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. The project lead by Dr.D.Babu Paul IAS, who appointed as Project Coordinator, Idukki Hydel Project & District Collector with several engineers like Sri. C.V Mathews, Sri. M. Ramachandran, (Retired Chief Engineers, Kerala State 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 Prime Minister Smt. Indira Gandhi. Features Idukki Dam is tall, constructed between the two mountains - Kuravanmala () and Kurathimala (). Length of the dam on its top is . It has a width of in the top and in the bottom. The gross storage capacity of the dam is 1.996 cubic kms (70.50 tmc ft). About 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 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. Usage [ { "type": "Feature", "geometry": { "type": "Point", "coordinates": [77.144167,9.528611, ] }, "properties": { "title": "Mullaperiyar Dam", "description": "", "marker-symbol": "dam", "marker-size": "large", "marker-color": "0050d0" } }, { "type": "Feature", "geometry": { "type": "Point", "coordinates": [76.976111,9.842778 ] }, "properties": { "title": "Idukki Dam", "description": "", "marker-symbol": "dam", "marker-size": "large", "marker-color": "ff0000" } }, { "type": "Feature", "geometry": { "type": "Point", "coordinates": [76.966944,9.845278] }, "properties": { "title": "Cheruthoni Dam", "description": "", "marker-symbol": "dam", "marker-size": "large", "marker-color": "0050d0" } }, { "type": "Feature", "geometry": { "type": "Point", "coordinates": [76.896111,9.802942] }, "properties": { "title": "Kulamavu Dam", "description": "", "marker-symbol": "dam", "marker-size": "large", "marker-color": "0050d0" } }, { "type": "Feature", "geometry": { "type": "Point", "coordinates": [ 77.124,10.106] }, "properties": { "title": "Mattupetty Dam", "description": "", "marker-symbol": "dam", "marker-size": "large", "marker-color": "0050d0" } }, { "type": "Feature", "geometry": {