see:
- J. R. Fisher, E. Field: The Water System, in: Madaba Plains Project: The 1989 Season at Tell El-`Umeiri and Vicinity and Subsequent Studies (Madaba Plains Project Series), 1997, pp. 176-187
- http://www.madabaplains.org/umayri/
- http://moses.creighton.edu/vr/Umayri/site.html