2) The Romans used an inclination of 1:1000. The Quattara basin is 80km from the Mediterranean and 60m lower. So it's not looking good straight away. As the wat

2) The Romans used an inclination of 1:1000. The Quattara basin is 80km from the Mediterranean and 60m lower. So it's not looking good straight away. As the water level rises, the drop will be even less. Also, the amount of water that can evaporate from such a large area is immense, so you'd have to have a rather huge channel for the water coming in just to keep up.