Litho-stratigraphic and hydrogeological evaluation of groundwater system in parts of Benin Metropolis, Benin City Nigeria: The key to groundwater sustainability

Previous studies revealed that soil properties play a significant role in aquifer contamination. Consequently, it is necessary to understand the nature and  properties of soil in carrying out groundwater evaluation. This study evaluates the subsurface geology and groundwater flow direction in Okpag...

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Main Authors: O.M. Omorogieva, O.I. Imasuen
Format: Article
Language:English
Published: Joint Coordination Centre of the World Bank assisted National Agricultural Research Programme (NARP) 2018-03-01
Series:Journal of Applied Sciences and Environmental Management
Subjects:
Online Access:https://www.ajol.info/index.php/jasem/article/view/167971
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author O.M. Omorogieva
O.I. Imasuen
author_facet O.M. Omorogieva
O.I. Imasuen
author_sort O.M. Omorogieva
collection DOAJ
description Previous studies revealed that soil properties play a significant role in aquifer contamination. Consequently, it is necessary to understand the nature and  properties of soil in carrying out groundwater evaluation. This study evaluates the subsurface geology and groundwater flow direction in Okpagha, Iguomo, Ikhueniro and Okhuahe suburbs in Benin City, Nigeria. Six boreholes were drilled by means of manual (rotary) method in different parts of the study area and each borehole was logged in order to  understand the lithology, depth to water table, static water level as well as flow direction. The results obtained show that aquifer within the study areas were confined, semi confined to unconfined and was dominated by sands with minor clay and lignite  interbed. It was observed that aquifer becomes shallower towards eastern portion of the study areas with increase in sand and decrease in clay  materials. It was also observed that groundwater flow map revealed a flow direction of North-West to South-East from North West to South East. The decrease in the depth of aquifer and increase in sand material could be explained by the  closeness to sea level. This phenomenon can enhance the infiltration of contaminants into aquifer thereby contaminating the groundwater bodies. It is therefore necessary to constantly monitor the groundwater quality in this suburbs in order to be aware of the quality of water resources being consumed because poor water quality can impact public health negatively. Furthermore, the authors advise that boreholes should be drilled in the direction of groundwater flow for maximum yield Keywords: Groundwater, lithology, borehole, aquifer, water quality and contaminants
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spelling doaj.art-99b98ce6eca14bba9217dd9ba31b19c62024-04-02T19:51:57ZengJoint Coordination Centre of the World Bank assisted National Agricultural Research Programme (NARP)Journal of Applied Sciences and Environmental Management2659-15022659-14992018-03-0122210.4314/jasem.v22i2.20Litho-stratigraphic and hydrogeological evaluation of groundwater system in parts of Benin Metropolis, Benin City Nigeria: The key to groundwater sustainabilityO.M. OmorogievaO.I. Imasuen Previous studies revealed that soil properties play a significant role in aquifer contamination. Consequently, it is necessary to understand the nature and  properties of soil in carrying out groundwater evaluation. This study evaluates the subsurface geology and groundwater flow direction in Okpagha, Iguomo, Ikhueniro and Okhuahe suburbs in Benin City, Nigeria. Six boreholes were drilled by means of manual (rotary) method in different parts of the study area and each borehole was logged in order to  understand the lithology, depth to water table, static water level as well as flow direction. The results obtained show that aquifer within the study areas were confined, semi confined to unconfined and was dominated by sands with minor clay and lignite  interbed. It was observed that aquifer becomes shallower towards eastern portion of the study areas with increase in sand and decrease in clay  materials. It was also observed that groundwater flow map revealed a flow direction of North-West to South-East from North West to South East. The decrease in the depth of aquifer and increase in sand material could be explained by the  closeness to sea level. This phenomenon can enhance the infiltration of contaminants into aquifer thereby contaminating the groundwater bodies. It is therefore necessary to constantly monitor the groundwater quality in this suburbs in order to be aware of the quality of water resources being consumed because poor water quality can impact public health negatively. Furthermore, the authors advise that boreholes should be drilled in the direction of groundwater flow for maximum yield Keywords: Groundwater, lithology, borehole, aquifer, water quality and contaminants https://www.ajol.info/index.php/jasem/article/view/167971Groundwaterlithologyboreholeaquiferwater quality and contaminants
spellingShingle O.M. Omorogieva
O.I. Imasuen
Litho-stratigraphic and hydrogeological evaluation of groundwater system in parts of Benin Metropolis, Benin City Nigeria: The key to groundwater sustainability
Journal of Applied Sciences and Environmental Management
Groundwater
lithology
borehole
aquifer
water quality and contaminants
title Litho-stratigraphic and hydrogeological evaluation of groundwater system in parts of Benin Metropolis, Benin City Nigeria: The key to groundwater sustainability
title_full Litho-stratigraphic and hydrogeological evaluation of groundwater system in parts of Benin Metropolis, Benin City Nigeria: The key to groundwater sustainability
title_fullStr Litho-stratigraphic and hydrogeological evaluation of groundwater system in parts of Benin Metropolis, Benin City Nigeria: The key to groundwater sustainability
title_full_unstemmed Litho-stratigraphic and hydrogeological evaluation of groundwater system in parts of Benin Metropolis, Benin City Nigeria: The key to groundwater sustainability
title_short Litho-stratigraphic and hydrogeological evaluation of groundwater system in parts of Benin Metropolis, Benin City Nigeria: The key to groundwater sustainability
title_sort litho stratigraphic and hydrogeological evaluation of groundwater system in parts of benin metropolis benin city nigeria the key to groundwater sustainability
topic Groundwater
lithology
borehole
aquifer
water quality and contaminants
url https://www.ajol.info/index.php/jasem/article/view/167971
work_keys_str_mv AT omomorogieva lithostratigraphicandhydrogeologicalevaluationofgroundwatersysteminpartsofbeninmetropolisbenincitynigeriathekeytogroundwatersustainability
AT oiimasuen lithostratigraphicandhydrogeologicalevaluationofgroundwatersysteminpartsofbeninmetropolisbenincitynigeriathekeytogroundwatersustainability