View of cracked ground in an area which used to be underwater at the Jaguari dam, in Vargem, 100km from Sao Paulo, during a drought affecting Sao Paulo state, Brazil on August 19, 2014. The Jaguari dam is part of the Sao Paulo's Cantareira system of dams, which supplies 45% of the metropolitan region of Sao Paulo --20 million people-- and is now at historic low.   AFP PHOTO / NELSON ALMEIDA        (Photo credit should read NELSON ALMEIDA/AFP/Getty Images)