In the Pacific Northwest, the Snake River and its wilderness tributaries were—as recently as a half century ago—some of the world’s greatest salmon rivers. Now, due to four federal dams, the salmon population has dropped close to extinction. Steven Hawley, journalist and self-proclaimed “river rat,” argues that the best hope for the Snake River lies in dam removal, a solution that pits the power companies and federal authorities against a collection of Indian tribes, farmers, fishermen, and river recreationists. The river’s health, as he demonstrates, is closely connected to local economies, freshwater rights, and energy independence. Challenging the notion of hydropower as a cheap, green source of energy, Hawley depicts the efforts being made on behalf of salmon by a growing army of river warriors. Their message, persistent but disarmingly simple, is that all salmon need is water in their rivers and a clear way home.