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Home  >  Transactions of NAMP VOL.12

23. GEOPHYSICAL INVESTIGATION AND AQUIFER CHARACTERIZATION OF SOME SITED BOREHOLES IN SOME LOCAL GOVERNMENT AREAS IN KANO STATE, NIGERIA by S. Auwalu, S.M. Farouq and M. Saleh Volume 12, (July – Sept., 2020 Issue)
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GEOPHYSICAL INVESTIGATION AND AQUIFER CHARACTERIZATION OF SOME SITED BOREHOLES IN SOME LOCAL GOVERNMENT AREAS IN KANO STATE, NIGERIA
1S. Auwalu, 2S.M. Farouq and 3M. Saleh
1Ministry of Education Science and Technology, Dutse, Jigawa State, Nigeria.
2Remedialand General Studies Dept. AuduBako College of Agriculture, Danbatta, P.M.B, 3159 Kano State.
3Physics Dept. Bayero University, Kano, P.M.B, 3011 Kano State.
Abstract
Geophysical investigation were carried out on the study areas and pump out test were carried out on the sunk boreholes to determine the location, depth of potential aquifer, type of aquifers in the study areas and the yield of the aquifer. The geophysical investigation of the study area revealed the presence of four to five layers; topsoil, the second layer varies at different locations from clay to Laterite, third layer weathered rock, forth layer fracture rock, and fifth layer fresh basement rock. The study identifies the forth layer with resistivity value range of 43.00Ωm to 622.00Ωm and thickness of 16.30m to 49.10m to be a potential aquifer. The boreholes sunk were pump test and the yield, Transmissivity and hydraulic conductivity were calculated. The values range for yield or discharge, Transmissivity and hydraulic conductivity are 43.20m3/day to 95.00m3/day, 17.19m2/day to 1502.10m2/day and 1.43m/day to 64.19m/day respectively. The study revealed that the area has two types of aquifers; confined and semi - confined aquifer. Boreholes with Transmissivity value greater than 500m2/day have high potential aquifer (Tasawar Dukawa, Gidan Darho and Sabaran Danmaidaki), those with value greater the 50m2/day are of moderate potential (Gidan Jabir, Kabba and Galadimawa) and those with value less than 50m2/day are of low potential (Danya). Wells with values indicating moderate to high potential aquifers can support hand pump and motorized pump while that with value indicating low potential can only support hand pump.
Keywords: Groundwater, Geophysical Survey, potential aquifer, Transmissivity, yield, hydraulic conductivity.
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