alexa Determining the Occurrence of Freshwater in the Aquifers of the Deltaic Formation, Niger Delta Nigeria | OMICS International | Abstract
ISSN: 2161-0525

Journal of Environmental & Analytical Toxicology
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Research Article

Determining the Occurrence of Freshwater in the Aquifers of the Deltaic Formation, Niger Delta Nigeria

Akinwumiju AS1* and Orimoogunje OOI2

1Bunmak Systems Limited, Abuja, Nigeria

2Department of Geography, Obafemi Awolowo University, Ile-Ife, Nigeria

*Corresponding Author:
Akinwumiju Akinola Shola
Bunmak Systems Limited
Abuja, Nigeria
Tel: 2348034445487
E-mail: [email protected]

Received November 22, 2012; Accepted December 18, 2012; Published December 21, 2012

Citation: Akinwumiju AS, Orimoogunje OOI (2013) Determining the Occurrence of Freshwater in the Aquifers of the Deltaic Formation, Niger Delta Nigeria. J Environ Anal Toxicol 3:162. doi: 10.4172/2161-0525.1000162

Copyright: © 2013 Akinwumiju AS, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

The study attempted to determine the occurrence of freshwater in the aquifers of the Deltaic Formation, Niger Delta Nigeria using Lithologic Logs, Electrical Resistivity and Borehole Parameter (Depth) as input data. The Geographical Information System technique that permit diverse geospatial analyses, modelling and data manipulation and Simple Regression Method that permits the assessment of relationship between two variables were adopted in this study. While the Lithologic Logs were adopted to delineate aquifers and aquitards, the Electrical Resistivity was employed to determine the occurrence of freshwater in the aquifers of the study area. The modelled Geological Sequence revealed that the geology of the study area is very complex and consists mostly of unconsolidated sedimentary materials from top soil to the deep horizon. Hence, all the aquifers have very high storage capacity. It was revealed that the nature of resistivity does significantly increases with depth, which indicates lower level of salinity with increasing depth of hole. The study established positive relationship between depth of hole and aquifer resistivity in 80% of the sampled locations indicating the occurrence of freshwater in deep aquifers of the study area. The study identified three distinct aquifers (shallow, intermediate and deep) within the Deltaic Formation. The study also emphasized the occurrence of near surface overlying aquitards in the eastern part of the study area, indicating that shallow aquifers of the eastern part are less vulnerable to near surface contamination. Finally, the study concluded that, in most cases, groundwater quality increases as the depth of well increases within the study area. Finally, this study demonstrated the capabilities of Geographic Information System in spatially referenced visualization of hydrogeological characteristics of complex geology.

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