2014 Map of Hay Basin South

About this map

Hay Basin and the wide expanse of Comanche Flat dominate this section of Yellowstone County as it appeared in the early 21st century. The landscape is defined by a sparse but systematic grid of rural roads, including Van Sky Rd, Oswald Rd, and the east-west corridor of 21 Mile Rd. These routes follow the section lines of the Public Land Survey System, illustrating how land division has shaped the modern Montana prairie. In the southeastern reaches, the terrain descends toward the S Fork Crooked Cr, where the contour lines tighten, indicating the breaks and coulees that drain the basin. This survey provides a clear look at the large-scale agricultural and ranching parcels that characterize this region north of the Yellowstone River, where place names like Birkley Rd and Allen Rd often reflect long-standing local families and property boundaries.