2014 Map of Loony Hollow

About this map

Loony Hollow defines the drainage patterns of this corner of eastern Montana, where the boundary between Prairie County and Custer County bisects a landscape of complex coulees and intermittent watercourses. The local hydrology is marked by several catchment features, including Horse Reservoir and Archdale Reservoir, which serve as vital water sources in this arid environment. The map details the winding paths of O'Fallon Creek and Whitney Creek, alongside the smaller Ash Creek and Dry Creek. While much of the terrain is characterized by these natural drainage systems, the presence of Shoemaker and the lone Ismay Road in the northeast indicate the sparse but intentional infrastructure of the region. This 2014 survey documents the enduring physical character of the Montana plains, highlighting the significance of water management and topography in a territory defined by its creek beds.