Determination of Aquifer Position Using Electric Geophysical Method


  •  Victor Obianwu    
  •  O. Atan    
  •  A. Okiwelu    

Abstract

Aquifer positions were determined by using Schlumberger electrode configuration to conduct Vertical Electrical Soundings in 67 communities within the study area. This study was carried out because of the presence of failed boreholes and manually dug wells in some of the Local Government Areas in the study area. More précis information relating to the exact location of aquifers is therefore needed for successful management of water resources in the area, in the face of dwindling availability of portable water, occasioned by failed boreholes and the need to carter for the increasing population of inhabitants of the area. Interpretation of data showed two to six geoelectric layers. Reflection coefficient and resistivity contrast values greater than 0.9 and 19 respectively, were obtained in some VES stations. Productive shallow and deep aquifer terrains were identified with depth of 60 m and 150 m respectively and resistivity range of 100.0-500.0 ?m for shallow aquifers and 1000-2500 ?m for deep aquifers, respectively. The lithologic materials for the aquifers were sand/sandstone and very coarsed grained sand/fractured basement, respectively. The above inference on lithology was constrained by borehole logs in the study area.



This work is licensed under a Creative Commons Attribution 4.0 License.
  • ISSN(Print): 1916-9639
  • ISSN(Online): 1916-9647
  • Started: 2009
  • Frequency: semiannual

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