Tigris–Euphrates river system Tigris–Euphrates river system The Tigris and Euphrates, with their tributaries, form a major river system in Western Asia. From sources originating in eastern Turkey, they flow by/through Syria through Iraq into the Persian Gulf. The system is part of the Palearctic Tigris–Euphrates ecoregion, which includes Iraq and parts of Turkey, Syria, Iran, Saudi Arabia, Kuwait, and Jordan. From their sources and upper courses in the mountains of eastern Anatolia, the rivers descend through valleys and gorges to the uplands of Syria and northern Iraq and then to the alluvial plain of central Iraq. The rivers flow in a south-easterly direction
Euphrates Viaduct Euphrates Viaduct The Euphrates Viaduct is a motorway bridge across the Euphrates between Belkıs, Nizip, Gaziantep Province and Birecik, Şanlıurfa Province in Turkey. Built up to 2007, it is the longest river bridge in Turkey. Buses and other cars going from the three big cities (Istanbul, Ankara and Izmir) to Diyarbakır, play an important role on this viaduct. Cars going to Diyarbakır can also use the Kömürhan Bridge which carries state roadway between Malatya and Elazığ. The viaduct is a part of the Adana-Gaziantep-Urfa Motorway, which will be extended up to Habur border gate in the Iraqi border/frontier. The viaduct