Aspects related to the sediment transport through the river system and sediment management are still rarely addressed in the design of flood control and river management programmes in Italy. Recently, however, there has been increasing consideration of regional sediment issues, sediment continuity and channel morphodynamic as an integral part of flood protection schemes and future river management. An example is represented by the research project presented in this paper, regarding the mountain basin of the Vara River, in the north-western Italy. The main purpose of the present work is to study the influence of a composite storage tank, designed for flood control, on the sediment transport processes, so that it would be possible to evaluate the impact of the latter on the surrounding lands. We perform a physical model characterized by erodible bed, considering different configurations of the storage tank and different hydrological scenarios with return period ranging from 5 to 200 years. The physical model has been designed to reproduce a fluvial reach 1 km long in geometric scale equal to 1:62.5 and Froude similitude, so to conserve inertial and gravitational effects.We have fed the model with unsteady water and sediment discharge and the bottom topography of the river has been left free to evolve. We also use a mixture of sediments characterized by various diameters to evaluate the selective transport of the different granulometric fraction.