A large number of people have taken shelter in relief camps as rivers Rapti, Ghaghara, Burhi Rapti, Kunhara, Rohin and Quano are in spate and have inundated vast areas in Lakhimpur Khiri, Barabanki, Faizabad, Ballia, Gorakhpur and Siddharthnagar.
Road traffic has been disrupted in flood-affected areas. Nearly 28 companies of the NDRF, 33 companies of PAC along with choppers of the Indian Air Force are engaged in relief and rescue operation, officials said.