Geoelectrical Evaluation of Groundwater Occurrence in Anwai, Delta State, Nigeria

Abstract

The purpose of carrying out this survey is to determine the groundwater occurrence in Anwai, Nigeria. Eight geoelectric soundings were conducted using the Schlumberger configuration. The data obtained were interpreted using two layer model. The result revealed the presence of five geoelectric layers made up of topsoil laterite, clay-clayey sand, fine-medium grain sand, coarse sand, medium coarse sand and very coarse sand. The fifth layer with a depth range of 33.4 to 47.2 m and resistivity range of between 1512 and 3294 Wm is identified as the aquifer layer from which groundwater can be sourced. It is deduced from this survey that groundwater development is viable in the area.

Keywords: Groundwater, Geoelectric, Aquifer, Electrical Resistivity, Schlumberger Configuration