Using Geo-electric Techniques for Vulnerability and Groundwater Potential Analysis of Aquifers in Nnewi, South Eastern Nigeria


 In Nnewi, Anambra State Nigeria, twenty vertical electrical sounding (VES) were performed to delineate vulnerability and transmissivity of identified aquifer within the study area. Hydraulic parameters (transverse resistance, longitudinal conductivity, hydraulic conductivity transmissivity) delineated from geoelectrical (depth, thickness, apparent resistance). The geo- aquifer: resistance 1000.590 1914.480, thickness 42.850 – 66.490 m 65.530 100.400 depth. estimated aquifers are transverse 54264.383 - 104568.898 Ωm, conductance 0.029 0.062 mho, 0.664 2.015 m/day transmis- sivity between 4.167 13.963 m2/day. All have poor protective capacity, 40 percent low classification with smaller withdrawal potential for local groundwater supply, while 60 has intermediate supply. Due its supply eastern part area stronger potential.