This dataset features spatially continuous water surface elevation measurements obtained from overhead LiDAR scanners during a series of irregular wave experiments over a small-scale salt marsh and dike system at Delft University of Technology. In addition to the LiDAR data, point measurements of water surface elevation and orbital velocity were collected using wave gauges and electromagnetic flow meters. The dataset includes both raw and calibrated files, organized following a consistent naming convention. Further details regarding the experimental setup, instrumentation, data structure, and calibration methodology are provided in the accompanying document 'read_me.pdf'.