Updating the hydrological and hydraulic studies of the El Potrero Stream in Portezuelo Bay from the Control Works at Laguna del Sauce to its mouth at the site of the future port works for the Punta del Este Marina. The studies determined a baseline for the El Potrero Stream without any works and the influence of the proposed marina works on its operation. The studies analyzed alternative works to mitigate the effects of flooding on neighboring properties. The selected alternative was developed at the Final Project level, contemplating the construction of 1,700 m of riparian defense with mattresses.