Geophysical Investigation of Groundwater Potentials Using Vertical Electrical Sounding: Case Study of Boh Shongom Local Government Area Gombe State, Nigeria

Author(s)

Kamureyina Ezekiel^1*, Mohammed Ali Garba², Musa Hayatudeen³, Benjamin Odey Omang⁴; ¹Department of Geology, Adamawa State University, Mubi Nigeria, ²Department of Geology, Gombe State University Nigeria, ³(Geophysics group), Department of Physics, Federal University Kashere, Gombe State Nigeria, ⁴Department of Geology University of Calabar Cross River State Nigeria.

Abstract

Thirteen (13) Vertical Electrical Sounding (VES) were carried out around Boh and its environs, employing Schlumberger array with a maximum electrode separation of AB/2 = 100 to determine locations favorable for sitting boreholes. The data obtained were processed and interpreted using Win Resist program. The results showed that ten (10) VES points displayed three layers, two (2) VES points displayed Five layers with only one (1) VES point with four layers. Geo-electric cross section revealed that the area is underlain by three geo-electric layers in some VES points and Five in others, top lateritic soil, weathered/fractured and fresh basement. The first layer has resistivity values of 13.7 to 118Ωm The second layer is a weathered/fractured basement with a resistivity of 29.3 to 1661.5Ωm and thickness of 5.7 to about 50m which constitute the aquiferous zones and the third/fourth and fifth layer is fractured/fresh basement with resistivity values of 353.5 to 3692.8Ωm. Base on the interpretation of curves of VES points and Geo-electric cross sections constructed; VES 2, 5, 6, 7, 9, 11 and 13 have good prospects for sitting and development of boreholes.

Keywords

groundwater; resistivity data; resistivity curves; geo-electric section; Boh

Cite this paper

Ezekiel, K., Garba, M. A., Hayatudeen, M., Omang, B. O. (2023), Geophysical Investigation of Groundwater Potentials Using Vertical Electrical Sounding: Case Study of Boh Shongom Local Government Area Gombe State, Nigeria, IRESPUB Journal of Natural & Applied Sciences. Volume 2, Issue 3, May-Jun 2023, Page 1-15

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