Reclamation and Irrigation Boards receive a quota at the beginning of every year (availability versus needs). Individual farmers, in their turn, are also subject to quotas or abstraction requirements. This contains a complete set of databases and tools concerning land use, irrigation networks and economic data in eight regions of southern Italy (Abruzzo, Molise, Apulia, Campania, Basilicata, Calabria, Sicily, Sardinia).