Lake Mariout (Arabic: بحيرة مريوط Boḥēret Maryūṭ, IPA: [boˈħeːɾet mɑɾˤˈjuːtˤ], also spelled Maryut or Mariut), is a brackish lake in northern Egypt near the city of Alexandria. The lake area covered 200 square kilometres (77 sq mi) and had a navigable canal at the beginning of the 20th century, but at the beginning of the 21st century, it covers only about 50 square kilometres (19 sq mi). Etymology The name of Lake Mariout derives from the Hellenized name of Mareotis (Ancient Greek: Μαρεῶτις) or Marea, which was named in the Ptolemic Period. Overview In antiquity, the lake was much larger than it is now, extending further to the south and west and occupying around 700 square kilometres (270 sq mi). It had no mouth connecting it to the Mediterranean, being fed with Nile water via a number of canals...