Coastal Area Prone to Extreme Flood and Erosion Events Induced by Climate Changes: Study Case of Juqueriquere River Bar Navigation, Caraguatatuba (Sao Paulo State), Brazil

The Juqueriquerê Catchment is the major in São Paulo State (Brazil) North Coastline (Fig. 1). The Juqueriquerê Waterway is a 4 km estuarine channel used by small piers and docks. The entrance bar doesn’t have any amelioration works and the boats maneuvers are difficult and dangerous. Beyond environmental impacts, the cost - effective improvements consists to bar jetties calibration, this solution means to talk about costs of 5 M €, or the permanent maintenance with local dredging works, which costs, in the long term of decades, will be the same.