Perunthenaruvi Weir

Diversion dam in Kerala, India
Dam in Pathanamthitta, Kerala
9°24′44″N 76°52′48″E / 9.41222°N 76.88000°E / 9.41222; 76.88000PurposePowerStatusOperationalOpening date2017 (7 years ago) (2017)Owner(s)Kerala State Electricity BoardDam and spillwaysType of damGravity damImpoundsPamba RiverHeight (foundation)10.93 m (35.9 ft)Length227.50 m (746.4 ft)Elevation at crest51.00 m (167.32 ft)Spillway typeUngated - overflow sectionReservoirTotal 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 StationOperator(s)Kerala State Electricity BoardTypeRun-of-the-riverTurbines2 × 3 MWInstalled capacity6 MWWebsite
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]

Specifications

  • 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

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

Tourism

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

  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.