M. Salauddin^1,, R.M.R.M Jayathilaka², C.A. Rey Velasco³

This study aimed to investigate the impacts of coastal developments like marinas on coastal morphology, a practical case study of developing a marina along the coast of Netherlands was selected in this research. A marina needs to be constructed along the coast of Netherlands in the best possible location minimizing the effects of the marina on the coastline. The focus was to keep the coastline of Netherlands intact by strongly focusing on the accretion and erosion areas before choosing a location for the marina. The present research shows the morphological effects of the marina located along the coast of Netherlands. The design vessel, marina layout, location of the marina and effects of constructing hard structures along the coast are also discussed. In this research, regarding to morphological (erosion/accretion) and economical (hinterland) aspects, the best possible location was chosen to construct marina. The model results obtained in this study were expected. It was observed that after constructing the breakwaters, the wave climate at southern side is shielding from northerly waves and on the northern side shielding from southerly waves. As a consequence, the equilibrium of coastline orientation was also affected on both sides leading to very strong accretion on both sides of the marina. Further away from the breakwaters considerable erosion has been taken place, especially in the south of the breakwater.

coastal developments, coastal morphology, coastal structures, marina