Mattupetty Dam, near Munnar in Idukki District, is a storage concrete gravity dam built in the mountains of Kerala, India to conserve water for hydroelectricity. It has been a vital source of power and huge revenue for Idukki District. The large amount of perennially available water allows wild animals and birds to flourish. Construction of the dam was led by E.U. Philipose, Superintending Engineer, Kerala State Electricity Board. The height of the dam is 83.35 metres (273.5 ft) and the length is 237.74 metres (780.0 ft). Taluks through which the release flows are Udumpanchola, Devikulam, Kothamangalam, Muvattupuzha, Kunnathunadu, Aluva, Kodungalloor and Paravur.
Kulamavu Dam is a gravity/masonry dam on Kilivillithode, which is a tributary of the Periyar river in Arakkulam village, Idukki district in the Indian state of Kerala. It is one of three dams associated with the Idukki hydroelectric power project in the Indian state of Kerala. This dam is located towards the western side of the Idukki Arch Dam. This is a gravity dam with the top portion in concrete and the bottom in masonry.
The Lower Periyar Dam is a dam built on the Periyar River as part of the Lower Periyar Hydroelectric Project in Kanjikuzhi Panchayat, Idukki District, Kerala. The dam was built to generate electricity. The lower Periyar dam is at Pambla, five kilometres downstream from where Muthirapuzha merges with main river. This 32.36-metre-high dam made of concrete has a width of 284 meters. The powerhouse is at Karimanal, near Neriamangalam, where three generators are installed with a power production capacity of 60 MW each, or a cumulative 180 MW. The Dam was completed in the year 1998 Taluks through which release flow are Idukki, Kothamangalam, Muvattupuzha, Kunnathunadu, Aluva, Kodungalloor and Paravur.
Azhutha Dam is a small diversion dam built on the Azhutha River which is a tributary of the Pamba River, at Azhutha in Peerumed Grama Panchayat of Idukki District, Kerala, India. It is a small concrete gravity dam that is only 72 metres (236 ft) long and 14 metres (46 ft) high. It acts mainly as a diversion dam to supply water to the Idukki Dam. The Azhutha Dam was constructed as an augmentation dam for the Idukki Hydro Electric Project. Construction of the project started in 1987 and was expected to be commissioned in 1991, but the project overrun and was only partially commissioned in June 1998. The year of completion was 2007. The release of the water from the dam is to Azhutha river and it flows through Ranni and Ayroor taluks.
Erattayar Dam is a small, diversion dam built on the Erattayar river in Erattayar grama panchayat near Kattappana town in Idukki district of Kerala, India. 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 which is 3.77 km (2.34 mi) long. Construction of the dam was completed in the year 1989.
Kallar Dam is a small, diversion dam constructed at Perinjamkutty river in Nedumkandam grama panchayat of Idukki district, Kerala, India. It acts mainly as a diversion dam to supply water to the Idukki dam.
Kallarkutty Dam is a gravity dam built on the Muthirapuzha river, a tributary of the Periyar river, as part of the Neriamangalam Hydroelectric Project at Kallarkutty in Vellathooval panchayat of Idukki district in Kerala, India. The water discharged from the Chenkulam dam's powerhouse and the Muthirapuzha river is diverted to the Neriamangalam powerhouse near Panamkutty above the Pambla dam. The Hydroelectric Project was commissioned on 27 January 1961 to generate 45 MW of power using 3 turbines with a capacity of 15 MW. In 2006, the project was upgraded from 45 MW to 52.65 MW. Taluks through which release flow are Udumbanchola, Devikulam, Idukki, Kothamangalam, Muvattupuzha, Kunnathunadu, Aluva, Kodungalloor and Paravur. The Project was led by Kerala State Electricity Board Engineer E.U. Philipose
Kundala Dam, also known as Setuparvatipuram Dam, is a masonry gravity dam built on Muthirapuzha River in Mattupetty panchayat of Idukki district in Kerala, India. It is part of the Pallivasal Hydroelectric Project, the first hydroelectric project in Kerala. The dam is considered to be Asia's first arch dam. It has a height of 46.93 m (154.0 ft) and length of 259.38 m (851.0 ft). Release from dam is to river Palar and taluks through which release flow are Udumbanchola, Devikulam, Kothamangalam, Muvattupuzha, Kunnathunadu, Aluva, Kodungalloor and Paravur.
Chenkulam Dam is a gravity dam located on the Muthirapuzha river in Vellathooval panchayat of Idukki district in the Indian state of Kerala. It spans 144.50 metres (474.1 ft) long and stands 26.82 metres (88.0 ft). It hosts a 48 MW power plant.
Vellathooval Dam is a diversion dam built on the Muthirappuzha river in Vellathooval village in Devikulam taluk of Idukki district in Kerala, India. The height of the dam from the deepest foundation is 16 metres (52 ft) and length is 75 metres (246 ft). Water from the Sengulam Power House and from the Muthirapuzha river gets released to the Vellathooval dam. Water from this dam is diverted through a canal system to the powerhouse near Panniyar After the water flow is used to generate hydroelectricity, the water is released back into the river. The dam is one of the major tourist attractions in the Idukki District, Kerala.
