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Creator
- United States. Army. Office of the Chief of Engineers 57
Topic
- River surveys 57
- River engineering 54
- United States--Appropriations and expenditures 52
- Locks (Hydraulic engineering) 7
- Canals--Design and construction--Costs 4
- Dams--Design and construction 4
- Maps 4
- United States--Armed Forces--Organization--Charts, diagrams, etc 4
- United States. Congress--Records and correspondence 3
- Bridges--Design and construction 2
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Region
- Columbia River >> Clatsop County >> Oregon >> United States 41
- Willamette River >> Multnomah County >> Oregon >> United States 25
- Portland >> Clackamas County >> Oregon >> United States 14
- Oregon >> United States 9
- Snake River >> British Columbia >> Canada 7
- Vancouver >> Clark County >> Washington >> United States 7
- Yamhill River >> Yamhill County >> Oregon >> United States 7
- Astoria >> Clatsop County >> Oregon >> United States 6
- Clackamas Rapids >> Clackamas County >> Oregon >> United States 6
- Rock Island Rapids >> Chelan County >> Washington >> United States 6
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License
- Creative Commons: Public Domain Mark 1.0 57
Type
- Text 54
- Collection 3
