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1970 Map of Alma

Name: 1970 Topographic Map of Alma
Creator: U.S. Geological Survey
Published: 1973
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1973

About this map

The high alpine mining district of the Continental Divide is meticulously detailed in this 1970 field-checked survey. Centered on Alma, the map documents an era of significant mineral extraction and water management. High-elevation settlements and mining camps are identified, including the locations of Dudley and Quartzville, along with Park City. These communities supported massive operations like the Sweet Home Mine, Buckskin Joe Mine, and Dolly Varden Mine.

Transport and industrial infrastructure appear throughout the peaks, from the Aerial Tramway and Mascot Tunnel to the remnants of an Old Railroad Grade. Water engineering is prominent via the Aqueduct system and the Montgomery Reservoir, which captures the headwaters of the Middle Fork South Platte River. Genealogists will find the locations of the Buckskin and Park City cemeteries, while landmarks such as Hoosier Pass and the towering Mount Lincoln provide geographical context to this industrial landscape.