For thousands of years, the Yurok have gathered along the Klamath River in northern California to honor the life-affirming runs of wild salmon. But these days their annual festivals have come to feel more like funerals than celebrations. There are so few salmon in these waters that the Yurok Tribe has had to resort to importing them from Alaska. … The reasons for the decimation of the salmon runs are many, climate change among them. But the biggest culprit, actually the four biggest culprits, are the decrepit hydroelectric dams on the Klamath River.