João P. Leitão is a Senior Scientist at the Department of Urban Water Management of Eawag (Swiss Federal Institute of Aquatic Science and Technology). His research and consultancy interests are in urban water systems and geographic information systems (GIS), particularly in the development and testing of models to predict flood inundation extent and in the development of flood risk assessment methodologies. Moreover, João's current research focus on the development of novel methods to take advantage of ubiquitous image data, e.g. from social media images and surveillance systems, to better understand urban flood behaviour and support flood risk management. Other research topic João is currently investigating relates to the development of asset management tools to improve urban water systems performance and sustainability.