Data & Scripts featured in the currently unpublished manuscript (as of 22-12-2022) Fivash et al. 2023: 'Early geomorphic indicators of tidal ecosystem shifts are robust across estuaries'. This study explores the role of micro-topographic patterns on tidal flats as indicators of imminent marsh establishment in three European estuaries, through geospatial analysis and simple numerical modeling. These files include the data and scripts used to create each figure in the manuscript.