Abstarct: Geophysical studies for power stations of Dez dam were carried out to investigate the geological characteristics, the thicknesses of the laxyers, the depth of the bedrock and also the locations of the subsurface anomalies in Telehzang area, situated northeast of the Andimeshk city. A sum of 54 locations on 5 lines, having northwest-southeast trend, was considered for resistivity sounding surveys using the Schlumberger array. In this research thesis, one-dimensional (1-D) interpretation of the resistivity sounding data has been carried out using IX1D software. Moreover, two-dimensional (2-D) interpretation of the resistivity sounding data has been carried out using IPI2Win and Res2dinv software packages, in which geoelectric cross-sections of the study area have been shown. The results of the 2-D interpretation of the resistivity data indicate higher resistivity values in the northern parts of the study area. Furthermore, in the study area, 4 seismic profile lines, having northwest-southeast trend, were considered in which each profile contained 24 geophones with an equal distance of 8 or 10 meters between successive geophones. For 2-D modeling of the seismic tomography data, SeisImager/2DTM software was used. This 2-D seismic tomography data modeling was made using 10 iterations. The results of the electrical and seismic data modeling indicate that, in general, the subsurface laxyers in the study area are composed of two parts: alluvium and bedrock. The alluvium part, having a small thickness, consists of clay, sand and medium- to coarse-grained gravels. The bedrock part is also composed of massive limestone of Bangestan formation.