ABSTRACT

The electrical resistivity imaging (ERI) method was conducted at University of Benin, (UNIBEN) Benin city Edo state axis. This study intends to explore the potential for groundwater resources in the study area. The greatest way for locating groundwater is ERI, a technique that doesn't alter the composition or functionality of the soil. ERI survey is concerned with the resistivity (Ωm) value of subsurface rocks. The Dipole-Dipole Wenner and Schlumberger array configuration were used for this study, and a total of 2 survey lines were used. Each survey line was 200 m long, with 10m between electrodes. ABEM Terameter Signal Averaging System (SAS) 300 was used to record all the data, IX1D and Dipro software were used to process it. The findings indicate fluctuating resistivity with a range of 1-3000 Ωm and an inquiry depth of roughly 50 for the profiles. High resistivity zones of 2000 Ωm indicate presence of coarse sand whereas low resistivity zones of 295-400Ωm reveal values for the clay deposit and a layer of low-medium resistivity value of 480-905Ωm indicate wet sand, which is viewed as a potential water carrying zone. The Vertical Electrical Sounding probed up to depth of 60m reflected a higher resistivity ranging from 1 to up to 14,000 Ωm revealing five lithologies layers ranging from sandy top soil, silt to sandy clay, sandy clay, sandstone to clay.