The importance of understanding groundwater potentials: Anambra State, Nigeria

In 2022, a water project was initiated to investigate the groundwater potentials and aquifer vulnerability in select rural communities. The project utilized geological and geophysical field data to assess the water resources in the area.

The project team carried out geological field mapping, surface traversing, contact identification and tracing, and detailed outcrop studies and description. They also conducted rock and water sampling and analysis to identify and characterize the lithology in the area. Vertical Electrical Sounding (VES), 2D Electrical Resistivity Profiling, and Induced Polarization survey methods were used to image subsurface electrical property distributions and identify/characterize aquifer, using Ohmega meter and Geomative GD-10.

Noble Geoservices Ltd. and Keydrill Resources Nigeria Limited — two local small-holding borehole drilling companies — also supported this project. With their support, a borehole exploiting an aquifer at a depth of about 600 feet was developed.

Data acquisition by a team of Principal Investigators and students during 2D ERT and IP profile survey using the Geomative GD-10 equipment. Detailed outcrop description and rock sampling in the field during geologic field mapping.
Vertical Electrical Sounding data acquisition using the Ohmega meter.

Even though this GWB water project has officially ended this year, appropriate lines of communication and consultancies have been established between the local communities and researchers. The research results and deliverables are aimed to be sustainable and in line with improving water supply for the communities’ benefit in near and long term. Regular dialogues and interactions between the researchers and community members will further strengthen the continued offerings and learnings from this project.

To learn more about this project, please visit GWB’s website.