That could be a delta, located at the river's mouth.
The crest is the term that refers to the highest point of a wave.
It is the point where the river empties into a large body of water--a lake, or ocean.
The best term for where a river begins is "source." The source is the point where a river originates, often from springs, melting snow, or rainfall. In contrast, a "mouth" refers to where a river flows into a larger body of water, while a "delta" is a landform created by sediment deposition at the river's mouth.
It is head water. (;
Let
The freezing point of fresh water under normal conditions.
In geography, the term "mouth" refers to the point where a river empties into a larger body of water, typically an ocean, sea, or lake. It is the opposite of the source of the river and marks the end of its journey.
The term point of view refers to the way the write has chosen to tell the story. Authors can choose to tell the story from the point of view of a character or from a narrator outside of the action of the story.
The term rapids refers to a body of water in a river, where the river bed is particularly steep. This results in a change in gradient, which in turns generates a change in velocity and turbulence.
Zenith
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The term 'break-even' refers to the point at which a company has no profit and no debts. They have no losses or gains.