Narakakkanam Weir (Malayalam:നാരകക്കാനം തടയണ) is a diversion dam constructed across Narakakkanam River in Mariyapuram panchayath of
Thankamani Village in
Idukki district 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 ...
. Narakakkanam weir is an augmentation weir for the Idukki Hydro Electric Project . Narakakkanam,
Azhutha,
Vazhikkadavu
Vazhikkadavu is a village in Nilambur taluk of Malappuram district, Kerala, India.
Geography
It is located on the CNG (Calicut-Nilambur-Gudalur) road 20 km north-east of Nilambur. Just after Vazhikkadavu town the ''ghat'' road known as ...
,
Vadakkepuzha and
Kuttiar diversion schemes were later added to augment the
Idukki reservoir . The height of the dam is from the deepest foundation and length is .
Specifications
*Location Latitude : 9⁰ 50′ N
*Longitude: 77⁰ 00′ E
*Panchayath : Mariyapuram
*Village: Thankamani
*District : Idukki
*River Basin : Periyar
*River : Narakakkanam river
*Release from Dam to river : Periyar
*Taluk through which release flows : Thodupuzha
*Year of completion :
*Name of Project : Idukki HEP
*Purpose of Project : Hydro Power
*Installed capacity of the Project 780 MW
*Type of Dam : Concrete- Gravity
*Classification ; Weir
*Maximum Water Level (MWL) : EL 770.00 m
*Full Reservoir Level ( FRL): EL 768.00 m
*Storage at FRL 0.00396 Mm3
*Height from deepest foundation : 11.50 m
*Length : 45.20 m
*Spillway : Ungated – Overflow section
*Crest Level : EL 768.00 m
*River Outlet : Not provided
*Officers in charge & phone No. Assistant Executive Engineer, Idukki Augmentation Scheme, Moolamattom. Phone-9496009429
References
Dams in Idukki district
{{India-dam-stub