2020 Map of Black Sea Reservoir

About this map

McGinnis Cr and W Blacktail Cr define the drainage patterns of this Rosebud County landscape, illustrating a remote stretch of Montana high plains north of the Yellowstone River. The terrain is marked by the complex dissection of the northern plains, where intermittent watercourses have carved intricate coulees and ridges. Towards the southern edge of the survey, Cohagen Rd provides the primary transit corridor through this sparsely populated region. The map meticulously records the Public Land Survey System grid across townships t12n r35e, t11n r35e, and t10n r35e, showing the intersection of range lines that historically governed homesteading and ranching boundaries in this part of the state.