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The shutter dam

It is situated at the point where the Sauer joins the Rhine. It is a one-off construction in Europe as it is a flap gate that rests on the water outside flood periods. When raised vertically, it acts as a dyke during high water periods. The construction is 60 m long and 7 m high and it can be moved using hydraulic jacks, each with a thrust of 350 tonnes.

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