This canal is known as the second longest in the world and its main tributary being the Canandaigua Outlet, what canal am i speaking of?
Canandaigua Outlet The Canandaigua Outlet is a main tributary which feeds the Erie Canal and Clyde River in Wayne County, New York, United States. It begins at Canandaigua Lake in nearby Ontario County and flows approximately 34 mi north before emptying into the Erie Canal in the hamlet of Lyons. A number of tributaries feed the Canandaigua Outlet along its route. It is the primary outflow for Canandaigua Lake.
Naviglio Grande 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. Initially carries 63 m³ per second, 116 outlets take water to irrigate 500 square kilometres leaving the canal 12 m wide and carrying 12 m³ per second as it enters the dock.