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In Vienna, flooding is prevented pretty frequently without a lot of people even noticing it - thanks to the services of general interest

Intelligent canal control, underground collection tanks and the Danube Island keep Vienna save.
From controversially discussed flood protection project to celebrated local recreation area: Vienna’s Danube Island

Up to 300,000 people visit one of Vienna's most extraordinary landmarks ... every weekend! We are talking about Vienna's Danube Island, 21 kilometres in length, up to 250 metres wide, a man-made island within the river Danube.