The East Gallatin is formed by the confluence of Rocky and Bridger Creeks just outside the city limits of Bozeman. From that point to its confluence with the Main Gallatin it flows through agricultural land in the Gallatin Valley and holds some beautiful brown and rainbow trout that wait under overhanging brush and undercut banks. Unlike the West Gallatin, which is more of a crystal-clear mountain river, the East Gallatin is often a bit turbid from late fall through spring, only coming into good fishable shape towards mid summer. When it is good it is ver good however. Providing some of the most consistent PMD, trico and beatis hatches of any body of water in the area. This in turn can produce fantastic dry fly opportunities for those who know when to be there.