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Vertical Electrical Sounding (VES) using Schlumberger electrode configuration was employed in the determination of underground resistivity as well as to determine the thickness, depth and aquiferous zone in parts of Wilberforce Island Bayelsa State. A total of five Vertical Electrical Sounding (VES) were obtained using the Schlumberger electrode array configuration with maximum current electrode spacing of 400-500m. The data obtained was interpreted using computer assisted interpretation software (IPI2win) which showed that the area is composed of topsoil, clay, sand, clayey sand, sandy clay, medium coarse sand and fine coarse sand.Various geosounding curves were obtained at the various stations. The resistivity plot shows that stations in VES1, VES2, VES3, VES4 and VES5 have QQH, KH, QHA, KH and AA type of curves. Four geoelectric layers were identified in all VES station except that of VES1 and VES3 where five geoelectric layers were actually identified. The highest resistivity obtained in all the stations was 327.2Ωm in layer one in VES 3 (at Igbedi) with a thickness of 1.9m and a depth of 1.9m, and the lowest reistivity obtained was 8.1Ωm in layer three in VES 4 (NDU New site) with a thickness of 21.1m and a depth of 24.9m. The first and second aquifer layers were identified in layer four in VES5 (tantuama-NDU) and layer five in VES3(Igbedi) with resistivity value of 134.6Ωm and 120.0Ωm and depth of 100.7m and 84.8m. Analysis of this layers shows that they compose of fine coarse sand and viable water formation. Hence, Vertical Electrical Sounding can be said to be a good alternative for the determination of underground resistivity.

Vertical Electrical Sounding (Ves) For The Determination Of Under Ground Resistivity In Part Of Nigeria Wilberforce Island,Amassoma, Bayelsa State