Volume 2, Issue 4, July - December, 2025

Depiction of Aquifer Potential and Vulnerability Mapping: A Case Study of Delta North, Southern Part of Nigeria, Using Geophysical Approach

Eyankware MO^1♦, Osisanya OW², Akakuru OC³, Odesa GE¹, Okanigbuan PN¹, Ukor KP⁴, Esi E Oghenevovwero⁵, Chukwusa FO⁵

¹Department of Geology, Faculty of Science Dennis Osadabey University, Asaba, Delta Nigeria.
²Department of Physics, Federal University of Petroleum Resources, Effurun, Delta State, Nigeria
³Department of Geology, Faculty of Science, Federal University of Technology, Owerri Imo State Nigeria.
⁴Department of Geology, Geology, Faculty of Science University of Nigeria Nsukka, Nigeria
⁵Department of Physics, Faculty of Science, Dennis Osadebay University, Asaba, Delta State, Nigeria

^♦Corresponding Author
Eyankware MO, Department of Geology, Faculty of Science Dennis Osadabey University, Asaba, Delta Nigeria

ABSTRACT

In order to identify the aquifers, characterize their geometric properties, and determine their susceptibility to contamination by surface contaminants, a detailed hydrogeophysical investigation of the aquifers of the study area was conducted. The study area was subjected to fifteen (15) vertical electrical soundings (VES) with a Schlumberger array configuration with a maximum electrode separation of 200 m. Curve matching methods and iterative computer modeling were combined to process the VES data. Parameters estimated are aquifer thickness, longitudinal conductance (S), transverse unit resistance (Tr), average longitudinal resistance (ρL), aquifer conductivity (ῼ−1), hydraulic conductivity (K), and transmissivity (T), and their corresponding estimated values, which vary across the study area, range from 1.63 to 103.83 m, 0.02 to 0.05, 0 to 122169.9 ohms, 0 to 3406.4, 0.000037 to 0.001126, 0.0538 to1.13x1023m2/day, 0 to 1.85x1023m2/day, respectively. Deductions from S. revealed that the study area is prone to contamination from the study. Further findings from groundwater modeling, hydraulic conductivity, and transmissivity suggested that the southwestern part of the study area showed more groundwater prospects when compared to other parts of the study area. Within the study, it was observed that curve Q is the most dominant curve within the study area.

Keywords: Aquifer, Vertical, Schlumberger, Vulnerability, Resistance, Depth

Discovery Nature, 2025, 2(4), e8dn3121

PDF

DOI: https://doi.org/10.54905/disssi.v2i4.e8dn3121

Published: 03 September 2025