Murray Darling Basin

GANMAIN, NSW, AUSTRALIA - FEBRUARY 13: Sheep graze in a field in the early morning, February 13, 2008 near Ganmain, New South Wales, Australia. The Murray-Darling Basin has been plagued with severe drought since the late 1990s and Farmers have had to reduce their numbers of livestock due to lack of water and feed. (Photo by Amy Toensing/Getty Images)