''For other uses, see Colorado River (disambiguation).

The Colorado River is a river in the southwestern United States and northwestern Mexico, approximately 1,450 mi (2,330 km) long, draining a part of the arid regions on the western slope of the Rocky Mountains. The Colorado River also drains very small portions of the southeastern California deserts, parts of southern Nevada (as drainages to Lake Mead, including Las Vegas), and nearly all of the state of Arizona.

Rivers of Arizona | Rivers of California | Rivers of Colorado | Rivers of Mexico | Rivers of Nevada | Rivers of Utah | Grand Canyon