The Chihuahuan Desert region is approximately 800
miles long and 250 miles wide. It stretches from the
Rio Grande Valley in southern New Mexico to the
north of Mexico City and is surrounded by Mexico’s
two great mountain ranges – the Sierra Madre
Oriental and the Sierra Madre Occidental.
Two rivers, the Rio Grande and its major tributary the
Rio Conchos, provide the main source of freshwater
for millions of people, and a multitude of wildlife
species that make the Chihuahuan Desert the third
richest desert in biodiversity, and one of the 20 most
important ecoregions in the world.
The rivers are the lifeblood of the desert. The balance
of life here depends on them.
Follow this link :