#1 Potomac River
America's Most Endangered Rivers® of 2026
America’s Most Endangered Rivers® of 2026 spotlights how data center development, mining, and pollution are putting river health and public well-being at risk.
Learn More about America’s Most Endangered Rivers®
-
America’s Most Endangered Rivers® of 2026 is a Call to Action for Healthy Rivers and a Cleaner Water Supply
America’s rivers are losing their life-giving power – choked by dams, contaminated by pollution, and overwhelmed by increasingly severe floods and droughts. This is not just an environmental tragedy, but a profound threat to our health, communities, and safety. We can still protect our vital lifelines, but we have to do it quickly.
-
Support Our Partners
Our local partners make the America's Most Endangered Rivers campaign possible. We are grateful for their commitment. Please support their critical work.
-
Los ríos más amenazados de Estados Unidos
Próximamente disponible en español.
America’s Most Endangered Rivers® of 2026