terence lam. information of river thames location : southern england length : 346km (second longest...
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River ThamesTerence Lam
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
Thames Barrier
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
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
Thames Barrier in action
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)
Source:WikipediaBBC
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