Watch the video below to view the £2.6 million flood defences, devised by HR Wallingford, which safeguard the site, secure the jobs of over 400 employees, and have given James Walker the confidence to invest in a £10m expansion of its facilities. The barrier, built in 1982 on the Thames on the eastern side of the capital at Woolwich, was designed to protect 48 sq miles (125 sq km) of central London from flooding caused by tidal surges. Thames Barrier at night with Canary Wharf and O2 arena in the background. This means they provide the same amount of flood protection as the Thames Barrier in London.

The Environment Agency uses the number of Thames Barrier closures as an indicator for assessing London’s flood risk – and its records show a steady increase over the decades: just four closures in the 1980s, 35 in the 90s, and over 100 since 2000. Climate change: what Antarctica’s ‘doomsday glacier’ means for the planet .

But since its completion our environment has changed.

London is fortunate to have a vital piece of infrastructure in place that can protect the city from tidal flooding, the Thames Barrier. Climate change and the Thames estuary The Barrier was not intended to protect against sea-level rises caused by climate change, but it will be used for this purpose during the early part of the twenty-first century. The projected impacts of climate change across London and the Thames Valley will compound a difficult situation in which our water resources are already stressed and the population is increasing. The mayor launched his climate change strategy at the Thames Barrier.

Thames Barrier gets extra time as London's main flood defence This article is more than 11 years old Six-year study reveals that original designs overestimated threat from climate change

Plans to build a second Thames barrier are being urgently considered after an official report warned that London is becoming increasingly vulnerable to catastrophic flooding.


The Environment Agency operates the Thames Barrier every month for maintenance and testing, in addition to the annual test at a high spring tide. Londoners must use less water and plant more trees to prevent climate change from damaging the quality of life in the capital, the mayor has said. London's Thames Barrier was designed to help the city deal with an increasing risk of flooding. The Thames Barrier was built to protect about 46 square miles of central London (just under 8% of London’s total area) from major flooding until 2030.

Forthcoming scheduled closures. In London officials are deciding when to increase the height of the Thames Barrier.

And the United Nations has made adaptation a key … The Thames Barrier was built following a tidal surge in 1953 caused by a combination of a high tide and unusually strong winds pushing water towards the land.

They included more water metering, more green spaces … The Thames Barrier. Boris Johnson said measures were needed to combat the danger of increased flooding, droughts and heatwaves.


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