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Creator
- United States. Army. Office of the Chief of Engineers 31
Topic
- Canals--Design and construction--Costs 31
- Dams--Design and construction 29
- West (U.S.) 28
- Bodies of water 26
- Transportation 26
- Northwest, Pacific 25
- Rivers 25
- Water resources development 25
- Locks (Hydraulic engineering) 5
- United States--Appropriations and expenditures 5
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Region
- Willamette River >> Multnomah County >> Oregon >> United States 31
- Portland >> Clackamas County >> Oregon >> United States 30
- Columbia River >> Clatsop County >> Oregon >> United States 29
- Cowlitz River >> Cowlitz County >> Washington >> United States 27
- Snake River >> Franklin County >> Washington >> United States 25
- Nooksack River >> Whatcom County >> Washington >> United States 24
- Chehalis River >> Grays Harbor County >> Washington >> United States 23
- Skagit River >> Skagit County >> Washington >> United States 23
- Snohomish River >> Snohomish County >> Washington >> United States 21
- Astoria >> Clatsop County >> Oregon >> United States 14
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Type
- Text 26
- Collection 5