2024 Map of Black John Coulee

About this map

Big Dry Creek winds through this expanse of Garfield County, defining a landscape shaped by the intricate drainage systems of eastern Montana. This 2024 survey captures a terrain dominated by deep coulees and seasonal forks, reflecting the ranching and agricultural rhythms of the High Plains. The namesake Black John Coulee cuts across the northern half of the map, joining other watercourses like Nelson Coulee and Allen Coulee that feed into the larger riparian network. Farther south, the meandering path of Langs Fork and the presence of John Coulee highlight the characteristic erosion patterns of the Missouri River basin. The map illustrates the sparsely populated nature of the region, where land management and natural geography are the primary features of the cadastral grid.