It is a tributary
Small streams and rivers that flow into larger ones are called tributaries. A tributary does not flow directly into a sea or ocean.
Rivers and streams that flow in to a larger river are called tributaries. They all form in the same spot.
smaller streams or rivers that flow into larger ones are called tributaries
Tributaries flow into and distributaries flow away from.
Smaller streams that flow into rivers are called tributaries. These tributaries contribute to the overall flow and volume of the main river.
Small creeks, streams and rivers that flow into larger rivers are called tributaries
Streams are merely tributaries of rivers. A river is the wider channel into which smaller creeks, streams and rivers flow. (Streams do not flow out of rivers.) Streams carry water from higher sources, emptying into the river. As more streams empty into a river, it tends to become broader, simply because of the greater volume of water it is carrying.
Streams and rivers flowing into a larger river or lake. They CONTRIBUTE to the main flow.
Tributaries are streams that flow into one primary river. A tributary can also flow into another stream or a lake.
This would be a river basin.
Tributaries are the smaller rivers and where they join is called a confluence
It is usually the other way round. Moving in the direction of water flow, streams merge together to form larger rivers, the streams are called the river's tributaries. The point of joining is called a "confluence".