Gallatin River

Montana Fish Wildlife and Parks describes the Gallatin River as about twelve miles long from its origin at the confluence of the West and East Gallatin rivers to Three Forks, Montana, where it joins the Jefferson and Madison rivers to form the Missouri River. The river flows through a narrow valley consisting of agricultural and grazing lands at elevations less than 5,000 feet. The banks are primarily undercuts, and long, deep pools provide much of the fish cover.