Idukki dam - Wikipedia Idukki dam Idukki dam Location of Idukki dam in India Idukki Dam ( Kerala ) Idukki Dam ( Tamil Nadu ) Show map of India Show map of Kerala Show map of Tamil Nadu Show all Location Idukki taluk, Kerala, India Coordinates 9 ° 50 ′ 34 '' N 76 ° 58 ′ 34 '' E ﻿ / ﻿ 9.84278 ° N 76.97611 ° E ﻿ / 9.84278 ; 76.97611 Coordinates : 9 ° 50 ′ 34 '' N 76 ° 58 ′ 34 '' E ﻿ / ﻿ 9.84278 ° N 76.97611 ° E ﻿ / 9.84278 ; 76.97611 Purpose Power generation Status Operational Construction began 30 April 1969 Opening date February 1973 Owner ( s ) Kerala State Electricity Board Dam and spillways Type of dam Concrete, double curvature parabolic, thin arch. Impounds Periyar River Height 168.91 m ( 554 ft ) Length 365.85 m ( 1,200 ft ) Dam volume 450,000 m ( 16,000,000 cu ft ) Spillways Nil Reservoir Total capacity 55.5 km3 Active capacity 1,460 × 10 ^ m ( 1,183,641 acre ⋅ ft ) Inactive capacity 536 × 10 ^ m ( 434,542 acre ⋅ ft ) Catchment area 649.3 km ( 251 sq mi ) Surface area 60 km ( 23 sq mi ) Normal elevation 732.62 m ( 2,404 ft ) Power Station Commission date Turbines 6 x 130 MW Pelton - type Installed capacity 780 MW 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 Kuravan and Kurathi in Kerala, India. At 168.91 metres ( 554.2 ft ), it is one of the highest arch dams 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. The dam type is a concrete, double curvature parabolic, thin arc dam. This dam was constructed along with two other dams at Cheruthoni and Kulamavu. Together, the three dams have created an artificial lake that is 60 km ( 23 sq mi ) 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.. Idukki Dam Reservoir Contents 1 History 1.1 Early surveys 1.2 Construction 2 Features 3 Usage 4 See also 5 References 6 External links 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, 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. 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 did n'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 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 The construction of this Dam commenced on 30 April 1969 under the guidance of 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. 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 168.91 m ( 554.2 ft ) tall, constructed between the two mountains - Kuravanmala ( 839 m ( 2,753 ft ) ) and Kuravathimala ( 925 m ( 3,035 ft ) ). Length of the dam on its top is 365.85 m ( 1,200.3 ft ). It has a width of 7.62 m ( 25.0 ft ) in the top and 19.81 m ( 65.0 ft ) in the bottom. About 464,000 m ( 16,400,000 cu ft ) 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 43 km ( 27 mi ) from the dam. One thing to be noted is, Idukki Arch dam does n't have any shutters to be opened so it has to rely on the Cheruthoni dam to maintain the reservoir water level. Usage Wikimedia © OpenStreetMap Dams in Periyar Power Generation The Project harnesses a major portion of the power potential of 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 780MW 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 669.2 m ( 2,196 ft ) 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. Idukki valley is 121 km ( 75 mi ) 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 77 km ( 48 mi ) and is about 450 -- 748 m ( 1,476 -- 2,454 ft ) above sea level. The Idukki Reservoir formed by three dams - Cheruthoni, Idukki and Kulamavu - extends to 33 km ( 21 mi ). 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 Kerala portal Water portal Renewable energy portal 2018 Kerala floods List of dams and reservoirs in Kerala Kulamavu Dam Cheruthoni Dam References Jump up ^ `` Idukki Arch Dam ''. GOVERNMENT OF KERALA. Retrieved 20 August 2018. ^ Jump up to : `` Idukki District Hydroelectric projects ''. Retrieved 2007 - 03 - 12. Jump up ^ `` Salient Features -- Dam ''. Retrieved 2007 - 03 - 12. Jump up ^ https://www.thehindu.com/news/national/kerala/man-who-changed-the-course-of-a-river/article6721679.ece Jump up ^ Idukki Jump up ^ https://english.mathrubhumi.com/news/offbeat/idukki-dam-completes-42-years-today-power-1.2597167 Jump up ^ https://www.thenewsminute.com/article/building-idukki-dam-workers-hired-project-recall-struggle-85857 Jump up ^ Hindu, The. `` Filled to its brim, Idukki dam woos tourists ''. The Hindu. Retrieved 21 September 2013. External links Wikimedia Commons has media