Question

Distributaries are formed when a river reaches near its mouth

Answer 1

$\huge\underline\mathfrak\blue{Solution}$

When this mid-channel bar is deposited at the mouth of a river, the flow is routed around it. This results in additional deposition on the upstream end of the mouth-bar, which splits the river into two distributary channels. A good example of the result of this process is the Wax Lake Delta.