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  Floods
What is flooding
What is a flash flood?
Why doesn't the water flow away?
Why do the same places flood?
Why do floods happen so often?
Why was the Thames Barrier built?

 
The Thames Barrier in action Why was the Thames Barrier built?
In 1953 a very bad flood covered 160,000 acres on Canvey Island and killed 300 people in Essex. That forced the UK government to appoint a committee to look at flooding.

The solution was the Thames Barrier, built at a place called Woolwich Reach.

It is nine concrete barriers and between each is a large metal gate that can be raised when needed to guard against flooding.

Apart from monthly tests, the Barrier has been raised 25 times since it was finished in 1982.


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