Arizona

Glen Canyon Dam - a large dam built in 1964 on the Colorado River in Arizona

Lake Mead - the largest reservoir in the United States; located in southeastern Nevada and northwestern Arizona and formed by the Hoover Dam on the Colorado River; the center of a recreational area

Lake Powell - the second largest reservoir in the United States; located in southern Utah and north central Arizona and formed by the Glen Canyon Dam on the Colorado River

southwestern United States, Southwest - the southwestern region of the United States generally including New Mexico, Arizona, Texas, Nevada, California, and sometimes Utah and Colorado

Grand Canyon National Park - a national park in Arizona including the mile deep canyon of the Colorado River which shows geologic features and fossil plants and animals

Petrified Forest National Park - a national park in Arizona having the world's largest collection of petrified coniferous trees

U.S.A., United States, United States of America, US, USA, America, the States, U.S. - North American republic containing 50 states - 48 conterminous states in North America plus Alaska in northwest North America and the Hawaiian Islands in the Pacific Ocean; achieved independence in 1776

Flagstaff - a town in north central Arizona; site of an important observatory

Mesa - a city in Arizona just to the east of Phoenix; originally a suburb of Phoenix

Nogales - a town in Arizona on the Mexican border opposite Nogales, Mexico

capital of Arizona, Phoenix - the state capital and largest city located in south central Arizona; situated in a former desert that has become a prosperous agricultural area thanks to irrigation

Prescott - a town in central Arizona

Sun City - a residential suburb of Phoenix

Tucson - a city in southeastern Arizona ringed by mountain ranges; long known as a winter and health resort but the population shift from industrial states to the Sunbelt resulted in rapid growth late in the 20th century

Yuma - a town in southwestern Arizona on the Colorado River and the California border

Chihuahuan Desert - a desert in western Texas, New Mexico, Arizona, and northern Mexico

Gila Desert - a desert area in southern Arizona

Mohave Desert, Mojave Desert, Mohave, Mojave - a desert area in southern California and western Arizona

Painted Desert - a desert on a high plateau in northeastern Arizona

Sonoran Desert - a desert in southwestern Arizona

Cataract Canyon - a tributary of the Grand Canyon

Colorado River, Colorado - an important river in the southwestern United States; rises in the Rocky Mountains of northern Colorado and flows southwest through Utah into Arizona (where it flows through the Grand Canyon) and then southward through the southern tip of Nevada, then forming the border between California and Arizona and finally into Mexico where it empties into the Gulf of California; the main source of water in the southwestern United States

Colorado Plateau - a large plateau to the south and west of the Rocky Mountains; abuts mountains on the north and east and ends in an escarpment overlooking lowlands to the south and west; the Grand Canyon is carved out of the southwestern corner

Gila, Gila River - a river that rises in western New Mexico and flows westward through southern Arizona to become a tributary of the Colorado River

Grand Canyon - the enormous gorge of the Colorado River in northern Arizona

reptile genus - a genus of reptiles

Colubridae, family Colubridae - nonvenomous snakes; about two-thirds of all living species

Arizona elegans, glossy snake - nocturnal burrowing snake of western United States with shiny tan scales