The source or beginning of a river is called the 'headwater'. The beginning of a river is known as the source.
it is called the mouth of the river
The beginning of a river is normally called the headwaters or source. The end of a river is the mouth.
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.
Answer!-Usually the start of a river is called its source and the end of the river is called the mouth.
the beginning is called a source the end is called a mouth
The begining is the "Source" The ending is the "Mouth"
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.
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.
The begining is the "Source" The ending is the "Mouth"
c. near the mouth of the river
source and mouth.