Geoelectric Assessment of Groundwater Potential in Erin-Ile Basement Region Complex of Southwestern Nigeria
Loading...
Date
2025
Journal Title
Journal ISSN
Volume Title
Publisher
Nig. J. Pure & Appl. Sci.
Abstract
This study presents a geoelectric evaluation of groundwater potential in Erin-Ile, situated in the basement
complex terrain, utilizing Vertical Electrical Sounding (VES) to delineate lithological layers and assess aquifer
characteristics. The study area relies entirely on groundwater for daily water supply, leading to challenges such
as low borehole yields and increased water demand due to population growth and infrastructure development.
The resistivity and thickness parameters analyzed to understand the subsurface hydrogeological structure.
Notably, the study employs H-Type and KH-type curves to categorize lithological layers as lateritic soil,
weathered basement, and fractured/fresh basement. Groundwater potential analyses consider aquifer resistivity,
thickness, hydraulic conductivity, and transmissivity. The results indicate varying groundwater potential across
the 50 VES points, with transmissivity ranging from -931.6 to 474.37 m²/day. Of these points, 74% are classified
as having moderate potential, 24% as having low potential, and 2% as having negligible potential. No locations
were identified with high or good groundwater potential. The southwestern part of the study area is
predominantly characterized by moderate groundwater potential. This research contributes valuable insights into
the hydrogeology of Erin-Ile, offering a foundation for sustainable groundwater resource management. This
study provides valuable insights into the hydrogeology of Erin-Ile, emphasizing the importance of geoelectric
methods in assessing groundwater potential. The findings highlight opportunities for improving groundwater
resource management and optimizing water supply infrastructure.