Evaluating the groundwater potential of coastal aquifer using geoelectrical resistivity survey and porosity estimation: A case in Ota, SW Nigeria

Geoelectrical resistivity sounding surveys was carried out at two locations (A and B) in the new CanaanCity residential estate of Canaan land Ota, Ogun state order to locate possible targets for groundwater explorations. A total twelve (12) vertical electrical soundings were conducted using Schlumberger array configuration. The interpretations VES curves revealed five six geoelectrical layers location which comprises VES1-7. geoelectric units consist topsoil, sandy clay, lateritic confining bed (clayey sand), main aquifer (sand). top this part study area is between 40 m 83.5 m. Likewise, a seven delineated B portion site (VES 8–12) similar with an addition shale unit that interpreted be Akimbo Formation Dahomey Basin. depth productive within range 40–112.4 basal layer impermeable, serving as base seal rock confined system. estimated porosity values from 28% 74%, indicating highly porous system coastal plain sands mixed alluvium sand Benin complexity its undulating topography. • measurements used delineate aquifer. Complexity subsurface stratigraphy evaluated. Aquifer estimated. Spatial distribution mapped out.