To critics, Glen Canyon Dam was one of the U.S.'s biggest environmental mistakes. But it generates electricity for about 5 million people in seven states.

With Lake Powell sitting a shade less than 35 feet above the level at which Glen Canyon Dam’s generators would be turned off, the agency that markets the dam’s hydropower to 5 million people ...

These actions should prevent Lake Powell from falling so low in the near future that Glen Canyon Dam’s power-generating turbines would have to be shut off. But many experts agree the fix is only ...

A Flagstaff-based hub for regional science -- and for the protection of the Grand Canyon and the Colorado River -- could be under threat from President Donald Trump’s proposed cuts to the ...