Shayne2017: small changes

2026-03-08T11:00:43Z

small changes

CleanupBot II: Removed empty portal template using script

2023-08-14T00:46:43Z

Removed empty portal template using script

← Older revision		Revision as of 06:16, 14 August 2023
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	==See also==		==See also==
	{{stack\|~~{{Portal\|India\|Water\|Renewable energy}}~~}}		{{stack\|}}

	* [[2018 Kerala floods]]		* [[2018 Kerala floods]]

117.217.234.5 at 04:34, 19 June 2021

2021-06-19T04:34:11Z

New page

{{Use Indian English|date=September 2013}}
{{Use dmy dates|date=December 2020}}
{{Infobox dam
| name = Idukki dam
| name_official =
| image = File:Idukki009.jpg
| image_caption =
| image_alt =
| image_size =
| location_map = India Kerala#India
| location_map_size =
| location_map_caption =
| coordinates = {{coord|9|50|34|N|76|58|34|E|type:landmark|display=inline,title}}
| country =
| location = [[Idukki]] taluk , [[Kerala]], [[India]]
| purpose = Power generation
| status = O
| construction_began = 30 April 1968
| opening = February 1973
| demolished =
| cost =
| owner = [[Kerala State Electricity Board]]
| dam_type = Concrete, double curvature parabolic, thin arch.
| dam_crosses = [[Periyar River]]
| dam_height_foundation =
| dam_height_thalweg =
| dam_length = {{Convert|365.85|m|ft|0|abbr=on}}
| dam_elevation_crest =
| dam_width_crest =
| dam_width_base =
| dam_volume = {{convert|450000|m3|abbr=on}}
| spillway_count = Nil
| spillway_type =
| spillway_capacity =
| res_name =
| res_capacity_total = 5.55 km³
| res_capacity_active = {{Convert|1460|e6m3|acre.ft|0|abbr=on}}
| res_capacity_inactive = {{Convert|536|e6m3|acre.ft|0|abbr=on}}
| res_catchment = {{Convert|649.3|km2|mi2|0|abbr=on}}
| res_surface = {{Convert|60|km2|mi2|0|abbr=on}}
| res_max_length =
| res_max_width =
| res_max_depth =
| res_elevation = {{Convert|732.62|m|ft|0|abbr=on}}
| res_tidal_range =
| plant_operator =
| plant_commission = 1975
| plant_decommission =
| plant_type =
| plant_turbines = 6 x 130 [[megawatt|MW]] [[Pelton-type]]
| plant_capacity = 780 MW
| plant_annual_gen =
| website =
| extra =
| dam_height = {{Convert|168.91|m|ft|0|abbr=on}}
}}

The '''Idukki Dam''' is a double curvature [[Arch dam]] constructed across the [[Periyar River]] in a narrow gorge between two granite hills locally known as ''[[Kuravanmala|Kuravan]]'' and ''Kurathi'' in [[Kerala]], [[India]]. At {{convert|168.91|m|ft}},<ref name="damfacts">{{cite web |title=Idukki Arch Dam |url=https://idukki.gov.in/tourist-place/idukki-arch-dam/ |website=GOVERNMENT OF KERALA |access-date=20 August 2018}}</ref> it is one of the highest [[arch dam]]s in [[Asia]]. It is constructed and owned by the [[Kerala State Electricity Board]]. It supports a 780 MW [[hydroelectric]] power station in [[Moolamattom]], which started generating power on 4 October 1975.<ref name="idukki">{{cite web
| url = http://idukki.nic.in/dam-hist.htm
| title = Idukki District Hydroelectric projects
| access-date = 2007-03-12
}}</ref> The dam type is a concrete, double curvature [[parabolic arch|parabolic]], thin arc dam.<ref>{{cite web
| url = http://expert-eyes.org/deepak/idukki.html
| title = Salient Features – Dam
| access-date = 2007-03-12
}}</ref>

