| Khatt Atui | |
| Name Other: | Khatt Atoui, Wad Atui, Uad Atui, Oued Atui, Oued Atwiy |
| Map: | Western sahara rel 1989.jpg |
| Map Size: | 300px |
| Pushpin Map Size: | 300 |
| Subdivision Type1: | Countries |
| Subdivision Name1: | Mauritania, Western Sahara |
| Subdivision Type2: | Regions |
| Subdivision Name2: | Dakhlet Nouadhibou, Inchiri (Mauritania) |
| Source1: | northeast of Aousserd, Western Sahara |
| Mouth: | Baie d'Aouati, Atlantic Ocean |
| Basin Population: | 99,599 |
Khatt Atui is a wadi in North Africa. This dry riverbed begins near Aousserd in the disputed territory of Western Sahara and runs southwest through the Dakhlet Nouadhibou and Inchiri Regions of Mauritania,[1] ending at the Baie d'Aouati on the Atlantic coast east of Iouik, Mauritania in Banc d'Arguin National Park.[2]
The Atui basin as defined by the Transboundary Waters Assessment Programme of the Global Environment Facility covers and is home to an estimated 99,599 people.[3] The Mauritanian settlements of Chami (on the highway between Nouakchott and Nouadhibou), Imkebden and N'Talfa are located along the wadi,[4] as is the Tasiast gold mine.[5]
Khatt Atui has been suggested as the location of the lower reaches of a major ancient river, dubbed the Tamanrasett paleoriver, that flowed through the Sahara to the Arguin Basin during humid episodes in the late Quaternary.[6] Early Neolithic archaeological sites have been found along the Mauritanian portion of the wadi.[7]
