Region
United States
5,400
Mississippi River
359
Mississippi River Region
358
Missouri River
331
Missouri River Region
331
Minnesota
160
Pennsylvania
152
Arkansas
142
Louisiana
141
Illinois
140
Missouri
131
Alabama
99
New York (State)
93
Ohio River
93
Ohio River Region
93
Texas
88
Mississippi
77
Canal Zone
75
Tennessee River
75
Columbia River
72
West Virginia
68
Washington (State)
67
Monongahela River (W. Va. and Pa.)
66
Kentucky
64
Nebraska
59
Oregon
57
Cumberland River (Ky. and Tenn.)
54
Indiana
54
Tennessee
54
Wisconsin
52
Georgia
49
Michigan
49
South Carolina
45
Allegheny River (Pa. and N.Y.)
44
Big Sandy River (Ky. and W. Va.)
44
Ohio
43
Iowa
40
New Jersey
40
Susquehanna River
40
Florida
39
North Dakota
39
Arkansas River
37
Saint Francis River (Mo. and Ark.)
37
Savannah River (Ga. and S.C.)
37
South Dakota
37
Wabash River
37
Panama Canal (Panama)
35
Mahoning River (Ohio and Pa.)
34
California
33
Potomac River
33
more ...