Category:Tigris River

The Tigris River is the east boundary and the Euphrates River is the west boundary that define Mesopotamia. The river flows south from the Taurus Mountains in eastern Turkey, then becomes the border between Syria and Turkey and eventually flows into Iraq. It unites with the Euphrates River near Basra and is known as Shatt-al-Arab from there to the Persian Gulf where it empties. According to ancient historians, the Tigris and Euphrates rivers had separate outlets to the Persian Gulf.