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Colorado, state, United States

(Encyclopedia) CE5 ColoradoColoradokŏlərădˈə, –rădˈō, –räˈdō [key], state, W central United States, one of the Rocky Mt. states. It is bordered by Wyoming (N), Nebraska (N, E), Kansas (E),…

Gunnison

(Encyclopedia) Gunnison, river, 180 mi (290 km) long, rising in W central Colo. and flowing SW, W, and NW to the Colorado River at Grand Junction. It flows through magnificent canyons, notably the…

Navajo Dam

(Encyclopedia) Navajo Dam, 402 ft (123 m) high and 3,648 ft (1,112 m) long, NW N.Mex., on the San Juan River, near the Colo. line; built 1958–63 by the U.S. Bureau of Reclamation. The dam, a major…

cliff dwellers

(Encyclopedia) cliff dwellers, Ancestral Pueblo people, sometimes called Anasazi, who were builders of the ancient cliff dwellings found in the canyons and on the mesas of the U.S. Southwest,…

All-American Canal

(Encyclopedia) All-American Canal, 80 mi (129 km) long, SE Calif.; part of the federal irrigation system of the Hoover Dam. Built between 1934 and 1940 across the Colorado Desert, the canal is…

Fort Collins

(Encyclopedia) Fort Collins, city (2020 pop. 169,810), seat of Larimer co., N Colo., on the Cache la Poudre River, at the foot of the Rocky Mts., inc.…

Longhorn Cavern

(Encyclopedia) Longhorn Cavern, limestone cave, central Tex., at Burnet. On the northern edge of the Edwards Plateau, the cave (explored length c.8 mi/13 km) lies beneath a triangular ridge rising…

Missouri River basin project

(Encyclopedia) Missouri River basin project, comprehensive plan authorized in 1944 for the coordinated development of water resources of the Missouri River and its tributaries, draining an area of c.…

Painted Desert

(Encyclopedia) Painted Desert, badlands on the northeastern bank of the Little Colorado River, NE Ariz., stretching c.200 mi (320 km) SE from the Grand Canyon; includes Petrified Forest National Park…

Powell, John Wesley

(Encyclopedia) Powell, John Wesley, 1834–1902, American geologist and ethnologist, b. Mt. Morris (now part of New York City). The family moved to Illinois, where Powell joined the Natural History…