Morphometric properties of an area can influence to a great deal local site effects during earthquakes and earthquake-related secondary effects. When searching for areas susceptible to soil amplification, liquefaction or compaction, the so-called causative or preparatory factors have to be taken into account. These include height level, slope gradient, terrain curvature, lithologic conditions and fault zones. Morphometric factors can be extracted from DEM **data** that might be of importance for the detection of local site conditions influencing earthquake ground motion: Height level maps help to search for topographic depressions covered by almost recently-formed sediments, which are usually linked with higher groundwater tables. Extracting the lowest height level of an area makes visible areas with high groundwater tables. In case of stronger earthquakes, such areas have often shown the highest earthquake damage intensity, compaction and liquefaction occurrence. From the DEM data, flat areas with no curvature of the terrain and low to no slope gradients were extracted.