As drought shrivels Lake Powell, millions face power crisis

With water levels falling lower than thought possible' at Glen Canyon Dam, energy production could halt as soon as July 2023

Bob Martin, the deputy power manager at the Glen Canyon Dam, gestures at the band of whitish, chalky residue running along the steep canyon walls towering above the Colorado River.

That's where the water level used to be," says Martin. It's fallen lower than even the lowest end of the scale thought possible when the dam was constructed."