Middle Fork Boise River

The Middle Fork Boise River rises in the rugged heights of Idaho’s Sawtooth Mountains and flows roughly fifty miles through deeply carved, forested canyons marked by steep rocky walls and nearly four thousand feet of vertical relief before joining the North Fork to form the main Boise River. Its clear, cold mountain waters reward anglers with native trout and whitefish, while kayakers and rafters navigate moderate stretches, hikers explore remote trails through the valleys, and campers find quiet riverside spots amid the pristine highland scenery.