2011 Map of Fourmile Creek

About this map

Foster Creek and its many tributaries, including the North Fork Foster Creek and South Fork Foster Creek, dominate this eastern Montana landscape in Custer County. This drainage system illustrates the typical high-plains water management of the early 21st century, centered on named infrastructure like Nefsy Number 1 Dam, Nefsy Number 2 Dam, and Nefsy Number 4 Dam. These features suggest a ranching-focused economy where seasonal water flow from Fourmile Creek and Ranch Creek is carefully directed. The only significant named thoroughfare, Foster Creek Rd, follows the terrain of the creek valleys, providing the primary access through this sparsely populated stretch of the state. Other watercourses like Lay Creek and Stony Creek define the periphery, highlighting the importance of every drainage in this dry environment.