[2] This tank occupied 4670 acres and its strong 13-meter-tall dam running along a distance of 2 km held over 20 billion gallons of water.

It was this growth in agriculture that opened up the massive trade with South East Asia through the Trincomalee harbor.

In 1820 AD, British Inland Revenue Officer Ralf Bachaus recorded that the whole area can be irrigated if this reservoir is restored.

The Mahavamsa, chronicle of Sri Lanka, states that Mahasen constructed sixteen large tanks and two irrigation canals.

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