2014 Map of The Arch

About this map

Lewis & Clark National Forest encompasses the southern half of this landscape, where the terrain transitions into the high elevations of Peterson Mtn and the geologic formation known as The Arch. The northern portion of the quadrangle is defined by a complex drainage network, where the waters of Old Geyser Creek and McCarthy Creek have carved deep incisions into the earth. These erosional patterns are most evident in the named landforms of Crow Coulee, Chambers Coulee, and Jackson Coulee, which dictate the local topography.