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Groundwater is a dynamic renewable natural resource that plays a key role in drinking,
agricultural and industrial demands and it is an important water resource for domestic water
consumption in many regions of the world. In this study, we carried out hydro-geophysical
investigation for groundwater prospecting in part of Jos Township, North Central Nigeria to
delineate the aquifer units by a geoelectric method which involved using Horizontal Profiling
(HP) and Vertical Electrical Sounding (VES) techniques. A total of 371 HP stations were occupied
on 29 traverses with regular spacing of 25 m. Twenty-one of these 371 stations were selected for
VES. Horizontal profiling results were used to characterize the site into Low (ρ<700 Ω-m),
Medium (ρ=700-1400 Ω-m), and High (ρ>1400 Ω-m) resistivity zones. The low resistivity zones
are probable areas with highly weathered/fractured rocks. Six subsurface geologic layers were
obtained. These are topsoil, weathered layer material, partly weathered layer, fresh basement,
partly weathered/fractured basement material, and fresh basement. Limited pockets of weathered
and fractured rocks occur at deeper depths within the investigated area. While the weathered
layer materials (ρ=300-600 Ω-m), partly weathered layer (ρ=600-1,000 Ω-m), and the partly
weathered/fractured basement material (ρ=100-600 Ω-m) with thicknesses of 2–20, 5–22 and
6.5–56 metres, respectively, are the units with groundwater storage potentials that can support
medium to high yielding boreholes in the study area.