The Threshold Level Exceedance layers show the probability of the GloFAS flood forecast forecasts to exceed 5- or 20-year return periodsperiod. This It is an example shows of two layers displayed together (overlayedoverlaid). The Threshold Level Exceedance layers show the probability of GloFAS flood forecast to exceed 5 or 20-year return period. It is composed of two layers which can be displayed togetherFrom GloFAS v4, the cells above 250km2 are shown.