Rambakan Oya Dam

The Rambakan Oya Dam is an embankment dam in Maha Oya, Eastern Province, Sri Lanka. The reservoir was designed and constructed by the Sri Lanka Mahaveli Authority and currently functions under the direction of the Ministry of Irrigation and Water Resources Management.[1] It have been created by building an Earthen dam of which is about 1225m in length across the river of Mundeni Aru.[2]

Rambakan Oya Dam
Location of Rambakan Oya Dam in Sri Lanka
CountrySri Lanka
LocationMaha Oya
Coordinates7°27′4.85″N 81°24′20.47″E
PurposeIrrigation and Domestic water supply
StatusOperational
Construction began12 February 2007
Opening date20 July 2013
Owner(s)Ministry of Irrigation
Dam and spillways
Type of damEarthen dam
Height24.7 m (81 ft)
Length1,225 m (4,019 ft)
Width (crest)7 m (23 ft)
Spillways2
Spillway typeRadial Gate
Spillway capacity554.75 m3/s (19,591 cu ft/s)
Reservoir
CreatesRambakan Oya Reservoir
Total capacity56,000,000 m3 (2.0×109 cu ft)
Catchment area129.5 km2 (50.0 sq mi)

The Rambakan Oya reservoir project is a multipurpose irrigation project which is commissioned to find a solution for the drinking water issue and irrigation problems in the area.[3] It is the 10th zone of Mahaweli Development scheme and located bordering Badulla, Monaragala and Ampara districts.[4]

History

Ancient time

There are archaeological evidences, those reveals about previous attempts to construct an irrigation tank here during the ancient time periods.[5] According to them there are different legends and archaeological views on ancient construction of Rambakan Oya Reservoir. It is believed that construction of Rambaken Oya Reservoir was commenced by prince Giri Abaya who ruled the East, in third century, B.C. According to some other historical evidences it was commenced by Prince Saddhatissa (137-119 BC).

Ruins
This nearby structure is believed to be made for the sluice gate of the tank

There is a one-mile longed old earthen dam can be seen, near to the newly constructed dam. It was constructed between Gorikanda and Galkanda with rip rap, in high quality. Around 250 feet long dressed stones made to use for the twin Barrel Sluice are still remaining in surrounding. Any way there is no evidence to prove that the construction was completed or the reservoir was functioned.

Near to the old Sluice, a stone slab inscription belonging to 12th – 13th centuries can be seen and which identified as Rambakan Oya Slab Inscription. It describes that the stone canal was built by Liyana Nayakayan and Kanathkan Vahanse, who lived in the Gal Weta area.[6]

Recent project

The recent project to develop the Rambakan Oya reservoir was commenced on 12 February 2007[7] and the opening ceremony was held on 20 July 2013 with the participation of then Sri Lanka President Mahinda Rajapaksa and Irrigation and Water Resources Management Minister.[8]

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See also

References
  1. "Rambukkan Oya Reservoir". development.lk. 22 July 2013. Retrieved 10 November 2015.
  2. "Rambukkan Oya". Irrigation Departmaent. Retrieved 10 November 2015.
  3. "Rambaken Oya reservoir built with local expertise, commissioned". asiansun.lk. Retrieved 10 November 2015.
  4. "Rambaken Oya Project". news.lk. 6 October 2011. Retrieved 10 November 2015.
  5. "Rambakanoya Tank-Rambakan Oya Old Construction". srilankatravelnotes.com. Retrieved 10 November 2015.
  6. "Rambakan Oya Ruins of Ancient Granite Canal – අම්පාර රඹකැන් ඔය ගල් ඇල". amazinglanka.com. Retrieved 10 November 2015.
  7. Naalir Jamaldeen (21 July 2013). "Rambakan Oya irrigation project commissioned". sundayobserver.lk. Retrieved 10 November 2015.
  8. "Rambakan Oya Multipurpose Irrigation Project:'Landmark in country's irrigation history'". dailynews.lk. 2 July 2013. Retrieved 10 November 2015.
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