"For more than 4,000 years, lands irrigated by the Tigris and the Euphrates have been the scene of violent conflict. History has been shaped by geography and in particular, access to water. The Southeast Anatolia Project in Turkey (referred to as the 'GAP') is a major reclamation and hydropower project that has been a government priority since 1961. When complete, the project will consist of twenty-one dams, and irrigate an additional two million hectares of land in southeast Turkey. The GAP has direct consequences for Iraq and Syria, both countries are heavily dependent on the waters of the Tigris and the Euphrates. The impact of the GAP could ultimately reduce the flow of fresh water to Syria and to Iraq (Kolars and Mitchell 1991). These trans-boundary water issues have the potential to further destabilize an already tense region as the GAP is reaches full development in the next twenty years."
Army Environmental Policy Institute: http://www.aepi.army.mil/