Evaluation of groundwater potential and aquifer protective capacity assessment at Tutugbua-Olugboyega area, off Ondo road, Akure Southwestern Nigeria

Ayuk, M.A.; Adelusi, A. O.; Adiat, K.A.N.

doi:10.5897/ijps09.299

Cited by 11 publications

(4 citation statements)

References 15 publications

(13 reference statements)

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“…It is defined as the total depth from the surface to the top of bedrock at each of the VES station. It can be seen from the result that the depth -tobedrock varies from 5 to 25 m. The result is in agreement with [7] which predicted a range of 4.0 to 80 m as possible overburden thickness in a similar geological terrain of the basement complex area of Akure, Southwestern, Nigeria. It can be seen from the map that the bedrock is not a continuous and smooth, rather, it shows undulating configuration.…”

Section: The Weathered Layer Thicknesssupporting

confidence: 88%

Geoelectric Assessment of Groundwater Potential in Supare Akoko, Southwestern, Nigeria

Ajayi¹,

Awotuyi²,

Bello³

2019

EESRJ

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Data from Geo-electrical survey using VES (vertical electrical sounding) measurements has been carried out in order to demarcate groundwater zones in Supare Akoko, Southwestern, Nigeria. Presently, the major source of drinking water supply in this area is via shallow hand dug wells and few borehole constructions provided by the government. In order to improve the standard of living of the community and ease the problem of water scarcity in the area, this study was initiated to delineate the groundwater potentials. Twenty (VES) was carried out with ABEM SAS-1000 Terrameter using the Schlumberger electrode array and the result shows three geoelectric layers within the study area. These subsurface layers include weathered layer, the topsoil, partially weathered/ fractured basement and fresh basement. Weathered zones, Valley fills/basement depressions, and fractured zones were the feasible groundwater pockets that were delineated in the study area. A series of bedrock ridges and depressions were delineated within the surveyed area. The isopach map revealed relatively high overburden thicknesses (25 m) within the depressions. The bedrock depressions were observed to be variably fractured. The main aquifer unit constitutes a relatively low resistivity weathered basement. Generally, the groundwater potential was zoned into low, medium and high. The VES station mapped as medium and high groundwater potential zones are viable for groundwater development within the study area. This study has proved to be quite successful for mapping fractures, outrocks types and structural formation which cannot be observed at the surface.

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Section: The Weathered Layer Thicknesssupporting

confidence: 88%

Geoelectric Assessment of Groundwater Potential in Supare Akoko, Southwestern, Nigeria

Ajayi¹,

Awotuyi²,

Bello³

2019

EESRJ

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“…It is necessary to integrate the EM method with other geophysical methods particularly ER method, to increase the success rate of exploration [8]. ER method has been adjudged efficient and has been effectively applied to environmental and hydrogeological related problems [9]. Braga et al [10] 2006 applied ER method to solve aquifer vulnerability.…”

Section: Introductionmentioning

confidence: 99%

Groundwater Exploration in a Heterogeneous Basement Complex Environment Using Integrated Geophysical Methods

Ayantola¹,

Amigun²

2023

EESRJ

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The integrated very low frequency of electromagnetic (VLF-EM) and vertical electrical sounding technique (VES) of electrical method were carried out to explore for groundwater resource in a very complex terrain within Akure metropolis. The VLF data was acquired at 10m interval along five traverses (TR 1 to 5). The conductive zones mapped on EM profiles and 2-D pseudo-section suspected to be fracture or localized features were further probed using a VES technique. A total number of 12 VES points were acquired to ascertain the fractured or contact zones. Relatively high conductivity is observed around the portion marked as F1, F2 and F3. VES conducted on these conductive zones acknowledged the suspected fractured or geologic contacts zone observed on the EM profiles. VES 1, 7 and 11 acquired on the conductive zones delineates both weathered and fractured layers with the resistivity values ranging from 80 to 490Ωm and 228 to 935Ωm respectively. These layers are considered to favour groundwater accumulation. VES acquired on the high resistive zones of EM profiles also showed high resistivity which may be not be prolific for groundwater development. The outcomes of this research may serve as a guide for sustainable water supply and water management plan.

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“…This gives room for composite interpretation; therefore, the best geophysical method should be selected for its best application (Akinlalu et al, 2017). Many geophysical approaches can be employed in groundwater studies, including the magnetic method, electrical resistivity, and electromagnetic method (Ikhifa et al, 2008;Ofomola et al, 2009;Adiat et al, 2009;Alile et al, 2011;Amigun et al, 2012;Ayuk et al, 2013;Okolie et al, 2013and Akinlalu et al, 2017.…”

Section: Introductionmentioning

confidence: 99%

The Assessment of Groundwater Availability in Sedimentary Environments Using the Electrical Resistivity Method: A Case of Ekpoma and Its Environs, Southern Nigeria

Idiahi,

Adiat,

Ozegin

et al. 2023

Idn. J. Earth Sci.

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Groundwater resources are an ephemeral aspect of the ecosystem, especially in the university town of Ekpoma, where the issue of severe water shortages brought on by failed or unproductive boreholes has lingered over time. This study makes an effort to thoroughly define the groundwater-bearing zones and estimate their thicknesses and depths in order to identify the cause(s) of groundwater scarcity in Ekpoma and its peri-urban area. In order to accomplish the objectives of the work, fifteen (15) Vertical Electrical Soundings (VES) were conducted across the study location, leveraging Schlumberger electrode array, with current electrode spacing varying from 5.00 to 550.00 m. The results show there were five distinct geoelectrical strata identified: top soil, clayey sandstone, sand, consolidated sandstone, and unconsolidated sandstone. The unconsolidated sandstone layer constituted the aquifer units in the area, whose depth ranges between 103.00 m and 258.00 m. Besides, this study showed that there is strong indication/evidence of saturation of the aquifer identified in the Imo Shale Formation surrounding Irrua with highly porous and permeable materials atop it, justifying the region's highly productive wells and boreholes. The aquifers delineated in and around the Ekpoma community, on the other hand, have relatively high resistive values (3404.20–5303.00 ?m), indicating less saturation, and are equally overlain by less porous and permeable materials, establishing why Ekpoma (located within the Bende-Ameki and Ogwashi Asaba Formations) has a perennial groundwater shortage. The shallow aquifer units in the area of study were discovered to be rather thin, with the majority having a thickness of less than 30 m, making them less sustainable for long-term groundwater abstraction and resulting in failed boreholes in most portions of Ekpoma town. The study indicates that the groundwater prospects of Ekpoma and its environs are poor, and deep boreholes reaching a minimum depth of 250.00 m should be drilled since it is sustainable due to its significant thickness to serve the Ekpoma community and its environs. The present investigation findings can aid in improving knowledge of underlying geological conditions, evaluating the feasibility of the researched area for predicted urban and economic development, and sustaining water supply for connected activities.

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Evaluation of groundwater potential and aquifer protective capacity assessment at Tutugbua-Olugboyega area, off Ondo road, Akure Southwestern Nigeria

Cited by 11 publications

References 15 publications

Geoelectric Assessment of Groundwater Potential in Supare Akoko, Southwestern, Nigeria

Geoelectric Assessment of Groundwater Potential in Supare Akoko, Southwestern, Nigeria

Groundwater Exploration in a Heterogeneous Basement Complex Environment Using Integrated Geophysical Methods

The Assessment of Groundwater Availability in Sedimentary Environments Using the Electrical Resistivity Method: A Case of Ekpoma and Its Environs, Southern Nigeria

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