This tool is designed to help local authorities to explore pluvial hazard & risk from extreme convective precipitation events and subsequent flooding due to surface rainwater accumulation which the existing urban drainage system is unable to absorb. The tool delineates the areas prone to flooding under different rainfall intensities and persistence and estimates the damage to physical assets such as buildings’ structures and content. The tool is amendable to inform adaptation measures such as green urban regeneration and natural water retention measures by means of green roofs and green urban areas. The application of the tool is amendable to help users to identify existing green urban infrastructures and identify areas suitable to extend them, while controlling for the potential to reduce flood damage or share of affected population. The tool is meant for urban planners, local citizen action groups, civil society organizations, businesses  and risk managers (insurers and insurance brokers).