The output of a flood early warning system is mostly a combination of observations and model outcomes. However, raw model output (a graph of water levels, for example, some model output) is not the same as actionable impact information. One level of information is to show where a possible flood will occur.
Figure 1: Spatial overview: where is the risk?
The next level is to also be able to tell what the effect of this flood will be on the road network. Will the hospital still be accessible? What actions can I (as responder) take to mitigate risk?
Figure 2: Warning in the context of action: Actionable information
The aim of this MSc thesis work, is to investigate how the criticality tools can be used to augment flood forecasts. An example can be seen here: https://arcg.is/1uGm5W0 .