Which river has the largest basin in India?
River basin is considered as the basic hydrological unit for planning and development of water resources. The Largest river basin in India is the Ganga basin. Narmada river is the fifth largest river and is also the largest west flowing river. The length of this river basin is over 2500 km. The Ganges River originates in the Himalaya Mountains at Gomukh, the terminus of the Gongotri Glacier . The surrounding river basin has a population of more than four hundred million people.