Unmanaged extraction of ground water coupled with global warming, sea level rise and tsunami after effects have resulted in continuous change within fresh water bodies in coastal zones. Changes in water bodies directly relate to changes in catchments characteristics, which also interact with socio-economic changes. This project investigates changes in coastal zones caused by salinity intrusion, and covers both the catchments socio-economic trends and the water bodies. It involves six APN countries and targets a model that will aid policymakers to manage the changes occurring in coastal zones by taking optimal decisions with multiple objectives.