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1951 Map of Black Rock Gap

Name: 1951 Topographic Map of Black Rock Gap
Creator: U.S. Geological Survey
Published: 1984
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1984

About this map

The Granite Mountains dominate this central Wyoming landscape, creating a jagged horizon above the expansive Agate Flats. This 1951 field-checked survey reveals a complex hydrological network where the Sweetwater River meanders through the southern portion of the quadrangle, flanked by numerous irrigation channels and a notable Ditch. Further north, the presence of the Soda Lakes indicates the alkaline nature of the basins in this arid region.

Navigational landmarks like Black Rock Gap and Quaking Asp Gap highlight the traditional routes through the high terrain. The map captures the infrastructure of the early 1950s grazing economy, evidenced by a lone Windmill and various water sources such as Black Rock Spring and Diamond Springs Draw. These features, along with names like Hen Sage Draw, document the remote character of Fremont County during the mid-century development of the Missouri River Basin.