Nachchaduwa Wewa is a 3rd-century flood-control marvel from King Mahasen's reign, still fed today by King Dhatusena's precision-engineered Jayaganga canal built centuries later.

Why visit Nachchaduwa wewa

• Ancient Engineering Marvel: The reservoir is one of sixteen large reservoirs believed to have been built by King Mahasen. It was designed to control huge floodwaters.
• Interconnected Water System: The reservoir receives water from Kalawewa through the ancient Jayaganga (Yodha Ela) canal. This shows a sophisticated water management network.
• Historical Significance: The reservoir is referenced in the ancient Mahavamsa chronicle. It played a vital role in providing water to the ancient city of Anuradhapura.
• Role in Flood Protection: King Mahasen built this reservoir for two main reasons. One was to supply water to Anuradhapura. The second was to protect the city from floods.
• Resilience and Restoration: The reservoir was severely damaged by a flood in 1957. It was later successfully restored, demonstrating its ongoing importance.