Narakakkanam Weir

Narakakkanam Weir (Malayalam:നാരകക്കാനം തടയണ) is a diversion dam constructed across Narakakkanam River in Mariyapuram panchayath of Thankamani Village in Idukki district in Kerala, India. [1] Narakakkanam weir is an augmentation weir for the Idukki Hydro Electric Project . Narakakkanam, Azhutha, Vazhikkadavu, Vadakkepuzha and Kuttiar diversion schemes were later added to augment the Idukki reservoir . The height of the dam is 11.50 metres (37.7 ft) from the deepest foundation and length is 45.20 metres (148.3 ft).[2]

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
  1. "Dams in Kerala".{{cite web}}: CS1 maint: url-status (link)
  2. "Diversion Structures in Idukki district – KSEB Limted Dam Safety Organisation". Retrieved 2021-07-29.

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