2011 Map of Marsh Coulee

About this map

The Bighorn River snakes through the northwestern corner of this landscape, its path defining the fertile Big Ox Bottom. This 2011 survey of the Yellowstone County region captures a terrain of deep drainage systems and named coulees that reveal the area's natural history and land-use patterns. Local routes like Ponessa Rd and Tullock Rd provide access through the complex network of ravines, including the centrally located Marsh Coulee and its distinct North Fork and South Fork branches. To the south, the curiously named Fountain of Youth Coulee and Mission Coulee offer specific points of interest for researchers tracking local place names and ranching history. The eastern portion of the map is dominated by the upper reaches of several watercourses, such as Tullock Creek and West Lightning Creek, illustrating the intricate drainage that shapes this part of Montana.