Nightly News Films: Colorado River and Western Megadrought

The Colorado River is a 1,400-mile, life-sustaining artery for the American West – supplying water for seven states while generating hydroelectric power for millions. But experts tell NBC News’ Steve Patterson that the river’s power is shrinking. Steve gets exclusive access inside the Glen Canyon Dam as the crisis leads to historic water rationing, and looks into the consequences at the Grand Canyon and beyond.