Danube–Tisa–Danube Canal (DTD) is a canal system in Serbia. It covers the northern part of Serbia – the territory of Vojvodina (Bačka and Banat regions), with the total area of about 12,700 km². The total length of the dug main canals is 929 km, including new and old canals and streams which were completely or partially reconstructed and thus included in the new system. In the basic canal network there are 51 structures: 24 gates, 5 safety gates, 6 pumping stations, 180 bridges and 16 locks. The lock on the Begej river is one of these locks.