From Tolkien Gateway
Map of the Withywindle

Tom came to Withy-weir. Down the river rushing
foamed into Windle-reach, a-bubbling and a-splashing...

Withy-weir was a weir[note 1] in the Withywindle river above the Windle-reach. Tom Bombadil passed it during his boat-trip along the river.[1]


  1. Robert Foster has suggested that the Withy-weir most likely was made by the Hobbits of Buckland. Cf. Robert Foster, The Complete Guide to Middle-earth, p.429