Fall River is a pristine waterway that begins in the mountainous Madison and Pitchstone Plateau in the southwest corner of Yellowstone National Park and flows approximately 64 miles through Wyoming and Idaho before joining the Henry's Fork of the Snake River near Warm River, Idaho. This scenic river transitions from alpine headwaters through meadows and canyon sections, featuring distinctive areas like Rainbow Falls and Terraced Falls. With crystal-clear, cold waters and a variety of habitat types, Fall River offers excellent fishing opportunities for several trout species throughout its course. The river's character changes dramatically along its length, from swift rapids and waterfalls in its upper reaches to more manageable flows downstream, providing diverse fishing experiences for anglers of all skill levels.