Application of electrical and electromagnetic data to delineate shallow aquifer zones: a case study of Vea catchment, Ghana
Arabian Journal of Geosciences(2024)
Abstract
Access to groundwater for use in semi-arid regions is costly due to consistent failures in borehole drilling programs attributable to either a survey not carried out before drilling or incorrectly interpreted geophysical results. Thus, this study aims at delineating the geometry of the shallow weathered crystalline basement aquifer of the Vea catchment, northern Ghana, to aid in the assessment of its groundwater storage potential. Integrated electromagnetic and electrical resistivity surveys within the study area and borehole logs were integrated to delineate the aquifer zones of the study area. The study results revealed the interface between the bedrock and the overlying weathered subsurface as the most transmissive aquifer zone, with the saturated weathered subsurface making up 90
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Key words
Shallow aquifer,Electromagnetic method,Electrical resistivity tomography,Borehole log,Vea catchment,Ghana
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