Arizona's Grand Canyon might steal the spotlight, but the state's lesser-known canyons are just as worth visiting (while featuring fewer crowds).

On Monday the Colorado Basin Roundtable had a meeting to discuss the state of the Colorado River. The Roundtable discussed ...

The U.S. Bureau of Reclamation should start planning to modify the Glen Canyon Dam, which plugs the Colorado to form Lake ...

The South Rim Fire at Black Canyon of the Gunnison National Park continues to burn weeks after it started from lightning ...

With a reddish tint from sediment carried over long miles, the mighty river that carved the Grand Canyon has been known by ...

Research Grand Canyon landslide-dam and paleolake triggered by the Meteor Crater impact at 56 ka by a team from the ...

Millions of people visit the Grand Canyon each year. But this year will be different for one portion of the national park. A wildfire has shuttered the North Rim, a place where visitors could ...

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

A new study suggests a meteor strike that created Arizona’s Meteor Crater 56,000 years ago may have triggered a massive ...

The Bureau of Reclamation and the National Park Service announced completion of modifications to a warmwater slough in the ...