# Kopili Hydro Electric Project > Mediated Wiki article. Canonical URL: https://mediated.wiki/source/Kopili_Hydro_Electric_Project > Markdown URL: https://mediated.wiki/source/Kopili_Hydro_Electric_Project.md > Source: https://en.wikipedia.org/wiki/Kopili_Hydro_Electric_Project > Source revision: 1326444750 > License: Creative Commons Attribution-ShareAlike 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/) Hydroelectric power project in Assam, India Dam in Assam, India Khandong Dam The Khandong dam Interactive map of Khandong Dam Official name Kopili Hydro Electric Project Location Assam, India Coordinates 25°31′43″N 92°37′58″E / 25.5286173°N 92.6327813°E / 25.5286173; 92.6327813 Purpose Power Opening date 1984; 42 years ago (1984) Owner Government of India Dam and spillways Type of dam Concrete Gravity Impounds Kopili River Height 66 metres (217 ft) Length 243 metres (797 ft) Spillway capacity 15417 m³/s Reservoir Creates Kopili Reservoir Total capacity 166800 Surface area 13.36 square kilometres (5.16 mi2) Khandong Power House Coordinates 25°31′01″N 92°39′58″E / 25.5168635°N 92.6660943°E / 25.5168635; 92.6660943 Operator NEEPCO Commission date 8 March 1984 Turbines 3×25 MW Installed capacity 75 MW Annual generation 363.9 MU Website NEEPCO Dam Umrong Dam View of Umrong Reservoir from Umrangso Interactive map of Umrong Dam Official name Kopili Hydro Electric Project Coordinates 25°31′43″N 92°42′45″E / 25.5284962°N 92.7126092°E / 25.5284962; 92.7126092 Purpose Power Opening date 1988; 38 years ago (1988) Dam and spillways Type of dam Concrete Gravity Impounds Umrang river Height 30 metres (98 ft) Length 143 metres (469 ft) Spillway type Ogee Radial Spillway capacity 554.7 m³/s Reservoir Creates Umrong Reservoir Total capacity 175000 Surface area 16 square kilometres (6.2 mi2) Kopili Power House Coordinates 25°35′10″N 92°43′23″E / 25.586020°N 92.723019°E / 25.586020; 92.723019 Operator NEEPCO Commission date 4 July 1988; 37 years ago (4 July 1988) Turbines 4×50 MW Installed capacity 200 MW **Kopili Hydro Electric Project** is a 275 megawatts (369,000 hp), [hydroelectric](/source/Hydroelectric) power project on the [Kopili river](/source/Kopili_River) and its [tributary](/source/Tributary), Umrong stream. It is located in [Dima Hasao district](/source/Dima_Hasao_district) of [Assam](/source/Assam) state in [India](/source/India).[1] The project is developed and operated by [North Eastern Electric Power Corporation Limited](/source/North_Eastern_Electric_Power_Corporation_Limited). It is an important project since the [Indian state](/source/States_and_union_territories_of_India) of Assam, [Arunachal Pradesh](/source/Arunachal_Pradesh), [Manipur](/source/Manipur), [Meghalaya](/source/Meghalaya), [Mizoram](/source/Mizoram), [Nagaland](/source/Nagaland) and [Tripura](/source/Tripura) benefit from this project.[*[citation needed](https://en.wikipedia.org/wiki/Wikipedia:Citation_needed)*] ## Overview The Khandong dam impounds Kopili river and Umrong dam impounds Umrong river creating Kopili reservoir and Umrong reservoir. Kopili reservoir partially falls in Meghalaya state as Kopili river forms geographical boundary between Assam and Meghalaya in this region. Water from Kopili reservoir is fed to Khandong power station, releasing water into Umrong reservoir. Water from Umrong reservoir is diverted via tunnels to Kopili power station on the bank of Kopili river. Tail race waters of Kopili power house are released back into the Kopili river.[1] Although this project is not classified as such, its design is very similar to [run-of-the-river](/source/Run-of-the-river) power projects. ## Power plants ### Khandong I & II The Khandong power house stage-I and stage-II are located between two reservoirs, near Umrong reservoir, in geographical location [25°31′00″N 92°39′58″E / 25.5168°N 92.6660°E / 25.5168; 92.6660](https://geohack.toolforge.org/geohack.php?pagename=Kopili_Hydro_Electric_Project¶ms=25.5168_N_92.6660_E_) and Khandong dam is located at [25°31′43″N 92°37′58″E / 25.5286°N 92.6327°E / 25.5286; 92.6327](https://geohack.toolforge.org/geohack.php?pagename=Kopili_Hydro_Electric_Project¶ms=25.5286_N_92.6327_E_). Khandong