Fassoni-Andrade A. C. auteur aut IRD Durand Fabien auteur aut IRD Moreira D. auteur aut IRD Azevedo A. auteur aut IRD dos Santos V. F. auteur aut IRD Funi C. auteur aut IRD Laraque Alain auteur aut IRD text journalArticle eng text/pdf reformatted digital access The characterization of estuarine hydrodynamics primarily depends on knowledge of the bathymetry and topography. Here, we present the first comprehensive, high-resolution dataset of the topography and bathymetry of the Amazon River estuary, the world's largest estuary. Our product is based on an innovative approach combining spaceborne remote sensing data, an extensive and processed river depth dataset, and auxiliary data. Our goal with this mapping is to promote the database usage in studies that require this information, such as hydrodynamic modeling or geomorphological assessments. Our twofold approach considered 500 000 sounding points digitized from 19 nautical charts for bathymetry estimation, in conjunction with a state-of-the-art topographic dataset based on remote sensing, encompassing intertidal flats, riverbanks, and adjacent floodplains. Finally, our estimate can be accessed in a unified 30 m resolution regular grid referenced to the Earth Gravitational Model 2008 (EGM08), complemented both landward and seaward by land (Multi-Error-Removed Improved-Terrain digital elevation model, MERIT DEM) and ocean (General Bathymetric Chart of the Oceans version 2020, GEBCO_2020) topographic data. Extensive validation against independent and spatially distributed data, from an airborne lidar survey, from ICESat-2 altimetric satellite data, and from various in situ surveys, shows a typical vertical accuracy of 7.2m (riverbed) and 1.2 m (non-vegetated intertidal floodplains). The dataset is available at https://doi.org/10.17632/3g6b5ynrdb.2 (Fassoni-Andrade et al., 2021). specialized BRESIL AMAZONE ESTUAIRE 062 126 13 5 2275-2291 2021 1866-3508 https://www.documentation.ird.fr/hor/fdi:010081536 10.5194/essd-13-2275-2021 1866-3508 [F B010081536] https://www.documentation.ird.fr/hor/fdi:010081536 https://horizon.documentation.ird.fr/exl-doc/pleins_textes/2021-07/010081536.pdf IRD - Base Horizon / Pleins textes 2021-07-02 2025-02-24 fdi:010081536 fre