The aim of this study is to investigate the performance of SWOT in generating intertidal Digital Elevation Models (DEMs) using the waterline method. To this end, tests were made by generating intertidal DEMs from SWOT-type observables for two intertidal bays situated on the French coast: the Arcachon Bay and the Bay of Veys. SWOT-type observables were simulated using the SWOT Hydrology Toolbox developed by the French space agency (Centre National d'Études Spatiales (CNES)). By comparing SWOT-derived DEMs to the validation DEMs, SWOT showed a great potential for monitoring intertidal topographies. Mean Absolute Errors (MAEs) and Root Mean Square Errors (RMSEs) reached respectively 5.2 cm and 8.4 cm for the Arcachon Bay and 10.2 cm and 17.3 cm for the Bay of Veys. However, the accuracy of SWOT-derived DEMs is dependent on SWOT's orbit.