Category:Rivers of the United States in the 20th century

Rivers of the United States by century: 16th century · 17th century · 18th century · 19th century · 20th century · 21st century ·

Subcategories

This category has the following 12 subcategories, out of 12 total.

C

Charles River in the 20th century‎ (13 F)
Columbia River in the 20th century‎ (9 F)

D

Delaware River in the 20th century‎ (11 C, 2 F)

H

Hudson River in the 20th century‎ (2 C, 53 F)

I

Illinois River in the 20th century‎ (1 F)

M

Merrimack River in the 20th century‎ (3 F)
Mississippi River in the 20th century‎ (3 C, 4 F)

N

Niagara River in the 20th century‎ (1 C, 59 F)

O

Ohio River in the 20th century‎ (2 C, 6 F)

P

Potomac River in the 20th century‎ (1 C, 17 F)

S

Schuylkill River in the 20th century‎ (14 F)
Susquehanna River in the 20th century‎ (1 C, 12 F)

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