The groundwater potential evaluation at industrial estate Ogbomoso, Southwestern Nigeria
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Abstract
Description
Vertical Electrical Sounding method was used to map Oyo
State industrial estate Ogbomoso with a view to determining the
groundwater potential of the study area. Ten Vertical Electrical
Soundings (VES) were carried out across the area using the
schlumberger electrode array configuration with current electrode
separation (AB) varying from 130 m to 200 m. Nine out
of the ten modeled curves were H-type where the remaining one
was KH-type. The geoelectric sections obtained from the sounding
curves revealed 3-layer and 4-layer earth models respectively.
The models showed the subsurface layers categorized
into the topsoil, weathered/clay, fractured layers and the fresh
bedrock. The weathered basement and fractured basement are
the aquifer types delineated for the area. Groundwater potential
evaluated from the maps (i.e. overburden thickness, anisotropic
coefficient, weathered layer isothickness, weathered layer isoresistivity,
transverse resistance and bedrock relief maps) revealed
that the Southern and Eastern parts of the study area are the most
promising region for borehole development. However, Northeastern
region of the study area can also be considered as fair for
borehole development.
Keywords
Q Science (General), QC Physics