ABSTRACT
The recharge processes have been evaluated for several main karst massifs of southern Italy, including the Terminio, Cervialto and Matese massifs, characterised by wide endorheic areas. The annual mean recharge has been estimated with GIS-basedtools, from regression of annual mean values of different ground-elevated rain gauges and thermometers. The recharge has been separated from endorheic areas and the other areas of spring catchment, and the ratio between the output spring and input rainfall has been estimated (the recharge coefficient). Endorheic areas are exploited for hydro-electrical purpose, especially in the Matese massif, and several hydraulic works have modified the natural recharge processes and the regime of karst springs.
