The Colorado River Basin which supplies water to seven U.S. states is facing "severe water shortages," scientists warn.

The Colorado River basin has lost a Lake Mead’s worth of water in the last 20 years — and scientists say we’re passing a "critical point" where pumping groundwater will become too expensive.

After a promising step in talks about the future of the Colorado River, the seven states that use its water appear to be hitting more hurdles.

The study found that groundwater losses in the Colorado River basin were 2.4 times greater than the amount of water lost from the surfaces of Lake Powell, Lake Mead, and a number of other smaller ...

If Arizona’s Colorado River water allocation was cut to zero, “we could burn through the available groundwater in 50 years,” Famiglietti said. “We’re talking about decades. That’s scary.

The 1,450-mile Colorado River provides drinking water and agricultural irrigation to about 40 million people across seven U.S. states, 30 tribal nations and two states in Mexico.

The Colorado River Basin faces the possibility of two big reservoir crises at once. By the end of next year, the worst-case forecast has Lake Powell falling to low enough levels to halt ...