Kallar Dam

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Kallar Dam

Kallar Dam (Malayalam : കല്ലാർ അണക്കെട്ട്) is a small diversion dam constructed at Perinchankuttyar in Nedunkandam grama Panchayat, Idukki District, Kerala, India. ^[1] It acts mainly as a diversion dam to supply water to the Idukki Dam.^[2] It is a small dam measuring 67.91 m in length and 12.19 m in height. The water stored in the Kallar Dam reaches the Erattayar River through a tunnel and the Erattayar Dam through the Erattayar River. Water reaches Idukki Dam from Irattayar Dam through Irattayar Tunnel / Anchuruli Tunnel. Taluks through which release flow are Thodupuzha, Udupanchola, Devikulam, Kothamangalam, Muvattupuzha, Kunnathunadu, Aluva, Kodungalloor and Paravur. ^[3] Reservoir area of this Dam and the Gavi dam combined is 25 Hectars. ^{[4] [5]}

Specifications[]

• Latitude : 9⁰ 49′ 30 ” N
• Longitude: 77⁰ 09′ 20” E
• Panchayath : Nedumkandam
• Village : Kalkoonthal
• District : Idukki
• River Basin : Periyar
• River : Perinjamkutty ( Tributary of Periyar)
• Release from Dam to river : Periyar

• Type of Dam : Concrete- Gravity
• Classification : LH ( Low height)
• Maximum Water Level (MWL) : 824.48 meters
• Full Reservoir Level ( FRL) : 824.48 meters
• Storage at FRL : 0.793 Mm3
• Height from deepest foundation : 12.19 m
• Length : 57.91 m
• Spillway : Ogee type – 4 Nos. Radial gates, each of size 7.62 x 6.10 m
• Year of completion : 1975
• Crest Level : 818.38 m
• Name of Project : Idukki HEP
• River Outlet : No outlet
• Type of Project : Hydro Power

References[]