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Creator
- United States. Army. Office of the Chief of Engineers 35
Topic
- United States--Appropriations and expenditures 35
- River engineering 31
- West (U.S.) 19
- River surveys 12
- Transportation 4
- Canals--Design and construction--Costs 2
- Dams--Design and construction 2
- Locks (Hydraulic engineering) 2
- Bridges--Design and construction 1
- Railroad engineering 1
Region
- Portland >> Clackamas County >> Oregon >> United States 35
- Willamette River >> Multnomah County >> Oregon >> United States 25
- Columbia River >> Clatsop County >> Oregon >> United States 22
- Yamhill River >> Yamhill County >> Oregon >> United States 6
- Oregon City >> Clackamas County >> Oregon >> United States 5
- Clackamas Rapids >> Clackamas County >> Oregon >> United States 4
- Oregon >> United States 4
- Clatskanie River >> Columbia County >> Oregon >> United States 3
- Corvallis >> Benton County >> Oregon >> United States 3
- Eugene >> Lane County >> Oregon >> United States 3
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License
- Creative Commons: Public Domain Mark 1.0 35
Format
- image/jpeg 35
Institution
- University of Oregon 35