An estuary
The River Ribble
The point where the river starts off is called the
The area where a river originates is called its source. It is typically a high elevation location such as a mountain or a glacier where water begins to flow and eventually forms a stream or river. This is the starting point of a river's journey towards its mouth where it empties into a larger body of water.
It is called a delta.
It is the river's mouth
wellthey are called defenses and this is because a river starts in a mountain and ends at the sea wellthey are called defenses and this is because a river starts in a mountain and ends at the sea
an area drained by a river is called pooo lol
A river starts at aplace called it's source. This could be an underwater spring or a melting glacier.
A river starts at it's source and ends at it's mouth.
I believe its called the source.
I think it may be called The Source
The area of fertile soil at the mouth of a river is called river delta.