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]

Perunthenaruvi Weir
Perunthenaruvi Weir is located in Kerala
Perunthenaruvi Weir
Location of Perunthenaruvi Weir in Kerala
Perunthenaruvi Weir is located in India
Perunthenaruvi Weir
Perunthenaruvi Weir (India)
CountryIndia
LocationPathanamthitta, Kerala
Coordinates9°24′44″N 76°52′48″E / 9.41222°N 76.88000°E / 9.41222; 76.88000
PurposePower
StatusOperational
Opening date2017 (7 years ago) (2017)
Owner(s)Kerala State Electricity Board
Dam and spillways
Type of damGravity dam
ImpoundsPamba River
Height (foundation)10.93 m (35.9 ft)
Length227.50 m (746.4 ft)
Elevation at crest51.00 m (167.32 ft)
Spillway typeUngated - overflow section
Reservoir
Total capacity10,000,000 m3 (350,000,000 cu ft)
Maximum water depth55.20 m (181.1 ft)
Normal elevation51.00 m (167.32 ft)
Power Station
Operator(s)Kerala State Electricity Board
TypeRun-of-the-river
Turbines2 × 3 MW
Installed capacity6 MW
Website
Official website

Specifications

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  • 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

Hydrology

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

Tourism

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Poonthenaruvi water falls

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]

References

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  1. ^ "Diversion Structures in Pathanamthitta district – KSEB Limited Dam Safety Organisation". Retrieved 2021-07-27.  This article incorporates text available under the CC BY-SA 2.5 license.
  2. ^ Chief Engineer (Civil Construction) South, Vydyuthi Bhavanam, Thiruvananthapuram. "Perunthenaruvi Small Hydro Electric Project".{{cite web}}: CS1 maint: multiple names: authors list (link)
  3. ^ "Perumthenaruvi". pathanamthittatourism.com. Official Website of DTPC, Pathanamthitta. Retrieved 2021-07-27.
  4. ^ "Perunthenaruvi project inaugurated". The Hindu. 2016-03-02. ISSN 0971-751X. Retrieved 2021-07-27.