It's rare that La Nina happens three years in a row, but it's quite possible for 2022-2023. That's not good news for the Colorado River Basin states that are grappling with drought.

The Interior Department announced reductions in Colorado River entitlements today, and Arizona was hit the hardest, losing 21% of its entitlement. The upper basin states and California saw no...

A looming decision about who will lose Colorado River water is likely to be painful, hurting agriculture the most.

Against the backdrop of a megadrought, California is also facing groundwater challenges. The State's Department of Water Resources has developed an interactive map that helps members of the public...

August saw above-average rainfall in parts of the southwest, according to the U.S. Drought Monitor, and the trend brought by monsoon weather is expected to continue.

The statement of claimant locator map is a new tool launched by the Arizona Department of Water Resources for public use.