Le fonti d’archivio al servizio della governance del territorio per la ricostruzione degli antichi assetti idrogeologici

ARCHIVE SOURCES AS A MEAN OF TERRITORIAL GOVERNANCE FOR THE RECONSTRUCTION OF ANCIENT HYDROGEOLOGICAL STRUCTURES - This work examines the complex hydrogeological dynamics of the lower Valle dell'Amaseno (Regione Lazio), an area that, until the Integral Reclamations carried out in the Thirties of the Twentieth century, has been strongly influenced by the unpredictable and harmful behavior of the homonymous river. This happened for different reasons, first of all the negligence of the population and the local administration with regard to a constant routine maintenance caused by the ab- sence of a proper hydraulic culture. This work is aimed at identifying solutions and tools used over the centuries to solve the hydraulic problems. Our analysis has been carried out through the critical examination of the geostorical sources which proved to be useful and interesting. Among these it is worth mentioning the cartographic source, whose analysis allowed us to identify the causes of the harmful and repeated flooding of the watercourse, understand forms and methods of human intervention and assume virtuous territorial management strategies.