🇾🇪 Yemen · Hydraulic works
Wadi Jirdan East Spate Dam (Eastern Hadramawt Jirdan Spate Canal System)
Himyarite to Zaydi 380–980 CE Hadramawt east · Himyarite Jirdan Hadramawt then Zaydi highland (Yemen)
Dual spate weirs 85+62×2.8 m gabion with 4 spillways 12 m feeding 6.2 km distributary 38 ha: Himyarite 380 Zaydi 980.