NIGERIAN JOURNAL OF SCIENCE AND ENVIRONMENT
Journal of the Faculties of Science and Agriculture, Delta State University, Abraka, Nigeria
ISSN: 1119-9008
DOI: 10.5987/UJ-NJSE
Email: njse@universityjournals.org
ELECTRICAL RESISTIVITY SURVEY FOR GROUNDWATER EXPLORATION IN PARTS OF AGBOR, DELTA STATE, NIGERIA.
DOI: 10.5987/UJ-NJSE.17.079.3 | Article Number: 264DF05 | Vol.10 (3) - December 2011
Author: Egbai J. C.
Keywords: resisitivity, VES, aquifer, geological section, groundwater potential
Vertical Electrical Sounding (VES) is the most widely used geophysical techniques for groundwater prospecting. However the interpretation of VES has been subjected to several indistinctness and efforts are on to tackle them. Electrical soundings using the Schlumberger configuration were carried out in Agbor, Ika South Government Area of Delta State to determine the hydrogeological settings in terms of depth of aquifer and effect of topography of the town. These were carried out in ten different locations with maximum current electrode separation of 800m which expectantly represent the whole area of research. The resistivity data is then interpreted by curve matching and computer iteration where the geological model parameters and curves were obtained. Three to six geological layers were observed within the whole locations. These ranges from topsoil, laterite, coarse grained sand, clay, clayey sand, and fine sand. The resistivities for the whole locations ranges from54.0m to 7526m and thickness from 0.4m to 193.6m. Some boreholes drilled and logged within the area of the research correlated very well with the interpreted geoelectric data.
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