The project aims to adapt the code of the TELEMAC-2D software to create a digital tool adapted to the realization of diagnostics of risks of breakage of dykes. This software, developed by EDF in collaboration with other French and international organizations, models, predicts and optimizes the understanding of water-related flows on different types of hydraulic structures. Due to a lack of data, it is not suitable for understanding and anticipating the formation of breaches within dikes composed of alluvial materials that protect homes, crops, and economic activities during floods of the Rhone. A set of dyke failure tests consisting of large and small-scale alluvial materials will be conducted between September 2024 and December 2027. The data collected will be modelled and integrated into the TELEMAC-2D software. Accessible in open source, it will make open access available to engineers in the field of embankment dykes and dams, a robust methodology combined with powerful hydraulic numerical modelling tools.