In this dataset we manually reproduced and we share as a shape file the flood extent derived by the National Observatory of Athens BEYOND team, through the processing of a WordlView-4 satellite high resolution (31 cm) image on 21/11/2017 and with ground observations, of the flood event which hit Mandra, Athens, Greece in 15th of November 2017 (Bellos et al., 2020). It is available online by BEYOND team at http://beyond eocenter.eu/index.php/web-services/floodhub). Another one flood dataset is provided in: https://zenodo.org/record/7140750 References Bellos, V., Papageorgaki, I., Kourtis, I., Vangelis, H., Kalogiros, I., Tsakiris, G. (2020). Reconstruction of a flash flood event using a 2D hydrodynamic model under spatial and temporal variability of storm. Natural Hazards, 101(3), 711-726. The dataset is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License (https://creativecommons.org/licenses/by-sa/4.0/): CC BY-NC-SA) You are free to: Share — copy and redistribute the material in any medium or format; Adapt — remix, transform, and build upon the material, for not commercial use, under the following terms: 1) Attribution — You must give appropriate credit, provide a link to the license, and indicate if changes were made. 2) You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. 3) ShareAlike — If you remix, transform, or build upon the material, you must distribute your contributions under the same license as the original.