US removed 100 outdated dams in 2025, reconnecting more than 4,893 river miles across 30 states

In 2025, the US removed 100 outdated and unsafe dams across 30 states, reconnecting more than 4,893 miles of rivers, the highest number of upstream river miles restored through dam removal in a single year. The projects reopened fish habitats, improved river connectivity and addressed public safety concerns. Pennsylvania led with 14 removals, followed by Massachusetts with 11 and Vermont with nine.