HYDRODYNAMIC FUNCTIONING OF THE LOBO RIVER RESERVOIR, WEST-CENTRAL OF CÔTE D’IVOIRE

Built to improve water supply for the populations of the city of Daloa, the Lobo River reservoir is no longer functioning properly due to human activities near its reservoir. This study, based on a 2D hydrodynamic model, carried out with the Mike21 HD software, allowed the reconstruction of the flows in the Lobo River reservoir. The results of the simulation indicate that the hydrodynamic model could reproduce the variation of water levels at the free surface of the reservoir. Also, the results are very sensitive to the boundary conditions of the model but also to the initial conditions. The results of the influence of pumping on the dynamics of water levels in the Lobo River reservoir showed that water levels are not significantly modified by pumping (less than 1.3 mm). Therefore, pumping has little impact on the hydrodynamics of the Lobo River because the pumped flows are much less than the inflow to the reservoir.