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America's Ten Most Endangered Rivers, 2010

Each year the organization American Rivers analyzes the condition of the nation's rivers to determine which are the most “endangered.” Threats to these rivers include dams and channelizations that are harmful to fish or wildlife populations; depletion due to the rivers' use as a water supply for human populations; and coal mining operations that fill streams with coal and dirt. For more information, refer to the American Rivers website: www.americanrivers.org.

Rank	River	Region
1.	Upper Delaware River	Pennsylvania, New York
2.	Sacramento-San Joaquin River Delta	California
3.	Gauley River	West Virginia
4.	Little River	North Carolina
5.	Cedar River	Iowa
6.	Upper Colorado River	Colorado
7.	Chetco River	Oregon
8.	Teton River	Idaho
9.	Monongahela	Pennsylvania, West Virginia
10.	Coosa River	Alabama

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