Veluthodu dam is a part of Kakkad Hydro Electric Project and is located in Seethathode panchayath of Ranni Taluk in Pathanamthitta District of Kerala, India. It's a Concrete-Gravity dam built across the Veluthodu river, a tributary of Kakkad River which is again a tributary of Pamba River. The dam is built primarily for electricity. This diversion dam diverts water to the water conductor system from Moozhiyar reservoir to Kakkad Power Station. This power station utilises the tail race water from Sabarigiri power station and flow received from moozhiyar and velluthode rivers. After power generation, water from Kakkad power station is released to the Kakkad River. Taluks through which release flow are Ranni, Konni, Kozhencherry, Thiruvalla, Chengannur, Kuttanadu, Mavelikara and Karthikappally. It is operated by Kerala State Electricity Board.
R. A. Headworks or Ramaswamy Aiyar Headworks is a masonry type weir situated in Munnar panchayath of Munnar village in Idukki district of Kerala, India impounding mudirapuzha river. It is also called as Munnar Headworks. It is a part of Pallivasal Hydro Electric Project, the first hydro power project of Kerala State. There are two dams and one diversion weir as part of this project. These are Kundala Dam, Maduppetty Dam and R. A. Head works.
Kochu Pamba Weir is a diversion dam constructed across Pamba river in Seethathode village of Pathanamthitta district in Kerala, India. It is one of the five dams which are parts of Sabarigiri HydroElectric Project. These are Pamba dam, Kakki dam, Anathode dam, Gavi dam and Kochu Pamba weir Sabarigiri Hydro Electric Project is the second largest hydro electric project of Kerala and is located in Pathanamthitta district. This weir is constructed as a part of Sabarigiri Augmentation Scheme. Water from this reservoir is pumped in to the Pamba reservoir through a pump house located at the downstream of Pamba dam. Taluks through which release flow are Ranni, Konni, Kozhencherry, Thiruvalla, Chengannur, Kuttanadu, Mavelikara and Karthikappally.
Meenar-2 Dam is a concrete, gravity type of dam constructed across the Meenar river which is a tributary of Pamba river in Seethathodu village of Pathanamthitta district in Kerala, India. This dam is constructed as a part of Sabaigiri Augmentation Scheme.
Ranni-Perinad Weir is a diversion dam built in Kakkad river which is a tributary of Pamba River at Mampara in Ranni-Perinad villages of Pathanamthitta district of Kerala, India. The weir is a concrete-gravity type and is a part of Ranni – Perinad Small Hydro Electric Project, a run off the river scheme in Kakkad river in Pamba basin. It envisages the development of power by utilizing the tail race water from the Maniyar Power house, with installed capacity of 4.0 MW. The release of the water from the dam is to Kakkad river which in turn flows and joins Pamba river and flows through Taluks such as Ranni, Konni, Kozhencherry, Thiruvalla, Chengannur, Kuttanadu, Mavelikara and Karthikappally. The dam is also a part of Ranni-Perinad Water supply scheme.
Adyanpara Weir is a small diversion dam constructed across Kanjirapuzha River at Adyanpara in Chaliyar panchayath of Kurumbalangode village in Malappuram district of Kerala, India. This weir is a part of Adyanpara SHEP, which envisages development of power by utilizing the potential of Kanjirapuzha stream, a tributary of Chaliyar river. It consist of a diversion weir, desilting chamber of splay type, power tunnel of length 968.50m, an underground surge tank in circular shape. The 3.5 megawatt hydroelectric project has been setup as part of the Small Hydro Electric Project. The water from the weir flows to Kanjirapuzha through the Taluk of Nilambur. The dam is a concrete-gravity type dam with a height of 5.56 metres (18.2 ft) and a length of 58 metres (190 ft).
Lower Meenmutty dam is a small dam Constructed across Kallar river in Nandiyodu Panchayath of Thiruvananthapuram District in Kerala, India. Lower Meenmutty weir is constructed as a part of Lower Meenmutty Small Hydro Electric Project. The scheme envisages the development of power by utilizing the water of river Kallar in the Vamanapuram basin. A power plant of 3.5 MegaWatt capacity generates the power using the waters from the dam. After the power generation the water flows to Kallar river and it further flows through Nedumangadu and Chirayinkeezhu.
Vazhikadavu Weir is a diversion dam of concrete gravity type constructed across Meenachil River at Teekoy Village in Kottayam District in Kerala, India. The Vazhikkadavu weir is constructed as an augmentation scheme to Idukki HEP. The dam has a height of 10.20 metres (33.5 ft) from the deepest foundation and a length of 58 metres (190 ft).
Narakakkanam Weir is a diversion dam constructed across Narakakkanam River in Mariyapuram panchayath of Thankamani Village in Idukki district in Kerala, India. Narakakkanam weir is an augmentation weir for the Idukki Hydro Electric Project. Narakakkanam, Azhutha, Vazhikkadavu, Vadakkepuzha and Kuttiar diversion schemes were later added to augment the Idukki reservoir. The height of the dam is 11.50 metres (37.7 ft) from the deepest foundation and length is 45.20 metres (148.3 ft).
Vadakkepuzha Weir is a diversion dam of Earthen type constructed across Vadakkepuzha which is a tributary of Muvattupuzha river in Arakkulam village in Idukki district of Kerala, India. Vadakkepuzha weir is a part of an augmentation scheme for the Idukki Hydro Electric Project. Narakakkanam, Azhutha, Vazhikkadavu, Vadakkepuzha and Kuttiar diversion schemes were later added to Idukki HEP to augment the reservoir. Water from the reservoir is pumped in to Idukki reservoir through a pump house with three pumps.
