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Topic
- Bodies of water 4
- Canals--Design and construction--Costs 4
- Dams--Design and construction 4
- Transportation 4
- West (U.S.) 4
- Northwest, Pacific 3
- Rivers 3
- Water resources development 3
- Cascade Range 1
- Locks (Hydraulic engineering) 1
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Region
- Columbia River >> Clatsop County >> Oregon >> United States 4
- Cowlitz River >> Cowlitz County >> Washington >> United States 4
- Portland >> Clackamas County >> Oregon >> United States 4
- Willamette River >> Multnomah County >> Oregon >> United States 4
- Chehalis River >> Grays Harbor County >> Washington >> United States 3
- Nooksack River >> Whatcom County >> Washington >> United States 3
- Skagit River >> Skagit County >> Washington >> United States 3
- Snake River >> Franklin County >> Washington >> United States 3
- Astoria >> Clatsop County >> Oregon >> United States 2
- Nehalem Bay >> Tillamook County >> Oregon >> United States 2
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Rights
- No Copyright - United States 4
Format
- application/xml 4