Cost-effective mapping of urban flood risk using MIKE 21 Flood Screening Tool (FST)

In this one-day course you will learn to apply a methodology (using MIKE 21 FST) by which only the surface runoff of the excess part of the rainfall volume is modelled. This enables you to map large geographic areas with limited time and effort. The course includes a step-by-step review of the modelling approach - from initial DEM processing to result presentation as well as hands-on exercises.

Mapping the effects of extreme rain events can be time consuming and thereby costly if models of storm water systems for entire cities are to be established. In many cases, necessary information on the geometry of pipes and gullies is also unavailable. During an extreme rain event, only a limited portion of the rain volume is gathered by the existing storm water system or has time to infiltrate.

Floods caused by extreme rain events are an increasing problem for cities of all sizes world-wide. Densifying of urban developments and climate change are stress factors which increase the pressure to deal with the problems. Pluvial flooding and climate change are new topics on most city planners’ agendas.


  • Introduction to pluvial flooding
  • Overview of pluvial flood modelling tools and techniques - advantages and disadvantages
  • Data need and their use
  • Processing and preparation of digital elevation model (DEM)
  • Case studies
  • Result presentation
  • Mapping flood risks, values and economic costs related to flooding 
  • Strategies to manage surface runoff within existing and planned developments
  • Hands-on exercises with MIKE 21 FST


Professionals who work with city planning, climate change, risk assessment and software tools for flood management in municipalities, regional organisations, water supply and sewage companies. Priority is given to participants with computer modelling experience. It is preferable but no condition that participants have knowledge of MIKE 21 and ArcGIS.