This dam was constructed along with two other dams at [[Cheruthoni dam|Cheruthoni]] and Kulamavu. Together, the three dams have created an artificial lake that is {{cvt|60|km2|0}} in area. The stored water is used to produce electricity at the Moolamattom Power house, which is located inside nearby rocky caves. The [[Government of Canada]] aided in the building of the dam with long-term loans and grants.<ref name="idukki"/>
[[File:Idukki Dam Reservoir.jpg|thumb|Idukki Dam Reservoir]]

==History==
===Early surveys===
The idea of constructing a dam for power generation was first conceived in 1919 in a report submitted by Italian engineer Jacob to the Travancore government, which was rejected. As per history, Shri Chemban Karuvellayan Kolumban,<ref>https://www.thehindu.com/news/national/kerala/man-who-changed-the-course-of-a-river/article6721679.ece</ref> the head of 'Oorali' race during 1922, showed the way to the Malankara Estate Superintendent W.J.John and his friend AC Thomas Edattu, who were on hunting trip to forests near the present Arch Dam. Upon hearing the legend of Kuravan and Kurathi Hills, Thomas impressed by the sight of water flow between the mountains; suggested the spot suitable for an [[Arch dam]]. In 1932, W.J.John submitted a report to the Government of Travancore on the possibility of constructing a dam at Idukki for Power Generation.<ref>[http://idukki.nic.in/dam-hist.htm Idukki]</ref>

In 1935, assembly member Shri.K.A.Narayana Pillai brought the Idukki project to the attention of Government of [[Travancore]]. Italian engineers Angelo Omedayo and Clantheyo Masele conducted a study in 1937 but things didn't go forward.

In 1947, a preliminary investigation report was prepared and submitted by Sri. P. Joseph John, the then Chief Electrical Engineer to the Government of [[Travancore]]. It was during 1956 that the Central Water Commission conducted a detailed investigation based on the Government's request. The project report was prepared in 1961 and the [[Planning Commission (India)|Planning Commission]] accorded sanction for implementing the scheme in 1963. In 1964, under the leadership of Sri. E.U.Philipose, Superintending Engineer, preliminary works of the project were started.

===Construction===
[[File:IdukkiDamConcaveSide.jpg|thumb|]]
The construction of this Dam commenced on 30 April 1969. The project lead by [[D. Babu Paul|Dr.D.Babu Paul IAS]], who appointed as Project Coordinator, Idukki Hydel Project & District Collector with several engineers like Sri. C.V Mathews(Retired Chief Engineer, Electricity Board) . The [[Government of Canada]] aided the Project with long-term loans and grants. [[SNC-Lavalin]], Canada, a well-known firm of Consulting Engineers were advising and assisting Project Engineers under Canadian aid, while [[Hindustan Construction Company]] (a.k.a. HCC) of [[Walchand group]] won the bid for construction.<ref>https://english.mathrubhumi.com/news/offbeat/idukki-dam-completes-42-years-today-power-1.2597167</ref><ref>https://www.thenewsminute.com/article/building-idukki-dam-workers-hired-project-recall-struggle-85857</ref>

Storage of water in Idukki reservoir commenced in February, 1973. The inauguration of trial run of the first machine was celebrated on 4 October 1975. Commercial operation of the Power Station was Commissioned on 12 February 1976 by the then Hon. Prime Minister Smt. [[Indira Gandhi]].

==Features==
Idukki Dam is {{cvt|168.91|m}} tall, constructed between the two mountains - [[Kuravanmala]] ({{cvt|839|m}}) and [[Kuravathimala]] ({{cvt|925|m}}). Length of the dam on its top is {{cvt|365.85|m}}. It has a width of {{cvt|7.62|m}} in the top and {{cvt|19.81|m}} in the bottom. About {{cvt|4,64,000|m3}} of concrete was used in the construction of the dam. This project is situated in [[Idukki]] District and its underground power house is located at [[Moolamattom]] which is about {{cvt|43|km}} from the dam. One thing to be noted is, Idukki Arch dam doesn't have any shutters to be opened so it has to rely on the [[Cheruthoni dam]] to maintain the reservoir water level.

