For other uses, see Tigris (disambiguation). Tigris River About 100 km from its source, the Tigris enables rich agriculture outside Diyarbakır, Turkey. Countries Turkey, Syria, Iraq Tributaries - right Wadi Tharthar Cities Diyarbakır, Mosul, Baghdad Source Lake Hazar - elevation 1,150 m (3,773 ft) - coordinates 38°29′0″N 39°25′0″E / 38.48333°N 39.41667°E / 38.48333; 39.41667 Mouth Shatt al-Arab - location Al-Qurnah, Basra Governorate , Iraq Length 1,850 km (1,150 mi) Basin 375,000 km 2 (144,788 sq mi) Discharge for Baghdad - average 1,014 m 3 /s (35,809 cu ft/s) - max 2,779 m 3 /s (98,139 cu ft/s) - min 337 m 3 /s (11,901 cu ft/s) Map of the Tigris-Euphrates basin area [1] [2] Batman River The Tigris ( / ˈ t aɪ ɡ r ɪ s ...