🇾🇪 Yemen · Hydraulic works
Marib Dam East Wadi Dhana Barrage
Sabaean to Himyarite · Kingdom of Saba (Sabaean South Arabian) then Himyar
480-m east rockfill barrage of Great Marib Dam at Balaq Hills gap.
🇾🇪 Yemen · Hydraulic works
Sadd el-Arim Secondary Dam — Marib North Spillway
South Arabian (Sabaean to Himyaritic) · Sabaean Saba and Himyarite
Marib north secondary 750-m earthen with Almaqah sluice temple 50 musnad inscriptions, Sabaean 750 BCE spillway.
🇪🇬 Egypt · Hydraulic works
Aswan Old (Low) Dam North Spur — First Cataract Gravity Buttress
British colonial (Anglo-Egyptian) · Anglo-Egyptian, French engineers
1902 610-m gravity masonry 180-sluice Low Dam north spur 6 km above High Dam, world's largest masonry then.
🇾🇪 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.
🇮🇷 Iran · Hydraulic works
Kebar Dam South Spillway Extension (Kebar Secondary Spill)
Mongol Ikhanid–early Timurid (1300–1400 CE) original; Safavid extension 1680 · Ilkhanid–Safavid
South-bank secondary spillway extension 0.4 km south of main Kebar arch dam (26 m high, 55 m crest, oldest surviving arch dam c.1300, already in DB as kebar-dam-qom-iran) at 1,520 m.
🇮🇷 Iran · Hydraulic works
Shushtar Band-e Ahmadi Weir (Shushtar Ahmadi Bridge-Dam)
Safavid with Sasanian spolia · Safavid Khuzestan
Band-e Ahmadi: 180-m Safavid 1680 bridge-dam 4 km south of Shushtar UNESCO, 12 arches.