Geoelectric Assessment of Groundwater Prospects in Supare Estate, Supare Akoko, Southwestern, Nigeria

The geoelectric assessment of the groundwater prospects in Supare Estate, Supare Akoko, Southwestern Nigeria, has been carried out in this study. The study area is underlain by Precambrian Basement Complex rocks of Southwestern Nigeria. These rocks are inherently characterized by low porosity and permeability. The interpretation of fourteen (14) vertical electrical sounding (VES) using the Schlumberger electrode array shows four geoelectric layers in the subsurface within the study area. These are the topsoil, weathered layer, partially weathered/ fractured basement and fresh basement. The overburden thickness varies from 2 to 18 m across the study area. This was used to prepare the groundwater potential map which assisted in the zoning of the area into low, medium and high groundwater potential zones. About 85% of the study area falls within the low/medium rated groundwater potential zone while the remaining 15% constituted the high groundwater potential zone. Hence, the groundwater potential rating of the area is considered generally low.