Nuwara Wewa, built by King Valagamba in the 1st century BC, is Anuradhapura's largest ancient reservoir, spanning 12 sq km with a 4.25-mile-long bund.
Nuwara Wewa (Anuradhapura) Nuwara Wewa (lit: The City Tank; Sinhala: අනුරාධපුර නුවර වැව) is a reservoir in Anuradhapura District, Sri Lanka. It is situated on the east side of the Malwatu Oya River and about 2.5 km distance from the present town. History
According to the view of Parker, this tank is believed to be a work of the early part of the 1st century B.C. probably during the reign of King Valagamba (103, 88-77 B.C.) of Anuradhapura (Parker, 1909). and it has been recorded in the Thuparama Slab Inscription of King Gajabahu I (114-136 A.D.) as the "Nakara-vapi" tank (Arumugam, 1969; Nicholas, 1963; Paranavitana, 1933). It was enlarged, improved and added a feeder channel from Nachchaduwa Wewa during the reign of Moggallana II [(535-555 A.D.) Arumugam, 1969]. It was utilized partly for irrigating rice fields and partly for supplying water to adjoining monasteries and suburbs (Parker, 1909). The present tank was restored in 1890 (Arumugam, 1969). The reservoir Except for the drainage from its own catch…