WThis is a list of dams on the Colorado River system of the southwestern United States and northwestern Mexico. The Colorado runs 1,450 mi (2,330 km) from the Rocky Mountains to the Gulf of California, draining parts of seven U.S. states and two Mexican states. The river system is one of the most heavily developed in the world, with fifteen dams on the main stem of the Colorado 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.
WDillon Reservoir, sometimes referred to as Lake Dillon, is a large fresh water reservoir located in Summit County, Colorado, United States, south of I-70 and bordered by the towns of Frisco, Silverthorne, and Dillon. It is a reservoir for the city of Denver, and its waters are under the control of Denver Water. Popular ski areas are close to the reservoir, including Copper Mountain, Keystone, Arapahoe Basin, and Breckenridge.
WGreen Mountain Reservoir lies at the northern end of Summit County, Colorado along the Blue River. The Green Mountain Dam was built between 1938 and 1942 by the United States Bureau of Reclamation. The reservoir and its dam store water to benefit Colorado's Western Slope. Created by President Roosevelt as part of the Colorado-Big Thompson Project in 1937, Green Mountain was the first facility to be constructed. This is because it represents a great compromise that made the C-BT project possible: it compensates the Western Slope for water diverted to cities in Northern Colorado from Lake Granby further upstream on the Colorado River. Water from Green Mountain Dam is released either over the spillway, through the dam, or through the hydroelectric powerplant at the dam's base. The Green Mountain Power Plant has the capacity to generate up to 21,000 kilowatts, using two generators. Combined with the other five Federal power plants on the C-BT, enough electricity is produced annually to power almost 60,000 American homes.
WThe earthen dam is a project of the United States Bureau of Reclamation and was completed in 1963, at 284 feet (87 m) high and 1,360 feet (410 m) long at its crest. The dam impounds the Florida River for flood control and irrigation water storage, operated by the local Florida Water Conservancy District. 120 kW of hydroelectric power is generated here.
WMcPhee Reservoir is located in Montezuma County, Colorado, United States. It was constructed and is operated by the United States Bureau of Reclamation as part of the Dolores Project, and dams the Dolores River to furnish irrigation water for Montezuma and Dolores counties and the Ute Mountain Ute Indian Reservation.
WNavajo Dam is a dam on the San Juan River, a tributary of the Colorado River, in northwestern New Mexico in the United States. The 402-foot (123 m) high earthen dam is situated in the foothills of the San Juan Mountains about 44 miles (71 km) upstream and east of Farmington, New Mexico. It was built by the U.S. Bureau of Reclamation (Reclamation) in the 1960s to provide flood control, irrigation, domestic and industrial water supply, and storage for droughts. A small hydroelectric power plant was added in the 1980s.
WThe New Waddell Dam is an embankment dam on the Agua Fria River in Maricopa County, Arizona, 35 miles (56 km) northwest of Phoenix. It serves as part of the Central Arizona Project (CAP) while also providing water for the Maricopa Water District. The dam creates Lake Pleasant with water from the Agua Fria and also the CAP aqueduct. In addition, it affords flood protection, hydroelectric power production and recreational opportunities. Construction on the dam began in 1985 and ended in 1994. Its reservoir submerged the Old Waddell Dam which was completed in 1927 after decades of planning.
WRidgway Dam is an earthen dam on the Uncompahgre River which impounds Ridgway Reservoir, located about 6 miles north of the town of Ridgway in Ouray County, Colorado. The dam is 332 ft (101 m) high and 2,465 ft (751 m) long, with a capacity of 84,410 acre⋅ft (104,120,000 m3) of water.
WRifle Gap Dam is a dam in Garfield County, Colorado, about five and a half miles north of Rifle.
WRuedi Reservoir is a reservoir on the Western Slope of the Continental Divide on the Fryingpan River. It sits about 15 miles (24 km) upstream of the town of Basalt, Colorado, near Aspen. The reservoir is located within the White River National Forest, and straddles the county line between Pitkin County and Eagle County.
WVallecito Dam is a dam in La Plata County, Colorado, a few miles northeast of Durango.