This article needs additional citations for verification. (July 2021) |
Anayirangal Dam (Malayalam: ആനയിറങ്കൽ അണക്കെട്ട്) is an earthen dam built on the Panniyar river in Chinnakanal and Santhanpara panchayats, 22 km (14 mi) from Munnar in Idukki district of Kerala, India.[1] The dam is surrounded on one side by forest and on the other by Tata Tea Plantation. The dam is located near the Munnar - Kumily road. The water flowing from the dam reaches Kuthungal and Ponmudi 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 the Tamil 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]
| Anayirangal Dam | |
|---|---|
 | |
  Location of Anayirangal Dam in Kerala  Anayirangal Dam (India) | |
| Official name | Anayirankal Dam |
| Country | India |
| Location | Idukki, Kerala |
| Coordinates | 10°00′34″N 77°12′27″E / 10.00944°N 77.20750°E |
| Purpose | Power |
| Status | Operational |
| Opening date | 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″N 77°01′41″E / 9.97306°N 77.02806°E |
| Operator(s) | Kerala State Electricity Board |
| Commission date | 1963 |
| Turbines | 2 × 16.2 MW (Francis-type) |
| Installed capacity | 32.4 MW |
| Annual generation | 158 MU |
| Website Official website | |
The project is situated in Muthirapuzha basin, a sub basin of Periyar 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 to Ponmudi reservoir at the downstream. This water is then diverted to Panniyar Power station located on the left bank of Muthirapuzha and released back to Muthirapuzha River and flows downstream to Kallarkutty reservoir.From there, the river flows through taluks of Udumpanchola, Devikulam, Kothamangalam, Muvattupuzha, Kunnathunadu, Aluva, Kodungalloor, Paravur.[3]
Specifications
edit- Type of Dam : Earthen dam
- Classification : HH (High Height)
- Panchayath : Santhanpara
- Village : Pooppara, Chinnakanal, Rajakumari
- District : Idukki
- River : Panniyar
- Height from deepest foundation : 34.14 m
- Length : 326.13 m
- Full Reservoir Level ( FRL) : EL 1207.02 m
- Storage at FRL : 50.68 Mm3
Reservoir
edit
Reservoir is formed by impounding the Panniyar river. There is a second reservoir made by Ponmudi dam which is part of the Panniyar project.
- Full Reservoir Level (FRL) = 1207.01 m
- Minimum Drawdown level (MDDL)= 1188.1 m
- Effective Storage at FRL = 49.87 MCM
- Generation potential at FRL = 65.62 MU
Power generation
editPanniyar 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]
References
edit- ^ "Anayirankal Dam – KSEB Limited Dam Safety Organisation". Retrieved 7 July 2021.
- ^ "പ്രളയത്തിലും നിറയാതെ ഇടുക്കിയിലെ ആനയിറങ്കൽ ഡാം". Asianet News Network Pvt Ltd (in Malayalam). Retrieved 7 July 2021.
- ^ Wilson, James (13 August 2018). "Understanding the 42-year-old Idukki dam which is now saving Kerala". The Print.
- ^ "PANNIYAR POWER STATION". Kerala State Electricity Board.