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

When state wildlife officials first found signs of invasive zebra mussels in a reservoir in western Colorado several years ...

A 32-year-old Milpitas man and a second man drowned in the Colorado River during a pontoon boat excursion in Arizona, ...

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

When zebra mussels were first discovered in the Great Lakes in 1988, I was not particularly concerned about the impacts they would have on Lake Erie. As a 2-year-old, I was just beginning to ...

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

But “normal” years aren’t the norm anymore — here or anywhere in the 250,000-square-mile drainage that supplies the 1,450-mile Colorado River. A river that has long been overallocated and ...

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 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 ...