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 Sark and was formerly a haven for criminals and outlaws who wished to exploit the weakness of the two countries' border defences. The boundary between the Sark and the Esk is called the Scots' Dike. Its name is not connected with "Cutty Sark". River Sark "Disambiguation: for other meanings, please see Sark (disambiguation) The River Sark or Sark Water is a river best known for forming part of the western border between Scotland and England. Most of its short length, however, is entirely in Scotland. It flows into the estuary of the River Esk just to the south of Gretna. During