3 times large range of rainfall occurred in the Nenjiang
River Basin in mid and late August 1969. The upstream
alliance station of Trunk stream occurred peak flow reached
9810m3/s in late August and early September.
Catastrophic floods had occurred in the areas below the
Alliance since the founding of new China. Dikes in the
middle and lower reaches of Nenjiang River overflowed
Most dikes of Nenjiang River had overflown and burst. The
Bo kuqian to Laha county of middle reaches had burst. Moreover,
there were 6 grounds which hadn’t dike overflowing. 10 levees
were overflown in Nemor River Zhenzi Street to Rich Bailu
villages of left bank. There were 12 places burst in the
lower part of the river.
Qigihar City suburb Jahr tournament’s embankments of right
bank had burst. Xingfu embankment, Qianjin embankment and Qifu
highway were overflown. Three embankments of Yuejin Road had
burst and the traffic was interrupted. Five embankments of
the left bank of Nenjiang River Daang had burst. The Binzhou
railway was washed and broken close to 300 meters and The train
was suspended for one month. The lower reaches of Nenjiang River
on the left bank of Tailai Tuoli River’s all dikes whose length
was 47.6 km had burst.
According to an uncompleted statistic, the area of farmland
inundation was about 94 thousand Hm2 and 14 villages
and 1510 houses were affected. The direct economic loss reached
6 million 500 thousand yuan.