Region
United States
44
Alaska
15
Yellowstone River
12
Montana
9
Yellowstone River Watershed
9
Susitna River
4
Yellowstone River Valley
4
Susitna River Watershed
2
Codorus Creek, West Branch
1
Pennsylvania
1
Susitna River (Alaska)
1
Susitna River Region
1
Susitna River Valley
1
Tongue River
1
Tongue River (Wyo. and Mont.)
1
United States, West
1
West (U.S.)
1