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Region
- Snohomish River >> Snohomish County >> Washington >> United States 20
- Nooksack River >> Whatcom County >> Washington >> United States 19
- Skagit River >> Skagit County >> Washington >> United States 19
- Chehalis River >> Grays Harbor County >> Washington >> United States 18
- Columbia River >> Clatsop County >> Oregon >> United States 18
- Cowlitz River >> Cowlitz County >> Washington >> United States 18
- Portland >> Clackamas County >> Oregon >> United States 18
- Snake River >> Franklin County >> Washington >> United States 18
- Willamette River >> Multnomah County >> Oregon >> United States 18
- Astoria >> Clatsop County >> Oregon >> United States 9
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- Text 20
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- University of Oregon 20