Thousands of Australians have been evacuated from their homes after severe flooding as a major storm battered the country's east coast.Three days of floodwaters headed down the country's wine-rich Hunter Valley, north of Sydney, leaving towns cut off and farms isolated like islands.Eight people have drowned in the floods, which are the worst in 30 years and the area has been declared a natural disaster by the New South Wales state government.Another person was killed when a tree fell on him, bringing the storm's death toll to nine.Army soldiers have been constructing sand bag levees to try and hold back the flooded Hunter River, which had swollen into a wide, brown swirling torrent of water heading down the valley.© Independent Television News Limited 2007. All rights reserved.