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1957 Map of Lyons

Name: 1957 Topographic Map of Lyons
Creator: U.S. Geological Survey
Published: 1961
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1961

About this map

Lyons sits at the confluence of the North and South St Vrain Creeks, serving as a critical gateway where the plains meet the foothills. In the late 1950s, the local economy is clearly defined by resource extraction and water management, evidenced by numerous Quarries dotting the slopes of Steamboat Mountain and the intricate network of irrigation channels like the Lake Ditch and Toll Gate Ditch further south.

The rugged terrain of the Roosevelt National Forest dominates the western half of the map, featuring prominent landmarks such as Coffintop Mountain and Fairview Peak. To the south, the settlement of Altona and the Altona Grange provide a glimpse into the agricultural life along Lefthand Creek. The presence of the Longmont Reservoir and several gaging stations underscores the regional importance of these water systems for the downstream communities.