The maximum storage capacity of the major dams and reservoirs (>144 BCM) on the Euphrates exceeds the natural annual flow volume of the river (30 BCM) by four to five times. Its water infrastructure projects and programmes, particularly GAP, have greatly impacted water resources throughout the basin, modifying the natural flow regime of the Euphrates and affecting other riparians' water use patterns. It is the farthest upstream of a series of Turkish dams on the Euphrates, serving the dual purpose of hydropower generation and flow regulation.25 The Karakaya Dam.