The start of a river is called the headwaters or source; the end of a river is called the mouth.
When a river flows into another river, the 'mouth' of the river is called the confluence.
The end of a river (that is, the point at which it empties into another body of water) is usually called the "mouth". The beginning (the point at which the river starts) is sometimes called the "source" or the "headwaters".
'Source' and 'Mouth'
The source
The source is where a river begins. The end of a river is usually at the sea.
source and mouth.
The beginning of a river is normally called the headwaters or source. The end of a river is the mouth.
the beginning is called a source the end is called a mouth
They traveled the Missouri River.
Not strictly speaking. The beginning is called the SOURCE - often high up in mountains or similar The exit of the river to the sea (or end of the river) is the MOUTH
the Missouri river , {they also explored the Columbus river and rocky mountains
The Ebro river flows southeast from beginning to end.
The start of a river is called the "source" or "headwaters". The end of the river is called the "mouth" or "outlet".
Depends on which end you mean. The beginning of the river, the top end, is called the headwaters. The other end is called the mouth, or delta.
Rivers run from the source, or head, to the mouth of the river where it empties into a larger body of water, be it another larger river, or an ocean, or a sea.
The source of a river is where it starts as a tiny stream. The other end is the mouth, where it reaches the sea.