Floods and landslides triggered by rain has also thrown life out of gear in Arunachal Pradesh.
Dhansiri North river is, however, likely to flow in high to unprecedented flood situation in Assam's Darrang district, the Met department said.
More than 1,222 people are taking shelter in these relief camps. The fresh wave of floods has submerged upper and lower Assam, affecting almost 10 lakh people. Over 1 lakh hectares of cropland has also been submerged. Personnel of the State Disaster Response Force, National Disaster Response Force and others were engaged in rescue and relief operations. The army has also been put on stand by alert for emergency rescue operations, news agency PTI reported. Four people have died in floods in Assam in past 24 hours.
According to Assam State Disaster Management Authority (ASDMA), eight districts have been affected with the number of affected population increasing to 63 329.
The 19 districts so far affected due to the current wave of flood included Dhemaji, Lakhimpur, Biswanath, Sonitpur Baksa, Barpeta, Bongaigaon, Chirang, Kokrajhar, Dhubri, South Salmara, Morigaon, Golaghat, Jorhat, Majuli, Sivasagar, Charaideo, Dibrugarh and Tinsukia. The Brahmaputra was flowing above the danger mark at Nematighat, Dibrugarh, Tezpur and Dhubri, the ASDMA stated in a bulletin on Saturday evening. A portion of National Highway 415, which connects state capital Itanagar with Assam, eroded near Karsingsa on Friday.
In Agartala, the capital of Tripura, almost 20,000 people have taken shelter in relief camps.
Global Flood Awareness System (GloFAS) predicts large scale flooding for the whole Brahmaputra river basin and also for parts of the Ganges river basin until 19 August.
While seven of the 12 affected areas were already repaired and the lines certified for train running at controlled speed, in four sections train running are suspended till the situation improves. Road communication in several parts of the state has been disrupted due to landslides. Nearly all trains are running late in North Bengal due to continuous rainfall.