The Narmada, also called the Rewa and previously also known as Nerbudda, is a river in central India and the sixth longest river in the Indian subcontinent. It is the third longest river that flows entirely within India, after the Godavari, and the Krishna. It is also known as "Life Line of Gujarat and Madhya Pradesh" for its huge contribution to the state of Gujarat and Madhya Pradesh in many ways. Narmada rises from Amarkantak Plateau near Anuppur district. It forms the traditional boundary between North India and South India and flows westwards over a length of 1,312 km (815. 2 mi) before draining through the Gulf of Khambhat into the Arabian Sea, 30 km (18. 6 mi) west of Bharuch city of Gujarat.