The US Southwest on our terms is Arizona, New Mexico, Oklahoma, and Texas. There are other ways that region can be defined, but this is our cut, and the data is based on these four states.
The geography of the Southwest region is mainly made up of four features: the Mojave, Sonoran, and Chihuahuan Deserts, and the Colorado Plateau. Next to this, there are other geographical features, including a portion of the Great Basin Desert.
The deserts dominate the southern and western reaches of the area, while the plateau (which is largely made up of high desert) is the main feature north of the Mogollon Rim. The two major rivers of the region are the Colorado River, running in the northern and western areas, and the Rio Grande, running in the east, north to south.
It is worth noting that the Chihuahuan Desert spreads across the southeastern portion of the region, covering from southeastern Arizona, across southern New Mexico, and into Texas. While it is the second largest desert in the US, only a third of the desert is within the country, with the rest being in Mexico.
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