Geoelectric Investigation of Subsurface Structure of Academic Area of the Old Campus of Bayero University Kano for Optimized Citing of Boreholes

Abstract

Apparent Resistivity and Self Potential data were acquired from the study area using vertical electrical sounding technique about square grid of 100m size within the academic area of Old Campus of Bayero University, Kano, Nigeria. The area is located between Latitude 11⁰59'00.7"N to 11⁰58'49.2" N and Longitude 8028'35.3"E to 8⁰29¢00.8"E . The collected data were analyzed using IP12WIN, Surfer version 7.0, and MS Excel. The study enabled us to generate graphical display of groundwater flow pattern and basement rock topography in the study area. Review of past groundwater exploration activities showed that the maximum drilling depth of boreholes within the investigation area was 42.0m. However, this study, based on the acquired data analyzed, recommended for drilling depth of about 60.0 to 80.0m and in addition identified locations of possible higher/sustainable yield. Thus, this study will consequently help in optimized citing of boreholes and curtail unwarranted spending from indiscriminate and shallow sinking of boreholes. The study identified the areas between Biology Department and Central Mosque, and around Sports Complex for groundwater exploitation activities.

Keywords: Apparent, Optimized, Resistivity, Sounding and Vadose.