This data set contains supplementary material and the raw data for the JGR paper Weisscher et al (2022). The supplementary material includes the DEMs of three experiments, which were derived from stereo-photography (TIFF format) and from laser-scanning (TIFF format and MAT format). Also, the data package includes overhead imagery in the form of a movie per experiment (MP4 format) and overhead georeferenced photos (PNG format) of the dry bed of two experiments to classify mud and vegetation distributions. The data package also contains the input files (processed DEMs - CSV format; hydraulic roughness maps - TXT format) needed to remodel the tidal flow in Nays2D using the GUI iRIC (consult data package by Weisscher et al 2020 Esurf for installation and instructions). The data package includes the raw (CSV format) and processed (ASC format) output files of the flow modelling in Nays2D. For contact, please mail to: s.a.h.weisscher@uu.nl or m.g.kleinhans@uu.nl.