Viskan is a river in the south west of Sweden. It is about 150 kilometers long and has its outlet in the Kattegat. It runs through Borås. For the Second World War frigate class, see River class frigate The Murray River in Australia A river is a large natural waterway. ... The Baltic Sea The Kattegat, or Kattegatt, is a bay of the North Sea and a continuation of the Skagerrak, bounded by Denmark and Sweden. ... BorÃ¥s Municipality [buroːs] is a municipality in western Sweden, where the city BorÃ¥s is the seat of government. ...