The YSPI is an ambitious effort to establish that salmon reintroductions in California’s Sierra Nevada can contribute to the recovery of these iconic species. The discoveries and lessons that emerge from this process could be invaluable to biologists throughout the range of Pacific salmon species. Ultimately, this process is part of an effort to undo some 5 the damage caused during the Gold Rush. Hydraulic mining was one of the most disruptive events to occur in the Yuba River watershed – and it was undertaken for years without a full accounting of the unintended impacts to other resources in the watershed. Restoring this river and its salmon runs will be a significant step towards salmon recovery and has social, cultural and even economic benefits to all of California, especially future generations.