Region
Ohio
15
Ohio River
3
Cuyahoga River
2
Cuyahoga Valley National Park
2
Kentucky
2
Cuyahoga River Watershed
1
Little Miami River Watershed
1
Maumee River Watershed (Ind. and Ohio)
1
Miami River Valley
1
Miami River Valley (Ohio)
1
Miami River Watershed
1
Ohio River Watershed
1
Oregon
1
Paducah
1
United States
1