Perunthenaruvi Weir

This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. Find sources: "Perunthenaruvi Weir" – news · newspapers · books · scholar · JSTOR (July 2021) (Learn how and when to remove this message)

Perunthenaruvi Weir
Location of Perunthenaruvi Weir in Kerala Show map of Kerala Perunthenaruvi Weir (India) Show map of India
Country	India
Location	Pathanamthitta, Kerala
Coordinates	9°24′44″N 76°52′48″E / 9.41222°N 76.88000°E / 9.41222; 76.88000
Purpose	Power
Status	Operational
Opening date	2017 (7 years ago) (2017)
Owner(s)	Kerala State Electricity Board
Dam and spillways
Type of dam	Gravity dam
Impounds	Pamba River
Height (foundation)	10.93 m (35.9 ft)
Length	227.50 m (746.4 ft)
Elevation at crest	51.00 m (167.32 ft)
Spillway type	Ungated - overflow section
Reservoir
Total capacity	10,000,000 m3 (350,000,000 cu ft)
Maximum water depth	55.20 m (181.1 ft)
Normal elevation	51.00 m (167.32 ft)
Power Station
Operator(s)	Kerala State Electricity Board
Type	Run-of-the-river
Turbines	2 × 3 MW
Installed capacity	6 MW
Website Official website

Perunthenaruvi Weir is a diversion dam built across Pamba river at villages of Naranammoozhy and Vechoochira in Pathanamthitta District of Kerala, India. Perumthenaruvi Small Hydroelectric Project 6 MW (2×3) is a run-of-the-river scheme in river Pamba, and the weir is a part of this scheme. This envisages the utilization of water from 442 km² (171 sq mi) catchment of Pamba and Azhutha river for electricity generation under a net head of 18.00 m. The power house is located on the left bank of Pamba river. The weir is a concrete gravity type with a height of 10.93 metres (35.9 ft) and a length of 227.50 metres (746.4 ft). Taluks through which the release flow are Ranni, Konni, Kozhencherry, Thiruvalla, Chengannur, Kuttanadu, Mavelikara and Karthikappally.^[1]

• Latitude : 9⁰ 24′ 44 ” N
• Longitude: 76⁰ 52′ 48” E
• Panchayath : Ranni- Perinad
• Village : Naranammoozhi & Vechoochira
• District : Pathanamthitta
• River Basin : Pamba
• River: Pamba
• Release from Dam to river : Pamba
• Type of Dam : Concrete – Gravity
• Classification : Weir
• Maximum Water Level (MWL) : EL 55.20 m
• Full Reservoir Level ( FRL) : EL 51.0 m
• Storage at FRL : 1.00 Mm3
• Height from deepest foundation : 10.93 m
• Length : 227.50 m
• Spillway : Ungated- Overflow section
• Year of completion : 2017
• Crest LevelEL : 51.00 m
• Name of Project : Perunthenaruvi SHEP
• River Outlet : 2 Nos. 2.00x 4.00m

• Catchment area - 442 km²
• Average Annual Yield - 1093 Mm3
• Peak flood at the diversion weir - 395Cumecs ^[2]

The Poonthenaruvi Water falls and related Eco tourism project is near the weir site.^[3] There is hanging bridge and view towers to spectate the beauty of the ravine.^[4]