Modelling of the Pointe-Noire aquifer system

01Context

Water supply to Pointe-Noire relies on aquifers whose functioning needed to be better understood.

A management model was necessary to anticipate the evolution of the resource.

02Challenges

Sustainably mobilizing and securing the resource requires precise knowledge of its geometry, productivity and quality.

The challenge was to increase the reliability of decisions by reducing hydrogeological uncertainties.

03Mission objectives

• Understanding the functioning of the aquifer system
• Developing a mathematical management model
• Simulating abstraction scenarios
• Guiding sustainable resource management

04Services delivered by EAU-GEF

• Collection and analysis of hydrogeological data
• Model design and calibration
• Simulation of management scenarios
• Synthesis report and recommendations

05Approach & methodology

The approach combined literature review, field investigations, geophysics and hydrogeological interpretation to clarify the functioning of the system.

The results were spatialised to objectify decisions and guide structures.

06Results & added value

The mission provided the client with a solid and well-reasoned basis for sustainable resource management and mobilization.

It demonstrates EAU-GEF's expertise across the entire hydrogeological study chain.