ELECTRICAL RESISTIVITY SURVEY FOR GROUNDWATER POTENTIAL AND ESTIMATION OF CLAY DEPOSIT IN ARAGBA-OKPE, OKPE LOCAL GOVERNMENT AREA, DELTA STATE NIGERIA
Electrical resistivity survey employing Vertical Electrical Sounding techniques of Schlumberger arrangement were carried out at seven (7) fairly distributed stations with 154 Vertical Electrical Soundings in Aragba-Okpe. The data obtained from the field were plotted on a log-log graph and interpreted qualitatively by inspection and quantitatively by partial curve matching. The results obtained were improved with the aid of computer iteration using the Winresist Software to delineate the thickness and depth of each layers as well as the resistivity value. These layers were grouped together in to geologic depth intervals known as the Geoelectric sections for interpretations. Using knowledge of both the local geology of Aragba-Okpe and the resistivity of the layers, the Geoelectric sections were interpreted. The study revealed that boreholes for sustainable water supply could be drilled to a depth of 30 m in Aragba-Okpe, However, the fifth layer within Aragba Primary School, Aragba Secondary School and Oviri Aragba Road (VES 1, 5 and 7) are the best locations for sustainable water supply
The overburden protective capacities of the aquifer in Aragba-Okpe were evaluated using the Dar-zarrouk parameters. The result also revealed poor aquifer protection ratings of less than 0.1 in all the stations. The groundwater in Aragba-Okpe is therefore not protected and prone to contamination in the event of pollution.
Egbai, J. C. (2011). Vertical Electrical Sounding for the investigation of clay deposit in Orerokpe. Delta State. Journal of Emerging Trends in Engineering and Applied Sciences (JETEAS), No. 2 (2), 260 – 265. [in English].
Egbai, J. C., Efeya, P. & Iserhien-Emekeme, R. E. (2015). 2D Geoelectric Evaluation and Imaging of Aquifer Vulnerability of Dump Site at Ozoro Isoko South L.G.A of Delta State. Journal of Natural Sciences Research, Vol. 5, No. 10, 1 – 11. [in English].
Ezomo, F. O. & Aiyohuyin, E. O. (2012). Existence of sandstone deposit in Isihor Village Area of Edo State. Nigerian Journal of Science and Technology, Vol. 1, No. 8, 405 – 410. [in English].
Ezomo, F. O. (2012). Geophysical study of clay attributes in Iruekpen Village Area of Edo State Nigeria. Journal of Emerging Trends in Engineering and Applied Sciences (JETEAS), Vol. 3 (3), 563 -566. [in English].
Okolie, E. C., Osemeikhian, J. E. A., Atakpo, E. A., & Oseji, J. O. (2005). Geophysical Investigation of the source of River Ethiope in Ukwuani Local Government Area of Delta State. Nigeria Journal of Physics, Vol. 17, 21-26. doi.org/10.4314/njphy.v17i1.37987. [in English].
Oladapo, M. I. & Akintorinwa, O. J (2007). Hydrogeophysical Study of Ogbese Southwestern. Nigeria Global Journal of Pure and Applied Sciences, Vol. 13 (1), 55 -61. [in English].
Oseji, J. O. (2011). Surface Geoelectric Sounding for the Determination of Aquifer Characteristics in Aboh and Environs Delta State. International Journal of Research and Reviews in Applied Sciences (IJRRAS), Vol. 6 (2), 230 – 235. [in English].
Oseji, J. O. (2014). Application of Vertical Electrical Sounding Method to Decipher the Existing Sub-Surface Stratification and Groundwater Occurrence Status in Orogun Main Town, Delta State, Nigeria. Journal of the Nigerian Association of Mathematical Physics, Vol. 27 (July), 301 -314. [in English].
Otutu, O. J. (2013). Investigation of the Groundwater Resources and Aquifer Characteristics in Utagba-Uno Area, Delta State, Nigeria Using Surface Geoelectric Sounding. Journal of the Nigerian Association of Mathematical Physics, Vol. 25 (Nov.), 157-172. [in English].
Sørensen, K. I., Auken, E., Christensen, N. B., & Pellerin, L. (2005). An Integrated Approach for Hydrogeophysical Investigations: New Technologies and a Case History. In D. K. Butler (Ed.), Near-Surface Geophysics (Vol. 13, pp. 585-605). USA: Society of Exploration Geophysics. Investigations in Geophysics, Vol.. No. 13. [in English].
Vande Velpen, B. P. A. (2004). Win Resist Version 1.0 M. Sc Research project, ITC, Deft, Nertherlands. [in English].
Zohdy, A. A. (1974). Automatic Interpretation of Schlumberger Sounding Curves. Geological Survey Bulletin, Washington: 1313-E US Government Printing Office. [in English].
Zohdy, A. A., Eaton, C. P., & Mabey, D. R. (1974). Application of Surface Geophysics to Groundwater Investigation. Tech. Water resources Investigation. US Geological Survey, Washington D.C., 2401 – 2543. [in English].
Abstract views: 32 PDF Downloads: 28