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2017 Map of Lisbon Gap

Name: 2017 Topographic Map of Lisbon Gap
Creator: U.S. Geological Survey
Published: 2017
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2017

About this map

Lisbon Gap serves as a prominent landmark in this high-desert landscape where the border of San Juan County, Utah, meets Montrose and San Miguel Counties in Colorado. The terrain is defined by a series of dramatic incisions and elevated plateaus, notably Mid Mesa and the expansive Island Mesa. This 2017 survey details a network of canyons that have shaped the region's geography and historical movement, including the narrow corridor of Lisbon Canyon and the evocatively named Horsethief Canyon.

Water drainage patterns are meticulously recorded, showing the paths of Spring Canyon and East Coyote Wash as they navigate the breaks in the mesas. Man-made infrastructure is represented by rural connectors such as Island Mesa Rd and E Lisbon Valley Rd, which provide access to this complex topography. From the heights of Moosey Point to the depths of Greasewood Canyon, the map illustrates the geological character of the Four Corners borderlands.