http://www.exercisewatermark.co.uk/en/homepage.aspx
http://www.bbc.co.uk/news/uk-12661471
The largest flood defence exercise ever held in the UK is getting under way - and will last all week.
Exercise Watermark will involve thousands of people from the emergency services, councils and utility firms.
The practical test comes in the wake of heavy criticism of failings in the official response to the floods which hit several areas in 2007.
A series of scenarios across England and Wales will test the authorities' ability to co-ordinate.
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