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1942 Map of Louisville

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

USGS Topo · Published 1942

About this map

The high plains of Boulder County, Colorado, are meticulously detailed in this early 1940s survey, showing a landscape defined by an intricate network of irrigation and mining-related water management. The town of Louisville serves as the primary population center, featuring its High Sch and street grid just prior to the post-war suburban boom. To the west, the settlements of Marshall and Marshallville sit near Marshall Lake, while the community of Superior is positioned further south along the Coal Creek corridor.

The map reveals a complex infrastructure of ditches and flumes, such as the South Boulder Diversion Canal, which feeds into numerous storage sites like the Great Western Reservoir and Base Line Reservoir. The elevated terrain of Davidson Mesa and the plateau of Rocky Flats dictate the flow of the regional water system. Rural landmarks like the Sacred Heart Ch and the Shamrock Sch provide specific points of interest for genealogists tracing family locations in this coal-mining and agricultural district.