Question

different between perennial and non perennial rivers

Answer 1

Perennial rivers are rivers that exhibit a continuous flow of water throughout the year (except during drought) whereas non-perennial rivers that have a break in the flow of water for at least some time of the year.

Answer 2

The rivers that never dry up are perennial rivers
eg:ganga
the rivers which dry up and are seasonal are called non perennial rivers
eg:godavari