Incessant heavy rains in Arunachal Pradesh and the affected districts triggered the first wave of floods with 75,000 people being displaced as their dwellings were washed away, the officials said.
The state government, after sounding the alert, directed the National Disaster Management teams and district administrations to provide rescue, medical and relief materials to the affected people, they said.
The road link between Assam and Arunachal Pradesh through Dhemaji district has been severed following the flood waters running over National Highway-52 at Samarajan.
The rising waters of the Brahmaputra were also swelling the streams inside the one-horned rhino habitat Kaziranga National Park in Golaghat district, Park sources said.
A report from worst-hit Lakhimpur district said more than 150 villages with around 1.2 lakh people were submerged by the Brahmaputra and its tributaries flowing above the danger mark.
The North Lakhimpur College area of district headquarters Lakhimpur town was waterlogged by the Sondi river, while the Ronganadi river overran 60 villages under Lakhimpur revenue circle (RC).
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