1967 Map of Tongue River Dam

About this map

Tongue River Reservoir dominates the southeastern corner of this Big Horn and Rosebud County landscape, held in check by the Tongue River Dam. Surveyed in the late 1960s, the terrain is defined by a dense network of drainages that feed the Tongue River, including Leaf Rock Creek and the meandering Post Creek. The topography reveals the complex erosional patterns of the Montana plains, punctuated by features like Barber Draw and various forks of North Fork Fourmile Creek. Evidence of resource exploration and hydrological management is present through the marking of a Drill Hole, a Gravel Pit, and a Gaging Sta near the reservoir. The map also clearly delineates the political boundary where Big Horn Co Rosebud Co meet, following the rugged high ground between watersheds.