Buoys that read 'No Boats' lay on cracked dry earth where water once was at Lake Mead, Nevada on July 23, 2022. - Water levels in Lake Mead are at the lowest level since April 1937 when the reservoir was being filled for the first time, according to NASA, with satellite images this week showing a dramatic drop in water levels. Almost the entire American west is in the grip of a major drought, which has resulted in reduced water flow to rivers and dramatically lowered the levels of key reservoirs including Lake Mead and Lake Powell. (Photo by Frederic J. BROWN / AFP)