Largest U.S. reservoir at historic low Lake Mead, the largest reservoir in the U.S. and crucial to the water supply of 25 million people, has sunk to its lowest level ever, highlighting the extreme drought gripping the U.S. West Reservoir is at 30% capacity LAKE MEAD WATER LEVEL 1950s: Drought 1963: Filling of Lake Powell Drought: 1,125ft Jun 9, 2021: 1,071ft (327m) record low Max: 1,232ft Lake elevation (feet)* 1,180 1,120 1,060 1940 1960 1980 2000 2020 Major cities dependent on water from Lake Mead *Surface elevation above sea level NEVADA Las Vegas Hoover Dam CALIFORNIA Los Angeles San Diego PACIFIC OCEAN Colorado River UTAH Grand Canyon Lake Powell Lake Mead ARIZONA Phoenix Tucson U.S. MEXICO 50km 30 miles UNITED STATES Sources: U.S. Bureau of Reclamation, Reuters Pictures: Newscom, Getty Images © GRAPHIC NEWS