Sustainability and Conceptual Groundwater Hydraulic Models of Basement Aquifers
Groundwater flow of the basement terrains of the Ibarapa region was studied by carrying out pumping test and measurement of borehole inventory. The view was to identify the associated aquifer systems from the time-drawdown curves, quantify the estimable hydraulic properties and develop hypothetical...
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doaj-063c62567ab4460dbddc2fde101d5c0f2021-09-05T14:01:28ZengSciendoMaterials and Geoenvironment1854-74002019-06-01662879810.2478/rmzmag-2019-0016rmzmag-2019-0016Sustainability and Conceptual Groundwater Hydraulic Models of Basement AquifersAkanbi Olanrewaju Akinfemiwa0Tijani Moshood ‘Niyi1Department of Earth Sciences, Ajayi Crowther University Oyo, Oyo Town, NigeriaDepartment of Geology, University of Ibadan, Ibadan, NigeriaGroundwater flow of the basement terrains of the Ibarapa region was studied by carrying out pumping test and measurement of borehole inventory. The view was to identify the associated aquifer systems from the time-drawdown curves, quantify the estimable hydraulic properties and develop hypothetical models for the understanding of the groundwater flow in the area underlain by diverse crystalline bedrocks. Three aquifer types were identified namely, dual, leaky and regolith. The yield of groundwater in dual and leaky aquifers that dominated terrains underlain by amphibolite and gneisses was sustainable, but the discharge of regolith aquifers mainly associated with migmatite and granite terrains declined at late pumping stage. The transmissivities of the dual and leaky aquifers were between 2.02 and 11.65 m2/day, while those of regolith aquifers were mostly less than 1.00 m2/day. The average aquifer transmissivities in m2/day by bedrocks were: 6.85, 2.57, 0.76 and 1.72, correspondingly. The inter-relationships between transmissivities and groundwater discharge showed diverse aquifer representations, from sustainable high-yielding to unsustainable low-yielding types. Conscientious effort is, therefore, required for well construction in the area.https://doi.org/10.2478/rmzmag-2019-0016groundwaterwell-inventorytime-drawdownaquifer-typesyield |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Akanbi Olanrewaju Akinfemiwa Tijani Moshood ‘Niyi |
spellingShingle |
Akanbi Olanrewaju Akinfemiwa Tijani Moshood ‘Niyi Sustainability and Conceptual Groundwater Hydraulic Models of Basement Aquifers Materials and Geoenvironment groundwater well-inventory time-drawdown aquifer-types yield |
author_facet |
Akanbi Olanrewaju Akinfemiwa Tijani Moshood ‘Niyi |
author_sort |
Akanbi Olanrewaju Akinfemiwa |
title |
Sustainability and Conceptual Groundwater Hydraulic Models of Basement Aquifers |
title_short |
Sustainability and Conceptual Groundwater Hydraulic Models of Basement Aquifers |
title_full |
Sustainability and Conceptual Groundwater Hydraulic Models of Basement Aquifers |
title_fullStr |
Sustainability and Conceptual Groundwater Hydraulic Models of Basement Aquifers |
title_full_unstemmed |
Sustainability and Conceptual Groundwater Hydraulic Models of Basement Aquifers |
title_sort |
sustainability and conceptual groundwater hydraulic models of basement aquifers |
publisher |
Sciendo |
series |
Materials and Geoenvironment |
issn |
1854-7400 |
publishDate |
2019-06-01 |
description |
Groundwater flow of the basement terrains of the Ibarapa region was studied by carrying out pumping test and measurement of borehole inventory. The view was to identify the associated aquifer systems from the time-drawdown curves, quantify the estimable hydraulic properties and develop hypothetical models for the understanding of the groundwater flow in the area underlain by diverse crystalline bedrocks. Three aquifer types were identified namely, dual, leaky and regolith. The yield of groundwater in dual and leaky aquifers that dominated terrains underlain by amphibolite and gneisses was sustainable, but the discharge of regolith aquifers mainly associated with migmatite and granite terrains declined at late pumping stage. The transmissivities of the dual and leaky aquifers were between 2.02 and 11.65 m2/day, while those of regolith aquifers were mostly less than 1.00 m2/day. The average aquifer transmissivities in m2/day by bedrocks were: 6.85, 2.57, 0.76 and 1.72, correspondingly. The inter-relationships between transmissivities and groundwater discharge showed diverse aquifer representations, from sustainable high-yielding to unsustainable low-yielding types. Conscientious effort is, therefore, required for well construction in the area. |
topic |
groundwater well-inventory time-drawdown aquifer-types yield |
url |
https://doi.org/10.2478/rmzmag-2019-0016 |
work_keys_str_mv |
AT akanbiolanrewajuakinfemiwa sustainabilityandconceptualgroundwaterhydraulicmodelsofbasementaquifers AT tijanimoshoodniyi sustainabilityandconceptualgroundwaterhydraulicmodelsofbasementaquifers |
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