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- Bodies of water 46
- Northwest, Pacific 46
- Railroad engineering 46
- River engineering 46
- West (U.S.) 46
Region
- Columbia River >> Clatsop County >> Oregon >> United States 46
- Snake River >> British Columbia >> Canada 46
- Cascade Locks >> Hood River County >> Oregon >> United States 45
- Willamette River >> Multnomah County >> Oregon >> United States 45
- Yamhill River >> Yamhill County >> Oregon >> United States 45
- British Columbia >> Canada 1
- Celilo Falls (historical) >> Wasco County >> Oregon >> United States 1
- Lewiston >> Nez Perce County >> Idaho >> United States 1
- Oregon >> United States 1
- Pacific Ocean >> Earth 1
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- Creative Commons: Public Domain Mark 1.0 46
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- Text 46
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