2011 Map of Porcupine Coulee

About this map

Porcupine Coulee winds through this section of Phillips County, Montana, carving through a landscape defined by an intricate network of drainage channels and remote ranch roads. In the early 21st century, the area remains dominated by its natural topography, where water sources like Split Shack Spring were vital for local livestock and land management. The map details the convergence of several major draws, including Rattlesnake Coulee and Poplar Coulee, which eventually feed toward larger regional watersheds. Travel across this high plains terrain is facilitated by unpaved routes such as Frenchman Creek Rd and Helmers Rd, reflecting the sparse but functional infrastructure required to navigate the coulee-scarred prairie. This survey offers a clear view of the hydrological patterns and named landmarks that orient residents and land users in a vast, open environment.