For millions of years, water flowing through the Colorado River shaped the geography of the West, carving out features like ...

Federal officials are expected to project next year's water shortage on Aug. 15. Arizona doesn't expect to lose more until at ...

The Colorado River from Glenwood Springs to the Utah border is now considered positive for zebra mussels, an invasive species ...

Not as much water flows into the river as people are entitled to take out of it. A new idea might change that, but ...

A bridge connecting the small western Arizona community of Cibola to California was destroyed by a wildfire earlier this ...

Arizona officials are celebrating the passage of new groundwater legislation, but setting their sights on upcoming Colorado ...

All members of Congress representing Colorado, Democrats and Republicans alike, are asking President Donald Trump to release ...

Those looking to try river surfing can find tasty waves at Pueblo Whitewater Park, Salida Whitewater Park, River Run in ...

The Colorado River system supplies tens of millions of people across the West with water to drink, shower, and work, and it irrigates around 5 million acres of farmland.

The suspect, a sheriff's sergeant, was arrested on suspicion of drunken boating. The 38-year-old victim is survived by a wife ...

The Colorado River transports approximately 9 million tons of dissolved salt each year, according to a 2009 U.S. Geological Survey report on salinization in the Upper Colorado River. In the river and ...