2020 Map of Threemile Buttes

About this map

Threemile Buttes anchor a complex system of drainage and high-country divides within the Custer National Forest in Powder River County. This landscape is defined by its water sources, with numerous named springs such as Watt Spring, Doonan Spring, and Old Faithful Spring providing critical points of interest across the territory. The map illustrates a network of gulches and draws that separate prominent landmarks like the Pumpkin-Otter Divide and the Three & Ten Mile Divide. This region, characterized by its ranching and forest history, features essential water management sites including Ridenour Reservoir and Bowers Reservoir. Transportation is represented by a handful of established routes like Lemonade Road and Fifteen Mile Rd, which navigate the terrain alongside seasonal waterways like Tenmile Cr and the Middle Fork Tenmile Creek.