A risk map is prepared by combining flood maps with information on the location of values (buildings, roads, etc.) that may be damaged. The mapping shows how big the risk of flooding is in connection with various precipitation events, and is often illustrated by the use of risk maps, which show the expected annual damage within a given catchment area (sewer/hydrology).

At LNH water, we have extensive experience with risk mapping, and our analyzes always follow the latest guidelines and recommendations in the field. Our flood map is prepared by calculations made with a dynamic hydraulic model based on a hydrologically adapted height model. Our value mapping is based on the national standard damage values, but will also in many cases be adapted to the local context, where better data may be available.

We collaborate with DTU on the development of better tools for socio-economic analyzes in connection with climate adaptation to floods from cloudbursts and storm surges. DTU’s model for Damages Economics for calculating damages from floods across sub-components (e.g. buildings, companies, transport, health etc.) is now available from the link below. The model is made as an ArcGIS model and is free with proper credit. Download the model here.

Contact Per Skougaard Kaspersen for more information on what we can offer in relation to risk mapping.