The River Tweed, or Tweed Water (Scottish Gaelic: Abhainn Thuaidh, Scots: Watter o Tweid, Welsh: Tuedd), is a river 97 miles (156 km) long that flows east across the Border region in Scotland and northern England. Tweed derives its name from its association with the River Tweed.[1] 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. The river generates a large income for the local borders region, attracting anglers from all around the world, acting as one of the best salmon rivers in Scotland.[2] Tweed is an Old Brythonic (Celtic) name meaning "border".[3]