River Tweed River Tweed The River Tweed, or Tweed Water (, ), is a river long that flows east across the Border region in Scotland and northern England. Tweed (cloth) derives its name from its association with the River Tweed. The Tweed is one of the great salmon rivers of Britain and the only river in England where an Environment Agency rod licence is not required for angling. "Tweed" is a British name of uncertain meaning. It flows primarily through the scenic Borders region of Scotland, and eastwards from the settlements on opposing banks of Birgham and Carham forms the historic boundary
River Glen, Northumberland to Bede, "washed them with the water of absolution in the river Glen, which is close by" (Tomlinson, 1888, p. 504). Because there is a reference to a similarly named river in Historia Brittonum by the Welsh author Nennius, some (Ekwal, 1928; Hunt, 2005) have hypothesized that the legendary British warrior Arthur began his campaign against Anglo-Saxon invaders near the confluence of the Glen and Till: The area around the Glen was the setting for some of the bloodiest border warfare between Scotland and England. The Battle of Humbleton Hill was fought near the river in 1402, as was the