Next to our observation area on the beach, pressure sensors have been installed on large posts. With the help of these sensors the wave heights and wave lengths can be measured. This data will be used to accurately model how much sand is transported with the wave and tides towards the beach and from there towards the dunes. The combination of our laser scanner data with as many other data sources as possible gives a unique opportunity to study interactions between different influences on sand transport in our observation area and improve the knowledge of the ‘big picture’.