As continuous rainfall affects a vast expanse of areas across China, a total of 329 rivers reported water levels exceeding flood control alert levels as of 8 am Friday, said Chen Min, vice-minister of water resources.

"This year's flood season is characterized by regional and sequential occurrences of droughts and flood disasters," Chen told a news conference, adding that extreme heavy downpours have led to disasters such as mountain floods, landslides and urban waterlogging while the country is entering the main flood season.

He stressed that the ministry will spare no effort in striving to prevent casualties, dam collapses and breaches in vital embankments, as well as minimize the impact on critical infrastructure.