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Map of the Colorado River drainage basin. The principal tributaries of the Colorado River of North America are the Gila River, the San Juan River, the Green River, and the Gunnison River.
The San Juan River is a major tributary of the Colorado River in the Southwestern United States, providing the chief drainage for the Four Corners region of Colorado, New Mexico, Utah, and Arizona.
Known for its dramatic canyons, whitewater rapids, and eleven U.S. National Parks, the Colorado River and its tributaries are a vital source of water for 40 million people. [4] An extensive system of dams, reservoirs, and aqueducts divert almost its entire flow for agricultural irrigation and urban water supply.
The principal tributaries of the Colorado River of North America are the Gila River, the San Juan River, the Green River, and the Gunnison River.
With the help of Indian scouts, they acquired enough information to map the river and its main tributaries. Mormons settled the Great Basin of Utah in 1847, moved quickly into tributary valleys of the Colorado in Utah and Arizona, and acquired knowledge that contributed to later scientific surveys.
The chief tributary of the Colorado River is the Green River, a 730-mile-long artery that begins in the Wind River Mountains in Wyoming, winds through Colorado and Utah before joining the Colorado River in Canyonlands National Park in southern Utah.
Today, nearly 40 million people in the seven Colorado River Basin States—Arizona, California, Colorado, Nevada, New Mexico, Utah, and Wyoming—rely on the Colorado River and its tributaries for some, if not all, of their municipal needs.
In this edition, we discuss seven other major tributaries in the Colorado River basin: the Gunnison, San Juan, Virgin, Bill Williams, Verde, Black, and Salt Rivers. The water quality and quantity, flora and fauna, and sediment and organic loads of each of these tributaries uniquely alter the mainstem Colorado River and the habitat it provides.
The Colorado River’s tributaries include some of Colorado’s most well-known local rivers, like the Yampa, White, Eagle, Roaring Fork, Gunnison, Animas and Dolores. Some of the river’s major tributaries that pass through other states include the Green, San Juan, Little Colorado, Gila and Virgin.
This map includes the main river, its tributaries, and its drainage basin which is the land that drains into the river or its tributaries if there is too much rainwater to be absorbed by the ground. Map of the Colorado River Basin (Shannon1).