Moozhiyar Dam

Moozhiyar Dam is a gravity dam located close to Kakki reservoir in Seethathodu panchayath of Pathanamthitta district in Kerala, India. The Kakkad Hydroelectric Project is powered by water from the dam.^[1] The water level is set at 192.5 meters. KSEB is responsible for the maintenance of the dam and other ancillary works. The Kakkad Hydroelectric Project generates 50 MW of electricity using 2 turbines of 25 MW each year.^[2] The annual output is 262 MU. The machine was commissioned on 16 September 1999. Kakkad Hydro electric Project is the second stage development of Pamba river basin. The installed capacity is 50 MW (2 x 25MW). This scheme utilises the tail race water from Sabarigiri power station and flow received from Moozhiyar and Velluthode rivers. Two dams feed water to the powerhouse. The Moozhiyar Dam creates the main reservoir of this project.^[3] Taluks through which release flow are Ranni, Konni, Kozhencherry, Thiruvalla, Chengannur, Kuttanadu, Mavelikara and Karthikappally.^[4]

Moozhiyar Dam
Location of Moozhiyar Dam in Kerala Show map of Kerala Moozhiyar Dam (India) Show map of India
Country	India
Location	Pathanamthitta, Kerala
Coordinates	9°18′29″N 77°03′56″E
Purpose	Power
Status	Operational
Opening date	1999 (1999)
Owner	Kerala State Electricity Board
Dam and spillways
Type of dam	Gravity dam
Impounds	Kakkattar
Height (foundation)	30.04 m (98.6 ft)
Length	176.5 m (579 ft)
Elevation at crest	186.53 m (612.0 ft)
Width (crest)	6.40 m (21.0 ft)
Dam volume	≈ 52,160 m3 (1,842,000 cu ft)
Spillways	3 nos
Spillway type	Radial gates, each of size 7.62 × 6.70 m
Reservoir
Creates	Moozhiyar Reservoir
Active capacity	1.16 MCM
Inactive capacity	186.36 m (611.4 ft)
Catchment area	36.52 km2 (14.10 sq mi)
Surface area	0.1457 km2 (0.0563 sq mi)
Maximum water depth	192.94 m (633.0 ft)
Normal elevation	192.63 m (632.0 ft)
Kakkad Power Station
Operator	Kerala State Electricity Board
Commission date	July 1999
Turbines	2 × 25 MW, Francis-type
Installed capacity	50 MW
Annual generation	262 MU
Website KSEB - Official website

Specifications

• Panchayath : Seethathodu
• Village :Seethathodu
• District : Pathanamthitta
• River Basin :Pamba
• River: Kakkad ar
• Release from Dam to river : Kakkad Ar
• Year of completion : 1999
• Type of Dam : Concrete – Gravity
• Classification: HH- ( High Height)
• Maximum Water Level (MWL) : EL 192.94 m
• Full Reservoir Level ( FRL) : EL 192.63 m
• Storage at FRL : 1.50 Mm3
• Height from deepest foundation : 30.04 m
• Length : 176.5 m
• Spillway : 3 Nos. radial gates, each of size 7.62×6.70 m

Reservoir

The water spread area is 0.1457 km² and the Full Reservoir Level (FRL) is at 192.63 m. The Minimum Drawdown level (MDDL) is 181.36 m and the effective storage at FRL is at 1.16 MCM.^[5] The Sabarigiri Power Station commissioned during 1966-67, has six generators with vertical shaft Pelton turbine as the prime mover. After power generation, water from the power station is released to the Moozhiyar reservoir.^{[citation needed]}