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1966 Map of Boulder

Name: 1966 Topographic Map of Boulder
Creator: U.S. Geological Survey
Published: 1968
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1968

About this map

Boulder emerges in the 1960s as a city defined by its steep transition from the plains to the Front Range, anchored by the sprawling University of Colorado campus and a dense network of neighborhood schools like Columbine Sch and Highland Sch. The urban grid, featuring prominent thoroughfares such as Broadway and Arapahoe Ave, terminates abruptly against the protected slopes of Boulder Mountain Park and the Roosevelt National Forest.

Evidence of the area's prospecting history remains visible in the western gulches, where the Poorman Mine and Red Sign Mine sit near small settlements like Sunshine and Orodell. To the north, the Left-hand Valley Reservoir and numerous irrigation canals like the Farmers Ditch illustrate the complex water management required to support both the growing city and the surrounding agricultural landscape.