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2021 Map of Thornton

Name: 2021 Topographic Map of Thornton
Creator: U.S. Geological Survey
Published: 2021
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2021

About this map

Thornton sits near the crossing of Thornton Rd and Co Rd 160, serving as a central point in this high plains landscape defined by the expansive Thunder Basin National Grassland. The terrain is shaped by a complex network of ephemeral and perennial drainages, including Dumbrill Cr, Wind Cr, and the Green River. Significant water management is evident through features like the Thornton Reservoir and Luman Reservoir, which support life and agriculture in this semi-arid region.

Relief is provided by distinct landforms such as Shale Hill and the elevated Pine Ridge to the east. The presence of Willow Tree Springs suggests vital natural water sources used long before modern roads like Haul Rd or Pine Ridge Rd were established. This map documents a region where ranching infrastructure and public lands intersect, with numerous "TBNG" (Thunder Basin National Grassland) parcels scattered across the township and range grid.