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2020 Map of Lisbon Valley

Name: 2020 Topographic Map of Lisbon Valley
Creator: U.S. Geological Survey
Published: 2020
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2020

About this map

Big Indian Rock serves as a prominent landmark in this corner of San Juan County, overlooking the broad expanse of Big Indian Valley. The landscape is defined by the significant drainage systems of East Coyote Wash and Bullhorn Wash, which carve through the high desert terrain. Local geography is further marked by the transition from Mid Mesa down into the depths of Lisbon Canyon and Spiller Canyon.

Water sources are vital and specific in this arid region, as seen with Lisbon Spring and Huntley Spring. A network of service roads, including W Lisbon Spu and Co Rd 359, provides access to Lower Lisbon Valley and Little Valley, illustrating the modern management of this remote territory. The presence of Three Step Hill at the southern edge suggests a tiered ascent typical of the region's geological character.