Natural disasters in China water-diversification projects to channel excess water from the Chang Jiang to arid northern regions. China had 3 of the top 10 world's most fatal earthquakes, including the 1556 Shaanxi earthquake that reportedly killed more than 830,000 people, listed as the deadliest earthquakes of all times and the third deadliest natural disaster. The 1976 Tangshan earthquake, with death toll estimated to be between 242,419 and 779,000, is ranked the third deadliest earthquake of all times, and 8th deadliest natural disaster. The 1920 Haiyuan earthquake killed 200,000 to 240,000, ranked the fourth deadliest earthquake and 9th deadliest of all natural disasters. The
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