🇮🇳 India · Hydraulic works
Kallanai Grand Anicut
Sangam Period, Early Historic to Colonial · Tamil Chola (Sangam)
2nd century Chola granite anicut (329 m, 150 CE) on Kaveri River, oldest functional dam in world irrigating one million acres.
🇮🇳 India · Hydraulic works
Kallanai North Channel — Grand Anicut Kaveri North Branch
Classical Sangam to Colonial · Early Chola, British colonial (Cotton)
Chola Karikalan 2nd CE north Kollidam regulators with 12 vents and 1804 Cotton arches, oldest working dam distributary.
🇮🇳 India · Hydraulic works
Kaveripakkam Eri (Tank) — Pallava Hydraulic Reservoir
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.
🇮🇳 India · Submerged site
Poompuhar – Sangam Drowned Port of Kaveripumpattinam
Iron Age Sangam to Early Chola (c. 500 BCE – 500 CE) · Tamil Sangam / Early Chola
Sangam Chola drowned wharf 1.5 km at –2 to –4 m off Kaveri mouth – U-breakwater at –4 m.
🇮🇳 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 · Temple complex
Brihadeeswarar Temple, Thanjavur
Chola 1003–1010 CE · Hindu (Shaiva, Tamil Chola)
Chola granite imperial vimana 66 m still tallest pre-modern; capstone ramp mystery.
🇮🇳 India · Hydraulic works
Kallanai South Sluice — Grand Anicut Vennar Distributary Head
Chola Early historic to Medieval (100 – 1030 CE) · Tamil Chola hydraulic statecraft
South Vennar regulator of 2nd-c Chola anicut with Rajendra I inscriptions 1012 CE.