The present thesis focuses on the use of the three-dimensional Smoothed Particle Hydrodynamics (SPH) method to model the propagation of a dam-break wave and its interaction with the area downstream of the dam body. In particular, the Explicit Incompressible SPH scheme was used, which is a variation of the SPH algorithm, where pressure fluctuations and computational effort are largely reduced. This algorithm has been used and validated in the field of two-dimensional simulations, but it is somewhat unexplored in the three-dimensional one. For this purpose, as the first test, the confrontation with a simulation of a dam-break wave carried out with the two-dimensional EISPH scheme and one carried out by Shao & Lo is performed, in order to verify the correct functioning of the algorithm.