The research described in this report is made in the framework of the project Vervolgstudie inventarisatie en historische analyse slikken en schorren langs de Zeeschelde. The main purpose of the project is to investigate why some of the evolutions of the slikke and schorre area in the past – described in the report Van Braeckel et al. (2006) – did occur. The main tools to investigate these evolutions are measured data from the past as well as numerical models. With the numerical models different scenarios were studied in order to see how each of them influenced the tidal penetration in the Scheldt estuary. In fact it is change in tidal penetration that will affect the slikke and schorre area. In each scenario one possible cause of tidal change was implemented. A distinction was made between natural evolutions (sea level rise, changes in fresh water discharge) as well as human interventions in the estuary (poldering, straightening of the river, deepening of the navigation channel, …) in the scenarios. In Coen et al (2009) the results of the 1D model are described. In Ides et al. (2008) a sensitivity analysis of the 2D model is carried out, in order to have an idea about the uncertainty interval of the results of the different scenarios. In this report the results of the scenarios will be given.