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[[File:Kopili River.jpg|right|thumb|250px|Kopili River at [[Nagaon]]]]
'''Kopili River''' is an interstate river in [[Northeast India]] that flows through the states of [[Meghalaya]] and [[Assam]] and is the largest south bank tributary of the [[Brahmaputra]] in Assam.<ref name="Mahanta2012">{{cite journal|last=Mahanta|first=Kashyap|title=Structural Formation & Seismicity of Kopili Fault Region in North- East India and Estimation of Its Crustal Velocity|journal=International Journal of Modern Engineering Research|date=November–December 2012|volume=2|issue=6|pages=4699–4700}}</ref>

== Course ==
The Kopili originates in the [[Karbi-Meghalaya Plateau|Meghalaya plateau]] and flows through Central Assam and the hill districts of Assam before its confluence with the Brahmaputra. In Assam it drains the districts of [[Karbi Anglong district|Karbi Anglong]], [[Dima Hasao district|Dima Hasao]], [[Kamrup district|Kamrup]] and [[Nagaon district|Nagaon]].<ref name="thesciprobe">{{cite journal|last=Das|first=Bubul|title=A Comparison of Fish Diversity of Kopili and Jamuna Rivers of Karbi Anglong District, Assam|journal=The Science Probe|date=May 2012|volume=1|series=1|pages=22–23|url=http://thesciprobe.com/files/documents/5.-A-Comparison-of-Fish-Diversity-of-Kopili-and-Jamuna-Rivers%E2%80%A6.pdf|accessdate=18 September 2013}}</ref> The river flows for a total length of {{convert|290|km|mi}} and has a [[Catchment area (hydrology)|catchment area]] of {{convert|16420|km2|mi2}}. It is noted for several spectacular waterfalls along its course which has several deep [[gorge]]s and [[rapids]] in the {{convert|120|km|mi}} of its flow before [[debouch]]ing into the plains at Nagaon district.<ref name="Mahanta2012" /><ref>{{cite web|title=Jaintia Hills|url=http://www.britannica.com/EBchecked/topic/1512519/Kopili-River|publisher=Encyclopædia Britannica|accessdate=18 September 2013}}</ref>

== Waterworks ==
Completed in 1975, the Kopili Flow Irrigation Scheme in Kamrup district irrigates {{convert|1300|ha|acre}} of land across 14 revenue villages and facilitates paddy cultivation.<ref>{{cite web|title=GUWAHATI WEST DIVISION (IRRIGATION), ULUBARI, GUWAHATI-8|url=http://kamrup.nic.in/irri.htm|accessdate=18 September 2013}}</ref> The Kopili Hydro Electric Project, located across the districts of [[Dima Hasao district|Dima Hasao]] in Assam and [[Jaintia Hills district|Jaintia Hills]] in Meghalaya and run by the [[North Eastern Electric Power Corporation Limited|North Eastern Electric Power Corporation]], consists of the Khandong and Umrongso dams and their reservoirs and three power houses that have a total installed capacity of 275 MW.{{citation needed|date=November 2019}}

== Environmental issues ==
The Kopili has as many as 54 species of fish in it.<ref name="thesciprobe" /> Unscientific [[opencast coal mining]] in the Kopili's upper reaches in Meghalaya has led to [[Freshwater acidification|acidification]] of the river which has in turn left part of the river's course [[biologically dead]], making the water unfit for human consumption and has led to frequent outages at the [[Kopili Hydro Electric Project]]'s power stations.<ref>{{cite news|title=Two Kopili power units shut down - Mining in Jaintia Hills affects machines|url=http://www.telegraphindia.com/1130620/jsp/northeast/story_17025213.jsp#.UjnhKdLQkYo|accessdate=18 September 2013|newspaper=The Telegraph|date=20 June 2013}}</ref><ref>{{cite news|title='Black gold' kills rivers, stains state poll canvas|url=http://www.hindustantimes.com/News-Feed/NEPolls/Black-gold-kills-rivers-stains-state-poll-canvas/Article1-1015376.aspx|archive-url=https://web.archive.org/web/20130224223014/http://www.hindustantimes.com/News-Feed/NEPolls/Black-gold-kills-rivers-stains-state-poll-canvas/Article1-1015376.aspx|url-status=dead|archive-date=24 February 2013|accessdate=18 September 2013|newspaper=The Hindustan Times|date=21 February 2013}}</ref><ref>{{cite news|title=Concern over contamination of Kopili water|url=http://www.assamtribune.com/scripts/detailsnew.asp?id=jun2012/state06|accessdate=18 September 2013|newspaper=The Assam Tribune|date=20 June 2012}}</ref>

== References ==
{{Reflist}}

{{Coord|26|10|N|92|15|E|display=title|region:IN_type:river_source:GNS-enwiki}}
{{Use dmy dates|date=March 2017}}

{{Hydrography of North-east India}}
{{Authority control}}

[[Category:Rivers of Meghalaya]]
[[Category:Rivers of Assam]]
[[Category:Tributaries of the Brahmaputra River]]
[[Category:Karbi Anglong district]]
[[Category:Rivers of India]]

Kopili River - Revision history

->GreenC bot at 01:56, 9 August 2021