🇾🇪 Yemen · Submerged site
Qana – Incense Harbour of Hadramawt, Bir Ali
South Arabian to Himyarite (c. 500 BCE – 630 CE) · Hadrami / Himyarite
Hadrami sea harbour rock-cut channel 600 m at –0.5 m off Bir Ali – mole with incense altars.
🇾🇪 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.
🇾🇪 Yemen · Hydraulic works
Sadd Al-Rahwah Dam (Hadramawt Highland Dam)
Himyarite–Hadrami to Rasulid · Hadrami kingdom to Rasulid dynasty
Hadramawt highland: 45-m crescent dam at Shibam hinterland, Himyarite 500 BCE–Rasulid 12th c.
🇾🇪 Yemen · Submerged site
Shabwa – Hadramawt Incense Harbour, Yemen
Qatabanian to Himyarite (c. 700 BCE – 400 CE) · Hadrami South Arabian / Himyarite
Incense road river harbour 200 m silted in Wadi Hadramawt – warehouses sealed 4th c. Himyar sack.
🇾🇪 Yemen · Hydraulic works
Wadi Jirdan Ancient Dam – Hadramawt
Hadhrami Old South Arabian · Hadhramawt kingdom
220-m Hadhrami diversion dam (700 BCE–400 CE) on Wadi Jirdan tributary — Hadramawt palm irrigation.