deterministic model is a complicated process, especially in complex
where the quantity and the quality of the measured data arc not
unconfined alluvial aquifer is the main water resource in the lower valley of Vat
river, French Riviera,
but it faces a threat of shortage and pollution. Despite numerous
studies, the dynamics of the groundwater flow in the alluvial aquifer
characteristics of the rivet-aquifer exchanges are still partially
Therefore the local water management service requires a decision
PSS) based on numerical models to ensure a better groundwater
hydraulic model is set up with FEFLOW software by considering
evapotranspiration, groundwater extraction and river/aquifer exchanges.
non-documented groundwater extraction for agricultural use and the
rates in the riverbed along the river have been calibrated. The model
validated with a simulation of 7266 days. The model is applied to
scenarios of flood and drought events, the pollution events in the
aquifer in the valley and the seawater intrusion in the estuary of Var
These case studies contribute to increase the knowledge of the aquifer.
conception of the DSS tool is presented as the last example of model
application. A coupling interface is developed thanks to a Java program
enables an automatic exchange of data between the groundwater flow
the surface water flow model built with MIKE 21. More tests should be
validate the coupling interface.