This California river once carried thousands of salmon every year. A 1942 dam changed it forever, and scientists are still trying to bring them back

Friant Dam construction in 1942 altered the San Joaquin River, impacting salmon populations. A 2006 settlement agreement initiated restoration efforts for the river and its fish. The program aims to reestablish spring-run Chinook salmon while managing water for agriculture. Multiple agencies collaborate on scientific research and habitat improvements for the river. Monitoring tracks progress and guides adjustments for long-term ecological recovery.