ESTIMATION OF AQUIFER TRANSMISSIVITY FROM GEO-PHYSICAL DATA. A CASE STUDY OF COVENANT UNIVERSITY AND ENVIRONS, SOUTHWESTERN NIGERIA

Joel, E. S. and Olasehinde, P.I and De, Dilip Kumar and Omeje, Maxwell and Adewoyin, O.O (2016) ESTIMATION OF AQUIFER TRANSMISSIVITY FROM GEO-PHYSICAL DATA. A CASE STUDY OF COVENANT UNIVERSITY AND ENVIRONS, SOUTHWESTERN NIGERIA. Sci.Int.(Lahore), 28 (4). pp. 3379-3385. ISSN 1013-5316

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Abstract

The combination of geoelectric resistivity layer and thickness in the Da-zarrouk parameters (such as longitudinal conductance and transverse resistance) has been proved to be useful in the evaluation of aquifers transmissivities around Covenant University and its environs. It was observed that the study area is underlain by the unconsolidated to semi-consolidated Coastal Plain Sand (Benin Formation). Geoelectrical resistivity method was used in the study. Sixteen geoelectric soundings known as Vertical electrical Sounding data was acquired in the study area using Schlumberger array configuration at maximum electrode spacing of 420 m. Four (4) geoelectric soundings were carried out in the area that near existing boreholes. Inverse resistivity model software was employed in processing the data. The result showed that the aquifer is shallow at depths that ranged from 30.6 m to 67.6 m, semi-deep at depths ranged from 70.8 m to 95.0 m and deep at depths that ranged from 96.0 m to 107.6 m. The thickness of the aquifers ranged from 14.0 m to 48.0 m. The hydraulic conductivities values ranged from 0.94 m/day to 12.83 m/day and transmissivity values ranged from 13.16 m2/day to 515.04 m2/day respectively. It is therefore hoped that this result would help the residents of the study area in terms of groundwater development planning and management.

Item Type:	Article
Uncontrolled Keywords:	Da-zarrouk parameters, Covenant University Ota and environs, aquifers
Subjects:	Q Science > Q Science (General) Q Science > QC Physics
Divisions:	Faculty of Engineering, Science and Mathematics > School of Civil Engineering and the Environment
Depositing User:	Mrs Hannah Akinwumi
Date Deposited:	27 Sep 2016 12:47
Last Modified:	27 Sep 2016 12:47
URI:	http://eprints.covenantuniversity.edu.ng/id/eprint/7262

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