<P> The river turns abruptly north at the confluence with the Little Salmon River at Riggins , about 87 miles ( 140 km ) 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 , 15 miles ( 25 km ) south of the Washington border and 40 miles ( 65 km ) south of Lewiston . The Salmon River is the longest river system contained entirely within a single U.S. state . </P>
<P> The river turns abruptly north at the confluence with the Little Salmon River at Riggins , about 87 miles ( 140 km ) 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 , 15 miles ( 25 km ) south of the Washington border and 40 miles ( 65 km ) south of Lewiston . The Salmon River is the longest river system contained entirely within a single U.S. state . </P>
where does the salmon river meet the snake river
where does the salmon river meet the snake river
north of Hells Canyon , 15 miles ( 25 km ) south of the Washington border and 40 miles ( 65 km ) south of Lewiston
north of Hells Canyon , 15 miles ( 25 km ) south of the Washington border and 40 miles ( 65 km ) south of Lewiston