You have no items in your shopping cart.
ABSTRACT
The study employed VES to investigate the geoelectric characteristics of an area and determine suitable groundwater development zones. The Petrozenith Terrameter was used to measure resistivity values based on Ohm’s law. A total of five(5) VES points were surveyed using the Schlumberger electrode array configuration, with a maximum current electrode separation (AB) of 400m (AB/2 = 200m) and a fixed potential electrode separation (MN). Data processing and curve fitting were performed using WINRESIST software. The study revealed six geoelectric layers in most VES points, except for VES 4, which exhibited five layers. The geoelectric curves were classified into AHA, AHK, HAK, and AAK types. The first two layers comprised unconsolidated sand and lateritic soil, with resistivities ranging from 109.97 to 970.20 Ωm and thicknesses between 0.24m and 4.32m. The third and fourth layers, consisting of lateritic clay, fine sand, sandstone, and medium to coarse sand, exhibited resistivity values from 137.50 to 57096 Ωm and thicknesses between 1.95m and 23.48m. The fifth layer, identified as a potential aquifer, was composed of medium to coarse sand with resistivity values between 646.84 and 4199.9 Ωm, reaching depths of 56.17m to over 107m. The high resistivity values of the aquifer units suggest a porous and permeable groundwater-bearing formation. Medium to coarse sand was the predominant aquifer material in four VES locations, while one VES point revealed a coarse sand aquifer. The recommended drill depths for groundwater extraction ranged from 15.28m to 107m, with an average depth of 53.77m.
