The flood waters have entered Burapahar and Bagori ranges of the world heritage site in upper Assam forcing the animals there to take shelter on high platforms built for them, the park sources said.
They are being given the special food sent by Wildlife Trust of India by the authorities with the help from NGOs.
Some of them were also moving towards the highlands in neighbouring Karbi Anglong district, the sources said.
Special measures to prevent poaching had also been taken with the personnel in the 150 anti-poaching camps on alert. The elite Assam Forest Protection Force commandos deployed in the Park have been put on round-the-clock patrolling duty along with forest officers, forest guards and home guards.
Poachers attempt to take advantage of the floods to attack the displaced animals or those coming out of the Park looking for shelter on the highlands, the sources said.