Only those who are aware of the dangers and risks can take targeted protective measures and prioritise key areas.

Dr Klaus Piroth, Division Director

Why do we recommend heavy rainfall risk management to our clients?

Dr Klaus Piroth: Heavy rainfall can affect anyone. Its impacts can vary greatly depending on the location. Using hazard and risk maps for heavy rainfall, site-specific measures can be identified, helping people to prepare as best as they can. Increasingly, local communities are aware of the issue and actively seek advice. Only by knowing who or what is at risk, can we develop appropriate protection measures and set priorities.

What aspects must be considered in heavy rainfall risk management?

Dr Klaus Piroth: The process begins with the creation of hazard maps, which indicate areas likely to flood during a localised heavy rainfall event. Flow velocities are also important, especially in steeper terrain. By overlaying these maps with land-use data, risk maps can be produced. These highlight where damage is likely and where lives may be at risk. In a third step, action plans are developed – ranging from technical interventions to preventive measures and protection strategies for people and property.