The title evokes a cordinated set of programmes, plans and projects developed since 1987 in order to preserve and enhance the Po river and floodplains, as a basic resource for the regional social and economic sustainable development. It includes he first proposal of “Progetto Po” by IRES (Istituto Ricerche Economiche e Sociali, 1989), the “Progetto Territoriale Operativo” by Regione Piemonte (PTO, 1995), the “Piano d’area” of the Po river regional Park (PdA, 1995), referring to the whole fluvial strip in Piedmont. The set also contains some projects for specific critical areas, relevant for the requalification and transformation of the river strip.