Floods in Heilongjiang, Liaoning and Jilin provinces have led to the relocation of 140,000 people, state-run Xinhua news agency reported.
The latest casualties brought the death toll of floods to 29, Xinhua said, adding that the flooding in the region is the worst in decades.
In Heilongjiang, the floods have destroyed over 2,500 houses and severely damaged at least 12,500 others, with direct economic losses estimated at USD 1.15 billion, said the provincial civil affairs department.
More than 5,000 officers and soldiers from the Shenyang Military Area Command have been dispatched to northeast region for flood relief.
Shenyang Military Area Command has also sent vehicles and boats to flood-stricken areas.
