Developing a clay erosion model for levee landside slopes in case of wave overtopping : progress report 2024 Sito-PS Kennis voor Keringen DE1

Erosion of the landside slope by overtopping waves is one of the main failure mechanisms of dikes leading to a flood. The erosion process of the clay liner on the landside slope is not fully understood and no adequately validated erosion model for clay erosion is available for dikes in the Netherlands. The goal of this research is to develop an erosion relation for clay erosion on the landside slope by wave overtopping representative for the dikes in the Netherlands. Such a relation provides the possibility to take this step in the failure path to flooding into account. This will lead to a less conservative and more accurate flood probability estimate, because currently the probability of a flood in case of wave overtopping in combination with a failed revetment is assumed to be one. and lacks the strength of the underlying clay layer.