1951 Map of Black Rock Gap

About this map

The Sweetwater River snakes through the southern reaches of this Fremont County landscape, defining the local hydrology alongside the notable Soda Lakes. This 1951 field-checked survey reveals an arid high-desert environment where water sources like Black Rock Spring and the seasonal flow of Diamond Springs Draw were critical for livestock and travelers. The topographic relief is punctuated by geologic breaks such as Black Rock Gap and Quaking Asp Gap, which served as natural corridors through the varied terrain. Evidence of early irrigation efforts and water management is visible in the network of canals, including a designated Abandoned Ditch and active Ditch segments near the river. Landmarks like Jamerman Rock and the wide expanse of Agate Flats provide specific points of reference for those researching the land use and natural history of central Wyoming.