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Map showing the Upper and Lower Colorado River Basin, and adjacent areas supplied by Colorado River water. The Colorado River Basin consists of 246,000 square miles (640,000 km 2), making it the seventh largest drainage basin in North America. [1] About 238,600 square miles (618,000 km 2), or 97 percent of the basin, is in the United States. [40]
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 ...
Near Parker Dam are the first two major diversions of the lower Colorado: the Colorado River Aqueduct, which travels 240 miles (390 km) west to Los Angeles and San Diego, California; and the Central Arizona Project, which sends water 340 miles (550 km) east towards Phoenix and Tucson, Arizona.
Prior to the construction of major dams along its route, the Colorado River fed one of the largest desert estuaries in the world. Spread across the northernmost end of the Gulf of California, the Colorado River delta's vast riparian , freshwater, brackish, and tidal wetlands once covered 7,810 km 2 (1,930,000 acres) and supported a large ...
A visual journey along the Colorado River, from the headwaters to Mexico, that shows the environmental toll on the depleting resource.
Before the dam could be built, the Colorado River needed to be diverted away from the construction site. To accomplish this, four diversion tunnels were driven through the canyon walls, two on the Nevada side and two on the Arizona side. These tunnels were 56 ft (17 m) in diameter. [51]
Parker Dam holds back the Colorado River between Arizona and California and creates Lake Havasu. From the reservoir, water is pumped to the Colorado River Aqueduct and flows to Southern California ...
Hostility and mistrust are at the heart of the inability of California and six other states to reach an agreement on the Colorado River. Column: The fight over the Colorado River is a 100-year-old ...