Headwaters (noun)

The source or beginning of a river or stream, especially the place where it emerges from underground or from a spring.

Origin:

The term 'headwaters' originated in the 16th century and refers to the source or beginning of a river or stream.

Examples:

1. The headwaters of the river were in the mountains, and it flowed into the sea.
2. The headwaters of the stream were surrounded by a lush forest.
3. The headwaters of the Nile River are in Uganda.
4. Fishing was best in the headwaters of the stream where the water was cool and clear.
5. The headwaters of the Amazon River are in the Andes Mountains of Peru.