> Kittitas County >> Washington >> United States 4
- Rock Island Rapids >> Chelan County >> Washington >> United States 4
- Snake River >> British Columbia >> Canada 4
- Astoria >> Clatsop County >> Oregon >> United States 3
- Cabinet Rapids (historical) >> Chelan County >> Washington >> United States 3
- Celilo Falls (historical) >> Wasco County >> Oregon >> United States 3
- Cowlitz River >> Cowlitz County >> Washington >> United States 3
- Portland >> Clackamas County >> Oregon >> United States 3
- The Dalles >> Wasco County >> Oregon >> United States 3
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License
- Creative Commons: Public Domain Mark 1.0 4
Type
- Collection 3
- Text 1
Collection
- Western Waters Digital Library 4