The Batman River is a major tributary of the Tigris, joining it near the source of Tigris called Dicle River in southeast Turkey. It originates in the Anti-Taurus Mountains (at the Sason and Genç mountains) and flows approximately from north to south, passing near the city of Batman and forming a natural border between the Batman Province and Diyarbakır Province. The historic Malabadi Bridge (built in 1146–1147) crosses the river near the town of Silvan. The region along the Batman River is known for its oil fields. The Batman Dam (Turkish: Batman Baraji, B. de Batman on the map) was built in 1999 in the upstream (38°09′36″N 41°12′06″E / 38.160088°N 41.201574°E), together with the associated reservoir and hydroelectric power plant.