Region
Mississippi River
Mississippi River Valley
12
Ohio River
4
Louisiana
3
United States
3
Mississippi (Fleuve)
2
Allegheny River Valley (Pa. and N.Y.)
1
États-Unis
1
États-Unis (Ouest)
1
France
1
Louisiane
1
Mississippi, Vallée du
1
Monongahela River Valley (W. Va. and Pa.)
1
Niagara Falls (N.Y. and Ont.)
1
Niagara, Chutes du (N.Y. et Ont.)
1
Ohio River Valley
1
West (U.S.)
1
West United States
1