Charting how we use water, one map at a time. The area's groundwater basin is one of more than 40 other aquifers across the state that have seen dropping water levels since 1993.

Arizona has diverse voices at its water negotiating table, and that’s a good thing. We get better policy when broad swaths of water users — including tribes and others that in past years have ...

Arizona’s aquifers and overall water table are still very dry, putting pressure on much of the state’s groundwater resources. Lake Powell is only 24% full and Lake Mead is only 27% full.

Environmentalists say Arizona water map hides areas with concentrated "forever chemicals." By Morgan Loew and Cody Lillich Published : Sep. 8, 2023 at 5:39 PM MST ...

Gov. Katie Hobbs, who has made Arizona’s water supply a focus of her first months in office, said the groundwater decision would not derail any projects that have already been approved and would ...

Arizona is expected to face significant cuts to its Colorado River water allocation after 2026. The state Legislature will need to approve any federal plan for dealing with the cuts.

TUCSON, Ariz.— The Center for Biological Diversity called on the Arizona Department of Water Resources today to reduce groundwater use in the Upper San Pedro River Basin in order to accommodate newly ...