They estimated that annual groundwater losses in the Colorado River Basin have averaged more than 1.2 million acre-feet — about four times larger than the amount of water the Las Vegas area is ...

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.

Listen Now 11min 13sec Ross D. Franklin/AP The Colorado River in the upper River Basin is pictured in Lees Ferry, Ariz., on May 29, 2021.

The Colorado River Basin’s groundwater supplies are dwindling, thanks to a combination of both natural events and human pumping activities, a new study has found. The critical Western system has ...

Utah will give farmers an incentive to leave fields fallow — then hopes to get "credit" for the saved water, in negotiations about the Colorado River.

Lead negotiators from the Colorado River’s Upper Basin states expressed a dual sense of uncertainty and urgency on Tuesday, as a deadline to determine the fate of the entire system looms near… ...

They estimated that annual groundwater losses in the Colorado River Basin have averaged more than 1.2 million acre-feet — about four times larger than the amount of water the Las Vegas area is ...