Answer: snakeriver

AnswerCrossword Clue
SNAKERIVERColumbia tributary that forms part of the Idaho-Oregon border
SNAKERIVERPart of Oregon's border
SNAKERIVERKnievel once tried to jump across it
SNAKERIVERIt runs through southern Idaho
SNAKERIVERSite of a Knievel jump
SNAKERIVERIt starts in Yellowstone National Park
SNAKERIVERCarver of Hells Canyon