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The San Juan Basin is a geographical region in the Four Corners region of the Southwestern United States; its main portion covers around 4,600 square miles, encompassing much of northwestern New Mexico, northeastern Arizona, and parts of Colorado and Utah. The region is defined both by its marked aridity and by a rugged topography of plains and valleys interspersed by buttes, canyons and mesas. Its most striking features include Chaco Canyon (northwestern New Mexico, between Farmington and Santa Fe) and Chacra Mesa. The San Juan Basin also has uplands that exceed elevations of 9,800 feet. As the region gently increases in elevation in a southeasterly direction, the Basin's streams flow to the northwest, eventually draining into the Colorado River.[1]
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- Fagan, B (2005), Chaco Canyon: Archaeologists Explore the Lives of an Ancient Society, Oxford University Press, ISBN 0-19-517043-1.
