2024 Map of Black Sea Reservoir

About this map

The high plains of Rosebud County are defined by a network of drainage systems that carve through the Montana landscape. Water is the primary architect of this terrain, with Mcginnis Creek and West Blacktail Creek serving as the principal features of the drainage basin. These seasonal or ephemeral watercourses represent the critical landmarks in an otherwise sparse interior. The lone arterial route, Cohagen Rd, traverses the southern portion of the quadrangle, indicating the historic transit patterns for ranching and local commerce in this part of the state. Surveyed within township boundaries including T12N R35E and T10N R35E, the map illustrates the persistence of the Public Land Survey System in organizing this rural expanse, where topography and natural waterways dictate the layout of roads and ranch access.