Case study 11 river management on river Severn Shrewsbury – Flashcards
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Locate shrewsbury
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On a series of meander on river severn Source of river severn in the cambrain mointains
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Why is Shrewsbury at risk
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Built on the floodplain River Severn floods frequently due to impermeable rock on Cambrian mountains as steep gradient
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How much has been spent on flood defences since 2000
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£4.6 million
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How is the river managed
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Flood wall Demountable flood barrier Flooding of parkland upstream of city centre Earth embankments
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Flood wall
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2.5m high Concrete faced with brick Increases capacity of river channel Aims to blend in
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Demountable flood barrier
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Increases capacity of river and creates flood water storage However it has to be put up in time to be effective
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Flooding parkland upstream
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Flood storage scheme Sluice gates open of close Allowing this reduces water in river and lowers the flood peak Relatively low value and only affects a few people easy to clean after as well
