The objective of this article is the mathematical modeling and numerical simulation in transitory mode of the groundwater level of plain of Sourou (Burkina Faso). The modeled domain is fractured. We supposed the fractures as porous media and the groundwater flow equation was resolved using the finite element method in FreeFem ++.

The evolution of the piezometric head was simulated between 1960 and 2030. The results obtained in the simulations helped to understand the variation of the groundwater level and to highlight the role of fractures in the piezometric depression.

mathematical modeling, transitory mode, fractured porous medium, finite element method.