Geophysical Investigation of Groundwater Level Using Vertical Electrical Sounding (A Case Study of Ewu in Edo State Nigeria)

  • Idiegbe Onoriode Gilbert
  • Atumah Oyibo Lawrence

Abstract

Abstract- In this research work, four Vertical Electrical Soundings (VES) were carried out in Ewu Town at various locations: Eguare-Ewu, Idunwele-Ewu, Flour Mill Road-Ewu and Eko-Ewu using the ABEM terrameter, by employing the Schlumberger electrode configuration system to determine the level of groundwater.  From the analysis of field data and results of computer iteration, a maximum of four geoelectric layers were obtained.  The first layer of geoelectric section was the lateritic top soil with thickness of 1.21m and 11.1m, for VES 1 and VES 2, with apparent resistivity of 438Ωm and 183Ωm.  The possible aquiferous zone for sustaining groundwater are within the second and third layers for VES 1 and the fourth layer for VES 2, at a depth of 2.67m – 47m and infinity respectively.  The apparent resistivity of the aquiferous layers of VES 1 and VES 2 are 797Ωm and 362Ωm respectively, which is fine sand layer.  The apparent resistivity of the aquiferous layers of VES 3 and VES 4 are 5511Ωm and 129Ωm respectively with infinity thickness.


 Key words: Geoelectric layer, aquiferous layers, groundwater

Published
Jun 24, 2017
How to Cite
GILBERT, Idiegbe Onoriode; LAWRENCE, Atumah Oyibo. Geophysical Investigation of Groundwater Level Using Vertical Electrical Sounding (A Case Study of Ewu in Edo State Nigeria). International Journal of Research in Science, [S.l.], v. 3, n. 2, p. 22-27, june 2017. ISSN 2412-4389. Available at: <http://researchplusjournals.com/index.php/IJRS/article/view/271>. Date accessed: 25 sep. 2017. doi: http://dx.doi.org/10.24178/ijrs.2017.3.2.22.