2017 Map of Lower Seymour Lake

About this map

Lower Seymour Lake sits at the heart of this high-elevation landscape, where the headwaters of numerous creeks converge near the boundary of Deer Lodge National Forest and Beaverhead National Forest. This 2017 survey details a region defined by its complex drainage network, featuring Seymour Creek and La Marche Creek as they descend toward the Big Hole River. A notable piece of water management infrastructure, the Bacon Ditch, cuts across the terrain, illustrating the historical and ongoing efforts to divert water through these mountains. The map also traces established access routes like Seymour Creek Road and LaMarche Creek Road, which provide the primary entry points into these timbered lands. From the seasonal flows of Minnie Creek to the narrow passage of Bear Trap Gulch, the sheet offers a precise look at the hydrology of the Continental Divide's eastern slopes.