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With the aim of evaluating the hydraulic risks connected with the construction of a new embankment at the confluence of the Magra Rivera and the Bagnone Torrent, an experimental analysis was conducted usingan undistorted 1:55 scale physical model. A parallel study using thesoftware TELEMAC-2D applied to the same domain as the physical modeland with the same boundary conditions was also carried out. The use of a numerical model enabled comparison of the results obtained from the physical model and a test of the reliability of the numerical model itself in terms of accuracy, stability and instability. In order to estimate the effects induced by the construction of a new embankment, two sets of experiments were carried out; in the first set bed andbank topography before constructed were modelled, and in the second set the actual situation with the embankment was considered. Comparison of data obtained from numerical simulations with measurements fromthe physical model showed a good agreement from a qualitative point of view. However, some differences were noticed in terms of local values, particularly in the bed morphology evolution where estimation ofbed level variations are strongly dependent on the local sediment transport dynamics. [ABSTRACT FROM AUTHOR]