Salmon River (Idaho) Salmon River (Idaho) 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 through central Idaho, draining a rugged, thinly populated watershed of and dropping more than between its headwaters, near Galena Summit above the Sawtooth Valley in the Sawtooth National Recreation Area, and its confluence with the Snake River. Measured at White Bird, its average discharge is per second. It is one of the largest rivers in the continental United States without a single dam on its mainstem. Cities located along the Salmon
Salmon River (Idaho) degrees north latitude. The river turns abruptly north at the confluence with the Little Salmon River at Riggins, about above its mouth. From there the river flows almost due north, with U.S. Route 95 on its east bank until a few miles before White Bird; the river then loops northwest and south to its confluence with the Snake River north of Hells Canyon, south of the Washington border and south of Lewiston. The Salmon River is the longest river system contained entirely within a single U.S. state. The Salmon River area has been home to people for at least the