The Naviglio Grande is a canal in Lombardy, northern Italy, joining the Ticino river near Tornavento (23 km south of Sesto Calende) to the Porta Ticinese dock, also known as the Darsena, in Milan. It drops 34 m over 49.9 km. It varies in width from 22 m to 50 m from Tornavento to Abbiategrasso, dropping to 15 m between there and Milan.