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Assessment of static water level and overburden pattern for sustainable groundwater development and management in Ilorin City, Nigeria

Basement aquifers are usually developed within the weathered, over-burdened and fractured bedrock of crystalline rocks which can provide a sizeable amount of groundwater if the overburden is relatively thick enough to store percolating water. This study assessed the static water level and overburd...

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Main Authors: Damilola, Ashaolu Eniola, Olumide, Omotosho
Format: Article
Language:English
Published: Faculty of Social Sciences and Humanities, UKM,Bangi 2015
Online Access:http://journalarticle.ukm.my/9139/1/1x.fullgeo-sept15-ashaolu.pdf
http://journalarticle.ukm.my/9139/
http://www.ukm.my/geografia/v2/index.php?cont=a&item=2&thn=2015&vol=11&issue=9&ver=loc
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spelling my-ukm.journal.91392016-12-14T06:49:05Z http://journalarticle.ukm.my/9139/ Assessment of static water level and overburden pattern for sustainable groundwater development and management in Ilorin City, Nigeria Damilola, Ashaolu Eniola Olumide, Omotosho Basement aquifers are usually developed within the weathered, over-burdened and fractured bedrock of crystalline rocks which can provide a sizeable amount of groundwater if the overburden is relatively thick enough to store percolating water. This study assessed the static water level and overburden pattern for sustainable groundwater development and management in Ilorin city, Nigeria. The data on depth of boreholes, depth to water, water level of 100 boreholes and the Vertical Electrical Soundings (VES) data conducted before the borehole were drilled, were collected from Kwara State Ministry of Water Resources and Lower Niger River Basin Development Authority, Ilorin. All the Vertical Electrical Soundings (VES) data collected were conducted with ABEM SAS-1000 Terrameter using the Schlumberger electrode configuration, and the electrode spacing (AB/2) varied from 10m to 200m. From the manual interpretation of each VES curve, we estimated the overburden thicknesses. Field work was embarked on to get the coordinates (locations) of the sampled points using handheld GPS. Pearson Moment Correlation Coefficient was applied to determine the level of association between borehole parameters and thickness of overburden. The static water level and contour map were computed with the data on depth to water and the coordinates to show the pattern of water level in Ilorin, using ArcGIS 10.2 and Surfer 12 GIS software. The depth of overburden and the point location collected were also used to plot the overburden map using IDW interpolation. This study classified Ilorin into poor (overburden <10m), marginal (10m-19m overburden) and good or high zone (overburden ≥ 20m) of groundwater potentials. The spatial pattern of overburden depth revealed that the majority of Ilorin city was underlain by marginally thick overburden. The study concluded that sustainable groundwater development and management in Ilorin city could only be attained by controlling the indiscriminate drilling of boreholes (wells), continuous mapping and regular updating of the available records on groundwater resources. Faculty of Social Sciences and Humanities, UKM,Bangi 2015 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/9139/1/1x.fullgeo-sept15-ashaolu.pdf Damilola, Ashaolu Eniola and Olumide, Omotosho (2015) Assessment of static water level and overburden pattern for sustainable groundwater development and management in Ilorin City, Nigeria. Geografia : Malaysian Journal of Society and Space, 11 (9). pp. 1-11. ISSN 2180-2491 http://www.ukm.my/geografia/v2/index.php?cont=a&item=2&thn=2015&vol=11&issue=9&ver=loc
institution Universiti Kebangsaan Malaysia
building Perpustakaan Tun Sri Lanang Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Kebangsaan Malaysia
content_source UKM Journal Article Repository
url_provider http://journalarticle.ukm.my/
language English
description Basement aquifers are usually developed within the weathered, over-burdened and fractured bedrock of crystalline rocks which can provide a sizeable amount of groundwater if the overburden is relatively thick enough to store percolating water. This study assessed the static water level and overburden pattern for sustainable groundwater development and management in Ilorin city, Nigeria. The data on depth of boreholes, depth to water, water level of 100 boreholes and the Vertical Electrical Soundings (VES) data conducted before the borehole were drilled, were collected from Kwara State Ministry of Water Resources and Lower Niger River Basin Development Authority, Ilorin. All the Vertical Electrical Soundings (VES) data collected were conducted with ABEM SAS-1000 Terrameter using the Schlumberger electrode configuration, and the electrode spacing (AB/2) varied from 10m to 200m. From the manual interpretation of each VES curve, we estimated the overburden thicknesses. Field work was embarked on to get the coordinates (locations) of the sampled points using handheld GPS. Pearson Moment Correlation Coefficient was applied to determine the level of association between borehole parameters and thickness of overburden. The static water level and contour map were computed with the data on depth to water and the coordinates to show the pattern of water level in Ilorin, using ArcGIS 10.2 and Surfer 12 GIS software. The depth of overburden and the point location collected were also used to plot the overburden map using IDW interpolation. This study classified Ilorin into poor (overburden <10m), marginal (10m-19m overburden) and good or high zone (overburden ≥ 20m) of groundwater potentials. The spatial pattern of overburden depth revealed that the majority of Ilorin city was underlain by marginally thick overburden. The study concluded that sustainable groundwater development and management in Ilorin city could only be attained by controlling the indiscriminate drilling of boreholes (wells), continuous mapping and regular updating of the available records on groundwater resources.
format Article
author Damilola, Ashaolu Eniola
Olumide, Omotosho
spellingShingle Damilola, Ashaolu Eniola
Olumide, Omotosho
Assessment of static water level and overburden pattern for sustainable groundwater development and management in Ilorin City, Nigeria
author_facet Damilola, Ashaolu Eniola
Olumide, Omotosho
author_sort Damilola, Ashaolu Eniola
title Assessment of static water level and overburden pattern for sustainable groundwater development and management in Ilorin City, Nigeria
title_short Assessment of static water level and overburden pattern for sustainable groundwater development and management in Ilorin City, Nigeria
title_full Assessment of static water level and overburden pattern for sustainable groundwater development and management in Ilorin City, Nigeria
title_fullStr Assessment of static water level and overburden pattern for sustainable groundwater development and management in Ilorin City, Nigeria
title_full_unstemmed Assessment of static water level and overburden pattern for sustainable groundwater development and management in Ilorin City, Nigeria
title_sort assessment of static water level and overburden pattern for sustainable groundwater development and management in ilorin city, nigeria
publisher Faculty of Social Sciences and Humanities, UKM,Bangi
publishDate 2015
url http://journalarticle.ukm.my/9139/1/1x.fullgeo-sept15-ashaolu.pdf
http://journalarticle.ukm.my/9139/
http://www.ukm.my/geografia/v2/index.php?cont=a&item=2&thn=2015&vol=11&issue=9&ver=loc
_version_ 1643737692361457664
score 13.211869

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