Kosani Saddle Dam

Last updated
Kosani Saddle Dam Kosani saddle dam.jpg
Kosani Saddle Dam

Kosani Saddle dam is an earthen dam constructed on Karamanthodu in Thariyode panchayath of Wayanad district in Kerala, India. It is a saddle dam of Banasura sagar reservoir built as a part of Kuttiayadi Augmentatuon Scheme. [1] The dam was built and is maintained by Kerala State Electricity Board. [2]

Contents

The Kuttiyadi Augmentation Scheme comprises a main dam known as Banasurasagar Dam, an earth fill dam and a concrete gravity spillway dam and six saddle dams namely, a) Kosani ( Earth fill dam) 13.8 metres (45 ft) high b) Near Kottagiri ( Earth fill dam) 11.0 metres (36.1 ft) high c) Kottagiri ( Earth fill dam)14.5 metres (48 ft) high d) Kuttiyadi ( Concrete dam)16.5 metres (54 ft) high e) Nayamoola ( Earth fill dam)3.5 metres (11 ft) high f)   Manjoora ( Earth fill dam)4.0 metres (13.1 ft) high. All the dams, except Kuttiady saddle, are earth fill dams. The Kuttiyadi saddle dam is a concrete dam. The spillway is located adjacent to the main dam at the right bank of the original river course. The water spread area at FRL / MWL is 12.77 km2. The catchment area of Banasurasagar Dam is 61.44 km2..

Specification

Dam/Weir: Kosani Saddle Dam
LocationLatitude:11⁰37’09”N

Longitude:75⁰55’14”E

Dam Features
Type of DamHomogeneous earth fill
Panchayath Thariode ClassificationLH ( Low Height)
VillageThariodeMaximum Water Level (MWL)EL 775.60 m
District Wayanad Full Reservoir Level ( FRL)EL 775.60 m
River BasinKabaniStorage at FRL209.25 Mm3
RiverKaramanthoduHeight from deepest foundation13.8 metres (45 ft) [3]
Release from Dam to riverNALength140.00 metres (459.32 ft)
Taluk through which release flowsNASpillwayNo spillway
Year of completion2005Crest LevelNA
Name of ProjectKuttiady Augmentation SchemeRiver OutletNA
Purpose of ProjectMulti purposeOfficers in charge & phone No.Executive Engineer, Dam Safety Division No. V, Thariode, PIN- 673122 Phone – 9446008415
Installed capacity of the Project231.75 MWAssistant Executive Engineer, Dam Safety Sub Division, Thariode PIN- 673122 Phone- 9496004480
Project Identification Code ( PIC)KL29LH0043Assistant Engineer,Dam Safety Section, Thariode PIN- 673122 Phone – 9496005761

Reservoir

Kutyadi Augmentation Reservoir Banasura sagar reservoir.jpg
Kutyadi Augmentation Reservoir
Kutyadi Reservoir layout Kutyadi augmentation Reservoir.jpg
Kutyadi Reservoir layout

The Gross Storage of Kuttiyadi Augmentation (Banasura sagar) Reservoir is 209 Mm3 and live storage 185 Mm3. The water stored in the reservoir is diverted to the reservoir of Kuttiyadi Hydro Electric Project through an interconnecting tunnel. The sill level of diversion tunnel at inlet is 750.83 m. The size and shape of tunnel is varying. It is varying from 2.35 m dia. circular lined tunnel for a length of 890m &2.85 m D-shaped unlined tunnel for a length of 3873 m. Maximum diversion is11.6 m3/s. The diverted water is used for power generation from Kuttiyadi Power Station. FRL of the reservoir is 775.60 m. Top level of dam is 778.50 m. There are four radial gates, each of size 10.97 m x 9.20 m. Crest level of spillway is 767.00 m. Spillway capacity is 1664 m3/s. One lower level outlet is provided in the spillway structure at750.75 m of size 1.10 m X 1.75 m to release irrigation requirement. [4]

Related Research Articles

<span class="mw-page-title-main">Banasura Sagar Dam</span> Dam in Padinjarathara, Wayanad, Kerala

Banasura Sagar Dam, Situated in Padinjarathara and it is the Largest Earth Dam in India and Second Largest Dam in Asia Banasura Dam is under the control of Padinjarathara KSEB Substation. Dam impounds the Karamanathodu tributary of the Kabini River, is part of the Indian Banasurasagar Project consisting of a dam and a canal project started in 1979. The goal of the project is to support the Kakkayam Hydro electric power project and satisfy the demand for irrigation and drinking water in a region known to have water shortages in seasonal dry periods. The dam is also known as Kuttiyadi Augmentation Main Earthen Dam. The dam has a height of 38.5 metres (126 ft) and length of 685 metres (2,247 ft).

