Case study - river landforms - River Tees
River Tees
The River Tees is located in the north of England. The sourceThe place where a river starts in its upper course. of the River Tees is located in the Pennines and it flows east to its mouthThe place where a river meets the sea. where the river joins the North Sea.
Upper course
- The upper courseThe highest section of a river located in the mountains. has hard impermeable rocks. Here, vertical erosionWhen the land is eroded or worn away in a downwards direction, eg a river that is high up will erode vertically because gravity pulls the water downwards. has formed a V-shaped valley.
- High Force, the UK's largest waterfallA steep drop in a river. at 21 metres high is located in the upper course. An area of hard rock, called Whin Sill (or Whinstone), is located above a layer of soft rocks (sandstone and shale) and together they create this impressive waterfall.
Middle course
- As the River Tees starts to erode sideways (lateral erosionThe wearing away of the landscape when a river erodes sideways.), it forms meanderA bend in a river.. These can be identified in the middle courseThe middle section of a river which has sloping land. near Barnard Castle.
Lower course
- Near Yarm, the meanders in the lower courseThe final section of a river located on flat land. are much larger, and Oxbow lakesa curved lake formed from a horseshoe bend in a river where the main stream has cut across the narrow end and no longer flows around the loop of the bend. have formed. In this area there are also leveeRidges or banks formed by deposits of alluvium left behind by the periodic flooding of rivers. Can also be artificially constructed banks or walls. which have formed when the river has flooded.
- The River Tees has a very large estuaryThe open mouth of the river where it meets the sea. with mudflats and sandbanks which support wildlife in the area. Sites such as Seal Sands are protected areas.