Deadliest Dam Failures in History

Banqiao Dam China 1975 killed 171,000 after Typhoon Nina. Vajont Dam Italy 1963 killed 1,917 from landslide wave. St.

Francis Dam USA 1928 killed 431. Johnstown Flood USA 1889 killed 2,209. Mosul Dam Iraq remains at risk.

Dam safety engineering has improved dramatically but risks remain..