سد الفرات
Syrians have long used the Euphrates for irrigation, but, because the major systems were destroyed centuries ago, they now make only limited use of the river's flow. In the mid-1980s, the Euphrates River accounted for over 85% of the country's surface water resources, but its water was used for only about two-fifths (200,000 hectares) of the land then under irrigated cultivation. In 1984, about 44% of irrigated land still used water from wells. Several project studies were conducted after World War II, and, in the 1960s, the Soviet Union agreed to provide financial and technical assistance for the Tabqa Dam, a large hydroelectric power station, and portions of the major Euphrates irrigation project.