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| Anayirangal Dam | |
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  Location of Anayirangal Dam in Kerala Show map of Kerala Anayirangal Dam (India) Show map of India | |
| Official name | Anayirankal Dam |
| Country | India |
| Location | Idukki,Kerala |
| Coordinates | 10°00′34″N77°12′27″E / 10.00944°N 77.20750°E /10.00944; 77.20750 |
| Purpose | Power |
| Status | Operational |
| Opening date | 1965 (60 years ago) (1965) |
| Owner(s) | Kerala State Electricity Board |
| Dam and spillways | |
| Type of dam | Earth fill dam |
| Impounds | Panniyar river |
| Height (foundation) | 34.13 m (112.0 ft) |
| Length | 326.13 m (1,070.0 ft) |
| Elevation at crest | 1,207.02 m (3,960.0 ft) |
| Spillways | 3 nos, ungated (9.35 × 4.75 m) |
| Spillway type | Ogee type |
| Spillway capacity | 348 m³/s |
| Reservoir | |
| Creates | Anayirankal Reservoir |
| Total capacity | 50,680,000 m3 (1.790×109 cu ft) |
| Catchment area | 64.92 km2 (25.07 sq mi) |
| Maximum water depth | 1,210.07 m (3,970.0 ft) |
| Normal elevation | 1,207.02 m (3,960.0 ft) |
| Panniar Power Station | |
| Coordinates | 9°58′23″N77°01′41″E / 9.97306°N 77.02806°E /9.97306; 77.02806 |
| Operator(s) | Kerala State Electricity Board |
| Commission date | 1963 (62 years ago) (1963) |
| Turbines | 2 × 16.2MW (Francis-type) |
| Installed capacity | 32.4MW |
| Annual generation | 158 MU |
| Website Official website | |
Anayirangal Dam is anearthen dam built on thePanniyar river inChinnakanal andSanthanpara panchayats, 22 km (14 mi) fromMunnar inIdukki district ofKerala, India.[1] The dam is surrounded on one side by forest and on the other by Tata Tea Plantation. The dam is located near theMunnar - Kumily road. The water flowing from the dam reaches Kuthungal andPonmudi dams through the Panniyar river. Power is generated at Kuthungal and Panniyar powerhouses. The dam stores water from small streams flowing from Bealram and rainwater flowing from the hills on theTamil Nadu border. The height of the dam is 34.14 metres (112.0 ft) and Length is 326.13 metres (1,070.0 ft). The reservoir usually fills up in June and July.[2]
The project is situated in Muthirapuzha basin, a sub basin ofPeriyar River. The reservoir is created by constructing a dam at Anayirankal. Construction was led by E.U.Philipose, Superintending Engineer, Kerala State Electricity Board. The dam has ungated spill way system. The water stored in the reservoir is released to the river downstream through an outlet. This water is diverted by an overflow barrage at Kuthungal to Kuthungal Power House. After generation of power the water is released toPonmudi reservoir at the downstream. This water is then diverted to Panniyar Power station located on the left bank of Muthirapuzha and released back toMuthirapuzha River and flows downstream to Kallarkutty reservoir.From there, the river flows through taluks ofUdumpanchola,Devikulam,Kothamangalam,Muvattupuzha,Kunnathunadu,Aluva,Kodungalloor,Paravur.[3]
Reservoir is formed by impounding the Panniyar river. There is a second reservoir made by Ponmudi dam which is part of the Panniyar project.
Panniyar Power House in Vellathooval village, Konnathadi Grama Panchayat, on the left bank of Muthirapuzha, generates 30 MW of electricity using 2 turbines of 15 MW each. Annual production is 158 MU. In 2003, the project was upgraded from 30 MW to 32.4 MW.[4]