Anayirangal Dam

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
Purpose	Power
Status	Operational
Opening date	1965 (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
Operator(s)	Kerala State Electricity Board
Commission date	1963 (1963)
Turbines	2 × 16.2 MW (Francis-type)
Installed capacity	32.4 MW
Annual generation	158 MU
Website Official website

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. 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.

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.

Specifications

• 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

Anayirangal Reservoir

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

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.