 At that time, the Dihing river flowed south of present-day Moranhat and Sepon region as the Disoi, had the rivers Disang and Dikhou as its tributaries, ultimately joining the Brahmaputra in Mahuramukh(Bokakhat) and Lakhou(Kaliabor).At a later period (probably late 16th century), this stream of the Dihing dried out and the Dihing took another course to the north.This led to the overflow of water in the Brahmaputra to the north and the previously dried out course of Dihing was taken up by the Brahmaputra which lead to the formation of Majuli island.