Question

why are the riverine islands formed​

Answer 1

Answer:

The rivers coming from the northern mountains carry alluvium with them and do the depositional work. In the lower course, due to gentle slope, the velocity of the river decreases which results in the formation of riverine islands

Answer 2

Answer:

The rivers coming from the northern mountains carry alluvium with them and do the depositional work. In the lower course, due to gentle slope, the velocity of the river decreases which results in the formation of riverine islands.

I hope this will be help you.