Its construction led to the creation of Lake Assad, the country's largest water reservoir30 with a projected capacity to irrigate 640.000 ha of land.3' The third-largest dam on the Euphrates in Syria, the Baath Dam. In addition, two development projects in the Balikh/Jallab sub-basins use water imported from Lake Assad, while water from the Sajur River is also used for irrigation. This volume should be added to the 3,586 MCM used in operational irrigation projects.31 Official data states that 206,987 ha were irrigated by the Euphrates River in 2010 (Figure 8) in addition to 59,550 ha from the Khabour and Jagh Jagh Rivers, amounting to almost 270,000 ha.37 Applying a commonly accepted rate for irrigation requirements,38 this suggests an irrigation water use of about 2,700 MCM from the Euphrates, Khabour and Jagh Jagh Rivers.