Evaluation of Aquifer Hydraulic Parameters in Gashua Using Electrical Resistivity Method
Keywords:
Aquifer, spatial, transmissivity, hydraulic, groundwater,, porosityAbstract
Communication in Physical Sciences, 2020, 6(2):809-821
Authors:Agada Livinus Emeka* and Adetola Sunday Oniku
Received 21 November 2020/Accepted 20 December 2020
The aquifer hydraulic parameters of Gashua in Yobe State were evaluated (using electrical resistivity survey method) to describe the hydraulic characteristics of the groundwater in the area. Vertical electrical sounding (VES) with Schlumberger electrode configuration was deployed to obtain the geoelectric data. The results obtained reveal that the transmissivity and porosity of the aquifer were moderately high. The aquifer thickness in the study area ranged from 66.7 m to 120 m with an average value of 84.32 m. The aquifer resistivity in the study area ranged from 100.7 Ωm to 350 Ωm with an average value of 280 Ωm. The transmissivity of the aquifer ranged from 110.91 m2/day to 348.88 m2/day with an average value of 182.55 m2/day. The porosity of the aquifer ranged from 27.7% to 32.9% with an average value of 28.8%. Contour maps developed from the estimated values of the aquifer hydraulic parameters (hydraulic conductivity, porosity, resistivity, formation factor, and transmissivity) revealed that the study area has great potential for the production of groundwater. The magnitude and the spatial distribution of the aquifer parameters in the study area also confirmed that the aquifer has moderate groundwater production and sustainability.
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