Modellazione numerica per la definizione di aree di protezione di sorgenti in acquiferi fratturati non carsici

A finite-differences groundwater flow model (MODFLOW 2000) is applied to determine the extension of the zone of contribution and of different zones of travel for an important municipal water supply spring in silico-clastic turbiditic fractured aquifer in Northern Apennines (Italy). Model implementation and calibration was oriented and supported by 2 years continuous monitoring of spring discharge and rainfall and experimental determination, in a nearby analogous hydrogeological context, of infiltration coefficient, effective porosity and average groundwater linear velocity. The results are compared to existing protocol of WHPA location for springs.