1950 Map of Frederick

About this map

Coal mining and irrigation define the landscape of the Tri-Towns region of Weld County in this mid-century survey. The area is dominated by the industrial footprint of the Union Pacific railroad and a dense concentration of sub-surface resources, evidenced by the Boulder Valley Mine, Baum Mine, and Eagle Mine. At State Coal Mine Junction, the rail infrastructure supported the heavy output of these operations, while the surrounding residential settlements of Frederick, Dacono, and Firestone housed the local workforce. Beyond the industrial corridors, the terrain transitions into an intricate network of water management features. A system of ditches, including the Sullivan Ditch and Bull Ditch, divert water across the plains, supporting the agricultural life centered around landmarks like the Mount View School and Pleasant Valley School. This record captures a moment when the legacy of Colorado's coal era remained physically central to the local geography.