Loading map...

2013 Map of Spencer South

Name: 2013 Topographic Map of Spencer South
Creator: U.S. Geological Survey
Published: 2013
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2013

About this map

Spencer stands at the northern edge of this high-altitude landscape, where the flatlands of the Snake River Plain begin their transition into the mountainous terrain of the Targhee National Forest. The map documents a critical transportation corridor along Beaver Cr, where Interstate 15 and Old Highway 91 parallel the historic rail route passing through the settlement of Highbridge. This alignment follows the natural contours of the land, navigating between prominent volcanic and tectonic features such as The Crater and China Point.

Water management and drainage define the eastern reaches, where Threemile Reservoir sits tucked against the forest boundary and a network of seasonal streams, including Threemile Cr and Rattlesnake Cr, descend from the higher elevations. This 2013 survey provides a clear view of the complex land ownership patterns typical of the region, marked by the intersection of forest service land, private holdings, and remote access routes like Sky Line Rd and Idmon Rd.