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
Nissibi Euphrates Bridge Nissibi Euphrates Bridge The Nissibi Euphrates Bridge () is a cable-stayed bridge completed on May 21, 2015, spanning the Lake Atatürk Dam on the Euphrates River at the provincial border of Adıyaman–Şanlıurfa in southeastern Turkey. With the forming of the reservoir lake of Atatürk Dam in 1992, the bridge on the highway Kahta–Siverek–Diyarbakır crossing the Euphrates River was inundated. The traffic between Adıyaman and Diyarbakır had to be diverted in the south to the route over Şanlıurfa. Traffic was maintained also by ferry boats across the lake. To bypass the detour, a new bridge was projected crossing over the Lake