The focus of this project is on combining a participatory approach and water modeling. The main objective of the project is to strengthen the capacity of the sectors, institutions, and Vietnamese people to adapt and respond to the climate change impacts. It aims to reduce their vulnerability to climate change and disasters by raising their understanding and preparedness to foresee impacts and minimize losses. This objective will be accomplished by undertaking completion of specific objectives: (1) to combine water flow modeling for an entire river basin with participatory management tools for a coastal commune; (2) to study existing and future climate change impacts on water resources in the river basin and understand how poor people’s livelihoods strongly depend on climate and water resource changes; (3) to improve awareness, build a pro-active attitude, and foster preparedness regarding climate change and its impacts among all related stakeholders, especially the most vulnerable communities and individuals; (4) to assess, prioritize and improve the existing adaptation measures with stakeholders’ participation; and (5) to prepare and develop, with stakeholder participation, the optimal feasible adaptation plan and policy at the district level with a view to replicate it at provincial and national levels. The outputs of the project are in the form of data and models, a vulnerability assessment, and a stakeholder action plan for Phu Vang district with information about all possible stakeholders, their interrelationship, and potential obstacles and solutions.