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1957 Map of Bottle Pass

Name: 1957 Topographic Map of Bottle Pass
Creator: U.S. Geological Survey
Published: 1967
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1967

About this map

Arapaho National Forest dominates this high-altitude terrain, where complex water management systems intersect with the Divide's natural drainages. This 1957 field survey reveals the intricate infrastructure of the Big Six Ditch and various aqueducts that redirected alpine runoff across the ridges. The eastern edge of the quadrangle features the Fraser Experimental Sta, a significant site for forestry and watershed research established decades before this mapping.

High-altitude landmarks such as Ptarmigan Peak and Byers Peak define the southern skyline, while the eponymous Bottle Pass and Bottle Peak sit at the center of a network of creek systems including Tipperary Creek and St Louis Creek. For researchers of the Colorado backcountry, the map preserves the exact routes of the Keyser Creek Trail and Byers Creek Trail as they existed before modern recreational expansion, including the secluded Lake Evelyn.