Dikes of Shenjiakeng Reservoir, a rainwater pooling dam in eastern Zhejiang Province's Zhoushan City, collapsed this morning.
Ten people died and 27 injured in the flooding that followed the dam burst, state-run Xinhua news agency reported.
A water conservancy expert team was rushed by the provincial government to the site to help carry out emergency repairs of the dam.
Zhejiang has been lashed by downpours over the last few days after typhoon Haikui hit the region before moving into neighbouring Anhui Province.
