Although the headwaters of the Colorado River begin high in the mountains of Colorado, the river itself journeys 1,450 miles ...

The mountains that feed the Colorado River with snowmelt are strikingly dry, with many ranges holding less than 50% of their ...

In response to the expiring rules for sharing the Colorado River, the authors of a new memo say states need to take shared ...

Ongoing drought continues to strain the water supply from the Colorado River, but some Arizona agencies are finding new ways ...

Environmental groups filed a petition calling on the Trump administration to strictly enforce a regulation that requires ‘beneficial’ use of Colorado River water. The measure, which could be ...

The U.S. Bureau of Reclamation says Arizona will likely continue to take cuts in its Colorado River supply next year. The ...

Hydrologists say that hotter temperatures have been drying out soils and vegetation in the west, leading to less water ...