GROUNDWATER INVESTIGATION USING ELECTRICAL RESISTIVITY METHOD IN A BASEMENT TERRAIN OF SANNGO ELERE, ERUWA, SOUTHWESTERN NIGERIA

Adedokun Damilola Rukayat, Ishola K.S., Alli Adnan Karram and Ibitomi Michael Adewale
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Adedokun Damilola Rukayat: Department of Physics, Lead City University, Ibadan, Oyo State, Nigeria
Ishola K.S.: Department of Geosciences, University of Lagos, Akoka Lagos
Alli Adnan Karram: Department of Physics, Lead City University, Ibadan, Oyo State, Nigeria
Ibitomi Michael Adewale: Department of Mineral and Petroleum Resources Engineering, Kogi State Polytechnic, Lokoja

Pakistan Journal of Geology (PJG), 2024, vol. 8, issue 1, 44-56

Abstract: Groundwater Investigation was carried out using Electrical Resistivity Method at Sanngo Elere, Eruwa. There are many hand-dug wells in the study area but there is no evidence that groundwater exploration has been carried out in the area. Vertical Electrical Sounding (VES) was carried out in the area with the aim of determining viable aquiferous zone. Twenty (20) VES were carried out using Schlumberger electrode array configuration. The VES data generated were processed and interpreted using partial curve matching method and computer iterative modelling software called win resist. The interpreted data revealed three to five geoelectric sections consisting of the topsoil with resistivity ranging from 149 to 1407Ωm. Weathered/party weathered layer with resistivity and thickness values ranging from 131 to 2082Ωm and 1.0 to 14.2m respectively. A partly weathered/fresh basement rock with resistivity and thickness values that ranges from 45 to 3297Ωm and 2.6 to 21.6m. also a fresh basement rock with resistivity values that range from 1020 – 8744Ωm. On the bases of the resistivity and thickness of fracture zone, twelve out of 20 VES points are promising location for prolific borehole. The values of computed reflection coefficient were further used to confirm water bearing fractures. Electrical Resistivity Survey has been successfully utilized for groundwater exploration in the study area.

Keywords: Groundwater Exploration; aquiferous zone; computer iterative; Electrical Resistivity; Reflection coeffient (search for similar items in EconPapers)
Date: 2024
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Persistent link: https://EconPapers.repec.org/RePEc:zib:zbnpjg:v:8:y:2024:i:1:p:44-56

DOI: 10.26480/pjg.01.2024.44.56

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