In the 20th century, this river's diversion reduced the output of Shoshone Falls.
Base-jumpers can jump without a permit off the Perrine Bridge over this river, which irrigates Magic Valley. Both the "Big" and "Little" Lost Streams are tributaries of this river, whose plain contains Inferno Cone and Craters of the Moon National Monument. The Bonneville flood occurred 14,000 years ago along this river. This river's namesake fine-spotted cutthroat trout can be found in Grand (*) Teton National Park, through which it flows. In the 20th century, this river's diversion reduced the output of Shoshone Falls. Evel Knievel failed to use the Skycycle X-2 to jump across this river's namesake canyon. This river, whose largest tributary is the Salmon River, forms part of the IdahoÂ–Oregon border and carved out Hells Canyon. For 10 points, name this largest tributary of the Columbia River.
Base-jumpers can jump without a permit off the Perrine Bridge over this river, which irrigates Magic Valley.
Snake River [or Lewis River; accept Shoshone River until read]