List of dams and reservoirs in Sri Lanka

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Hydroelectricity accounts for nearly half of the installed power capacity of Sri Lanka.

The following page lists most dams in Sri Lanka. Most of these dams are governed by the Mahaweli Authority, while the Ceylon Electricity Board operates dams used for hydroelectric power generation. Hydroelectric dams, including small hydros accounts for nearly half of the installed power capacity of Sri Lanka.

Sri Lanka is pockmarked with a large number of irrigation dams with its water resource distributed across nearly the entirety of the island for agricultural purposes via artificial canals and streams. Utilization of hydro resources for agricultural production dates back pre-Colonial era, with current crop productions now largely dependent on these water resources.

Dams in Sri Lanka[edit]

The Victoria Dam on 15 April 2011. Three days after its 26th anniversary of opening.
Upstream view of the Kotmale Dam.
Open spillways of the Rajanganaya Dam.

Irrigation dams with a length and height of more than 100 m (330 ft) and 10 m (33 ft) are listed, including all the state-run hydroelectric power stations. Privately owned "small-hydro" facilities (which are limited to a maximum nameplate capacity of 10 MW), are not included in this list. Nearly all hydroelectric dams are also used for providing water resource for irrigation purposes, hence for the sake of identifying the hydroelectric dams, any dam with hydroelectric involvement is stated as such in the below table, even if the primary purpose of building the dam is to retain water for irrigation.

Dam Location Purpose Length
(m)
Height
(m)
Gen. Type Ref
Bowatenna 07°40′00″N 80°40′00″E / 7.66667°N 80.66667°E / 7.66667; 80.66667 (Bowatenna Dam) Hydroelectricity 226 30 40 Gravity  
Broadlands 06°58′50″N 80°27′09″E / 6.98056°N 80.45250°E / 6.98056; 80.45250 (Broadlands Hydropower Project) Hydroelectricity 114 24 35 Gravity [1]
Canyon 06°52′18″N 80°31′34″E / 6.87167°N 80.52611°E / 6.87167; 80.52611 (Canyon Dam) Hydroelectricity     100 Arch-gravity
Castlereigh 06°52′24″N 80°33′59″E / 6.87333°N 80.56639°E / 6.87333; 80.56639 (Castlereigh Dam) Hydroelectricity     50 Gravity  
Deduru Oya 07°43′06″N 80°16′28″E / 7.71833°N 80.27444°E / 7.71833; 80.27444 (Deduru Oya Dam) Hydroelectricity 2,400 20 1.5 Embankment [2]
Dyraaba 06°53′13″N 80°57′23″E / 6.88694°N 80.95639°E / 6.88694; 80.95639 (Dyraaba Dam) Hydroelectricity 165 50 120 Gravity [3]
Gal Oya 07°12′37″N 81°32′10″E / 7.21028°N 81.53611°E / 7.21028; 81.53611 (Gal Oya Dam) Hydroelectricity 1,100 43 12 Embankment  
Inginimitiya 07°56′40″N 80°07′54″E / 7.94444°N 80.13167°E / 7.94444; 80.13167 (Inginimitiya Dam) Irrigation 4,880 18 N/A Embankment  
Kalu Ganga 07°33′35″N 80°50′09″E / 7.55972°N 80.83583°E / 7.55972; 80.83583 (Kalu Ganga Dam) Irrigation 546 67 N/A Gravity  
Kandalama 07°53′00″N 80°41′40″E / 7.88333°N 80.69444°E / 7.88333; 80.69444 (Kandalama Dam) Irrigation 1,600 21 N/A Embankment  
Kantale 08°21′40″N 80°59′29″E / 8.36111°N 80.99139°E / 8.36111; 80.99139 (Kantale Dam) Irrigation 4,200 15 N/A Embankment  
Kotmale 07°03′39″N 80°35′50″E / 7.06083°N 80.59722°E / 7.06083; 80.59722 (Kotmale Dam) Hydroelectricity 600 87 201 Gravity  
Kukule Ganga 06°34′48″N 80°19′37″E / 6.58000°N 80.32694°E / 6.58000; 80.32694 (Kukule Ganga Dam) Hydroelectricity 110 20 80 Gravity  
Laxapana 06°55′08″N 80°29′22″E / 6.91889°N 80.48944°E / 6.91889; 80.48944 (Laxapana Dam) Hydroelectricity     75 Gravity  
Lunugamwehera 06°21′11″N 81°12′09″E / 6.35306°N 81.20250°E / 6.35306; 81.20250 (Lunugamwehera Dam) Irrigation     N/A Embankment  
Maduru Oya 07°38′53″N 81°12′50″E / 7.64806°N 81.21389°E / 7.64806; 81.21389 (Maduru Oya Dam) Irrigation 1,090 41 N/A Embankment  
Maskeliya 06°50′37″N 80°32′56″E / 6.84361°N 80.54889°E / 6.84361; 80.54889 (Maskeliya Dam) Hydroelectricity     60 Gravity  
Moragahakanda 07°42′17″N 80°46′59″E / 7.70472°N 80.78306°E / 7.70472; 80.78306 (Moragahakanda Dam) Hydroelectricity   65 25 Gravity [4][5][6]
Moragolla   Hydroelectricity   35 30 Gravity [7]
Norton 06°54′50″N 80°31′18″E / 6.91389°N 80.52167°E / 6.91389; 80.52167 (Norton Dam) Hydroelectricity     50 Gravity  
Nilambe 07°11′18″N 80°37′52″E / 7.18833°N 80.63111°E / 7.18833; 80.63111 (Nilambe Dam) Hydroelectricity 70   3.2 Gravity  
Polgolla 07°19′18″N 80°38′42″E / 7.32167°N 80.64500°E / 7.32167; 80.64500 (Polgolla Barrage) Hydroelectricity 144 14.6 40 Gravity  
Puhulpola 06°54′51″N 80°56′00″E / 6.91417°N 80.93333°E / 6.91417; 80.93333 (Puhulpola Dam) Irrigation 175 45 NA Gravity [3]
Rajanganaya 08°08′30″N 80°13′23″E / 8.14167°N 80.22306°E / 8.14167; 80.22306 (Rajanganaya Dam) Irrigation     N/A Embankment  
Randenigala 07°12′00″N 80°55′30″E / 7.20000°N 80.92500°E / 7.20000; 80.92500 (Randenigala Dam) Hydroelectricity 485 94 126 Embankment  
Rambakan Oya 07°33′53″N 81°27′17″E / 7.56472°N 81.45472°E / 7.56472; 81.45472 (Rambakan Oya Dam) Irrigation 1225 24.7 N/A Embankment  
Rantembe 07°12′00″N 80°57′00″E / 7.20000°N 80.95000°E / 7.20000; 80.95000 (Rantembe Dam) Hydroelectricity 420 42 52 Gravity  
Ratkinda 07°30′30″N 81°03′24″E / 7.50833°N 81.05667°E / 7.50833; 81.05667 (Ratkinda Dam) Irrigation 4,960 25 N/A Embankment [8]
Samanala 06°40′54″N 80°47′54″E / 6.68167°N 80.79833°E / 6.68167; 80.79833 (Samanala Dam) Hydroelectricity 530 110 124 Embankment  
Udawalawe 06°26′02″N 80°51′15″E / 6.43389°N 80.85417°E / 6.43389; 80.85417 (Udawalawe Dam) Hydroelectricity 3,900   6 Embankment  
Ulhitiya 07°28′20″N 81°03′17″E / 7.47222°N 81.05472°E / 7.47222; 81.05472 (Ulhitiya Dam) Irrigation     N/A Embankment  
Upper Kotmale 06°56′48″N 80°39′29″E / 6.94667°N 80.65806°E / 6.94667; 80.65806 (Upper Kotmale Dam) Hydroelectricity 180 35 150 Gravity [9][10]
Victoria 07°14′29″N 80°47′05″E / 7.24139°N 80.78472°E / 7.24139; 80.78472 (Victoria Dam) Hydroelectricity 520 122 210 Arch [11]

