This study investigated depth sounding using Square and Schlumberger electrodes configuration. The study was conducted at the University of Calabar, Calabar. The instrument employed in the study was ABEM Terrameter SAS 1000 with other accessories. For the square array the largest A-size of the square was 192.0m and for the Schlumberger array, the largest length of spread was 200m. The data were interpreted with the aid of IPI2WIN software. From the interpretation of results, six (6) geoelectric layers with KHKQ curve were obtained for square array and seven (7) layers with HKQQH curve for Schlumberger. Square array had a penetration depth of 43.3m which is greater than the Schlumberger array technique of 19.1m. This implies that for depth sounding, square array penetrates deeper than Schlumberger array.
