Investigation of Groundwater Resources by Determining the Aquifer Parameters around Futa Staff Quarters [ READ ]
C.T. Ibironke, J.R. Adewumi, O.M. Ojo and O.K. Akinmusere
An electrical resistivity survey was conducted at the Federal University of Technology, Akure (FUTA) staff quarters with a view to determine the subsurface layer parameters (velocities, resistivity, and thicknesses) and use same to categorize the ground-water potential and aquifer characteristics of the study area. Fifteen Vertical Electrical Soundings (VES) of the Schlumberger configuration were performed with electrode separation (AB/2) varying from 1 m to 65 m. An Ohmega (O) resistivity meter was used in the survey. The geo-electric data obtained were interpreted with partial curve matching and computer iteration using RESIST software. The results shows the presence of five geo-electric layers comprising top soil, weathered layered, partially weathered, fractured basement and fresh basement. The topsoil had resistivity ranging from 104 ?m- 309 ?m with a depth of 0.7 m-2.6 m. The weathered layer had resistivity ranging from 53 ?m- 256 ?m with a depth of 2.8 m- 19.4 m. The partially weathered had resistivity ranging from 108 ?m- 645 ?m with a depth of 6.1m-18.7m. The fractured basement had resistivity ranging from 104 ?m- 105 ?m with a depth of 4.7m – 14m while the fresh basement had resistivity ranging from 860 ?m- 1638 ?m with a depth of 6m – 16m. The comparison of the various parameters indicates that VES 5 is the preferable point to dig a well in this study area. It is therefore recommended that a good water scheme should be established to serve the residents of the study area.
C.T. Ibironke, J.R. Adewumi, O.M. Ojo and O.K. Akinmusere
An electrical resistivity survey was conducted at the Federal University of Technology, Akure (FUTA) staff quarters with a view to determine the subsurface layer parameters (velocities, resistivity, and thicknesses) and use same to categorize the ground-water potential and aquifer characteristics of the study area. Fifteen Vertical Electrical Soundings (VES) of the Schlumberger configuration were performed with electrode separation (AB/2) varying from 1 m to 65 m. An Ohmega (O) resistivity meter was used in the survey. The geo-electric data obtained were interpreted with partial curve matching and computer iteration using RESIST software. The results shows the presence of five geo-electric layers comprising top soil, weathered layered, partially weathered, fractured basement and fresh basement. The topsoil had resistivity ranging from 104 ?m- 309 ?m with a depth of 0.7 m-2.6 m. The weathered layer had resistivity ranging from 53 ?m- 256 ?m with a depth of 2.8 m- 19.4 m. The partially weathered had resistivity ranging from 108 ?m- 645 ?m with a depth of 6.1m-18.7m. The fractured basement had resistivity ranging from 104 ?m- 105 ?m with a depth of 4.7m – 14m while the fresh basement had resistivity ranging from 860 ?m- 1638 ?m with a depth of 6m – 16m. The comparison of the various parameters indicates that VES 5 is the preferable point to dig a well in this study area. It is therefore recommended that a good water scheme should be established to serve the residents of the study area.
