A dike along China' Lake Gaoyou is breached during major floods in the Yangtze Valley. The floods covered an area approximately the size of New York, New Jersey, and Connecticut combined. All together the floods lasted from June to the end of August and flooded areas of central and eastern China including densely populated cities like Wuhan and Nanjing.
The death toll of the floods ranges between 422,000 - 4,000,000, depending on the source. The 1931 China flood is known as one of the world's deadliest disasters. More