International Journal of
Physical Sciences

  • Abbreviation: Int. J. Phys. Sci.
  • Language: English
  • ISSN: 1992-1950
  • DOI: 10.5897/IJPS
  • Start Year: 2006
  • Published Articles: 2528

Full Length Research Paper

Application of vertical electrical soundings to characterize aquifer potential in Ota, Southwestern Nigeria

A. P. Aizebeokhai1* and O. A. Oyebanjo
1Department of Physics, College of Science and Technology, Covenant University, P. M. B. 1023, Ota, Ogun State, Nigeria. 2Department of Physics/Telecommunication, Tai Solarin University of Education, Ijagun, Ogun State, Nigeria.
Email: [email protected]; [email protected]

  •  Accepted: 13 December 2013
  •  Published: 16 December 2013

Abstract

A knowledge of hydrogeophysical parameters of aquifers is essential for groundwater  resource assessment, development and management. Traditionally, these parameters are estimated using pumping test carried out in boreholes or wells; but this is often costly and time consuming. Surface geophysical measurements can provide a cost effective and efficient estimates of these parameters. In the present work, geoelectrical resistivity data has been used to characterize and evaluate the aquifer potential at Covenant University, Ota, southwestern Nigeria. Some thirty-five vertical electrical soundings (VESs) were conducted using Schlumberger array with a maximun half-current electrode spacing (AB/2) of 240 m. The geoelectrical parameters obtained were used to estimate longitudinal conductance and transverse resistance of the delineated aquifer. Both the longitudinal conductance and transverse resistance, which qualitatively reflects the hydraulic properties of the aquifer, indicate that the aquifer unit is characterized with high values of hydraulic parameters; consequently a good groundwater potential. Thus, groundwater resource development and management in the area can be effectively planned based on these parameters.

Key words: Hydrogeophysics, geoelectrical parameters, resistivity survey, aquifer potential.