List of dams in the Colorado River system

This is a list of dams on the Colorado River system of the southwestern United States and northwestern Mexico.

The river system is one of the most heavily developed in the world, with fifteen dams on the main stem of the Colorado [citation needed] and hundreds more on tributaries.

Collectively, dams in the Colorado River basin can hold four to five times the river's annual flow, generating hydroelectricity and supplying irrigation and municipal water for over 35 million people.

Dams on tributaries are listed if they are taller than 250 ft (76 m), store more than 50,000 acre⋅ft (62,000 dam3), or are otherwise historically notable.

The Upper Basin include such tributary systems as the Green, Gunnison and San Juan.

Map showing locations of major dams in the Colorado River basin. Lee's Ferry , which separates the Upper and Lower Basins, is located just downriver from Glen Canyon Dam .