Abstract
The electrical resistivity method was employed to delineate leachate zones in Sabon Gari, Bauchi, Bauchi State, Nigeria. This involved the use of the 2D resistivity technique in specific locations within the study area. Two profile datasets were collected using the Wenner array with an Ohmega resistivity meter, covering a maximum distance of 100 meters. Subsequently, the 2D data obtained underwent interpretation through Res2Dinv and Surfer 11 software. The interpreted models revealed a leachate zone in profile 1, extending from a depth of 2 meters to 14 meters. In profile 2, the interpreted models displayed low resistivity in the topsoil due to the presence of water and ions in rock-bearing minerals, resulting in low resistivity from a depth of 1 meter to 12 meters. Notably, when this resistivity becomes exceptionally low (ranging from 0.47 Ωm to 7.10 Ωm), it indicates water contamination. In the event that drilling a borehole in the vicinity is deemed necessary, it is advisable to seal the near-surface water to prevent its infiltration into the borehole.
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