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1942 Map of Eldorado Springs

Name: 1942 Topographic Map of Eldorado Springs
Creator: U.S. Geological Survey
Published: 1942
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1942

About this map

Eldorado Springs serves as a focal point for this 1942 survey, situated where the Front Range meets the plains. The landscape is defined by the steep elevation changes of Boulder Mountain and Crescent Mountain, carved by watercourses like South Boulder Creek and Coal Creek. To the west, the Denver and Salt Lake railroad winds through the terrain, connecting isolated outposts and mountain communities.

Settlement patterns show a mix of ranching and mining-era remnants, from the Kossler Ranch near Kossler Lake to the already Pine Grove Sch (abandoned). Small clusters of activity are visible at Magnolia, Plainview, and Crescent, while the Roosevelt National Forest boundary marks the transition into protected wildlands. These details, including the presence of the Green Mountain Cemetery and the Coal Creek Store, offer a look at the rural infrastructure of Boulder and Jefferson counties before mid-century expansion.