terence lam. information of river thames location : southern england length : 346km (second longest...
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River ThamesTerence Lam
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Information of River ThamesLocation : southern EnglandLength : 346km (second longest in the United
Kingdom)Source :Thames HeadMouth :Thames Estuary, North SeaCities flow through : London , Windsor , OxfordAverage discharge : 65.8 m /s
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Importance of River Thames provide habitation, water power,
food and waterInternational trade & cultural
canter -acted as a major highway
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Thames Barrier
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Information about Thames BarrierWorld's second-largest movable flood barrierBuilt across a 520-metre wide stretch of the
riverTotal construction cost: around £534 millionLocation: downstream of central London
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Reasons for building Thames BarrierPrevent London from flooding - A storm surge generated by low pressure in the Atlantic Ocean sometimes tracks eastwards past the north of Scotland -may then be driven into the shallow waters of the North Sea.
Rising of water levelsHistorical flooding - 1928 Thames flood
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Design of Thames Barrierrotating gatesdivides the river into four 61 meter and two
about 30 meter navigable spansgates are hollowmade of steel (40 millimeters thick)20.1 meters high & weigh 3,700 tones (4
central gates)
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Source:WikipediaBBC
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