related to Idukki Dam. Idukki Dam at Structurae Idukki dam safe : Kadavoor Idukki Hydroelectric Project Old Photos https://idukki.gov.in/tourist-place/idukki-arch-dam/ Interesting Facts about Idukki dam Power stations and organisations of Kerala Power stations Chembukadavu Idukki Dam Idamalayar Dam Rajiv Gandhi Combined Cycle Power Project Organisations Kerala State Electricity Board Related topics Electricity sector in India States of India by installed power capacity Indian states ranking by households having electricity Tourism in Kerala Organisations Kerala Tourism Development Corporation Department of Tourism ( Kerala ) Gandhi Seva Sadan Informative articles Chinese fishing nets God 's Own Country Chundan Vallam Jatayu Earth 's Center Kerala backwaters Pooram Puli Kali Temple Festivals of Kerala Tourist Resorts ( Kerala ) Vallam Kali Wildlife of Kerala Airports Aranmula International Airport Sabarigiri International Airport Calicut International Airport Cochin Duty Free Cochin International Airport Kannur International Airport Kollam Airport ( Defunct ) Trivandrum International Airport Amusement parks Fantasy Park Kottakkunnu Vismaya Wonderla Archaeological sites Anchuthengu Ariyannur Umbrellas Cheraman Parambu Kadavallur Kandanissery Kudakkallu Parambu Pattanam Tangasseri Thovarimala Ezhuthupara Beaches Alappuzha Beach Azheekal beach Chavakkad Beach Cherai Beach Fort Kochi beach Kappad Kappil, Thiruvananthapuram Kappkadavu Kollam Beach Kovalam Mappila Bay Marari Beach Meenkunnu Beach Munakkal Beach Mundakkal Beach Muzhappilangad Beach Muziris beach Payyambalam Beach Poovar Shankumugham Beach Snehatheeram Beach Paravur Thekkumbhagam Thirumullavaram Beach Thottada Beach Varkala Beach Boat races Aranmula Boat Race Champakulam Moolam Boat Race Indira Gandhi Boat Race Kallada Boat Race Kandassankadavu Boat Race Nehru Trophy Boat Race Payippadu Vallam Kali President 's Trophy Boat Race Sree Narayana Jayanthi Boat Race Triprayar Boat Race Caves Chovvanur burial cave Edakkal Caves Kottukal cave temple Nedumala caves, Piralimattam Vizhinjam rock caves Dams Banasura Sagar Dam Bhoothathankettu Cheruthoni Dam Chimmony Dam Idamalayar Dam Idukki Dam Kakki Reservoir Karapuzha Dam Malampuzha Dam Mangalam Dam ( dam ) Mattupetty Dam Mullaperiyar Dam Neyyar Dam Parambikulam Dam Pazhassi Dam Peechi Dam Peringalkuthu Dam Peruvaripallam Dam Ponmudi Dam Poomala Dam Pothundi Dam Sholayar Dam Siruvani Dam Thanneermukkom Bund Thenmala Dam Thunakkadavu Dam Vazhani Dam Walayar Dam Festivals Aanayoottu Aaraattu Aluva Sivarathri festival Arattupuzha Pooram Edakkunni Uthram Vilakku Feast of Saint Raphael, Ollur Gandharvanpattu Ilanjithara Melam India International Boat Show International Film Festival of Kerala Kadavallur Anyonyam Kanyarkali Karivela Kerala Adventure Carnival Keralotsavam Kollam Pooram Kottakkal pooram Kottankulangara Festival Machad Mamangam Nalukulangara Pooram Kalpathi Ratholsavam Nenmara Vallanghy Vela Onam Onathallu or Avittathallu Peruvanam Pooram Tattamangalam Kuthira Vela Thirumandhamkunnu Pooram Thrissur Pooram Uthralikavu Pooram Forts Anchuthengu Fort Bekal Fort Chandragiri Fort, Kerala Cranganore Fort East Fort Fort Emmanuel Hosdurg Fort Nedumkotta Overbury 's Folly Palakkad Fort Pallipuram Fort St Thomas Fort, Tangasseri St. Angelo Fort Tellicherry Fort William Fort Islands Dharmadam Island Ezhumanthuruthu Gundu Island Islands of Kollam Kavvayi Kuruvadweep Munroe Island Parumala Pizhala Pulinkunnoo Ramanthuruthu Valiyaparamba Vallarpadam Vypin Willingdon Island Lakes Ashtamudi Lake Enamakkal Lake Mananchira Oranju Poika Padinjarechira Paravur Lake Pookode Lake Sasthamcotta Lake Veeranpuzha Vellayani Lake Vadakkechira Vanchikulam Vembanad Lighthouses Vizhinjam Tangasseri Kovilthottam Alappuzha Manakkodam Vypin Azhikode Chetwai Ponnani Beypore Kozhikode Kannur Mountains Aathanad Agastya Mala Ambanad Hills Ambukuthi mala Anamudi Anginda peak Banasura Hill Chembra Peak Elivai Malai Ilaveezha Poonchira Illickal Kallu Kunnathoor Padi Marayur Meenuliyan Para Nelliampathi Paithalmala Ponmudi Poomala Urakam Hill Vagamon Vagavurrai Vellarimala Museums 8 Point Gallery Cafe, Kollam Arakkal Museum Archaeological Museum, Thrissur Indian Business Museum Indo - 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Question: where does the water from idukki dam go
Answer: Kudayathurpuzha