The North Esk River is one of the tributaries of the Tamar River together with the South Esk River. It starts in the mountains of the states North East joining with the St Patricks River, flowing through Launceston. Launceston's Old Sea port tourist feature is located on the North Esk River. It isn't really tidal except in the area where it joins the Tamar. The river is sometimes subject to flooding especially in East Launceston suburbs. The Tamar River in northern Tasmania is formed by the merging of the North Esk River and South Esk Rivers in Launceston. ... Launceston is the name of the following places: Launceston, Cornwall, England Launceston, Tasmania, Australia Note that the English Launceston is pronounced Lawn-sn, Lan-sn or Larn-sn while the Australian one is pronounced Lon-cestun. ...