🇾🇪 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 · Hydraulic works
Sadd Ba'ta — Wadi Rada Gravity Dam (Yemeni Highlands)
Himyarite (400–580 CE) · Himyarite
Himyarite gravity dam (11 m high, 140 m crest) in Wadi Rada at Ba'ta (1,680 m) with downstream stepped spillway (7 steps, 1.2 m tread) and 1.6 km contour canal feeding Rada basin terraces.
🇾🇪 Yemen · Hydraulic works
Sadd al-Khanas Dam — Wadi Khanas Sabaean Retainer Dam
Sabaean (900–500 BCE) · Sabaean
Sabaean retainer dam (9.5 m high, 220 m crest) on Wadi Khanas tributary 18 km northeast of Marib Dam (1,120 m), with 2.8 km rock-cut feeder canal to Marib north sluice extension.
🇾🇪 Yemen · Hydraulic works
Sadd al-Arim Secondary North Dam Marib
Sabaean to Himyarite · Kingdom of Saba
210-m saddle subsidiary dam 4 km NE of Great Marib storing Jufaynah tributary.
🇾🇪 Yemen · Hydraulic works
Marib Great Dam North Sluice Annex — Northern Annex
Early South Arabian (800 BCE-600 CE) · Sabaean
Marib Great Dam North Sluice Annex — Northern Annex in Marib Governorate, Yemen is a Early South Arabian (800 BCE-600 CE) hydraulic attributed to Sabaean.