🇮🇳 India · Hydraulic works
Kallanai Kollidam North Sluice Extension
Early Historic to Chola Medieval · Chola (Early and Medieval)
95-m north Kollidam offtake with 12 dovetail sluice bays saving delta from avulsion.
🇻🇳 Vietnam · Ancient city
Go Thap (Óc Eo–Funan)
Óc Eo 100 BCE–300 CE → Funan 200–600 CE → Chenla 600–800 CE → Khmer influence 800–1200 · Óc Eo–Funan (pre–Angkorian Mekong hydraulic with Indianization)
Mekong Delta Óc Eo–Funan secondary city (100 BCE–600 CE) at Go Thap Tháp Mười — 400 ha with Vishnu Garuda and 20 km canal to Oc Eo.