California invests $60M to restore salmon populations in Yuba River.

California officials will spend $60 million to build a channel along the Yuba River to allow salmon and other threatened fish species to bypass a Gold Rush-era dam that has cut off their migration for over a century. The project is part of state and federal officials' efforts to reverse the environmental damage caused by century-old infrastructure along California's major rivers and streams. The dam blocks three species of fish from migrating up the river to spawn, and the National Marine Fisheries Service declared in 2012 that the dam posed a threat to the survival of those fish species.