The Salmon River is located in Idaho in the northwestern United States. The Salmon is also known as The River of No Return. It flows for 425 miles (684 km) through central Idaho, draining 14,000 square miles (36,260 km2) and dropping more than 7,000 feet (2,134 m) between its headwaters above the Sawtooth Valley in the Sawtooth National Recreation Area and its confluence with the Snake River. Its discharge is 11,060 cubic feet (313 m3) per second.[5] It is the second largest tributary of the Snake River behind the Clearwater River. Cities located along the Salmon River include Stanley, Clayton, Challis, Salmon, Riggins, and White Bird.