July 28, 1976, the 1998 catastrophic flood was a major flood in the Yangtze River, Nen River, Songhua River and other river basins. After the two floods in 1931 and 1954, it was one of the river-wide catastrophic floods in the 20th century; the Nenjiang River and Songhua River floods were also the worst catastrophic floods in the whole river basin in 150 years.
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