The main concept of this study is to estimate the extent of stress
influence by using the observed groundwater level variations and a
given earthquake magnitude. The developed model was applied to
estimate the area of anomalous stress using the intersection
method from several observation stations. The extent of stress
influence facilitates the investigations on anomalous stress caused
by earthquakes. The proposed model can be used to estimate the
hazard potential of a reservoir dam or an underground structure
under the earthquake effect. The method also provides a concept
for estimating the possible areas of anomalous stress for a forthcoming
earthquake