View source for Basava Sagara

{{Use dmy dates|date=July 2019}}
{{Infobox dam
| name = Sagara Dam
| name_official = Basava Sagara Dam
| image = 
| image_caption = 
| dam_crosses = [[Krishna River]]
| res_name = Basava Sagara/ಬಸವ ಸಾಗರ
| location = Narayanapur,           [[Hunasagi]],                   [[Yadgir District]], [[Karnataka]], [[India]]
| dam_length = {{convert|10.637|km|mi|abbr=on}}
| dam_height = {{convert|29.72|m}}
| dam_width_base = {{convert|120|ft}}
| constructi_began = 
| opening = 1982
| coordinates = {{coord|16|10|42|N|76|13|28|E|type:landmark|display=inline,title}}
| res_capacity_total = {{convert|37.965|e9cuft|km3|abbr=out}}
}}

'''Basava Sagar Dam''', previously known as '''Narayanpura Dam''', is a dam constructed across the [[Krishna River]] at  [[Yadgir district|Yadgir District, Karnataka State]], India.<ref>{{cite web | url=http://www.kbjnl.com/Comp-OM-Narayanpur-dam | title=Narayanpur Dam | publisher=Krishna Bhagya Jal Nigam Ltd. | access-date=21 June 2016}}</ref> The reservoir that it impounds is known as Basava Sagar, and has a total storage capacity of 37.965 [[tmcft]] (1.075&nbsp;km³), with 30.5 tmcft (0.85&nbsp;km³) live storage.<ref name="KBJN">{{Cite web|title=Narayanpur Dam: Salient Features of Completed Project|publisher=Krishna Bhagya Jala Nigam Limited|url=http://www.kbjnl.com/Comp-OM-Narayanpur-dam|archive-url=https://web.archive.org/web/20130208080725/http://www.kbjnl.com/Comp-OM-Narayanpur-dam|archive-date=8 February 2013|url-status=live}}</ref><ref name="Breach">{{Cite news|author=Special correspondent|date=8 October 2005|title=Breach raises questions about safety, maintenance of dam|url=http://www.hindu.com/2005/10/08/stories/2005100806900400.htm|archive-url=https://web.archive.org/web/20060218212259/http://www.hindu.com/2005/10/08/stories/2005100806900400.htm|archive-date=18 February 2006|newspaper=[[The Hindu]]|url-status=dead}}</ref> The full reservoir level is 492.25 m MSL and the minimum draw down level is 481.6 m MSL. It was a single purpose project meant only for irrigation, but downstream electrical generation and drinking water considerations enter into its management. The dam is 29 meters high and over {{convert|10.637|km}} long,<ref name="KBJN" /> and has 30 gates for water release. 22 Spillway Gates are present in the Dam<ref name="Breach" /> It took Rs. 50.48 [[Wiktionary:crore|crore]] to complete.<ref>{{Cite news|author=Bhat, Suresh|date=3 November 2006|title=A lot remains to be done for UKP|url=http://www.hindu.com/2006/11/03/stories/2006110301330500.htm|archive-url=https://web.archive.org/web/20130208071632/http://www.hindu.com/2006/11/03/stories/2006110301330500.htm|archive-date=8 February 2013|newspaper=[[The Hindu]]|url-status=dead}}</ref>

==Gates==
There are thirty spillway gates built into the dam. Each of these spillway gates are of the Ogee type. It is a common and basic design which transfers excess water from behind the dam down a smooth incline into the river below.<ref>{{cite web | url=https://www.bayt.com/en/specialties/q/150644/radial-gate-as-a-part-of-dams-what-are-the-advantages-and-disadvantages-of-it/ | title=radial-gate-as-a-part-of-dams-what-are-the-advantages-and-disadvantages-of-it | publisher="www.bayt.com" | date =3 April 2018 | access-date= 30 May 2018}}</ref> These are usually designed following an ogee curve. Most often, they are lined on the bottom and sides with concrete to protect the dam and topography. The dam falls under the Parliamentary Constituency of Vijayapura, and it is classified as being an earthen/ gravity and masonry build type.<ref>{{cite web | url=http://india-wris.nrsc.gov.in/wrpinfo/index.php?title=Narayanapura_Dam_D04315 | title=wrpinfo | publisher="india-wris.nrsc.gov.in" | date=3 April 2018 | access-date=30 May 2018 | archive-url=https://web.archive.org/web/20180323041857/http://india-wris.nrsc.gov.in/wrpinfo/index.php?title=Narayanapura_Dam_D04315 | archive-date=23 March 2018 | url-status=dead }}</ref>

