The 1931 Central China floods or the Central China floods of 1931 were a series of floods that occurred in the Republic of China . The floods are generally considered among the deadliest natural disasters ever recorded , and almost certainly the deadliest of the 20th century ( when pandemics and famines are discounted ) . Estimates of the total death toll range from 145,000 to between 3.7 million and 4 million . The Yangtze again flooded in 1935 , causing great loss of life
1931 Central China floods
1931 China floods
Yangtze