🇸🇾 Syria · Hydraulic works
Qasr al-Hayr Upper Spring Canal — Palmyra Steppe Upper Bisayta Canal
Umayyad (727 CE Hisham) · Umayyad
Upper spring canal 6 km northeast of Qasr al-Hayr al-Gharbi palace (620 m) feeding into main Gharbi 11-km canal (already in DB as qasr-al-hayr-al-gharbi-canal).