Great Bačka Canal (Serbian: Велики бачки канал/Veliki bački kanal) is a canal in Serbia which runs from Bezdan (on Danube) to Bečej (on Tisa). The canal is 118 km long and it is part of Danube-Tisa-Danube Canal system. Excavation of Great Bačka Canal begun in 1794 and lasted until 1801. Bed of the canal is 17 m wide and at the top is 25 m wide. Average depth is 3 m. Water in the canal is very polluted due to fact that it runs through industrial towns such as Vrbas, Kula and Crvenka.