1931 China floods 1931 China floods The 1931 China floods or the 1931 Yangtze-Huai River floods were a series of devastating floods that occurred in the Republic of China. They were some of the deadliest floods in history, and together formed one of the most lethal natural disasters of the 20th century, excluding pandemics and famines. Estimates of the total death toll range from 422,499 to between 3.7 million and 4 million. From 1928 to 1930, China was afflicted by a long drought. The subsequent winter of 1930 was particularly harsh, creating large deposits of snow and ice in mountainous areas. Early in
Los Angeles flood of 1938 structures spared parts of Los Angeles County from destruction, while Orange and Riverside Counties experienced more damage. The flood of 1938 is considered a 50-year flood. It caused $78 million of damage ($ in dollars), making it one of the costliest natural disasters in Los Angeles' history. In response to the floods, the U.S. Army Corps of Engineers and other agencies began to channelize local streams in concrete, and built many new flood control dams and debris basins. These works have been instrumental in protecting Southern California from subsequent flooding events, such as in 1969 and 2005, which both had