Resources:
http://www.water-technology.net/projects/mubarak/
https://www.researchgate.net/publication/259289338_The_Shrinking_Toshka_Lakes_in_the_Google_Earth_Images
https://earthobservatory.nasa.gov/IOTD/view.php?id=78531&eocn=image&eoci=related_image
https://earthobservatory.nasa.gov/IOTD//view.php?id=6175
https://en.wikipedia.org/wiki/Toshka_Lakes
Article The Shrinking Toshka Lakes in the Google Earth Images