Wave overtopping is not easy to measure in real field situations. A 12-years long program started in 2018 to measure wind, wave and water level conditions in a complex estuary, together with wave overtopping measurements at dikes. Wave and water level conditions are measured directly in front of the dike. Overtopping is measured with two overtopping boxes that were placed in the dike at different levels. In recent years, a system was invented that measures wave run-up and wave overtopping with two parallel lasers. The laser scanner system was placed next to the overtopping boxes to enable a proper validation. This paper describes the storms that have been measured up to now, including new measurement devices, improvements to measurements and new analysis methods. This all brings new insights, but more storms and improvements of measurements are needed to come to a full understanding of this complex estuary.
