Project part-financed by the European Union (European Regional Development Fund)

The Interreg IVB North Sea Region Programme


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Kleinensieler Plate

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Crux of the matter

Before heightening the overflow barriers in 2005, the shallow water zone on the Kleinensieler Plate was strongly affected by siltation (Figure 3). As a result of heightening two of the overflow barriers, the amount of suspended matter entering the project area was reduced significantly and siltation tendencies were slowed down. At the same time, the tidal influence on the project area was restricted. To optimize the interplay of highest possible tidal influence and tolerable suspended matter entry (= tolerable maintenance effort) should be a key issue in view of future planning and implementation processes of comparable measures. It should also be considered whether the design of the overflow barriers can be used to initiate some flowing dynamic in the shallow water zone in order to prevent too high sedimentation rates. This was the goal in keeping the barrier to Treuenfelder Arm on the original level, now some 30 cm lower than the heightened ones to river Weser. However, there will be no way to completely avoid siltation without creating a different habitat with differing features and functions.


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3b. Degree of synergistic effects according to Natura 2000 aims 5. Literature

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