The River Tweed rises in southern Peeblesshire at Tweed's Wells, near the source of the Clyde and Annan, and flows in a winding course of about 96 miles through Peeblesshire, Selkirkshire, and Roxburghshire, and between Berwickshire and Northumberland, entering the North Sea at Berwick-upon-Tweed, England. It receives a number of streams, including the Ettrick, Gala, and Teviot.
