Mudassir Hassan1 and Tasi’u Rilwanu Yalwa2
1Department of Geography, Umaru Musa Yar’adua University, P. M. B 2218, Katsina, Nigeria.
2Department of Geography, Bayero University Kano, P. M. B. 3011, Kano, Nigeria
*Corresponding author’s Email: mudassir.hassan@umyu.edu.ng, doi.org/10.55639/607.02010016
ABSTRACT
Electrical resistivity data acquired in twenty one (21) locations using vertical electrical sounding method of Schlumberger array have been used to evaluate the aquifer hydraulic properties of a coarse granite formation in parts of Mani area, Nigeria. The aim of the study was to estimates hydraulic parameters for community water supply. The data acquired were processed, analyzed and interpreted using the curve matching method with the IPI2Win software to generate sounding curves and different geo-electric layers, their resistivities, thicknesses, and depths. The aquifer units were found in the weathered and fractured layers. The result showed that 42.9% of VES locations were dominated by H (ρ1 > ρ2 < ρ3) type, indicating potential water sites. The aquifer resistivity varied from 34.08 to 331 Ώm, aquifer thickness ranged from 4.37 m to 19.5 m, depth to the aquifer ranging from 30.2 – 54.8 m. The transverse resistance (R) of the study area varied from 274.07 to 5343 Ωm2. Hydraulic conductivity ranged from 1.724 – 14.371 m/day with an average value of 4.768 m/day. The transmissivity (Tr) showed a high value of 119.854 m2/day and a low value of 9.972 m2/day. Effective porosity (Ф) varied from 27.951 to 37.493 %, aquifer permeability (kp) revealed semi-permeable formation, aquifer storativity indicates a confined aquifer. The results of transmissivity magnitude of this study indicate that the aquifer can yield water only for small community. VES 2,4,7,10 and 17 were recommended for borehole drilling in the area.
Keywords:
Aquifer characteristics,
Hydraulic
parameters,
VES,
Transmissivity