A family wades through flood waters while evacuating Baseera, a village in the Muzaffargarh district of Pakistan's Punjab province on August 10, 2010. The floods, triggered by unusually heavy monsoon rain over the upper Indus river basin that started nearly two weeks ago, have ploughed a swathe of destruction more than 1,000 km (600 miles) long from northern Pakistan to the south, killing more than 1,600 people. REUTERS/Adrees Latif (PAKISTAN - Tags: DISASTER ENVIRONMENT)