...
The forecasted impact level in each river catchment is shown as one of four levels: low (yellow), moderate (orange), high (red) and severe (purple). The impact level is estimated using a risk matrix to intersect a flash flood hazard forecast with static exposure data of population and critical infrastructure. Both the flash flood hazard and the exposure data are split into three categories to create the risk matrix (see an example in the left hand side of Fig. 1).
| View file | ||||
|---|---|---|---|---|
|
Figure 1: Example of the Radar-based river flash flood impact catchment summary layer for 0-6 hours on the 31st August 2022 at 00:00 UTC near Strasbourg, France. River catchments where flash flood impacts are possible are shaded according to their classification on an impact matrix (shown on the left side of the figure), which can be displayed when a catchment is clicked. Additional exposure information is given in a table at the bottom of the pop out window (shown in the bottom left of the figure).
...