Iraq's Water: Another Threat in Paradise?
IRAQ depends on the Tigris and Euphrates rivers for drinking water,  supplying industry and irrigating massive swathes of farmland. The two  rivers account for 98% of the country’s surface water. Until recently  the government’s greatest concern has been the fact that the source of  neither river is in the country. In the past few decades dams and  diversions across Turkey and Syria have steadily reduced the quantity of  water reaching Iraq.
Now Iraq has a greater concern. Both waterways flow through areas of  northern Iraq controlled by the Islamic State (IS), an extremist group  that grew out of al-Qaeda in Iraq and today claims an area the size of  Jordan straddling Syria and Iraq. On August 8th America began air  strikes against the group, after IS carried out a series of attacks that  targeted minorities including Christians and Yazidis and threatened the  semi-autonomous northern area of Kurdistan. In one of those attacks, on  August 7th, IS took control of Mosul dam.
After targeting oil fields in Syria and Iraq, IS may now have its  sights trained on water. Mosul is not the only dam for which IS has  fought. After taking large parts of Iraq in a campaign that started in  Mosul, the country's second largest city, in June, on August 1st IS  battled to take control of Haditha dam on the Euphrates in the eastern  province of al-Anbar. The fighters were repelled by Iraqi troops and  Sunni tribes, but reports suggest the offensive continues.
IS may want to control these resources in order to bolster its claim  to run a state. But it may have additional motives. Baghdad and southern  Iraq rely on water being released from these dams. So IS could cut off  the water, limiting flows to Baghdad and the south or, conversely,  release large amounts that could cause floods (although this would also  flood areas controlled by IS, including Mosul city, south of the dam).
Any change in water flows would also affect the availability of food,  because Iraq is heavily dependent on irrigation to grow wheat, barley,  rice, corn and fruit and vegetables. IS has already taken control of a  number of government wheat-storage sites in Ninewa, Kirkuk and  Salaheddin provinces. Some reports suggest that it is using these to  supply flour to residents in the provinces north of Baghdad who are now  cut off from a public programme that distributes flour, rice, sugar, and  sunflower oil. Others reckon IS will sell the wheat—like it has oil—to  local mills, bakers and farmers to generate additional funds. Read on ... 
