Odisha and Chhattisgarh have now expressed willingness to resolve the Mahanadi water dispute amicably between themselves. Explore the Mahanadi River, a major east-flowing river in India. Learn about its course through Chhattisgarh and Odisha and its vital role in the region's geography and history. It is divided into three sub-basins: Upper Mahanadi , Middle Mahanadi , and Lower Mahanadi . The upper basin, resembling a saucer shape, is predominantly located in Chhattisgarh. The Mahanadi River contributes much of the resources and facilitates industrial development from east-central India to the east coast. The water potential of Mahanadi makes it the second largest in India after Godavari.