A man walks on a dried-up reservoir in Liuyang County of Changsha, central China's Hunan Province on August 6, 2007. Sustained high temperature and lack of rainfall has caused the worst drought in 50 years in the provincial capital, threatening water supplies of 162,700 residents in 111 towns and villages.

Local villagers dig wells for irrigating dried-up farmland in Liuyang County of Changsha, central China's Hunan Province on August 6, 2007.

A woman squats over a dried-up reservoir in Liuyang County of Changsha, central China's Hunan Province on August 6, 2007.

A local resident shows large swathes of dried-up farmland in Liuyang County of Changsha, central China's Hunan Province on August 6, 2007.

(Xinhua News Agency August 7, 2007)