🇮🇳 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 · Hydraulic works
Kallur Chola Tank (Kallur Eri) – Thanjavur Outlier
Chola Middle (Rajaraja I) · Tamil Chola (Muvendar)
95-ha Chola eri tank (c.1010 CE) at Kallur — Brihadeeswarar temple hydraulic outlier.
🇮🇳 India · Hydraulic works
Kallanai Grand Anicut East Channel
Early Historic to Medieval · Early Chola, Medieval Chola, Vijayanagara
800-m-east Kallanai east channel with 9-sluice Chola regulator feeding east delta.
🇮🇳 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.
🇮🇳 India · Ancient city
Dholavira
Mature Harappan 2650–2100 BCE (with Early/Late phases 3500–1800 BCE) · Indus Valley / Harappan
Harappan metropolis (2650–2100 BCE) on Khadir island in Great Rann of Kutch, the fifth largest Harappan site covering 100 ha with citadel, middle and lower towns and monumental water management.