Therefore, before defining the risk, first hazard and vulnerability of the case should be specified
clearly. Mitigation plan for a disaster management includes reconstruction and preparedness stages
for the disaster event. Since we know the extent of the hazard in terms of source of the waves caused
by earthquake, affected zones can be determined by using GIS. The inundation map formed in GIS
environment is used for this purpose. The intersections of the building and road layers and inundation
map layer have been used to detect the buildings affected by tsunami waves. Besides this, zonal
statistics tool has been used to extract the elevation information from DEM. Finally, by considering
the inundation possibility and elevation parameter, a risk map has been prepared for Göcek after the
tsunami (Figure 5).