Region
Oregon
Willamette River
16
Willamette River Watershed
15
United States
7
Upper Klamath Lake
5
Sandy River Watershed
4
Tualatin River
4
Willamette River Watershed (Or.)
4
Agency Lake
3
Bull Run River Watershed
3
Columbia River Watershed
3
Malheur Lake
3
Newberry Volcano
3
North Umpqua River Watershed
3
Willamette River (Or.)
3
Amazon Creek (Or.)
2
Amazon Creek Watershed
2
Cascade Range
2
Fanno Creek (Multnomah County and Washington County)
2
Harney County
2
Malheur National Wildlife Refuge
2
Malheur National Wildlife Refuge (Or.)
2
Malheur River
2
Pacific Coast
2
Salem Region
2
Santiam River
2
Tualatin River Watershed
2
Umpqua River Watershed
2
Upper Klamath Lake (Or.)
2
Washington (State)
2
Agency Lake (Or.)
1
Bull Run River Watershed (Or.)
1
Clackamas County
1
Clackamas River Watershed
1
Coos Bay Region
1
Detroit Lake
1
Douglas County (Or.)
1
Grand Ronde
1
Grand Ronde Indian Reservation
1
Grand Ronde Region
1
Henry Hagg Lake
1
Idaho
1
Johnson Creek (Clackamas County and Multnomah County)
1
Johnson Creek (Clackamas County and Multnomah County, Or.)
1
Johnson Creek Watershed (Clackamas County and Multnomah County)
1
Klamath River (Or. and Calif.)
1
Lincoln County
1
Little River Watershed (Douglas County)
1
Long Tom River
1
Long Tom River (Or.)
1
more ...