The Mississippi River is considered the most endangered in the U.S. due to uncertainty over the Federal Emergency Management Agency's future.

The Mississippi River is the nation’s most endangered river, a national conservation group says, because of federal plans to cut flood relief programs as severe weather threats grow.

A conservation group on Wednesday named the Mississippi River the “most endangered river of 2025,” citing threats to abolish the Federal Emergency Management Agency (FEMA), which plays a key role