[[File:Idukki013.jpg|thumb|]]

==Usage==

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'''Power Generation'''

The Project harnesses a major portion of the power potential of [[Periyar (river)|Periyar]], the largest river in [[Kerala]], by the creation of a reservoir of 2,000 M.cum (2 Billion Tonnes) capacity, diversion of waters thus impounded through a water conductor system consisting of a power tunnel and two underground pressure shafts to an underground power house situated in [[Moolamattom]]. The installed capacity of the Power House is 780 MW consisting of 6 Units of [[Pelton-type]] turbines with a power generation capacity of 130 MW each. The regulated waters of Periyar falls through a drop of about {{cvt|669.2|m}} while generating power in the underground power house. The generated power is given to two sub stations. One double circuit line to Kalamassery; one single circuit line to Tamil Nadu; One single circuit line to Pallom, 3 feeder bays for future.

'''Irrigation'''

The tail waters flowing to Kudayathurpuzha through tunnel and open channel is diverted for irrigation purposes in the [[Muvattupuzha]] Valley.

'''Tourist destination and attraction'''

Earlier, there was a blanket ban on public entry in to the dam due to security reasons. Later, it was relaxed opening the dam for public for 10 days during the Onam and the Christmas seasons. The duration has been increased to one month since last year. Cameras and cell phones are not allowed inside the dam area. The entry fee is Rs. 25 for adults and Rs. 5 for children. The fee for 15-minute boating service for five persons is Rs. 600.<ref>{{cite news|title=Filled to its brim, Idukki dam woos tourists|url=http://www.thehindu.com/news/national/kerala/filled-to-its-brim-idukki-dam-woos-tourists/article5147668.ece|access-date=21 September 2013|newspaper=The Hindu}}</ref>

Idukki valley is {{cvt|121|km}} away from [[Kottayam]], and is a small hill town surrounded by a spread of beautiful, wooded valleys and meandering streams. Idukki is a well known tourist center in Kerala.

The Idukki Wildlife Sanctuary extends over the [[Thodupuzha]] and [[Udumbanchola]] taluks of [[Idukki district]], spread over {{cvt|77|km}} and is about {{cvt|450-748|m}} above sea level. The Idukki Reservoir formed by three dams - [[Cheruthoni]], Idukki and Kulamavu - extends to {{cvt|33|km}}. One can find elephants, bisons, sambar deer, wild dogs, jungle cats, tigers, wild boars etc. and a variety of snakes like cobra, viper, krait and a number of non-venomous snakes in this sanctuary. The birds of Idukki are Jungle fowl, myna, laughing thrush, black bulbul, peafowl, woodpecker, kingfisher, eagle etc.

==See also==
{{stack|{{Portal|India|Water|Renewable energy}}}}

* [[2018 Kerala floods]]
*[[List of dams and reservoirs in Kerala]]
* [[Kulamavu Dam]]
* [[Cheruthoni Dam]]

==References==
{{reflist}}[https://www.kvidukki.Gov.in www.kvidukki.Gov.in]

==External links==
{{Commons category|Idukki Dam}}
* {{Structurae|id=20004966|title=Idukki Dam}}
*[http://www.hinduonnet.com/2004/02/07/stories/2004020709440500.htm Idukki dam safe: Kadavoor]
*[http://expert-eyes.org/deepak/idukki.html Idukki Hydroelectric Project]
*[http://www.timescontent.com/tss/showcase/preview-buy/129514/Feature/Idukki-Project-Hydro-Electricity-Pr.html Old Photos]
* https://idukki.gov.in/tourist-place/idukki-arch-dam/
*Interesting Facts about [https://www.myidukki.com/idukki-dam/ Idukki dam]
*[http://Kendriya%20Vidyalaya,%20Idukki,Hill%20Station Kendriya Vidyalaya, Idukki,Hill Station]

{{Power Plants of Kerala}}
{{Tourism in Kerala}}
{{Dams in Kerala}}

[[Category:Arch dams]]
[[Category:Hydroelectric power stations in Kerala]]
[[Category:Dams completed in 1973]]
[[Category:1973 establishments in Kerala]]
[[Category:Dams in Idukki district]]

Idukki Dam - Revision history

Shayne2017: small changes

CleanupBot II: Removed empty portal template using script

117.217.234.5 at 04:34, 19 June 2021