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The analysis was released after the federal government announced Tuesday that a snowy winter and rising reservoir levels had slightly eased the severity of the water shortage on the Colorado River ...
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]
Those are the river’s two main reservoirs that transfer and store Colorado River water, produce hydropower and serve as barometers of its health. The 2007 rules determine when some states face ...
The Bureau of Reclamation described the Colorado River's status based on projected water levels at Lake Powell and Lake Mead, key reservoirs that serve as barometers of the river's health.
The water year begins October 1 to coincide with seasonal Rocky Mountain snowfall, which produces most of the Colorado River's flow. [27] [28] A comparison of Lake Mead water levels from July 2000 to July 2015. Lake Mead's water level rebounded a few feet by October 2015 and avoided triggering the drought restrictions.
However, water years 2012 and 2013 were, respectively, the third and fourth-lowest runoff years recorded on the Colorado River. By April 9, 2014, the lake level had fallen to 3,574.31 feet (1,089.45 m), largely erasing the gains made in 2011. [9] Colorado River levels returned to normal during water years 2014 and 2015 (pushing the lake to ...
Officials, farmers and tribes are bracing for more difficult negotiations on how to divvy up the Colorado River in the long term.
The Central Arizona Project, a 336-mile-long water delivery system, brings water from the Colorado River to Arizona's most populous counties and wasn't completed until the 1990s. The Southern ...