Glen Canyon Reservoir: The Colorado River’s descent into ‘dead pool’
A long-standing drought in the American Southwest is getting worse by the day, threatening reservoirs and groundwater supplies. And the first sign of “serious damage” could be a whirlpool, according to the operators of the nation’s second-largest reservoir, Lake Powell, reports the Washington Post. Lake Powell is already a quarter of its size and a drop in the water level of another 38 feet down the concrete face of the 710-foot Glenn Canyon Dam would put the surface of the reservoir close to the tops of eight underwater openings that allow river water to pass through the hydroelectric dam.