AQUIFER VULNERABILITY STUDIES USING ELECTRICAL RESISTIVITY METHOD IN NSUKKA EAST AND WEST LOCAL GOVERNMENT AREA, ENUGU STATE, NIGERIA

Oluchi C Eni (), Ngozi M Ossai and Johnson C Ibuot
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Oluchi C Eni: Department of Physics and Astronomy, University of Nigeria, Nsukka
Ngozi M Ossai: Department of Physics and Astronomy, University of Nigeria, Nsukka
Johnson C Ibuot: Department of Physics and Astronomy, University of Nigeria, Nsukka

Geological Behavior (GBR), 2024, vol. 8, issue 1, 38-47

Abstract: This study utilized electrical resistivity survey methods using the Schlumberger configuration to investigate subsurface formations and assess groundwater vulnerability in the study area. The study employed vertical electrical sounding (VES) with Schlumberger electrode configuration in acquiring the data at ten locations across the study area. The result revealed five geoelectric layers with the fourth layer delineated as the aquifer layers. The values of resistivity and thickness were used in estimating the geohydraulic parameters (Dar-Zarrouk parameters, hydraulic conductivity, porosity, hydraulic resistance and formation factor) which help in evaluating the study area. The values of longitudinal conductance ranged from 0.002 to 0.046 mhos, transverse resistance ranged from 41836.86 to 6462359 Ωm2, porosity ranged from 7.298 to 19.538 %, formation factor ranged from 0.002 to 0.025, hydraulic conductivity ranged from 0.018 to 0.266 m2/day and hydraulic resistance ranged from 70.601 to 3895 237. The longitudinal conductance revealed the study area as poorly conducted while the aquifer vulnerability index show low to moderate vulnerability.

Date: 2024
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Persistent link: https://EconPapers.repec.org/RePEc:zib:zbngbr:v:8:y:2024:i:1:p:38-47

DOI: 10.26480/gbr.01.2024.38.47

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