Stage-I powerhouse has 2x25 MW Francis type turbines, generating 50 MW power at peak. It is connected to Kopili reservoir via a 4.5 metres (15 ft) diameter, 2,852 metres (9,357 ft) long concrete-lined head race tunnel. First and second units of stage-I were commissioned on 8 March and 3 May 1984 respectively. Khandong stage II powerhouse is located close to stage-I power station. It has 1x25 MW turbine, connected via a 480 metres (1,570 ft) long water conductor system, which was provisioned for at the time of stage-I construction. Third turbine was commissioned on 26 July 2004.[1][2] ### Kopili I & II The Kopili power house stage-I and stage-II are located on the right bank of Kopili river in geographical location [25°35′10″N 92°43′23″E / 25.586°N 92.723°E / 25.586; 92.723](https://geohack.toolforge.org/geohack.php?pagename=Kopili_Hydro_Electric_Project¶ms=25.586_N_92.723_E_). The related Umrong dam, completed in 1988, is located at [25°31′42″N 92°42′45″E / 25.5284°N 92.7126°E / 25.5284; 92.7126](https://geohack.toolforge.org/geohack.php?pagename=Kopili_Hydro_Electric_Project¶ms=25.5284_N_92.7126_E_). Khandong Stage-I and II powerhouse is installed with 4x50 MW Francis type turbines, generating 200 MW power at peak. It is connected to Umrong reservoir via a 4.6 metres (15 ft) diameter, 5.5 kilometres (3.4 mi) long concrete-lined head race tunnel. The first unit of stage-I was commissioned on 4 July 1988.[2] ### Lower Kopili HEP Because of contamination of Kopili river waters, the prospect of Lower Kopili Hydro Electric Project downstream of Kopili powerhouse has met with hurdles for environmental clearances and financial funding of the project. The 120 MW power project will be funded by the Asian Development Bank.[3][4] ## Environment issue This hydroelectric project has suffered some serious damage due to contamination of Kopili river with [acid mine discharge](/source/Acid_mine_drainage) from open cast coal mines and [rat hole mining](/source/Rat-Hole_Mining) in Meghalaya.[5][6][7] ## Incidents ### 2019 The Hydro project site was submerged and flooded following a pipeline burst on 7 October 2019. 4 people has since been reported missing in the overflowing project site. The burst happened on an old pipe, which was repaired the previous year.[8][9] ### 2022 Incident at Khandong Power Plant claimed lives of three persons.[10] ## Map 4km 2.5miles Umrong Reservoir Kopili Reservoir Kopili P.H. Umrong Dam Khandong P.H. Khandong Dam Kopili Hydro Electric Project ## See also - [List of dams and reservoirs in Assam](/source/List_of_dams_and_reservoirs_in_Assam) ## References 1. ^ [***a***](#cite_ref-:0_1-0) [***b***](#cite_ref-:0_1-1) [***c***](#cite_ref-:0_1-2) ["Kopili Hydro Electric Project"](https://web.archive.org/web/20190220041715/http://india-wris.nrsc.gov.in/wrpinfo/index.php?title=Kopili_Hydroelectric_Project_JH00099). *Water Resources Information System of India*. Archived from [the original](http://india-wris.nrsc.gov.in/wrpinfo/index.php?title=Kopili_Hydroelectric_Project_JH00099) on 20 February 2019. Retrieved 21 February 2019. 1. ^ [***a***](#cite_ref-:2_2-0) [***b***](#cite_ref-:2_2-1) ["National Register of Large Dams (NRLD) - India"](https://web.archive.org/web/20190220072735/http://www.indiaenvironmentportal.org.in/files/file/NRLD%202018.pdf) (PDF). Archived from [the original](http://www.indiaenvironmentportal.org.in/files/file/NRLD%202018.pdf) (PDF) on 20 February 2019. Retrieved 21 February 2019. 1. **[^](#cite_ref-3)** ["Lower Kopili clearance on hold"](https://www.telegraphindia.com/north-east/lower-kopili-clearance-on-hold/cid/1437966). *[The Telegraph](/source/The_Telegraph_(Calcutta)) India*. 31 August 2017. Retrieved 21 February 2019. 1. **[^](#cite_ref-4)** ["Environmental Assessment for Lower Kopili Hydropower Project"](https://www.adb.org/sites/default/files/project-documents/47101/47101-004-eia-en_3.pdf) (PDF). *[Asian Development Bank](/source/Asian_Development_Bank)*. April 2018. Retrieved 21 February 2019. 