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1962 Map of Mack

Name: 1962 Topographic Map of Mack
Creator: U.S. Geological Survey
Published: 1975
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1975

About this map

The Colorado River carves a deep path through the southern half of this landscape, creating the dramatic walls of Horsethief Canyon and Bull Canyon. In the north, the agricultural and industrial character of the Grand Valley is evident through an extensive network of irrigation features, including the Kiefer Extension Grand Valley Canal and the Grand Valley Canal. Small settlements like Mack and Loma serve as anchors along the Denver and Rio Grande Western railroad line.

Industrial activity is concentrated near the settlement of Gilsonite, which features a refinery and an evaporation pond. The terrain transitions sharply from the irrigated flats below Golden Hill to the complex drainage systems of Rattlesnake Canyon and Pollock Canyon in the south. This 1970s revision highlights the persistence of regional water management and the extraction-based economy that defined this portion of the Colorado-Utah borderlands.