2020 Map of Loony Hollow

About this map

Loony Hollow and the surrounding drainage basins of eastern Montana define this landscape along the Prairie County and Custer County border. The map documents a sparsely settled ranching and grazing region where water management is critical, as evidenced by the placement of Archdale Reservoir and Horse Reservoir among the rolling draws. The intermittent flows of O'Fallon Creek and Whitney Creek carve the terrain, while the settlement of Shoemaker and the track of Ismay Road provide the primary human coordinates in this expansive territory. This modern survey captures the persistence of traditional land divisions, showing how early township and range lines like t10n r54e continue to organize the remote topography of the northern plains.