Even in flat ground, should not one distributary win over the passage of time?
From the newscientist.com
The Padma is joined by the Jamuna River, the largest distributary of the Brahmaputra.
From the en.wikipedia.org
This Pearl River is the widest distributary within the delta, although considerably short.
From the en.wikipedia.org
In Louisiana, the Atchafalaya River is an important distributary of the Mississippi River.
From the en.wikipedia.org
When these channel switching events occur a mature delta will gain a distributary network.
From the en.wikipedia.org
Below the Teesta, the Brahmaputra splits into two distributary branches.
From the en.wikipedia.org
Just before entering Cuttack city, it gives off a large distributary called the Kathjori.
From the en.wikipedia.org
By the end of the 18th century the Padma had become the main distributary of the Ganges.
From the en.wikipedia.org
The city is connected to the Mittellandkanal and the Elbe-Seitenkanal by a distributary.
From the en.wikipedia.org
More examples
A branch of a river that flows away from the main stream and does not rejoin it
A distributary, or a distributary channel, is a stream that branches off and flows away from a main stream channel. They are a common feature of river deltas. The phenomenon is known as river bifurcation. The opposite of a distributary is a tributary. ...
(Distributaries) small channels on a delta where the main channel has dried up.
(distributaries. (1)) In irrigation, the smaller conduits, ditches, or pipelines taking water out of laterals for delivery to farms. (2) Any system of secondary conduits in an irrigation or domestic water supply system. ...
A stream which splits away from the main channel and never rejoins it. Common across deltas as they are so close to the sea that the channel has no space to find its way back. When a channel does rejoin the main stream, it is braided.
Any of the numerous stream branches into which a river divides where it reaches its delta.