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1955 Map of Arminto

Name: 1955 Topographic Map of Arminto
Creator: U.S. Geological Survey
Published: 1976
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1976

About this map

The high plains of central Wyoming are defined here by a complex web of drainage basins and early petroleum development. The landscape is dominated by the sprawling Teapot Dome Naval Petroleum Reserve No 3, an area of significant historical and political weight. This energy-rich corridor is further marked by the Burlington Northern railroad, which traces a path through small railroad settlements like Arminto and Lysite before cutting across the Ralston Flats.

To the north, the Big Horn Mountains rise above a series of river forks, including the South Fork Powder River and Middle Fork Powder River. Geologic landmarks such as the jagged Teapot Rock and the eroded badlands of Hells Half Acre provide distinctive orientation points across the arid terrain. The map also captures an extensive network of ranch-critical infrastructure, from the Dinty Moore Reservoir to numerous windmills and reservoirs scattered across the Sand Hills.