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1986 Map of Prospect Mountains

Name: 1986 Topographic Map of Prospect Mountains
Creator: U.S. Geological Survey
Published: 1986
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1986

About this map

The Continental Divide crests across this high-elevation landscape in the mid-1980s, marking the hydrological spine of the region. The map captures a complex network of water management and natural drainage at the foot of the Prospect Mountains. Significant man-made features like the Elkhorn Ditch and Prospect Reservoir illustrate the efforts to divert and store water in this arid environment, supporting the livestock or agricultural needs of the high plains.

Settlement is sparse, anchored by Elkhorn Junction, while the topography is defined by significant drainages such as Mitchell Slough and Little Sandy Creek. The presence of Lander Creek in the northeast and Alkali Draw to the south suggests the seasonal and mineral-rich nature of the local hydrology. This survey provides a precise record of the land use and natural boundaries during a period of modern ranching and resource management in Sublette County.