A lock keeper crosses a torrential river to open the sluice flood gates and reduce the threat of a dam bursting downstream in Zijin County, Guangdong Province, on June 9.

Unusually heavy rains have struck south China since the beginning of the month, killing at least 76, with 13 still missing as of June 14.

The worst flood-hit areas included Jiangxi, Fujian and Guangdong provinces, as well as the Guangxi Zhuang Autonomous Region.

More than 13.56 million people were affected by natural disasters triggered by continuous rain, according to the Ministry of Civil Affairs, adding that more than 788,000 people were displaced.The floods have caused an overall economic loss of more than 4.73 billion yuan ($606 million).