A diagram showing where two water outlet points and various water level marks at Glen Canyon Dam (Utah Rivers Council) ...

Newly discovered damage to part of the dam holding back America's second-largest reservoir has people who rely on the Colorado River worried about their ability to get the water they need.

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.

Damage to Glen Canyon Dam reveals vulnerabilities of the entire Colorado River system Recently discovered issues could affect how Upper Basin states deliver water to Lower Basin states.

Glen Canyon Dam began its life with an explosion. Congress authorized the dam’s construction on this day in 1956, and about seven months later, then-president Dwight D. Eisenhower pressed a ...

The Colorado River's decline threatens hydropower at Glen Canyon Dam. Now, officials are looking at retooling the dam to deal with low water levels.

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.

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 ...

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.

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.