The Kayacık Dam impounds the Ayfinar Deresi, one of the two streams that join south of Gaziantep to form the Sajur River. It is located in Gaziantep Province, Turkey. The dam was constructed between 1993 and 2005 as part of the Southeastern Anatolia Project (Turkish: {{{1}}}Güneydoğu Anadolu Projesi, or GAP). It is 45 metres (148 ft) high and has a volume of 1,853,000 cubic metres (65,400,000 cu ft).