Arizona
Once a part of Mexico, Arizona now contains some of America's largest cities and lies within two principal physiographic regions of the United States. Learn about the Colorado Plateau and cites like Phoenix. See more »
what's inside: geography of the southwestern united states
The geography of the Southwestern United States is rugged and diverse. Discover all of the states within the southwest, including Arizona, New Mexico, Oklahoma and Texas.
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New Mexico
While largely desert, New Mexico occupies part of four major physical regions of the United States: the Rocky Mountains, the Great Plains, the Colorado Plateau, and the Basin and Range. See more »
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Oklahoma
The geography of Oklahoma is dominated by rolling plains and the Ozark Mountains. Explore the landmarks, geographical features and cities of Oklahoma in this section. See more »
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Texas
Texas is the second largest state. Learn about the major cities, landmarks and geographical features in the state known as the Lone Star state. See more »
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Geography of Clovis
Clovis, New Mexico, the seat of Curry County. It is 95 miles (153 km) southwest of Amarillo, Texas, at an altitude of 4,218 feet (1,286 m).
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Geography of San Antonio
San Antonio, Texas, the seat of Bexar County. It lies in south-central Texas on gently rolling plains, some 600 to 800 feet (180 to 240 m) above sea level.
Geography of Houston
Houston, Texas, the seat of Harris County. It is the nation's fourth largest cities.
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