Usk, river, c.60 mi (100 km) long, rising in the Black Mts., S Wales and flowing generally SE to Bristol Channel near Newport. The upper Usk is noted for its beauty and its excellent fishing. It is the river associated with the legend of King Arthur.
The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2012, Columbia University Press. All rights reserved.
More on Usk from Infoplease:
See more Encyclopedia articles on: British and Irish Physical Geography