My PhD research project is part of the All-Risk program: “Implementation of new risk standards in the Dutch flood protection program” and focusses on the modelling of wave overtopping erosion for flood defence reliability. During storms, waves overtop the dikes and cause erosion on the landward side of the dike. The erosion due to wave overtopping can lead to a dike breach. For this reason, it is important to determine the probability of dike failure due to wave overtopping. The goal of the project is to model the erosion due to wave overtopping and determine the probability of failure related to this mechanism. Also, the erosional effects of transitions is dike cover will be determined, with special attention for embedded objects, for example a road, stairs or windmills.