<span class="mw-page-title-main">Kakki dam</span> Dam in Kerala, India

Kakki Dam is a concrete gravity dam built on the Kakki river, a tributary of the Pampa river in the Ranni forest in the Seethathodu panchayat of Pathanamthitta district in Kerala, India. The dam is located in a forested area adjacent to the Periyar National Park. It was built in 1966 as part of the Sabarigiri Hydroelectric Project. The water sources of the dam are from the Pampa dam and the Kakki river. The Sabarigiri project envisaged creation of two reservoirs which are Pamba and Kakki reservoirs and connecting these together to form a single source of water. The water from Pamba reservoir is connected to the Kakki reservoir through an underground tunnel of length 3.21 km. The intake of the Sabarigiri Powerhouse is from Kakki reservoir. The dam is 336 metres (1,102 ft) long and 116 metres (381 ft) high and is located at an elevation of 981.45 metres (3,220.0 ft) above sea level. The release flows through Ranni, Konni, Kozhencherry, Thiruvalla, Chengannur, Kuttanadu, Mavelikara and Karthikappally taluks before emptying into the Vembanad lake.

Azhutha Dam is a small diversion dam built on the Azhutha River which is a tributary of the Pamba River, at Azhutha in Peerumed Grama Panchayat of Idukki District, Kerala, India. It is a small concrete gravity dam that is only 72 metres (236 ft) long and 14 metres (46 ft) high. It acts mainly as a diversion dam to supply water to the Idukki Dam. The Azhutha Dam was constructed as an augmentation dam for the Idukki Hydro Electric Project. Construction of the project started in 1987 and was expected to be commissioned in 1991, but the project overrun and was only partially commissioned in June 1998. The year of completion was 2007. The release of the water from the dam is to Azhutha river and it flows through Ranni and Ayroor taluks.

<span class="mw-page-title-main">Erattayar Dam</span> Diversion dam in Kerala, India

Erattayar Dam is a small, diversion dam built on the Erattayar river in Erattayar grama panchayat near Kattappana town in Idukki district of Kerala, India. It acts mainly as a diversion dam to supply water to the Idukki dam. Diversion of water from Erattayar forebay to Idukki reservoir is through a tunnel called Anchuruli tunnel which is 3.77 km (2.34 mi) long. Construction of the dam was completed in the year 1989.

<span class="mw-page-title-main">Kallar Dam</span> Diversion dam in Kerala, India

Kallar Dam is a small, diversion dam constructed at Perinjamkutty river in Nedumkandam grama panchayat of Idukki district, Kerala, India. It acts mainly as a diversion dam to supply water to the Idukki dam.

<span class="mw-page-title-main">Kallarkutty Dam</span> Dam in Kerala, India

Kallarkutty Dam is a gravity dam built on the Muthirapuzha river, a tributary of the Periyar river, as part of the Neriamangalam Hydroelectric Project at Kallarkutty in Vellathooval panchayat of Idukki district in Kerala, India. The water discharged from the Chenkulam dam's powerhouse and the Muthirapuzha river is diverted to the Neriamangalam powerhouse near Panamkutty above the Pambla dam. The Hydroelectric Project was commissioned on 27 January 1961 to generate 45 MW of power using 3 turbines with a capacity of 15 MW. In 2006, the project was upgraded from 45 MW to 52.65 MW. Taluks through which release flow are Udumbanchola, Devikulam, Idukki, Kothamangalam, Muvattupuzha, Kunnathunadu, Aluva, Kodungalloor and Paravur. The Project was led by Kerala State Electricity Board Engineer E.U. Philipose

<span class="mw-page-title-main">Vellathooval Dam</span> Dam in Kerala, India

Vellathooval Dam is a diversion dam built on the Muthirappuzha river in Vellathooval village in Devikulam taluk of Idukki district in Kerala, India. The height of the dam from the deepest foundation is 16 metres (52 ft) and length is 75 metres (246 ft). Water from the Sengulam Power House and from the Muthirapuzha river gets released to the Vellathooval dam. Water from this dam is diverted through a canal system to the powerhouse near Panniyar After the water flow is used to generate hydroelectricity, the water is released back into the river. The dam is one of the major tourist attractions in the Idukki District, Kerala.

