Assessing the Impact of Fractured Zones Imaged by ERT on Groundwater Model Prediction: A Case Study in a Chalk Aquifer in Voort (Belgium)

Fractured and karst aquifers are important groundwater reservoirs widely used to provide drinking water the population. Because of presence fractures with varying geometry properties providing preferential flow paths, fractured highly heterogeneous difficult characterize model. In this context, geophysical methods can relevant spatially distributed data about fractures, that be further integrated in hydrological models. contribution, we present a case study extraction site chalk aquifer Voort (Belgium), for production water. First, vicinity their orientation is imaged using electrical resistivity tomography. Based on available objectives study, it chosen model only component simplify unsaturated zone processes through an average recharge rate. Then, detected included improve calibration predictive capacity The results show set parallel crosses modeled area, whose accordance tectonic setting. Including these model, more satisfactory was achieved, helping better understand hydrogeological behavior aquifer. Finally, acquired knowledge propose new management scenarios minimizing its impact.