SEAWAD aimed to gain new knowledge on the processes driving sediment transport and benthic species distribution in dynamic delta environments. A large-scale field campaign has been carried out on the ebb-tidal delta of Ameland Inlet, a basin of the Wadden Sea in the Netherlands. The dataset obtained from the field campaign consists of: (i) bathymetry data from single beam and multibeam measurements; (ii) flow, waves, sediment concentration, conductivity and temperature, bedforms and pressure; (iii) bed composition and macro benthic species from boxcores and vibrocores; (iv) discharge measurements through the inlet; (v) X-band radar; (vi) meteorological data.