See also[edit]

Map all coordinates using: OpenStreetMap 
Download coordinates as: KML · GPX

References[edit]

  1. ^ "About the Broadlands Hydropower Project". BHPCEB.lk. Archived from the original on 4 October 2013. Retrieved 2 October 2013.
  2. ^ P. Krishnaswamy (12 January 2014). "Deduru Oya Reservoir Project commissioning, a landmark event". Sunday Observer. Retrieved 4 November 2015.
  3. ^ a b Sriyananda, Shanika (27 March 2015). "Uma Oya Project: More damages than benefits?". Daily FT. Retrieved 1 July 2017.
  4. ^ Principal project features of the Moragahakanda Dam and appurtenant structures, retrieved 2010-09-22
  5. ^ Moragahakanda & Kaluganga Development Project, retrieved 2010-09-22
  6. ^ Saudi gives Rs.5,332M for Kaluganga Project, retrieved 2010-09-22
  7. ^ "Moragolla Hydropower". Ministry of Power and Renewable Energy. Retrieved 2 July 2017.
  8. ^ Ratkinda/Ulhitiya Dam Archived 2009-07-28 at the Wayback Machine
  9. ^ Upper Kotmale Dam, retrieved 2010-08-08
  10. ^ Upper Kotmale power project to be completed soon, retrieved 2010-08-08
  11. ^ Victoria Dam, retrieved 2010-08-08

External links[edit]