2017 Map of Johnson Dam

About this map

Johnson Dam sits at the heart of this drainage-carved landscape in Phillips County, serving as a focal point for the surrounding water systems. The terrain is defined by a series of distinct coulees, including Guston Coulee and Moss Coulee, which channel runoff into the larger creek networks. Significant water bodies like Beaver Cr, Sevenmile Cr, and Cottonwood Cr wind through the township and range divisions, illustrating the vital role of seasonal and permanent water management in the northern plains. Local access is maintained through rural routes such as Harb Rd and Beaver Creek Rd, which traverse the undulating topography. This survey captures a moment of managed prairie hydrology, where family-named and descriptive landmarks like Windmill Coulee and Pickhandle Coulee reflect the ranching and livestock heritage of this Montana interior.