Word for: A river than splits into two, later rejoining into one? (fluvial terminology)

• A tributary is river or stream that flows into a larger river.
• A distributary a stream branching off a river.

Is there a word that combines both structures, the idea of a river that splits in two and later rejoins to become one river again?

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My focus here is on the waterway, not the land. I’m looking for a word describing the behavior of the river splitting and later rejoining, without regard for the geography, and without regard for the cause or effect between land and water.

Anabranch

An anabranch is a section of a river or stream that diverts from the main channel or stem of the watercourse and rejoins the main stem downstream.
Anabranch Wikipedia article

anabranch
n
(Physical Geography) a stream that leaves a river and enters it again further downstream
Collins English Dictionary

There is also the term "anastomose" which is used in a number of fields. It means to come together, and is used to refer to river streams and blood vessels for example.

Anastomosing streams consist of multiple channels that divide and reconnect and are separated by semi-permanent banks formed of cohesive material, such that they are unlikely to migrate from one channel position to another.
Anastomosis

I believe that the anabranch is one stream that breaks off, and the whole, that is, the main watercourse together with its anabranching streams which come together at a later point is an "anastomosing river".