Aerial footage of the Hollandse Ijssel Barrier in Rotterdam. Preparation for the Hollandse Ijseel Barrier started on January 18th 1954, less than a year after the flood of 1953 which killed 1,835 people. The Hollandse Ijssel River flows through the densely populated city of Rotterdam into the North Sea. In the event of a flood, it would easily burst its banks. The Delta Commission advised that a movable storm surge barrier should be constructed, so not to be an inconvenience to shipping traffic when not in use. A double storm surge barrier was therefore built. It consists of two 80 metre wide steel gates, suspended between two lift towers. Under adverse weather conditions, the gates are lowered into the water. For further information please visit http://www.deltawerken.com/322
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