Answer:
They can be classified into perennial and non-perennial rivers depending on the water flow in the rivers.
The perennial river can be defined as the river with the continuous flow throughout the year such as the rivers Ganges, Indus, Brahmaputra.
The non-perennial rivers are rivers like Narmada, Tapati, Mahanadi, Godavari, Krishna, Pennar, and Cauvery rivers that have no flow for at least a part of the year.
