XI'AN, July 29 (Xinhua) -- Downpours and flooding have left 11 people dead and 15 missing in northwest China's Shaanxi province, local authorities said Sunday.

Three rounds of powerful rainstorms have buffeted the city of Yulin since July 15, with precipitation surpassing 270 mm in some townships in the worst rainstorms in 200 years, according to Yulin's flood control and drought relief headquarters.

The headquarters said the storm has destroyed many homes and raised the water level in the Yellow River over the danger level. The economic and social impacts of the storm are being updated.