Rising waters across central and eastern China have left over 140 people dead or missing, and floods have affected almost 24 million since the start of July, according to the ministry of emergency management.
Local authorities said the action was taken to ensure the safety of people living nearby.
Chinese media said the released water was being channelled into two downstream storage ponds.
Beijing,
Chinese authorities blew up part of a dam in eastern Anhui province to relieve flood pressure, local media reported, as heavy rains continue to swell rivers across parts of the country.
