View of cracked earth in an area that used to be underwater in the Jaguari dam, in Vargem, 100km from Sao Paulo. during a drought affecting Sao Paulo state, 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.