After months of stalemate, glimmers of hope have emerged for consensus on a new plan to manage the shrinking Colorado River.

The clock is ticking on the Colorado River. The seven states that use its water are nearing a 2026 deadline to come up with ...

After months of stalemate, glimmers of hope have emerged for consensus on a new plan to manage the shrinking Colorado River.

California and six other states that use water from the Colorado River are nearing a 2026 deadline to come up with new rules for sharing shrinking supplies.

It's a place both beloved and hated after its creation three generations ago — by damming the Colorado River — obliterated a transcendent natural landscape with water hundreds of feet high.

Government officials cleared out a warmwater pool on the Colorado River that had become a breeding ground for pesky invasive ...

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.

A wildfire along the Grand Canyon’s North Rim grew rapidly over the weekend and destroyed a historic lodge and visitors ...

Is Arizona's most beautiful place an iconic red rock butte, a blue-green waterfall or an otherworldly cave formation? Vote in our stunning views poll.

The California Western Railroad, also known as the Skunk Train, took the tenth and final spot in a USA Today list of the ...

No big government infrastructure project made an imprint on the landscape and economy of the West more than the US Bureau of ...