The start of a river is known as it's source.
The source or beginning of a river is called the 'headwater'. The beginning of a river is known as the source.
The beginning of a river is normally called the headwaters or source. The end of a river is the mouth.
Answer!-Usually the start of a river is called its source and the end of the river is called the mouth.
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
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.
it is called the mouth of the river
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 beginning a brook or a river is called the source. Most of the time the source is rather small and nondescript.
The beginning of a river is called it's Source or, sometimes a river is said to Rise At (some location)Example:Where is the source of the Hudson River? ~ The Hudson River rises in far northern NY State, in the Adirondack Mountains.
Darling River (western NSW) Daly River (NT)
the beginning is called a source the end is called a mouth
The begining is the "Source" The ending is the "Mouth"