River Tees

The River Tees is a major river in north-eastern England. It rises on the eastern flanks of the 2,930 ft Cross Fell in Cumberland before flowing over 80 miles eastwards, marking the boundary between County Durham and Yorkshire, to reach the North Sea at Redcar. In its upper reaches it flows through the upland country of the North Pennines. Its middle reaches flow through agricultural countryside. The lower reaches of the Tees - from Stockton on Tees to the sea pass through a heavily industrialised landscape. Teesside (Stockton, Thornaby, Middlesbrough and neighbouring settlements) was the site of coal export facilities, shipbuilding, chemicals manufacture and iron and steel making; and chemicals and steel are still the industrial mainstay of the area.