Question 1

What is Thekkama Anicut?

Accepted Answer

Thekkama Anicut is an ancient stone diversion weir built across the Malwathu Oya river in Sri Lanka's North Central Province. Constructed by King Dhatusena in the 5th century CE, it channelled water into a 25-kilometre canal to feed the Yodha Wewa reservoir. The structure is made from granite blocks laid on a natural rock foundation at an angle across the river.

Question 2

Who built the Thekkama Anicut and when?

Accepted Answer

The anicut is attributed to King Dhatusena, who ruled the Anuradhapura kingdom from around 459 to 477 CE. He was one of ancient Sri Lanka's most prolific builders of irrigation infrastructure, and this structure formed part of his wider programme to expand paddy cultivation across the dry zone.

Question 3

How big is the Thekkama Anicut?

Accepted Answer

The anicut is approximately 200 metres long, 27.5 metres wide, and rises to about 3.7 metres in height. Three large overflow openings on the northern side allow excess floodwater to pass through, protecting the structure during the monsoon.

Question 4

Is Thekkama Anicut connected to Giant's Tank?

Accepted Answer

Some historians have suggested that the reservoir fed by the Thekkama diversion system — Yodha Wewa — may be the same structure as Giant's Tank (also called Mahanama Matha Vapi), which the chronicles record as built by Dhatusena and restored by Parakramabahu I in the 12th century. The identification is not universally accepted, but the geographic and historical evidence is considered plausible by several scholars.

Question 5

Can tourists visit Thekkama Anicut?

Accepted Answer

Yes, the site is accessible to visitors, though it has no formal tourist infrastructure such as car parks, ticketing, or guided tours. A private vehicle and a driver familiar with the area are essential. The granite weir can be viewed up close, and the surrounding dry-zone landscape adds to the sense of remoteness.

Question 6

What is the best time of year to visit the anicut?

Accepted Answer

Late January to early March is generally considered the most comfortable period, as the north-east monsoon has passed, water levels in the river are still reasonably high, and temperatures are not yet at their peak. Visiting during or just after the north-east monsoon (November to January) gives the most dramatic views of water flowing through the overflow channels.

Question 7

What other attractions are near Thekkama Anicut?

Accepted Answer

Wilpattu National Park lies to the south-west and is the nearest major attraction, making it a natural pairing for a day trip. The ancient city of Anuradhapura, with its stupas and monastic ruins, is also within reasonable driving distance and provides broader context for the hydraulic engineering traditions that produced the anicut.

Question 8

Why did ancient Sri Lankan engineers build anicuts at an angle rather than straight across the river?

Accepted Answer

Setting a weir at an angle to the river current increases the effective length over which water is deflected, improving diversion efficiency while reducing the direct hydraulic pressure on any single point of the structure. This design principle was well understood by ancient Sri Lankan hydraulic engineers and appears in several surviving ancient works across the dry zone.

Thekkama Anicut

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