Tigris–Euphrates river system border. Since the 1960s and in the 1970s, when Turkey began the GAP project in earnest, water disputes have regularly occurred in addition to the associated dam's effects on the environment. In addition, Syrian and Iranian dam construction has also contributed to political tension within the basin, particularly during drought. The general climate of the region is subtropical, hot and arid. At the northern end of the Persian Gulf is the vast floodplain of the Euphrates, Tigris, and Karun Rivers, featuring huge permanent lakes, marshes, and forest. The aquatic vegetation includes reeds, rushes, and papyrus, which support numerous species. Areas
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