The Karasu () or Aswad () is a river in the provinces of Gaziantep and Hatay in Turkey. For part of its length it forms the border with Aleppo Governorate in Syria.US Bureau of Intelligence and Research: International Boundary Study No.163 (1978) p.12 It joins the Afrin River at the site of the former Lake Amik. Its waters now flow to the Orontes River by a canal.Antakya Chamber of Commerce: Geographical location
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