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

The Interreg IVB North Sea Region Programme

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Lippenbroek: Flood Control Area with Controlled Reduced Tide (FCA-CRT)

Crux of the matter

Tidal marsh restoration with a FCA-CRT construction can happen very fast and spontaneously. The inlet sluice has to be situated sufficiently high to allow sufficient differences in inflow duration and volume and thus to create a large variation in inundation frequencies and water levels in the polder.
The inundation curve is different than in natural intertidal areas (duration is longer, and has three phases: ebb, stagnant and flood) but this does not obstruct the colonisation by fauna and flora. Initial terrestrial vegetation slowed down the establishment of estuarine species and thus removal before culvert opening could decrease this impact. The area is however too small to influence measurably the water quality of the Scheldt.
Based on the Lippenbroek pilot project, a lot of scientific insight was generated with respect to FCA-CRT and with intertidal mudflat and marsh in general.

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Report: Management measures analysis and comparison