With the Western Mediterranean Basin Water Allocation Plan, which is prepared by taking into account the effects of climate change and drought analysis, it is ensured that the water demand is met fairly, efficiently and abundantly for each sector. Framework of assessment and planning is established considering integrated climate change assessment for adaptation planning for future investments of sectors. Strategic adaptation planning with key stakeholder consultative process is conducted and developed a dynamic adaptive strategy in the target sub-basin for the sub-sectors for future investment. Reuse of treated water was evaluated during water allocation modelling studies.