Jorhat (pron: ˈʤɔ:(r)ˌhɑ:t) is an administrative district of the Indian state of Assam situated in the central part of the Brahmaputra Valley. The district is bounded by Majuli on north, Nagaland state on the south, Charaideo on the east and Golaghat on the west. On the north of the district, the river Brahmaputra forms the largest riverine island of the world. The administrative seat is at Jorhat city. Jorhat was previously a sub-division of undivided Sibsagar district. In 1983, Jorhat was carved out of Sibsagar District and was made a separate district.