Board Thread:Suggestions forum/@comment-31735895-20170417000134

Greetings all! In the Old Forest the river Withywindle flows out through the forest before reaching the river Baranduin. It was a brown river, like the Baranduin (literally means brown river). The name Withywindle means "Winding-willow-river" and is believed among Hobbits to be bordered by hundreds of huge, ancient Willow trees. Also, if what Goldberry is in fact a water spirit, than a new mob (water spirits) should be implemented accordingly.

This idea is canon and was written into Lord of the Rings. 