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In this work package WID monitoring and modelling is carried out because WID can be a very efficient maintenance dredging method where forces of nature (gravity) are used to do the horizontal transport of sediment. In WID water is injected in the bed to fluidize the top layer of soil. This fluidized soil layer then starts to move as a near-bed density current and is driven steered by bathymetric slopes and (tidal) currents. WID works best for fine, cohesive soils. This type of soil can be difficult for other types of dredging equipment. WID can also be used to condition the mud to keep a port navigable without the need to take out all sediment.
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