GEO-ELECTRICAL SURVEY FOR DELINEATING GROUNDWATER POTENTIAL ZONES AROUND INDUSTRIAL AREAS, BAUCHI, NORTHEASTERN NIGERIA
DOI:
https://doi.org/10/3303/jees.2026.0301/024Keywords:
Vertical Electrical Sounding, Resistivity, Dar Zarrouk parameters, Overburden thickness, Groundwater PotentialAbstract
This present study uses Dar Zarrouk (D-Z) Parameters: Total Transverse Unit Resistance, T (Ωm2), and Total Longitudinal Unit Conductance, S (Ω−1) to suggest optimal locations for drilling of boreholes in Gudum environ, Bauchi State, Nigeria. The methodology adopted used and interpreted 20 Schlumberger Vertical Electrical Sounding (VES) curves with maximum current electrode spacing of AB/2 = 100 m. Aquifer parameter estimates from the (VES) curves were used to prepare contour maps of T (Ωm2), S (Ω−1), and aquifer thickness h (m). To effectively use these parameters, iso-thickness and iso-resistivity maps were compared with contour maps of transverse resistance. The agreement among these parameters provided the basis for identifying auriferous zones. It was observed that the Southern part of the study area, which is mainly underlain by the biotite hornblende granite, showed relatively higher T (Ωm2), h (m), and ρ (Ωm) values, implying high-yield auriferous zones. The overburden thicknesses at all VES stations range from 12.76 m to 44.57 m, with resistivity values from 104.0 Ωm to 371.1 Ωm. Also, the overburden thickness thematic maps confirm that the southern part of the study area has lower resistivity values, indicating that water wells sited in these areas yield more water.
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