<P> At the halfway point in Hells Canyon , in one of the most remote and inaccessible sections of its course , the Snake River is joined from the east by its largest tributary , the Salmon River . From there , the Snake begins to form the Washington -- Idaho border , receiving the Grande Ronde River from the west before receiving the Clearwater River from the east at Lewiston , which marks the head of navigation on the Snake . The river leaves Hells Canyon and turns west , winding through the Palouse Hills of eastern Washington . The Lower Snake River Project 's four dams and navigation locks have transformed this part of the Snake River into a series of reservoirs . The confluence of the Snake and Columbia rivers at Burbank , Washington is part of Lake Wallula , the reservoir of McNary Dam . The Columbia River flows about 325 miles ( 523 km ) further west to the Pacific Ocean near Astoria , Oregon . </P>
<P> At the halfway point in Hells Canyon , in one of the most remote and inaccessible sections of its course , the Snake River is joined from the east by its largest tributary , the Salmon River . From there , the Snake begins to form the Washington -- Idaho border , receiving the Grande Ronde River from the west before receiving the Clearwater River from the east at Lewiston , which marks the head of navigation on the Snake . The river leaves Hells Canyon and turns west , winding through the Palouse Hills of eastern Washington . The Lower Snake River Project 's four dams and navigation locks have transformed this part of the Snake River into a series of reservoirs . The confluence of the Snake and Columbia rivers at Burbank , Washington is part of Lake Wallula , the reservoir of McNary Dam . The Columbia River flows about 325 miles ( 523 km ) further west to the Pacific Ocean near Astoria , Oregon . </P>
where does the columbia river meet the snake river
where does the columbia river meet the snake river
Burbank , Washington
Burbank , Washington