Vazhikadavu Weir (Malayalam:വഴിക്കടവ് തടയണ) is a diversion dam of concrete gravity type constructed across
Meenachil River
The Meenachil River or Meenachilaar (Malayalam: ), also known as Kavanar, Valanjar, is a river in Kerala. It is one of the most treacherous rivers in Kerala due to its flash floods, heavy undercurrents and woods and debris it carries from the m ...
at
Teekoy Village in
Kottayam District
Kottayam (), is one of 14 districts in the Indian state of Kerala. Kottayam district comprises six municipal towns: Kottayam, Changanassery, Pala, Erattupetta, Ettumanoor, and Vaikom. It is the only district in Kerala that neither borders the ...
in
Kerala
Kerala ( ; ) is a state on the Malabar Coast of India. It was formed on 1 November 1956, following the passage of the States Reorganisation Act, by combining Malayalam-speaking regions of the erstwhile regions of Cochin, Malabar, South ...
,
India
India, officially the Republic of India (Hindi: ), is a country in South Asia. It is the seventh-largest country by area, the second-most populous country, and the most populous democracy in the world. Bounded by the Indian Ocean on the so ...
. The Vazhikkadavu weir is constructed as an augmentation scheme to Idukki HEP. The dam has a height of from the deepest foundation and a length of .
Narakakkanam,
Azhutha, Vazhikkadavu,
Vadakkepuzha and
Kuttiar diversion schemes were later added to augment the Idukki reservoir. The Vazhikadavu diversion scheme envisages diversion of the water from 6 km
2 catchment of Vazhikkadavu Ar ( tributory of Meenachil Ar.) to Idukki reservoir by constructing an unlined tunnel of and a weir which is 58 m long for regulation and additional power generation of 18.2 Million units at
Idukki Power station. The weir site and tunnel inlet are located in
Meenachil taluk of Kottayam District and tunnel exit site is located in
Peermade
Peermade, also spelt Peerumedu (Malayalam: പീരുമേട്) is a village, Grama Panchayat and hill station in the state of Kerala, India. It lies above sea level in the Western Ghats (Sahyadri) about east of Kottayam on the way to The ...
taluk of
Idukki district. The diversion weir site is near
Vagamon – 2 km from Vagamon town on Vagomon
Erattupetta road. The construction started in 1989 but was completed in 2002.
Specifications
* Latitude : 9⁰ 41′ N
* Longitude: 76⁰ 54′ E
* Panchayath : Teekoy
* Village : Teekoy
* District : Kottayam
* River Basin : Periyar
* River : Meenachil river
* Release from Dam to river : Meenachil river
* Taluk through which release flows : Meenachil
* Year of completion : 2002
* Name of Project:Idukki HEP
* Type of Project : Hydro Power
* Type of Dam : Concrete- Gravity
* Classification : Weir
* Maximum Water Level (MWL) : EL 939.00
* Full Reservoir Level ( FRL) : EL 936.70 m
* Storage at FRL : 0.18 Mm3
* Height from deepest foundation : 10.20 m
* Length : 58.00 m
* Spillway : Ungated – Overflow section
* Crest Level : EL 936.70 m
* River Outlet : 1 No. Circular type, 0.75 m dia
References
{{coord missing, Kerala
Dams completed in 2002
Dams in Kottayam district