Combined Geoelectrical and Drill Hole Methods for Solving Hydro Geological Problems in the Ninth Mile Corner Area, Near Enugu, Southeastern Nigeria

The Ninth Mile Corner is a centre of industrial activity because of the abundant groundwater resources. Knowledge of geophysical and hydro geological details is vital for designing adequate ground water management programme. Essentially, the area is underlain by the Ajalli sandstone. Schlumberger electrode array was employed in the electrode spacing. Electrode spread AB was more than 1000m. Depth probe results were interpreted by partial-curve matching and computer modeling techniques using two layer master curves. The geoelectrical sounding results were compared with the Drill Hole data and encouraging correlations were obtained to the depth of the water table.