1. **[^](#cite_ref-5)** ["Two Kopili power units shut down - Mining in Jaintia Hills affects machines"](https://www.telegraphindia.com/north-east/two-kopili-power-units-shut-down-mining-in-jaintia-hills-affects-machines/cid/291312). *[The Telegraph](/source/The_Telegraph_(Calcutta)) India*. 20 June 2013. Retrieved 21 February 2019. 1. **[^](#cite_ref-6)** ["Renovation & Modernisation of Kopili Hydro Electric Plant"](https://web.archive.org/web/20190221165641/http://www.cea.nic.in/reports/others/hydro/herm/technical3/ts34.pdf) (PDF). Archived from [the original](http://www.cea.nic.in/reports/others/hydro/herm/technical3/ts34.pdf) (PDF) on 21 February 2019. Retrieved 21 February 2019. 1. **[^](#cite_ref-7)** ["Concern over contamination of Kopili water"](https://web.archive.org/web/20131224095243/http://www.assamtribune.com/scripts/detailsnew.asp?id=jun2012/state06). *[The Assam Tribune](/source/The_Assam_Tribune) online*. 20 June 2012. Archived from [the original](http://www.assamtribune.com/scripts/detailsnew.asp?id=jun2012/state06) on 24 December 2013. Retrieved 21 February 2019. 1. **[^](#cite_ref-8)** Karmakar, Rahul (9 October 2019). ["Assam dam disaster: Ruptured pipeline was repaired a year ago - The Hindu"](https://www.thehindu.com/news/national/assam-dam-disaster-ruptured-pipeline-was-repaired-a-year-ago/article29629623.ece). *The Hindu*. 1. **[^](#cite_ref-9)** ["Four days on, hope fades for families of those trapped in Assam's Kopili hydel project"](https://www.hindustantimes.com/india-news/four-days-on-hope-fades-for-families-of-those-trapped-in-assam-s-kopili-hydel-project/story-bQNQWAuewpMdVWTUqoWTiP.html). 10 October 2019. 1. **[^](#cite_ref-10)** ["Assam: Explosion at Kopili Hydel Project Claims Lives of 3 NEEPCO Employee - Sentinelassam"](https://www.sentinelassam.com/north-east-india-news/assam-news/assam-explosion-at-kopili-hydel-project-claims-lives-of-3-neepco-employee-584609). 26 March 2022. ## External links - [North Eastern Electric Power Corporation Limited - Kopili Hydro Electric Project](https://neepco.co.in/projects/hydro-projects/kopili-hydro-electric-plant) v t e NTPC power stations Thermal Coal (own) Barauni Barh Bongaigaon Dadri Darlipali Farakka Gadarwara Kahalgaon Khargone Korba Kudgi Lara Mauda North Karanpura Ramagundam Rihand Simhadri Singrauli Sipat Solapur Talcher Talcher Kaniha Tanda Telangana Unchahar Vindhyachal Coal (JVs) Indira Gandhi Super Thermal Power Project Nabinagar Thermal Power Project Kanti Thermal Power Station Meja Nabinagar Super Thermal Power Project Patratu Super Thermal Power Project NSPCL Vallur Thermal Power Project Meja Thermal Power Station Patratu Super Thermal Power Project Gas (own) Anta Auraiya Dadri Faridabad Jhanor-Gandhar Kawas Kayamkulam Gas (JVs) Agartala Assam RGPPL Tripura Hydel Own Koldam Lata Tapovan Rammam Tapovan Vishnugad JVs Doyang Kameng Kopili Koteshwar Pare Ranganadi Tehri Tuirial v t e Hydrography of Northeast India Rivers Bhogdoi Siang/Dihang/Brahmaputra Dhansiri Dihing Diphlu Feni Gumti Haora Iril Kaladan Kameng or Jia Bhoreli Karnaphuli Khowai Kolong Kopili Lohit Manas/ Drangme Chhu Manu Mora Dhansiri Muhuri Myntdu Mora Diphlu Sankosh or Puna Tsang Chhu Simsang or Someshwari Surma Surma-Meghna River System Thega River Tirap Ranganadi River Tuni River Tipkai River Krishnai River Dudhnoi River Jhanji River Bharalu River Nona River Borgang River Dikrong River Jiadhal River Champabati River Aie River Jiri River Kulsi River Gabharu River Jatinga River Dikhow River Pagladiya River Baralia River Diju River Lakes Kamalasagar Loktak Umiam Lake Ward's Lake Waterfalls Bishop Kynrem Langshiang Nohkalikai Nohsngithiang Vantawng Major bridges Bhupen Hazarika Setu Bogibeel Bridge Dibang River Bridge Kolia Bhomora Setu Naranarayan Setu Saraighat Bridge New Saraighat Bridge New Kolia Bhomora Bridge Kumar Bhaskar Varma Setu Power projects Jorethang HEP Kopili HEP Rangit HEP Fluvial islands Majuli --- Adapted from the Wikipedia article [Kopili Hydro Electric Project](https://en.wikipedia.org/wiki/Kopili_Hydro_Electric_Project) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Kopili_Hydro_Electric_Project?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.