To hold back or restrain a rivers flow. Such as building a dam on it.
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.
Free-flowing means that something can flow without hindrance. A example of this is a river that exists without being blocked or impeded by a dam. A dam would resist the flow of a river, causing water to remain in or accumulate in a given region, which would not be a free-flowing scenario.
To inhibit is to "prevent or stop something from happening".
Canyons don't flow. Do you mean the river flowing through the canyon?
Think you mean the Vistula which is an important river in Poland
Rivers, streams or such like that flow into another larger river
Some rivers will spread out and flow into new paths and cut into the banks. The Channel is the deepest part of the river and is the part that continues to flow when the river level drops.
The river nine? That is not a river but if you mean the River Nile - always put capital letters on then it flows through Egypt but I can't remember which Cities.Hope this helped!
Do you mean a Continental Divide? It's the area of higher elevation where the river systems east of the line all flow into the ocean on the eastern side of the continent, and all the water in the river systems to the west of that line flow toward the ocean to the west.
Stop something moving.
It would mean that the river was enclosing the pasture, like a barrier. Now if you are going for the deeper meaning it could mean that the river is a never ending flow in that circle. It isolates the pasture and protects it from harm or trapping it because no one can access it with the river in the way.
It doesn't. All rivers eventually lead to the ocean. But if you mean why doesn't it flow out onto the ground, the pressure of the water kinda digs a "tunnel" and if you see a river, you will notice that the river level if lower that you are. Hope ths helps!