Banqiao Dam Collapse. 3000 other dams failed in communist China between 1949 and 1980. Banqiao Dam Collapse China.
However on Aug 5 1975 a typhoon collided with a cold front over Henan and dropped the areas average yearly rainfall in less than 24 hours. In August 1975 Typhoon Nina hit Henan and produced floods that were twice as large as the Banqiao Dam was designed for. The dam was later rebuilt.
The equivalent of nearly 300000 Olympic swimming pools burst through the dam.
3000 other dams failed in communist China between 1949 and 1980. By the time night fell on Aug. In august 1975 typhoon Nina battered China for days dumping more than a years worth of rain in 24 hours. A wall of water nearly 20 feet high and over seven miles wide surged through the villages below.
