This week on "Sunday Morning" (July 18)

Host: Jane Pauley

COVER STORY: What the megadrought means to the American WestFarmers dependent upon water from river systems in the American West are seeing massive cuts in their supply, as reservoirs drop to their lowest levels due to the worst drought to hit the region in 1,200 years. Correspondent Ben Tracy talks with scientists who say there is no quick or easy recovery, and with a California farmer whose livelihood is in danger. For more info: