The Narmada Control Authority (NCA) has been setup under the final orders and decision of the Narmada Water Disputes Tribunal (NWDT) as a machinery for implementation of its directions and decision. The authority started functioning from 20th December, 1980. The authority is a body corporate with representatives of the four States of Madhya Pradesh, Gujarat, Maharashtra, Rajasthan and representatives of Govt. Of India. The authority is funded in equal proportions by all the four states. Secretary (Water Resources), Govt. of India is the ex-officio Chairman of the Authority, whereas the routine administration is the responsibility of Executive Member of the Authority. NCA presently has six subgroups. The Narmada Control Authority has its headquarters at Indore.