A model is formulated to describe the flow field locally induced by the propagation of a tidal wave and to evaluate the sediment transport. The three-dimensional Reynolds averaged momentum equations are considered, and Coriolis terms are retained since they affect the tide propagation. Turbulent Reynolds stresses are described by means of the Boussinesq assumption, and the eddy viscosity is assumed to be an assigned function of the distance from the sea bed. The effects of wind waves on sediment transport are taken into account, and both the bed load and the suspended load are computed. A comparison of the obtained results with laboratory data and field measurements shows that the model provides a reliable and accurate description of both the velocity field and sediment transport and does not require high computational costs.