The Heart of Sri Lanka's Irrigation System

Bowatenna Reservoir

The Heart of Sri Lanka's Irrigation System

Bowatenna Reservoir

Know before you go

Location

6.7 km southeast of Naula.

Accessibility
  • By Vehicle 12 minute drive from Naula.
  • Tuktuk is convenient and affordable, a popular choice for travelers.
Opening Hours

8:30AM to 4:30PM

Best Time to visit

Morning & Evening.

Entrance Fee

Entrance Free.

Travel Tips & Advice
  • Carry water, and a hat for some protection.
  • Avoid throwing garbage in reservoir
  • Use Eco – Friendly products.
  • Ask for Local Guidance.
  • Preserve the peace.
  • Be aware of safety regulations, such as swimming restrictions.
  • Be Cautious on Dams & Spillways.
  • Check Weather Conditions.

 

“The Bowatenna Reservoir is more than just a modern water project—it is a continuation of Sri Lanka’s ancient irrigation mastery, a key part of post-independence water resource management, and a significant contributor to hydroelectric power. Its historical relevance lies in how it bridges Sri Lanka’s past and present, playing a role in agriculture, energy, flood control, and national development.”

The Bowatenna Reservoir, located in Sri Lanka’s Matale District, is a significant infrastructure project primarily serving irrigation and hydroelectric power generation purposes. Constructed in 1981, the reservoir is formed by the Bowatenna Dam, a 100-foot-high gravity dam. The dam spans approximately 741 feet in length and plays a crucial role in regulating water flow from the Mahaweli River to support agricultural activities in the region.

In addition to its irrigation functions, the Bowatenna Reservoir contributes to Sri Lanka’s energy sector through the Bowatenna Power Station. Located about 5,800 feet downstream from the dam, the power station houses a single Fuji turbine unit, commissioned in 1981, which adds 40 megawatts of electricity to the national grid.

The reservoir also plays a vital role in water management, especially during periods of heavy rainfall. For instance, on November 26, 2024, six sluice gates of the Bowatenna Reservoir were opened due to rising water levels in the Mahaweli River, prompting authorities to advise residents along the Amban River to exercise caution.

Beyond its functional significance, the Bowatenna Reservoir is surrounded by lush hills and offers picturesque landscapes, making it a serene destination for visitors interested in nature and engineering marvels. Activities such as photography, picnicking, and exploring nearby trails are popular among tourists.

Historical Significance

  • Sri Lanka has a 2,000-year-old hydraulic civilization, with kings like Parakramabahu I and Mahasen pioneering advanced irrigation networks.
  • The Bowatenna Reservoir regulates water from the Mahaweli River, similar to how ancient kings controlled rivers through large tanks (wewas) like Kala Wewa and Parakrama Samudraya.
  • The reservoir’s water management system follows ancient principles of water conservation, diversion, and sustainable agriculture.
  • Historically, Sri Lanka faced seasonal floods and droughts due to monsoons.
  • Bowatenna serves as a regulator of Mahaweli River water levels, reducing flood risks in downstream areas.
  • During high rainfall, sluice gates are opened to prevent overflowing, safeguarding both farmland and communities along the Amban Rive

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