Geophysical Investigation of Groundwater Regime: Case Study of Etioro-Akoko Southwestern Nigeria

  • Cyril C. Okpoli Department of Geology and Applied Geophysics, Adekunle Ajasin University, Akungba-akoko, Ondo sate, Nigeria.
  • Emmanuel A. Saba Department of Geology and Applied Geophysics, Adekunle Ajasin University, Akungba-akoko, Ondo sate, Nigeria.
  • Christopher O. Oduneye Department of Earth Sciences, Ladoke Akintola University, Ogbomoso, Oyo State, Nigeria
Keywords: Etioro-akoko, dipole-dipole, schlumberger, modeling and groundwater

Abstract

The electrical resistivity study of Etioro-Akoko has become imperative because of non-functional potable water. The study aims at resolving the geology setup through hydro-geophysical methods and modeling of the wells. Dipole- dipole, Schlumberger array and the positioning of the hand dug wells were carried out in the study area.

Dipole-dipole array results in the study area do not show structures indicative of high groundwater yield potential. Three layers comprising of the topsoil, weathered layer, and the fresh basement were delineated using the Schlumberger array with overburden thicknesses ranging from 4.5-7.7m.The values are too thin to support productive wells. Well inventory (depth to well-base) results ranges from 5.3-7.3m and were used to model the direction of flow pattern of groundwater. The southernmost part of the map is continuously discharged. To tap into the groundwater resources in this area requires detailed geophysical mapping and investigations of the discharge area.

DOI: http://dx.doi.org/10.5755/j01.erem.69.3.5334

Author Biographies

Cyril C. Okpoli, Department of Geology and Applied Geophysics, Adekunle Ajasin University, Akungba-akoko, Ondo sate, Nigeria.
Department of Geology and Applied Geophysics. Lecturer
Emmanuel A. Saba, Department of Geology and Applied Geophysics, Adekunle Ajasin University, Akungba-akoko, Ondo sate, Nigeria.
Graduate of Applied geophysics.
Christopher O. Oduneye, Department of Earth Sciences, Ladoke Akintola University, Ogbomoso, Oyo State, Nigeria
Department of Earth Sciences. Lecturer
Published
2014-10-17
Section
Articles