Question

A branch of a river is what​

Answer 1

A river is made up of a main channel and many branches, or tributaries that come in to it. Any river or stream that comes into the main channel is a tributary, even if it is very large.

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Answer 2

A distributary, or a distributary channel, is a stream that branches off and flows away from a main stream channel. Distributaries are a common feature of river deltas. The phenomenon is known as river bifurcation. The opposite of a distributary is a tributary, which flows towards and joins another stream. Distributaries are often found where a stream approaches a lake or an ocean. They can also occur inland, on alluvial fans, or where a tributary stream bifurcates as it nears its confluence with a larger stream. In some cases, a minor distributary can divert so much water from the main channel that it can later become the main route.