2011 Map of Mission Coulee

About this map

Rotten Grass Creek winds through this expanse of Big Horn County, defining a landscape shaped by intermittent watercourses and high plains topography. The drainage patterns are dominated by deep-set channels like Cottonwood Coulee and Eychaner Coulee, which highlight the erosive nature of the local geography. Human presence in this section of the Montana countryside is sparse, centered on the Siemion Ranch in the northeastern corner, illustrating the ranching economy that sustains this region. Further south, the terrain rises toward Rattlesnake Butte, overlooking the broad expanse of Cooper Basin. This survey provides a precise look at the land use and natural landmarks in a quiet part of the state where traditional agriculture meets the natural contours of Cooper Basin Coulee and Dry Soap Creek.