🇮🇳 India · Hydraulic works
Dholavira Rock-Cut Reservoirs – Rann of Kutch
Early to Mature Harappan to Late Harappan · Harappan (Sindhu–Sarasvati)
16 Harappan rock-cut reservoirs (2600–1900 BCE) — 250,000 m³ desert catchment, Dholavira.
🇮🇳 India · Ancient city
Lothal
Mature Harappan 2450–1900 BCE · Indus Valley / Harappan
Harappan port town (2450–1900 BCE) on Sabarmati palaeochannel near Gulf of Khambhat, famed for 37×22 m brick basin interpreted as dockyard and tidal lock.