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

As Colorado River states race to finish a deal, water users face a resource altered by drought and climate change.

For the first time in well over a year, a clear path exists for completion of Arizona’s share of a three-state drought plan for the Colorado River. The plan would step up already-approved ...

Emerald Cave, also known as Emerald Cove, shimmers with luminous green light. Here's the best time to visit Emerald Cave and how to get there.

Officials have indicated that Lake Powell, the nation's second-largest reservoir by capacity, could potentially see water levels drop low enough to halt hydropower generation by December 2026.