Estimation of aquifer hydraulic parameters using electrical resistivity method: A case study for Damaturu, Northeast Nigeria.

Abstract

In this study we estimated the aquifer hydraulic parameters of Damaturu, Yobe State, Nigeria, using electrical resistivity method. Schlumberger configuration was adopted for the study. Five geologic layers, which are the Topsoil, Clay, Sand, Sandy-clay, and Sand were delineated in the study area. The results of the measured aquifer parameters revealed that the aquifer resistivity values in the study area ranged from 126 to 518 Ωm and the aquifer has an average resistivity of 328 Ωm. The aquifer thickness ranged from 39 to 71m with an average value of 59 m. The aquifer has hydraulic conductivity values which ranged from 1.138 to 4.231 m/day with an average value of 1.915 m/day. The transmissivity of the aquifer ranged from 62.7 to194.64 m² /day with an average transmissivity of 111 m² /day. The porosity of the aquifer ranged from 30.13 to 31.44 % with an average value of 30.6 %. The porosity values showed that the study area has an appreciable porosity for effective groundwater flow and storage. The results of the measured aquifer parameters also revealed that the study area has good groundwater potential. Therefore, the results of this study will assist in providing exquisite information for groundwater exploration, abstraction, development and pollution control in the study area.