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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 Platte River, the Arkansas River, the Rio Grande River and the Colorado River all have their headwaters in Colorado. [2] Colorado's use of these waters has an effect on users downstream. Prior to the creation of the Territory of Colorado in 1861, few laws existed that pertained specifically to the issue of water rights in the area.
On November 20, 2012, the International Boundary and Water Commission of the United States and Mexico signed an agreement termed "Minute 319," which updated the Law of the River to address how the 1,500,000 acre-feet (1.9 km 3) of Colorado River water that Mexico receives every year would be affected by surplus or drought conditions. [47]
A new global analysis finds U.S. states along the Colorado River are under extremely high water stress. The region is grappling with how to reduce water use.
The Colorado River provides water to seven states from Wyoming to Southern California, as well as 30 tribal nations and northern Mexico. The river has long been overallocated, and reservoir levels ...
The Colorado River, which provides water for about 15% of our country’s agriculture, is shrinking, and the current agreement that divvies up the water usage ends in 2026.
The river's first diversion is here at its headwater. The Grand Ditch redirects water from the Never Summer Mountains, which would have flowed into the Colorado River, to instead flow across the divide through La Poudre Pass to irrigate farmland to the east. Near the source of the Colorado River in Rocky Mountain National Park, Colorado
California water agencies say they have reduced water use by more than 1.2 million acre-feet over the last two years, decreasing the state’s usage of Colorado River supplies to the lowest levels ...