Thames Barrier (London) Reviews
Description:The Thames Barrier is a flood control structure on the River Thames at Woolwich Reach in London. It is the world's ... more
Thames Barrier (London) ... second largest movable flood barrier after the Oosterscheldekering in The Netherlands. River Thames Flood Barrier River Thames Flood Barrier The gate in the middle of this view has been raised to the maintenance position and a barge is in attendance. The gate in the middle of this view has been raised to the maintenance position and a barge is in attendance. Built across a 523 metre wide stretch of the river, the barrier divides the river into six navigable and four smaller non-navigable channels between nine large concrete piers. The flood gates across the openings are radial, i.e., half-cylindrical, and they operate by rotating, raised by hydraulics out of a horizontal sill below the water to form the barrier. They can rotate further to allow "underspill" for maintenance. All the gates are made of steel. The four large central gates are 61 metres long, 10.5 metres high (above local ground level) and weigh 1,500 tonnes; the outer two gates are 31.5 metres. Additionally, four radial gates by the riverbanks can be lowered. These gate openings, unlike the main six, are non-navigable.
Newest Review: ... increase peak river flows and in turn shorten the lag time, causing rivers such as the Thames to reach bank-full discharge point and ultimately flood the surrounding land. The area surrounding the Thames River will only lead to increase this problem because most of it is urbanised. As a result water would reach the river very quickly as surface run off over concrete and brick and would not be ... more
Customer Thames Barrier (London) Reviews (1)
by - written on 21/02/08 (Very useful, 320 readings)
The Thames river barrier was built between 1974 and 1984 to protect London from floods caused by high tides and storm surges. Built 523 metres wide across the stretch of the river, the gate is 10.5 metres high and weighs 3500 tonnes. Sounds pretty safe doesn't it? Prior to 1990, the barrier closed on average just twice a year. On average since then it has closed 4 times a year, with a peak of 14 in 2003. Surely now the time has come to build up the barrier again before nature catches up with us. In this I'll talk about issues which could potentially lead to inreased chances of flooding in London over the next century. The probable effects of climate change ... Read the complete review
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