https://indianpedia.org/index.php?action=history&feed=atom&title=Erattayar_DamErattayar Dam - Revision history2026-07-31T07:37:32ZRevision history for this page on the wikiMediaWiki 1.45.4https://indianpedia.org/index.php?title=Erattayar_Dam&diff=201763&oldid=prev>The Anomebot2 at 12:58, 9 August 20212021-08-09T12:58:03Z<p></p>
<p><b>New page</b></p><div>[[File:Erattayar.jpg|thumb|250px|right|Erattayar Dam]]<br />
{{Short description|A diversion dam in Kerala, India}}<br />
'''Erattayar Dam''' (Malayalam: ഇരട്ടയാർ അണക്കെട്ട്) is a small diversion dam built on the [[Erattayar river]] in Erattayar Grama Panchayat near [[Kattappana]] town in [[Idukki district]] of [[Kerala]], [[India]].<ref>{{Cite web|title=Kerala State Electricity Board Limited - Kerala State Electricity Board Limited|url=https://www.kseb.in/index.php?option=com_jdownloads&view=download&id=13196:emergency-action-plan-tier-i-erattayar&lang=en|access-date=2021-07-28|website=www.kseb.in}}</ref> It acts mainly as a diversion dam to supply water to the Idukki Dam. Diversion of water from Erattayar forebay to Idukki reservoir is through a tunnel called [[Anchuruli tunnel]]<ref>{{Citation|title=Erattayar Dam, starting place of Anchuruli Tunnel {{!}} അഞ്ചുരുളി ടണലിന്റെ ആരംഭം തേടി ഇരട്ടയാറ്റിലേക്|url=https://www.youtube.com/watch?v=ZAKKksnlO7g|language=en|access-date=2021-07-25}}</ref> which is 3771.9m long.<ref>{{Cite web|title=ERATTAYAR DAM – KSEB Limted Dam Safety Organisation|url=https://dams.kseb.in/?p=569|access-date=2021-07-07|language=en-US}}{{CC-notice|cc=bysa2.5}}</ref> Construction of the dam was completed in the year 1989.<br />
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It is a small dam measuring only 46.3 m in length and 19.81 m in height. Idukki HE Project- Stage III- Kallar-Erattayar diversion scheme envisages creation of two forebays by means of diversion dams, one in river Kallar of storage capacity 28 Mcft.( 0.793 MCM) and another in river Erattayar of storage capacity 189 Mcft (5.352 MCM) in the upper reaches of river Perinjamkutty a tributary of Periyar. Water from Kallar is diverted to Erattayar through a tunnel 2735.58 m long.<ref>https://nwa.mah.nic.in/sdmc/assets/dams/Dams%20in%20Kerala.xlsx</ref> Taluk through which release flows are [[Thodupuzha]], [[Udumbanchola (State Assembly constituency)|Udumpanchola]], [[Devikulam taluk|Devikulam]], [[Kothamangalam]], [[Muvattupuzha Taluk|Muvattupuzha]], [[Kunnathunad]]u, [[Aluva]], [[Kodungallur|Kodungalloor]] and [[Paravur Taluk|Paravur]].<br />
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==Details of the dam==<br />
[[File:Anchuruli.jpg|thumb|250px|right| [[Anchuruli]] tunnel that diverts water from Erattayar Reservoir to Idukki reservoir]]<br />
*Latitude : 9⁰ 48′ 35 ” N<br />
*Longitude: 77⁰ 06′ 20” E<br />
*Panchayath :Erattayar<br />
*Village: Erattayar<br />
*District : Idukki<br />
*River : Perinjamkutty ( Tributory of Periyar)<br />
*Release from Dam to river : Erattayar<br />
*Year of completion : 1975<br />
*Type of Dam : Concrete- Gravity<br />
*Classification : MH ( Medium Height)<br />
*Maximum Water Level (MWL) : EL 754.38 m<br />
*Full Reservoir Level ( FRL) : EL 754.38 m<br />
*Storage at FRL :5.352 Mm3<br />
*Height from deepest foundation : 19.81 m<br />
*Length : 146.3 m <ref>{{Cite web|title=Fact file on dams onwed by Kerala State Electricity Board|url=http://expert-eyes.org/dams.html|access-date=2021-07-24|website=expert-eyes.org}}</ref><br />
*Spillway : Ogee type – 2 Nos. Radial gates, each of size 7.62 x 6.10 m<br />
*Name of Project : Idukki HEP<br />
*River Outlet : 1 No. vertical lift type, 2.44 x 1.83 m<br />
*Purpose of Project : Hydro Power<br />
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==References==<br />
{{Reflist}}<br />
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{{Dams in Kerala}}<br />
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{{coord missing|Kerala}}<br />
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[[Category:Dams in Kerala]]<br />
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