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Giant's Tank

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Coordinates: 08°52′32″N 80°02′00″E / 8.87556°N 80.03333°E / 8.87556; 80.03333
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Giant's Tank
கட்டுக்கரை குளம்
යෝධ වැව Error {{native name checker}}: list markup expected for multiple names (help)
Giant's Tank is located in Northern Province
Giant's Tank
Giant's Tank
Location within Northern Province
LocationNorthern Province
Coordinates08°52′32″N 80°02′00″E / 8.87556°N 80.03333°E / 8.87556; 80.03333
TypeArtificial lake
River sourcesAruvi Aru
Catchment area38 sq mi (98 km2)[1]
Managing agencyDepartment of Irrigation,
Government of Sri Lanka
Water volume31,500 acre⋅ft (38,854,678 m3)[2]
Surface elevation44 ft (13 m)[3]

Giant's Tank (Template:Lang-ta; Sinhala: යෝධ වැව Yōdha Væva) is an irrigation tank in northern Sri Lanka, approximately 10 mi (16 km) south east of Mannar.

History

Some historians have speculated that Giant's Tank is the same as the Mahanama Matha Vapi tank built by King Dhatusena in the fifth century and restored by King Parakramabahu I in the twelfth century.[1][2] On the other hand, Mudaliyar C. Rajanayagam in his book Ancient Jaffna suggests that the tank was probably constructed by the Nagas.[4] Rajanayagam has suggested that the Megisba lake mentioned by Pliny in Description of Taprobane was in fact Giant's Tank.[5]

Consideration was given to renovating the tank during Dutch Governor Willem Jacob van de Graaf's administration in the eighteenth century but nothing happened.[1] Restoration did however begin in the 1880s following a motion in the Legislative Council by P. Ramanathan.[1] Delays by epidemics and other issues meant that restoration wasn't completed until November 1902.[1][6] A 90 ft (27 m) thick, 12 ft (4 m) high, 640 ft (195 m) long stone dam (known as tekkam in Tamil) was built across the Aruvi Aru 22 mi (35 km) from its mouth.[7][8] The waters were then diverted to Giant's Tank by a 12 mi (19 km) inlet channel (alawakkai).[1][8] The tank had a catchment area of 38 sq mi (98 km2).[1] The name Giant's Tank was the English translation of the local name for the tank - Sodayan Kattu Karai (giant built embankment).[1][7] The tank is now known as Kattukarai Kulam in Tamil.[9]

Responsibility for the tank passed from the Public Works Department to the Department of Irrigation in 1900.[10] By the late 1960s the tank's bund was 4.5 mi (7 km) long and 10 ft 4 in (3 m) high whilst the tank's storage capacity was 26,600 acre⋅ft (32,810,617 m3) and its water spread area was 4,550 acres (1,841 ha).[1] There was a 172 ft (52 m) channel flow spill on the right bank and seven sluices.[1] Water from the tank was transferred to numerous minor irrigation tanks via a 24 mi (39 km) main channel and 24 mi (39 km) of branch channels.[1]

The tank's storage capacity was 30,500 acre⋅ft (37,621,196 m3) in 2003 and it was capable of irrigating 24,000 acres (9,712 ha).[9] The tank's height was 11.5 ft (4 m) but it was capable of holding 10 ft (3 m) safely.[9] The tank's storage capacity was 31,500 acre⋅ft (38,854,678 m3) in 2009 and it was capable of irrigating 27,000 acres (10,927 ha).[2]

References

  1. ^ a b c d e f g h i j k Arumugam, S. (1969). Water Resources of Ceylon (PDF). Water Resources Board. p. 333.
  2. ^ a b c Wijesiri, Lionel (20 October 2009). "The giant wakes up Revival of Yoda Wewa". Daily News (Sri Lanka).
  3. ^ de Alwis, S. M. D. L. K. (9 November 2006). "Competition for Water Demands, Management conflicts and Inter-related Issues in Malwathu Oya Basin of Sri Lanka" (PDF). Network of Asian River Basin Organizations.
  4. ^ Rasanayagam, C. (1984). Ancient Jaffna (PDF). Asian Educational Services. pp. 82–83.
  5. ^ Rasanayagam, C. (1984). Ancient Jaffna (PDF). Asian Educational Services. p. 106.
  6. ^ Lucas, C. P. Historical Geography of the British Colonies - Volume I The Mediterranean and Eastern Colonies. Clarendon Press. p. 109.
  7. ^ a b Parker, Henry (1999). Ancient Ceylon. Asian Educational Services. pp. 247–248.
  8. ^ a b Arumugam, S. (1969). Water Resources of Ceylon (PDF). Water Resources Board. p. 331.
  9. ^ a b c "Repairs to Giant's Tank after two decades' neglect". TamilNet. 1 May 2003.
  10. ^ "History". Department of Irrigation, Sri Lanka.
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