Resistivity Survey For Aquifer Delineattion Using Vertical Electrical Sounding (VES) A Case Study Of Ogbogoro Local Government Area, Port Harcourt, Rivers State, Nigeria

Abstract

This study was carried out within Obio-Akpor Local govt. area of Rivers state to determine groundwater potential
and aquifer properties, to meet rising demand of potable water, arising from steep population growth as well as
enhance supply. The Electrical Resistivity method (VES) technique, Schlumberger configuration and ABEM SAS
300 Terameter was employed to investigate and determine overburden thickness and layer resistivity. The
resistivity data retrieved from the terameter is processed, analyzed and interpreted to determine needed
information such as geology, layer thickness and potential of groundwater in the area. The results were presented
in terms of resistivity, depth and thickness which revealed that the area of study has five geo-electric sections and
an AK- type sounding curve. The geo-electric layers also range from 1.98m-62.27m, while the water table is at a
depth of 40m from the surface. From the interpretation, the area is composed of topsoil and sand.