That would depend entirely on the river, but eventually it all ends up in the oceans.
Some rivers flow into other rivers. Some flow into Lakes which may then feed another river or rivers. Some may even seem to just disappear (usually this would be a river that empties into a lake that then feeds off into underwater streams and rivers). The end result is the same. All water on the planet eventually makes it's way to the oceans if it doesn't evaporate into the atmosphere first.
The river water flows into the sea.
a river is a body of water that flows
water that flows downhill and into rivers and lakes is
The faster the river flows themore water it get
River flows by how clean the water is.
Water
As more water flows through a river, its speed will increase.
Water always flows down a river, so upstream is the opposite direction from the direction in which the water flows.
The Dniester River flows into the Black Sea
There are so many bodies of water in the US. The Montana river flows from Montana to the Mississippi River.
river
It doesn't.