Summary
Summary River Tees and Somerset Levels case studies
Notes on case studies with good place-specific information for OCR geography A
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River Tees and Somerset Levels case studies Located in the North of England
Quite short, only 100km long
Starts in moorlands near the Penines
Quite cold and large amounts of rainfall
Upper course
Starts at around 600m above sea level
V-shaped valley
Upstream Cow Green reservoir
Steep sections, large gradient
More pastoral farming around this area
High Force waterfall + a gorge from waterfall retreat, around 20m tall
Whinsill is a hard rock, softer limestone caused the waterfall to form
Middle course
Deeper soil due to shallower gradient so more arable farming
Bedload fragments are smaller
River starts meandering more
The town of Yarm is enclosed by a meander, under threat potentially
Lower course
2 meanders cut off for easier navigation for boats (channelisation) from Stockton
Heavily industrialised
Iron and steel industry set up
Nuclear power plant
Management
Cow Green reservoir upstream (+ 9 others)
o Helps regulate water flow, therefore reducing the risk of flooding downstream
o Could cause areas upstream to flood, reducing biodiversity
o Has to be dredged every 5-10 years
River is dredged in order to increase capacity (+ levees by putting dredged sediment on
banks)
o Helps with letting larger vehicles pass through river
o Relatively cheap
o Has to be done relatively frequently
Concrete walls and gabions (rocks in metal cages) at Yarm to prevent erosion
o Effective
o Relatively expensive
Channelisation additionally helps for water to exit faster in case of a flood
Tees barrage
o Reduces risk of flooding
o Allows for recreational activities
o Provides clean water
o Protects Middlesborough + Stockton
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