Resistivity Prospecting for Groundwater Potential at the Proposed Ibrahim Badamasi Babangida University Teaching Hospital, Lapai, Niger State

DOI: https://doi.org/10.33003/jobasr-2023-v1i1-19

Emmanuel.

A. G.

Tsepav.

M. T.

Yusuf.

T. U

Abstract
Resistivity methods have been increasingly used for aquifer characterisation due to their high level of effectiveness. In this study, electrical resistivity survey was carried out at the Proposed Ibrahim Badamasi Babangida University Teaching Hospital Lapai Niger State Nigeria in order to study the groundwater potential with a view of determining the depth to the bedrock and thickness of the overburden protective capacity. Vertical Electrical Sounding (VES) using Schlumberger array was used to occupy thirty (30) VES stations using ABEM Terrameter (SAS 300) for the acquisition of apparent resistivity data. The field data obtained was analysed using computer software (IPI2win) which gave the secondary geoelectric parameters of depth, layer thickness and layer resistivities. The results revealed heterogeneous nature of the subsurface geological sequence comprising top soil (clayey-sandy and sandy-lateritic), weathered layer, partly weathered (fractured basement) and fresh basement. The resistivity value for the topsoil layer varied from 20Ωm to 600Ωm with thickness ranging from 0.5 to 7.2 m. The weathered basement had resistivity values ranging from 15Ωm to 593Ωm while the thicknesses varied between 2.75 and 33.04m. The fractured basement had resistivity values ranging from 201Ωm to 835Ωm and thicknesses having values between 11 and 20.4m. The fresh basement (bedrock) had resistivity values ranging from 1161Ωm to 3115Ωm with infinite depth. The depth from the earth’s surface to the bedrock surface varied between 2.5 to 47.75m. The VES 10, 11 and 19 had very good overburden protective capacity and can serve as good sites for borehole drilling.
References
Amadi, A., Nwawulu, C., Unuevho, C., Okoye, N., Okunlola, I., Egharevba, N., Ako, T. and Alkali, Y. (2011). Evaluation of the Groundwater Potential in Pompo village, Gidan Kwano, Minna Using vertical Electrical Resistivity Sounding. Journal of Applied Science and Technology,1 (3): 53-66. Ariyo, S.O. Oduwole, M.O and Mosuro, G.O. (2003): Hydro-geopghysical, evaluation of groundwater potentials of Awa-Ijebu, Southwestern Nigeria. Journal of the Nigerian Association of Hydrogeologist (NAH) 14: 31-36. Charles, W. F. (2018). Applied Hydrogeology. Waveland Press. Henriet J.P (1976) Direct Application of Dar-Zarrouk Parameters in Groundwater Surveys. Geophys Prospect 24:344–353 Khaki, (2014). Delineating the characteristics of saline water intrusion in the coastal aquifers of Tamil Nadu, India by analysing the Dar-Zarrouk parameters Lashkapour, A. (2005). Electrical Imaging and Laboratory Resistivity Testing for Geotechnical Investigation of Pusan Clay Deposit. J Appl. Geophys. Maillet, R. (1947) “The Fundamental Equations of Electrical Prospecting,” Journal of Geophysics, Vol. 12, No. 4, 1947, pp. 529-556. Oladapo M.I. and Akintorinwa O.J. (2007). Hydrogeophysical Study of Ogbese Southwestern, Nigeria. Global Journal of Pure and Applied Science, 13(1), 55-61. Tsepav, M.T., Bello Abdullahi and A. A Gbedako, (2014): Geoelectric Investigation of Some Parts of Ibrahim Badamasi Babangida University, Lapai, Nigeria: Physical Science International Journal 4(4): 623-635. Tsepav MT., Ibrahim SI. and Bayegun FA. (2015). Geoelectrical Characterization of Aquifer Precincts in Parts of Lapai, North Central Nigeria. Journal of Apply Science Environmental Management. 19, 295 – 301. Tsepav, M. T., Aliyu, Y. B., Obaje, N. G.and Usman, Y. T. (2021). On the use of electricalresistivity method in mapping potential sources and extent of pollution of groundwater systems in Lapai Town, Niger State, Nigeria. Journal of Physics: Theories and Applications. Vol. 5(1), pp. 18-36. Doi: 10.20961/jphystheorappl.v5i1.51563 Yusuf, T. U. (2016). Overview of Effective Geophysical Methods used in the study of Environmental Pollution by Waste Dumpsites. African Research Review: An International Multi-Disciplinary Journal, Bahir Dar, Ethiopia. Volume 10, Number 2, pp. 124 – 143. Yusuf, T. U., Udensi E. E., Rafiu A. A.,P. C. Eze and Aliyu M. (2018). Investigating groundwater quality and soil cultivation viability using geophysical and geochemical approach at a dumpsite in Mokwa, Niger State Nigeria. Lapai Journal of Applied and Natural Sciences. Faculty of Natural Sciences, IBB University Lapai, Niger State Nigeria. Volume 3, Number 1, 2018, pp. 20 – 35. Yusuf, T. U. (2020). Location and Quality Assessment of Groundwater resources in Mokwa, Niger State Nigeria. Nigerian Journal of Physics. Volume 29(1), pp. 146 – 157. Zohdy A.A.R., 1989. A new method for the automatic interpretation of Schlumberger and Wenner sounding curves: Geophysics, Volume 54, pp9-39.
PDF