The WARREDOC team attendees at the Seminar “The Presidential Estate of Castelporziano” of the PhD Course in Landscape and Environment of the La Sapienza University of Rome with a contribution on the water system, the hydrogeological framework and the water-landscape interaction in the Middle Valley of the Tiber, in the urban stretch of the river and in its mouth area (Antonio Annis-Andrea Spasiano-Fernando Nardi).