Open AccessGEOELECTRIC STUDY OF GROUNDWATER REPOSITORY IN PARTS OF AKWA IBOM STATE, SOUTHERN NIGERIA
Author(s) -
Johnson C. Ibuot,
Moses M. M. Ekpa,
Doris O. Okoroh,
Aniefiok S. Akpan Emmanuel T. Omeje
Publication year - 2020
Publication title -
water conservation and management
Language(s) - English
Resource type - Journals
eISSN - 2523-5672
pISSN - 2523-5664
DOI - 10.26480/wcm.02.2020.99.102
Subject(s) - aquifer , vertical electrical sounding , hydraulic conductivity , depth sounding , groundwater , electrical resistivity and conductivity , geology , ranging , soil science , hydrology (agriculture) , environmental science , geotechnical engineering , soil water , engineering , geodesy , oceanography , electrical engineering
Geoelectric survey employing Vertical Electrical Sounding (VES) was carried out in order to assess the groundwater repositories. A total of seven soundings were obtained with their layer resistivity, thickness and depth within the maximum electrode separation. The geoelectric parameters obtained were used to estimate the Dar-Zarrouk parameters (longitudinal conductance and transverse resistance), hydraulic conductivity and transmissivity. The result shows the aquifer resistivity ranging from 77.14 to 784.76 Ωm, with thickness ranging from 28.78 to 80.04 m. The longitudinal conductance have values ranging from 0.071 to 0.825 Ω-1 while the values of hydraulic conductivity and transmissivity range from 1.087 to 5.881 m/day and 60.180 to 374.031 2/day respectively. The contour maps generated show the variation of these parameters across the subsurface, and areas with poor protective capacity were delineated. The results also delineate the groundwater potential of the study area as moderate, while the corrosivity rating indicates non-corrosive and slightly corrosive.