When it was completed in 1982<ref name="KBJN" /> it provided water to irrigate 4.21 lakh hectares in [[Jewargi]] taluka in [[Kalaburagi district]], [[Shahapur, Karnataka|Shahapur]] and [[Shorapur]] talukas in Yadgir district, [[Sindagi]] and [[Indi, Karnataka|Indi]] talukas in [[Bijapur district, Karnataka|Bijapur district]], and [[Lingsugur]] and [[Devadurga, India|Devadurga]] talukas in [[Raichur district]].<ref name="Fifth-gate">{{Cite news|author=Staff|date=7 October 2005|title=Fifth gate of Narayanpur Dam cracks open, water spews out|url=http://www.hindu.com/2005/10/07/stories/2005100710090400.htm|archive-url=https://web.archive.org/web/20060307155603/http://www.hindu.com/2005/10/07/stories/2005100710090400.htm|archive-date=7 March 2006|newspaper=[[The Hindu]]|url-status=dead}}</ref>

== Future potential==
Nearly 2000 MW capacity [[pumped hydroelectric energy storage]] (PHES) plant can be installed using the Basava Sagara reservoir as its upper reservoir. In the downstream of the dam, lower reservoir with 5 [[tmcft]] storage capacity  can be located to utilize nearly 60 meters water head. PHES plant is a low cost method to store the excess power generated by the solar and wind power plants during the day time and make available for use during the night hours. Also substantial secondary hydro power can be generated using the flood water flows at no extra cost during the monsoon season. Also the downstream dam with 5 tmcft storage can have 200 MW hydro power capacity to generate secondary power from floodwaters during the monsoon season.

==Incidents==
In 1992, two of the irrigation gates partially failed.<ref name="Breach" /> In 2005, there was a collapse of one of the gates in the dam and up to a lakh cusecs of water was being released before emergency actions were effective.<ref>{{cite web | url=http://pib.nic.in/newsite/mbErel.aspx?relid=168661 | title=newsite | publisher="pib.nic.in" | date =3 April 2018 | access-date= 30 May 2018}}</ref>
The gate broke open on the morning of 6 October and most of the water flow was stopped by the afternoon of the 9th. Basava Sagar reservoir dropped several metres as a result.<ref name="Fifth-gate" /><ref>{{Cite news|author=Staff|date=10 October 2005|title=Outflow from Narayanpur Dam arrested|url=http://www.hindu.com/2005/10/10/stories/2005101018200100.htm|archive-url=https://web.archive.org/web/20060220035709/http://www.hindu.com/2005/10/10/stories/2005101018200100.htm|archive-date=20 February 2006|newspaper=[[The Hindu]]|url-status=dead}}</ref>

In April 2011, farmers fearing loss of their crops staged a protest at Narayanpur dam, and forced the staff to release water after officials had shut down releases due to low rainfall and inflows.<ref>{{Cite news|author=Staff|date=19 April 2011|title=Farmers forcibly release water from Narayanpur dam|url=http://www.hindu.com/2011/04/19/stories/2011041957110500.htm|archive-url=https://web.archive.org/web/20110616021147/http://www.hindu.com/2011/04/19/stories/2011041957110500.htm|archive-date=16 June 2011|newspaper=[[The Hindu]]|url-status=dead}}</ref> This type of protests in earlier years, such as the one in April 2005 where large numbers of police prevented the farmer's from releasing the water.<ref>{{Cite news|author=Special correspondent|date=14 April 2005|title=Tension in Narayanpur|url=http://www.hindu.com/2005/04/14/stories/2005041411100300.htm|archive-url=https://web.archive.org/web/20050420013254/http://www.hindu.com/2005/04/14/stories/2005041411100300.htm|archive-date=20 April 2005|newspaper=[[The Hindu]]|url-status=dead}}</ref> As of August 2013, the project has an estimated capacity of 31.47 TMC.

==See also==
* [[Almatti Dam]]
* [[Upper Krishna Project]]
* [[Rajolibanda Diversion Scheme]]

==References==
{{Reflist}}

==External links==
* Photos: {{Cite web|title=Narayanpur Dam|publisher=Mysore Construction Company|url=http://www.myconltd.com/Irrigation%20Home.htm|archive-url=https://web.archive.org/web/20120609050957/http://www.myconltd.com/Irrigation%20Home.htm|archive-date=9 June 2012|url-status=live}}
{{-}}{{Yadgir district}}{{Hydrology of Karnataka|state=expanded}}
{{Krishna basin |state=expanded}}
{{Krishna River dams}}

[[Category:Dams in Karnataka]]
[[Category:Dams on the Krishna River]]
[[Category:Buildings and structures in Yadgir district]]
[[Category:1982 establishments in Karnataka]]
[[Category:Dams completed in 1982]]


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