America's Most Endangered Rivers

First published in 1984, the annual list spotlights ten threatened rivers–rivers that are facing environmental degradation due to existing or proposed development projects.

The list is intended to build public awareness and spur action toward addressing specific environmental issues.

[1][2] A number of rivers have been listed on America's Most Endangered Rivers multiple times, either in whole or in part.

This list includes items that have appeared three or more times.

[53] American Rivers announced its ten most endangered rivers of 1987 via press release, with no accompanying report.

All ten rivers faced dam proposals.

[54] American Rivers announced its ten most endangered rivers of 1986 via press release, with no accompanying report.

The Colorado River has been named America's Most Endangered River seven times.
The Ice Harbor Dam is one of four dams on the Lower Snake River causing it to top the 2021 list.
Friant Dam diverting much of the San Joaquin River into irrigation canals. Water mismanagement led to the San Joaquin topping the 2014 list.
Rendering of the Auburn Dam proposed on the American River . The dam was ultimately never built.