In Assam, 19 districts are once again under flood waters.
The second wave flood claimed 5 lives as total death toll mounted to 89 in this year so far in the state.
The report said Brahmaputra, Buridihing, Dhansiri, Jia Bharali, Puthimari and Sankosh rivers were flowing above danger levels and have submerged more than 20,000 hectares of cropland.
As per the reports of Assam State Disaster Management Authority (ASDMA) 3.55 lakh people in 781 villages of 15 districts of the north eastern state were hit by the deluge caused by incessant rains in the upper reaches of Brahmaputra river.
Many parts of northeastern states including Assam, Nagaland, Manipur, Mizoram, Meghalaya, and Tripura have been receiving heavy to very heavy rainfall activities since the last few days.
Nine major rivers were flowing over the danger level and were on a rising trend.
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Following the devasting flood, around 64,000 people are homeless and forced them to take shelter in the relief camps set up by the districts administration. Four people have died in floods in Assam in past 24 hours.
Personnel of the State Disaster Response Force (SDRF) and National Disaster Response Force (NDRF) are now engaged in rescue and relief operations in flood-affected areas of the State. The army has also been put on stand by alert for emergency rescue operations, news agency PTI reported. Almost 20,000 people have taken shelter in relief camps in Agartala and suburban areas after an unprecedented almost 200 mm rainfall was recorded by the meteorological department, which predicted heavier showers for the next 24 hours till Sunday evening.
In Meghalaya, the Kynshi River is flowing above the danger level, inundating low lying areas in Kauai hills.
Flash floods and landslides have also affected large swathes of Namsai and West Siang districts of Arunachal Pradesh, washing away bridges and damaging roads.
He also announced a package of Rs 2,000 crore for the flood and landslide-affected states of the region. In North Bengal, nearly all trains are running late.