2020 Map of Crowley Dam

About this map

Crowley Dam sits at the center of this sparse landscape in the northern Missouri River breaks region of Montana. The terrain is defined by a network of drainage channels including Alkali Cr and Howard Cr, which carve through the high plains. This map documents a transitional zone where the southern boundary of Petroleum County meets Musselshell County, a region characterized by its expansive ranching tracts and open range. Survey lines for Township 12 North and Range 27 East establish the primary grid across this portion of the Big Snowy Mountains foothills. Local access is maintained through gravel routes like Flatwillow Rd and Kelley Rd, which follow the natural contours of the land. Geographic features such as Jim Coulee and Howard Coulee illustrate the erosional patterns of the central Montana benchlands, providing critical landmarks in a territory with few permanent structures.