Water criticality in the Colli Albani (Rome, Italy

The Colli Albani Hydrogeological Unity has a good regional water resource. The geological setting of the area has been defined reconstructing the morphology of roof of prevolcanic substratum and the geometry of the aquifers by the realization of cartographies made of several profiles to different scales. The project of hydrogeological surveying of wells, springs and discharge’s streams have been led to define the state of conservation of water resources. The results of this research have underlined a distributed and relevant drawdown of ground water table and of river capacity network. Specific studies, supported by cartographies elaborated by GIS, have been led to define all the parameters concerning the hydrogeological balance: precipitation, evapotranspiration, runoff, effective infiltration, withdrawals. The analysis of the hydrogeological balance, have led to a definition of specific rules for the management of water resources in order to recover the situations of over-exploitation.