Delimitation of the hidrogeological units of Catalonia (aquifers, aquitards, aquicludes and aquifer systems), i.e. those parts of the lithosphere with distinctive parameters for water storage and conduction. The data model of this geoinformation is based on the technical specifications of geological data of the INSPIRE Directive (2007/2/CE).

Continuous digital hydrogeological cartography 1:25,000 is a set of geothematic information related to the quantitative and qualitative characteristics of groundwater, the environment that contains it and the associated hydrogeological elements such as wells, piezometers, springs and water mines.