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2016 Map of Lyons

Name: 2016 Topographic Map of Lyons
Creator: U.S. Geological Survey
Published: 2016
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2016

About this map

Lyons serves as the gateway to the foothills, where the confluence of the north and south forks of the Saint Vrain Creek meets a sophisticated network of early water management infrastructure. The landscape is defined by the Saint Vrain Supply Tunnel and various irrigation channels like Highland Ditch, Toll Gate Ditch, and Table Mountain Ditch, which redirect snowmelt for the communities to the east. Further into the mountains, the Roosevelt National Forest protects major water stores at Button Rock Reservoir and Longmont Reservoir.

Evidence of historical mining persists at the Golden Age site, while the rugged topography is punctuated by distinctive peaks such as Steamboat Mtn and Coffintop Mtn. To the south, the settlement of Altona sits near Allens Lake, marking a transition from the narrow gulches like Plumely Canyon to the broader flats. This 2016 survey documents the enduring relationship between mountain geology and the vital water systems that sustain the Front Range.