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1951 Map of Black Rock Gap, 1991 Print
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1951 Map of Black Rock Gap

USGS Topo · Published 1991

About this map

The Sweetwater River meanders across this high-desert landscape in Fremont County, creating a distinctive hydrological pattern alongside the Soda Lakes. This 1951 field-checked survey reveals an area defined by its arid drainage systems and prominent geological formations, such as Jamerman Rock and the namesake Black Rock Gap. The terrain is marked by broad expanses like Agate Flats and the essential water sources found at Black Rock Spring and Diamond Springs Draw. The map records a series of irrigation efforts with several segments of Ditch clearly marked along the river's path, suggesting the importance of water management in this Wyoming interior. For those interested in the historical geography of the Missouri River Basin development, this sheet provides a detailed record of the natural landmarks and early infrastructure that shaped the region during the mid-twentieth century.

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Map Details

Date Portrayed1951
Date Published1991
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:24,000
Physical Dimensions21.7 x 26.8 inches

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Source Details

SourceU.S. Geological Survey
CopyrightPublic Domain