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3. Fish ladder
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Topic
- Rivers--Oregon 93
- Dams 37
- Fishways 12
- Fish hatcheries 7
- Canals 5
- Salmon 5
- Salmon--Artificial spawning 5
- Waterfalls 5
- Coarse woody debris 4
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Region
- Linn County >> Oregon >> United States 93
- Willamette River >> Multnomah County >> Oregon >> United States 89
- Calapooia River >> Linn County >> Oregon >> United States 17
- Santiam River >> Marion County >> Oregon >> United States 16
- Marion County >> Oregon >> United States 15
- Middle Santiam River >> Linn County >> Oregon >> United States 10
- Albany >> Linn County >> Oregon >> United States 6
- Crabtree Creek >> Linn County >> Oregon >> United States 6
- Thomas Creek Bridge >> Curry County >> Oregon >> United States 5
- McKenzie River >> Lane County >> Oregon >> United States 3
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- image/tiff 93
Institution
- Oregon State University 93
