See:
- Iain Browning, Jerash and the Decapolis. 1982, pp. 213-214
- http://www.romanaqueducts.info/aquasite/gerasa/foto2.html
- Jarash water project: Report on 2013 field season - David D. Boyer. https://publication.doa.gov.jo/uploads/publications/79/ADAJ_2017_58_-375-412.pdf