The Portneuf River joins 
The Portneuf River joins this river at a facility of the Minidoka Irrigation Project, and the Ice Harbor Lock and Dam is located on this river, which receives the Henrys Fork earlier in its course. This river receives the Weiser and Malheur slightly before receiving its biggest tributary, the Salmon River. A catastrophic spillover onto its plain created the Crane, Swan, and Shoshone Falls. For 10 points, name this major tributary of the Columbia River that flows out of Hells Canyon near the edge of Idaho, and whose source lies in Yellowstone National Park.
The Portneuf River joins this river at a facility of the Minidoka Irrigation Project, and the Ice Harbor Lock and Dam is located on this river, which receives the Henrys Fork earlier in its course.
{Snake} River