I think you are meaning Meanders, large bends in the river system in the lower course of the river.
Rivers
They flow into 'The Tigris' and 'Ufratis' rivers!
I am assuming you mean the rivers and rivulets that flow int a bigger river and contribute to its flow. In that case they are called tributaries. If you mean what are the rivers called when they flow into the sea, then they are called delta's or river mouths.
A rivulette :)
Rivers and streams that flow in to a larger river are called tributaries. They all form in the same spot.
In mainland France, there are 119 rivers that flow directly to the Atlantic Ocean, the English Channel, and the Mediterranean Sea. These direct rivers are called fleuve, from the word flow. There are also hundreds of tributaries, which are rivers that do not flow directly, no matter their widths or flow rates. These tributaries are called rivières.Rhone Soane Loire Dordogne Seine Aisne Garronne & many more.
lava rivers -Your welcome
The Estuary.
A dam
these are the peninsular rivers:-1)mahanadi2)tapi2)kirshna3)kaverietc.
Large streams of surface water are called rivers. Rivers flow downstream towards larger bodies of water, such as lakes or oceans, and play a key role in shaping the landscape and supporting ecosystems.
Don't know if I am answering your question correctly. But to my understanding we call them "sub-rivers" or "tributaries" which will merge into the main rivers.