A Comparative Study of Borehole Water Quality from Sedimentary Terrain and Basement Complex in South-Western, Nigeria

Fasunwon, O. O.; Ayeni, A.O.; Lawal, A. O.

doi:10.3923/rjes.2010.327.335

Cited by 7 publications

(6 citation statements)

References 3 publications

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“…The state of Lagos, Nigeria, lies between latitude 6° and 7° N and longitude 2° and 5° E [ 30 ] and is bounded on the north and east by Ogun State; in the west, it shares borders with the Benin Republic, and its south opens into the Atlantic Ocean ( Figure 1 ). Lagos is 356,861 hectares in size.…”

Section: Methodsmentioning

confidence: 99%

The Effect of Climate Change on Food Crop Production in Lagos State

Tajudeen

Omotayo

Ogundele

et al. 2022

Foods

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Climate change is set to be particularly disruptive in poor agricultural communities. This study examines the effects of, and farmer’s perceptions of, climate change on farming practices for cassava and maize in Lagos, Nigeria. Analysis of weather data from 1998 to 2018 (the most recent available) reveals little impact on cassava yield but a significant impact on maize yield. Furthermore, survey results indicate that farmers in this area are currently implementing techniques to adapt to changes in climate based on the type of crop grown. Agriculture in Lagos, Nigeria, is largely rain-fed and climate change negatively impacts crop productivity by decreasing crop yield and soil fertility, limiting the availability of soil water, increasing soil erosion, and contributing to the spread of pests. A decline in crop production due to climate change may be further exasperated by a lack of access to farming technology that reduces over-reliance on the rain-fed farming system and subsistence agriculture. This study indicates that there is a need for initiatives to motivate young and older farmers through access to credits, irrigation facilities, and innovative climate change adaptive strategies.

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Section: Methodsmentioning

confidence: 99%

The Effect of Climate Change on Food Crop Production in Lagos State

Tajudeen

Omotayo

Ogundele

et al. 2022

Foods

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“…These are high, moderately high and low regions. Shaki East and Shaki West were respectively found in high and moderately high regions while the remaining 23 LGAs are in low regions. Fig.…”

Section: Total Dissolved Solidsmentioning

confidence: 96%

“…According to [20], aquifers are of restricted vertical and lateral extent, but since the tropical climate affords the necessary conditions for deep and rapid chemical decay, thick, sandy clayey, lateritic overburdens serve as potential aquifers. Prediction of potential aquifers is possible using data on the thickness and lithology of the lateritic overburden on crystalline rocks [23].…”

Section: Hydrologeologymentioning

confidence: 99%

Mapping Groundwater Quality Parameters Using Geographic Information System (GIS) in Oyo State, Nigeria

Ogunbode

Ifabiyi

2017

JGEESI

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The knowledge of spatial pattern of groundwater quality is important to ensure a holistic approach to the management of the resource quality status in space and time. Thus a sample each of underground water was collected from each of the selected 5 rural communities in each of the selected 25 out of the 33 LGAs in Oyo State for the purpose of quality assessments. Eleven (11) parameters namely water temperature (°C), pH, electr ical conductivity (EC), Sodium (Na + ), SO 4 , Potassium (K + ), Nitrate (NO 3 ), Phosphate (PO 3 ), coli-form count, Oxidation Redox Potential (ORP) and Total Dissolved Solids (TDS) were subjected to standard laboratory analysis. The data was further subjected to analysis of variance and Duncan post-hoc test. ArcGIS version 10.1software was applied to generate maps to show the Duncan groupings of each of the quality parameters across the study area. Two (2) parameters namely pH and sulphate show homogenous distribution while the other nine (9) parameters are heterogeneous. Descriptive analysis showed that the groundwater in the study area is generally fit for human consumption. However, adequate attention needs to be given to temperature and potassium contents because they both slightly exceeded the Ogunbode and Ifabiyi; JGEESI, 11(1): 1-15, 2017; Article no.JGEESI.34634 2 standard required. The mapping affords spatial understanding of the distributional pattern of the parameters so that appropriate water quality management measure/s can be taken at a minimised cost to ensure appropriate levels of the parameter in the water to safeguard human health. Repeated investigation is required to determine the regularity or otherwise pattern of the water quality parameters. Original Research Article

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“…Amongst the various sources of water, groundwater is the most appropriate because, it often meets the criteria of the quality of water required for human consumption. It is the most widely used source of water in Nigeria and most of the African countries (Fasunwon et al, 2010). Groundwater is defined as that water that lies under ground and the world depends on its freshwater availability as the best quality source of water.…”

Section: Introductionmentioning

confidence: 99%

Integration of GIS-based Multi-criteria Analysis Techniques for the Delineation of Groundwater Potential Zones in Oyo state, Nigeria using Bayes’ Approach

Epuh

Famiwaye

Daramola

et al. 2022

Nig. J. Env. Sci. & Tech.

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Groundwater is the world’s most extracted raw material due to its incessant need for human consumption. This study was carried out to delineate groundwater potential zones in Oyo state, Nigeria using the integration of two GIS-based multi-criteria analysis techniques – Multi influencing factor (MIF) and Analytic hierarchy process (AHP). The Bayes’ integration approach for the recalculation of criteria weights was used. Eight groundwater potential contributing factors such as land cover, drainage density, lineament density, soil texture, geology, geomorphology, slope, and rainfall were processed and the multi-criteria analysis techniques were employed in assigning weights to each thematic layer and sub-classes. The thematic layers were overlaid in ArcGIS 10.4 software environment using the groundwater potential index equation for the generation of groundwater potential maps. The criteria weights of the MIF and AHP techniques were further integrated using Bayes’ approach to obtain an optimum groundwater potential map. In this study, the groundwater potential maps from the three techniques were validated using the Receiver Operating Characteristics (ROC) curve methods. The validation of the groundwater potential zonation maps from the MIF, AHP and the Bayes’ integration was also executed by evaluating the depths and yields from 1425 boreholes distributed across the study area. The Bayes’ approach shows that the groundwater percentage distributions within the study area are: very low (36%), low (34%), Moderate (14%) and high (16%). The maximum yields of 200m3 were observed in Akinyele, Atisbo and Egbeda LGA with minimum borehole depths of 24.20m, 30.30m and 30.00m. The Area under the Curve (AUC) results are: MIF (69.4%), Bayes’ (69.0%) and AHP (67.6%) respectively. The Bayes’ integration approach further shows better consistency as the average borehole yields across the groundwater potential zones positively correlates i.e. high potential zone has the highest average borehole yield, followed by the moderate, low and very low.

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A Comparative Study of Borehole Water Quality from Sedimentary Terrain and Basement Complex in South-Western, Nigeria

Cited by 7 publications

References 3 publications

The Effect of Climate Change on Food Crop Production in Lagos State

The Effect of Climate Change on Food Crop Production in Lagos State

Mapping Groundwater Quality Parameters Using Geographic Information System (GIS) in Oyo State, Nigeria

Integration of GIS-based Multi-criteria Analysis Techniques for the Delineation of Groundwater Potential Zones in Oyo state, Nigeria using Bayes’ Approach

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