Subsurface Characterization Using Geoelectrical Sounding in Canaan-City Estate, Ota SW Nigeria: Implications for Groundwater Exploration

Well-drilling for groundwater exploration is often costly, thus it is imperative to avoid drilling dry borehole and low-yield borehole. Geoelectrical soundings were conducted in the new Canaan-City residential estate of Canaan land Ota, Ogun state. The results of VESs from the study area revealed five to six layers of five geoelectrical units which consist of the Topsoil, Sandy clay, Lateritic clay, confining bed (clay) and Main aquifer (sand). The depth to the top of the main aquifer is in the range of 40–112.4 m. The research has further revealed that the aquifer architecture in this area is complex with undulating topography of the depth to the main aquifer. Geophysical investigations are therefore recommended in this area for groundwater exploration to be able to drill into the actual main aquifer in the area.