The 1931 China floods can be considered the deadliest natural disasters. 52 million people were affected by the floods. You can not even tally up the amount of damage that happened that occurred in central China. You also can not tally up the amount of deaths that are caused by his storm. Over 4 million died because of the flood and this is a loose approximation. The weather leading up to the flood was unusual. They had a severe drought from 1928-1930 and than an abnormally cold winter with heavy snow. In the summer of they experienced 7 cyclones, the normal amount is two per year.
Then the dams and dykes were abused and weak because the government was disorganized from constant attempts of evasion from the Japanese and internally there was not a established government. So the weak dykes and dams were not able to contain the sudden increase in water levels and broke. All of central China was flooded. The inundations were constant and wiped out all of China's crops. Many people died because of disease and famine then the inundations itself. The situation was so bad that people resorted to cannibalism for food. It took many years for China to recover from this horrific event. China didn't build a complete dam until 2009. This was because the rivers kept breaking the dams and dykes. The 1931 China floods show us we need to be prepared for disasters and we need to keep track of our environment.