2024 Map of The Arch

About this map

The Little Belt Mountains define the southern reaches of this landscape, where the northern boundary of the Lewis & Clark National Forest transitions into the high drainage basins of Judith Basin County. This terrain is characterized by a complex network of coulees and creeks that have carved into the mountain foothills, creating prominent landmarks like The Arch. The map detail shows how seasonal and perennial water, such as Old Geyser Creek and McCarthy Creek, dictates the placement of early ranch roads and access routes across the townships of T16N and T17N.