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Topic
- River engineering 44
- United States--Appropriations and expenditures 37
- West (U.S.) 30
- Canals--Design and construction--Costs 5
- Northwest, Pacific 5
- Transportation 5
- Bodies of water 4
- Jetties 4
- Locks (Hydraulic engineering) 4
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Region
- Columbia River >> Clatsop County >> Oregon >> United States 30
- Portland >> Clackamas County >> Oregon >> United States 22
- Willamette River >> Multnomah County >> Oregon >> United States 15
- Clatskanie River >> Columbia County >> Oregon >> United States 7
- Cowlitz River >> Cowlitz County >> Washington >> United States 6
- Yamhill River >> Yamhill County >> Oregon >> United States 6
- Oregon City >> Clackamas County >> Oregon >> United States 5
- Pacific Ocean >> Earth 5
- Snake River >> British Columbia >> Canada 5
- Vancouver >> Clark County >> Washington >> United States 5
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License
- Creative Commons: Public Domain Mark 1.0 44
Type
- Text 41
- Collection 3
Decade
- 1910-1919 44