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3 places to sift through. Narrow by kind, country, period or how firmly each one is established — contested and pseudoarchaeological claims are labelled here, never hidden.
🇮🇳 India · Hydraulic works
Harappan (Early to Late Harappan 3000–1800 BCE) · Harappan (Indus Valley Civilization Kotada Timba)
Harappan desert city 16 rock-cut reservoirs and dam-fed canals 3000–1800 BCE on Kutch island.
🇮🇳 India · Hydraulic works
Medieval Indian (Vijayanagara Empire) · Vijayanagara Hindu imperial (Telugu–Kannada)
Vijayanagara 5-km aqueduct with 19 tanks and stepped pushkarani feeding 500k city 14th–16th c.
🇮🇳 India · Hydraulic works
Medieval Tamil (Pallava–Chola) · Tamil Dravidian (Pallava and Chola imperial)
Pallava eri tank 2.1×1.4 km 740 CE still irrigating 295 ha via tumpu sluices, inscription-documented.