The Kyle of Sutherland is the natural tidal estuary for the Rivers Carron, Oykel, Cassley, Shin and Evelix with their many tributaries, burns and fresh water lochs. Together they drain 163,647 hectares of land and amount to some 46 miles of tidal zone, 70 miles of principal rivers, 400 miles of tributaries and 61 named lochs and lochans.
Centuries ago the four main Kyle of Sutherland rivers, the Carron, Oykel, Cassley and Shin, were seen as the tributaries of one main system. Indeed a cursory glance at a map would lead many to reach such a conclusion. If they were actually one river, the latter would on the basis of its combined salmon rod catch rank just below the four “great” Scottish salmon rivers.