The environmental advocacy group American Rivers released a list of what it calls the 10 most endangered rivers in the nation on Wednesday. The rivers, their location and biggest threat:
1. Upper Delaware River, New York, natural gas extraction.
2. Sacramento-San Joaquin River Delta, California, outdated water and flood management.
3. Gauley River, West Virginia, mountaintop removal coal mining.
4. Little River, North Carolina, new dam.
5. Cedar River, Iowa, outdated flood management.
6. Upper Colorado River, Colorado, water diversions.
7. Chetco River, Oregon, mining.
8. Teton River, Idaho, new dam.
9. Monongahela River, Pennsylvania and West Virginia, natural gas extraction.
10. Coosa River, Alabama, hydropower dams.
