The Colorado River makes a horseshoe bend around a butte. Grand Canyon National Park, Arizona.
The Colorado River makes a horseshoe bend around a butte. Grand Canyon National Park, Arizona.
Photograph by Nick Nichols, Nat Geo Image Collection

Top 10 Most Endangered Rivers in the U.S.

These rivers face a number of threats, from dams to pollution and a possible reduction in conservation funding.

Water is life, yet climate change and certain public policies may be endangering its future in America, a nonprofit group warns in a new report. The stakes are high, with the current presidential administration having proposed budget cuts that may eliminate some safeguards for clean drinking water and rivers nationwide.

That’s according to American Rivers, a Washington, D.C.-based conservation group, which released its annual list of America’s Most Endangered Rivers on Tuesday. The list outlines rivers that the group warns face an urgent threat or critical decision point in the coming year.

The Lower Colorado River, which provides drinking water for more than 30 million Americans—including those in major cities like L.A., Las Vegas, and Phoenix—tops the list as the

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