GEOELECTRICAL RESISTIVITY INVESTIGATION OF NORTHERN PART OF PAIKO AREA, NIGER STATE, NIGERIA

Abstract

Vertical electrical sounding was carried out in northern part of Paiko using Abem Terrameter model SAS 4000. The study was carried out with a view to determine the subsurface layer parameters (resistivities, depths and thickness) that were employed in delineating the groundwater potential of the area. A total of six traverses with ten VES stations along each traverse, having separation of 50 m apart were investigated. It has a maximum current electrode separation (AB/2) of 100 m. Three to four distinct geoelectric layers were observed namely; Top layer, weathered layer, fractured/fresh layer, and fresh basement layer. Eight VES stations were delineated as ground water potentials of the area, having third and fourth layer resistivi Depths range found were from 13.60 m to 36.60 m and thickness varies from 9.23 m to 30.51 m. Viable boreholes for good portable water should be sited at VES stations J8 and J10 having a fine aquifer at a depth of 36.60 m, and 17.80 m respectively with thickness of 9.23 m and 30.51 m respectively