Adverse consequences of floods are aggravated by human activities increasing exposure and vulnerability together with climate change effects that intensify extreme events. The concept of Integrated Flood Management (IFM) is essential to consolidate flood risk reduction and sustainable development. However, there is still gap between scientific knowledge and actions taken by the society, especially decisions and designs by the policy makers and practitioners, and a lack of inter-agency coordination in flood management actions. International Flood Initiative (IFI) has developed a new stratefy to implement IFM and contribute to achieve the targets of the Sendai Framework, SDGs and Paris Agreement. The essential step in implementing this strategy is the establishment of the Platform(s) on Water and Disasters to bring together science, policy and society and enable effective inter-agency coordination as well as smoother collaboration with global networks. This project will establish and strengthen the platforms in participating countries, will develop prototype operations and will contribute to their full functionality. In selected pilot basins, an advanced real-time flood forecasting and risk assessment system will be developed through cooperation among the platforms, IFI partners, ICHARM and the University of Tokyo DIAS team. Analyses of platform operation system benefits for water-related disaster risk reduction will be carried out and integrated into synthesis reports.