2012 Map of Fourmile

About this map

The settlement of Fourmile serves as the focal point for this survey of Custer County, situated near a complex network of drainage basins and distinct geological formations. The landscape is defined by its vertical variety, ranging from the prominent heights of Castle Rock and Twin Sisters to the deep cuts of Griffis Canyon and Layton Canyon. Water management is evident through the presence of several stock ponds and catchments, including Ventling Reservoir and Ward Reservoir, alongside natural sources like Carroll Creek Spring and Spar Spring. The transition from recreational use to local infrastructure is marked by the proximity of the Comanche Park Campground and Harrymill Picnic Area to the Custer County Airport in the northeast. A dense network of forest roads and namesake paths, such as Bebbington and Stagg Rd, reveals the continued importance of land access for both transit and resource management in this region of South Dakota.