Question

what are the condition required to form delta​

Answer 1

Explanation:

Conditions favourable for the formation of the Deltas:

1. Active vertical and lateral erosion in the upper course of the river to provide extensive sediments to be eventually deposited as deltas. ... The sea adjoining the delta should be shallow or else the load will disappear in the deep waters.

Answer 2

River deltas form when a river carrying sediment reaches either (1) a body of water, such as a lake, ocean, or reservoir, (2) another river that cannot remove the sediment quickly enough to stop delta formation, or (3) an inland region where the water spreads out and deposits sediments.