An electrical tomography section was developed using direct current resistivity (DCR) data, a Schlumberger array with a two-dimensional (2D) inversion technique, and traditional four-electrode equipment. The problem is that one-dimensional (1D) DCR isn't always able to fully resolve the intricacy of the subsurface geology. The 2D resistivity section has the benefit of providing additional information on subsurface structures. The major objective of the inverse issue that must be solved during the inversion process is to identify the resistivity distribution response that most closely matches the reported vertical electrical sounding (VES) data. This study is being performed to detect structural lineaments and seawater intrusion (SWI), which have an impact on the studied region. The study has been successful in detecting sets of lineaments. As a result, it was easier to identify several resistive layers that had resistivity values greater than 30 Ω.m at 50–100 m and even lower depths (above 150 m). Low-resistivity saturated limestone (< 5 Ω.m) is a representative of the SWI zone. Furthermore, the 2D porosity section analysis shows how aquifers are connected, which is defined by structures that resemble channels. The particular significance of this study lies in its ability to convert 1D DCR to 2D tomography and help developing countries that don't have access to expensive multielectrode system equipment keep up to date with technology. Similar conditions can be found in other complex geological coastal locations where the same scientific method might be applied.