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Region
- Portland >> Clackamas County >> Oregon >> United States 1571
- Multnomah County >> Oregon >> United States 1458
- United States 1430
- Oregon >> United States 1416
- Willamette River >> Multnomah County >> Oregon >> United States 57
- Columbia River >> Clatsop County >> Oregon >> United States 51
- Cowlitz River >> Cowlitz County >> Washington >> United States 24
- Snake River >> Franklin County >> Washington >> United States 22
- Chehalis River >> Grays Harbor County >> Washington >> United States 20
- Nooksack River >> Whatcom County >> Washington >> United States 20
- Skagit River >> Skagit County >> Washington >> United States 20
- Portland State University >> Multnomah County >> Oregon >> United States 18
- Snohomish River >> Snohomish County >> Washington >> United States 18
- Astoria >> Clatsop County >> Oregon >> United States 13
- Columbia City >> Columbia County >> Oregon >> United States 11
- Nehalem Bay >> Tillamook County >> Oregon >> United States 9
- Palouse River >> Franklin County >> Washington >> United States 9
- Smith Memorial Student Union, Portland State University >> Multnomah County >> Oregon >> United States 9
- Umpqua River >> Douglas County >> Oregon >> United States 9
- Yamhill River >> Yamhill County >> Oregon >> United States 8