Plumbing issues at Glen Canyon Dam, which holds back the second-largest reservoir in the U.S., are causing concerns about future water delivery to southwestern states.

Decades into a megadrought, proponents of mothballing the 710-foot dam say now is the time to drastically rethink management of the depleted Colorado River.

"That would allow operation of the dam from dead pool all the way down to river level, allowing for full operational flexibility of Glen Canyon Dam at every level,” Balken said.

As Gus Levy traipses across the 710-foot-tall Glen Canyon Dam, there's a bounce in his step as he details the complicated workings of this structure built in 1960.

A recent memo published by the US Bureau of Reclamation raises concerns about the future of water management in the Colorado River basin. Glen Canyon Dam, substation (left) and bridge (in front of ...

The federal government must rapidly prepare plans to redesign Glen Canyon Dam’s plumbing to keep the Colorado River flowing through the Grand Canyon as the water levels behind the dam continue ...

Plumbing problems at the dam holding back the second-largest reservoir in the U.S. are spurring concerns about future water delivery issues to Southwestern states supplied by the Colorado River.

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.

River mile -12 slough of the Colorado River between Glen Canyon Dam and Lees Ferry in Glen Canyon National Recreation Area.

A judge has sided with a Western Slope water district in a dispute with Denver Water over a problem dam in Grand County. In ...

Horseshoe Bend, Glen Canyon, Lake Powell, Page My Arizona adventure continued up north – starting from Tucson, through Sedona, past Tuba City, and finally in Page. My most northern Arizona stop was ...

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.