the source is the start of a river
Source
The source
· Niger River (Africa) · Nile River (Egypt)
Entrance, beginning, mouth of a river.
The word source means, a place where something has its beginning or is found. eg: one from where a river flows.
The source or beginning of a river is called the 'headwater'. The beginning of a river is known as the source.
To find where the beginning of a river is.
River Indus.
the source of the river
That would be the Indus River.
Missippi River