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Creator
- United States. Army. Office of the Chief of Engineers 13
Topic
- Locks (Hydraulic engineering) 13
- United States--Appropriations and expenditures 9
- River engineering 8
- Canals--Design and construction--Costs 7
- Dams--Design and construction 6
- West (U.S.) 6
- River surveys 5
- Cascade Range 1
Region
- Columbia River >> Clatsop County >> Oregon >> United States 10
- Willamette River >> Multnomah County >> Oregon >> United States 6
- Portland >> Clackamas County >> Oregon >> United States 5
- Yamhill River >> Yamhill County >> Oregon >> United States 3
- Oregon City >> Clackamas County >> Oregon >> United States 2
- The Dalles >> Wasco County >> Oregon >> United States 2
- Astoria >> Clatsop County >> Oregon >> United States 1
- British Columbia >> Canada 1
- Cascade Locks >> Hood River County >> Oregon >> United States 1
- Clackamas Rapids >> Clackamas County >> Oregon >> United States 1
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Format
- image/jpeg 13
Institution
- University of Oregon 13