The scientific sources of the information:
Armando Danella — Ambiente Venezia;
Magistrato delle Acque — Water Board Plan February 2012 — Up-dating of the water accesses to the Maritime Station in Venice and modernisation of the border areas of the Contorta-Sant’Angelo canal;
Municipal Counsellor Renzo Scarpa;
Report by Prof. Stefano Boato for the Ministry of the Environment;
For those who want further information please see Dossier Ambiente Venezia at this link