This is the author accepted manuscript. The final version is available via the link in this recordIn the paper, we present an innovative application that allows stakeholders to interactively visualise the evolution of flooding and its impact to critical infrastructure using a standard web browser without any other software requirement. The system can demonstrate not only the maximum flood extent on a plain map, but also spatiotemporal varied information in 3D for any locations within the modelling domain that a user specifies. It can also be linked to online real-time flood modelling and risk assessment tools to provide risk-based early warning such that decision makers can prioritise emergency response actions to better protect critical infrastructure during extreme flood events.The work presented in this paper was partially funded by the ongoing H2020 EC project EU-CIRCLE (2015-2018), GA 653824
