Source (river or stream)

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A stream source

The source of a river or stream is the original point from which the river flows.

The source of a river or stream may be a lake, a marsh, a spring or a glacier. This is where the stream starts.

The farthest stream is called the headstream or headwater. The source is the farthest point of the river stream from its estuary or its confluence with another river or stream.

Where a river is fed by more than one source, it is usual to regard the highest as its source. The source is where a river begins, and the mouth is where it joins the sea.

The source normally starts in mountains flowing down then into the meanders (bending bits)