- Willamette Valley, Multnomah County, Oregon, United States3
- Alsea River, Oregon, United States, (Hydrographic)2
- Halsey, Linn County, Oregon, United States2
- Oregon, Oregon, United States, (Administrative Boundary)2
- Shedd, Linn County, Oregon, United States2
- Tangent, Linn County, Oregon, United States2
- Baker, Oregon, United States, (Administrative Boundary)1
- Cape Arago, Coos County, Oregon, United States1
- Chetco River Estuary, Oregon, United States, (Hydrographic)1
- Clackamas, Oregon, United States, (Administrative Boundary)1
- Coos Bay Estuary, Oregon, United States, (Hydrographic)1
- Coos Bay, Oregon, United States, (Hydrographic)1
- Coquille River Estuary, Oregon, United States, (Hydrographic)1
- Eastern Oregon, Oregon, United States, (Area)1
- Grant, Oregon, United States, (Administrative Boundary)1
- Hatfield Marine Science Center - Oregon State University, Oregon, United States, (Spot)1
- Jefferson, Oregon, United States, (Administrative Boundary)1
- Methow River, Washington, United States, (Hydrographic)1
- Montana, Montana, United States, (Administrative Boundary)1
- Morrow, Oregon, United States, (Administrative Boundary)1