Geophysical investigation for ground water in Orifite, Anambra State, Nigeria.

Abstract

Ten (10) vertical electrical soundings (fairly distributed over Orifite and its environs) were conducted using the Schlcumberger array with six points per decade and current electrode spacing of 1-681m. The results of the Interpretation identified a perched aquifer belonging to Ogwashi-Asaba Formation and much closer to the ground surface (32-57m depth with apparent resistivities, 170-5595Ω-m, and thicknesses, 71-146m) as the source of ground water to the borehole. Also, the result showed a second aquifer (the Nanka sand) at depth, 151-239m, and of resistivities, 574-6750 Ω-m.

JONAMP Vol. 11 2007: pp. 379-386