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Region
- Lewis River >> Cowlitz County >> Washington >> United States 4
- Columbia River >> Clatsop County >> Oregon >> United States 2
- Cowlitz River >> Cowlitz County >> Washington >> United States 2
- Clackamas River >> Clackamas County >> Oregon >> United States 1
- Clatskanie River >> Columbia County >> Oregon >> United States 1
- Columbia River >> Douglas County >> Washington >> United States 1
- Grays River >> Wahkiakum County >> Washington >> United States 1
- Ilwaco >> Pacific County >> Washington >> United States 1
- Lake River >> Clark County >> Washington >> United States 1
- Oregon >> United States 1
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Institution
- University of Oregon 4