WWF Abstract

Stretching from southwestern Wyoming to the northeastern tip of Baja California in Mexico, this ecoregion covers a portion of southeastern Nevada, parts of western and northern Arizona, the northwestern corner of New Mexico, most of eastern Utah, and western Colorado. The ecoregion primarily lies within the physical province of the Colorado Basin and includes portions of the Wyoming Basin and the Sonoran Desert, making it one of the most arid ecoregions in North America.
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Biome:Xeric Freshwaters and Endorheic Basins
Countries:Mexico, United States
Area:125,229,152 acres (50,678,440 hectares)
Species:All  Endangered  Invasive
Ecoregions provided by World Wide Fund For Nature (WWF). WildFinder: Online database of species distributions, ver. 01.06 WWF WildFINDER