SSC MTS EXAM

Detailed explanation-1: -The likely process of bypassing Glen Canyon Dam would involve lowering reservoir levels to what is known as the ‘dead pool’ level (237 feet) and drilling bypass tunnels around the base of the dam, allowing the mobilization of any remaining water and sediment.

Detailed explanation-2: -When the dam was completed, and the flow of the Colorado River was stifled, sediments traveling along with the river were blocked by the dam and began to build up in what would become the Lake Powell reservoir.

Detailed explanation-3: -In less than forty years, the cold, clear water from Glen Canyon Dam has done untold damage, causing the extirpation of rare native fish and other wildlife in the Grand Canyon. With shrinking populations, these endangered species face a grim future unless the natural flows of the Colorado River are restored.

Detailed explanation-4: -The reduction of releases from Lake Powell from 7.48 maf to 7.00 maf in water year 2022 resulted in a reduced release volume of 0.480 maf that normally would have been released from Glen Canyon Dam to Lake Mead as part of the 7.48 maf annual release volume, consistent with operations under the 2007 Interim Guidelines.