HYDRODYNAMICS OF THE BEACH CROSS-SHORE PROFILE José M. Medina-Villaverde 1 1 CEDEX – Ministry for Public Works. Antonio López, 81. 28026 MADRID (Spain) Tel.: +34 91 3357657 Fax: +34 91 3357622 Email: Jose.M.Medina@cedex.es Abstract Models on cross-shore profile are been developed as a useful tool to forecast the motion of the shoreline in the short term. Usually they are restricted to strong conditions, which made them inappropriate in some places. This paper shows the basis of the common and most used models and gives a track to future development. They has been implemented on DPP model. Introduction Most of the works done in the context of the cross-shore profile can fit in the following classification: • Field and laboratory surveys, accounting for the main physical parameters that are involved in the process • Featuring the equilibrium profile • Zonation of the cross-shore profile • Empirical classification of the cross-shore profiles into the bar / berm types. Transitions between tem • Submerged bars: formation, motion and features • Studies in the swash zone