<span class="mw-page-title-main">Perunthenaruvi Weir</span> Diversion dam in Kerala, India

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.

<span class="mw-page-title-main">Gavi Dam</span> Dam in Kerala

Gavi Dam or Gaviar Dam is a small, gravity dam constructed as a part of Sabarigiri hydro electric project on Gaviyar, which is a tributary of Pamba river at Seethathode village in Pathanamthitta district of Kerala, India. Taluks through which release flow are Ranni, Konni, Kozhencherry, Thiruvalla, Chengannur, Kuttanadu, Mavelikara and Karthikappally.

<span class="mw-page-title-main">Meenar-1 Dam</span> Diversion dam in Kerala, India

Meenar-1 Dam is a concrete, gravity dam constructed across Meenar river in Seethathodu village of Pathanamthitta district in Kerala, India. It is a diversion dam built as a part of Sabarigiri hydro electric project.

<span class="mw-page-title-main">Upper Moozhiyar Dam</span> A diversion dam in Kerala, India

The Upper Moozhiyar Dam is an earthen dam constructed across the Moozhiyar River in the village of Seethathodu in Pathanamthitta district, Kerala, India. This dam was constructed as a part of the Sabarigiri Augmentation Scheme. The stream is located on the southern side of the Kakki reservoir. It is an embankment structure. The Sabarigiri Hydro Electric Project is the second largest hydroelectric project of Kerala and is located in Pathanamthitta district. The dam was constructed to divert the upper reaches of the Moozhiyar River, a tributary of the Pamba River, to the Kakki–Anathode reservoir through a tunnel. The surplus over the storage flows over the rock-cut spillway to the Moozhiyar River. Taluks through which the release flows are Ranni, Konni, Kozhencherry, Thiruvalla, Chengannur, Kuttanadu, Mavelikara, and Karthikappally. The nearest city is Vandiperiyar.

Narakakkanam Weir is a diversion dam constructed across Narakakkanam River in Mariyapuram panchayath of Thankamani Village in Idukki district in Kerala, India. Narakakkanam weir is an augmentation weir for the Idukki Hydro Electric Project. Narakakkanam, Azhutha, Vazhikkadavu, Vadakkepuzha and Kuttiar diversion schemes were later added to augment the Idukki reservoir. The height of the dam is 11.50 metres (37.7 ft) from the deepest foundation and length is 45.20 metres (148.3 ft).

Vadakkepuzha Weir is a diversion dam of Earthen type constructed across Vadakkepuzha which is a tributary of Muvattupuzha river in Arakkulam village in Idukki district of Kerala, India. Vadakkepuzha weir is a part of an augmentation scheme for the Idukki Hydro Electric Project. Narakakkanam, Azhutha, Vazhikkadavu, Vadakkepuzha and Kuttiar diversion schemes were later added to Idukki HEP to augment the reservoir. Water from the reservoir is pumped in to Idukki reservoir through a pump house with three pumps.

<span class="mw-page-title-main">Kuttiyadi saddle dam</span> A concrete dam in Kerala

Kuttiyadi Saddle Dam is a concrete gravity dam built across Karamanathodu river which is a tributary of Kabani river in Padinjarathara village of Wayanad district in Kerala, India. It is one of the six dams created as part of Kuttiyadi Augmentation scheme which augments the Banasurasagar reservoir. The dam was built and is maintained by Kerala State Electricity Board.

<span class="mw-page-title-main">Near Kottagiri Saddle Dam</span> An earthen dam in Kerala

Near Kottagiri Saddle dam is an earthen dam constructed on Karamanthode which is a tributary of Kabani river at Thariyode, of Wayanad district in Kerala, India. It is a saddle dam of Banasura sagar Reservoir built as a part of Kuttiyadi Augmentation Scheme. The dam was constructed and is maintained by Kerala State Electricity Board. The height of the dam is 11.0 metres (36.1 ft) and the length is 110.0 metres (360.9 ft).

<span class="mw-page-title-main">Kottagiri Saddle Dam</span> Earthen Dam in Kerala, India

Kottagiri Saddle dam is an earthen dam constructed across Karamanthodu which is a tributary of Kabani river at Thariyode village of Wayanad district in Kerala, India. It is a saddle dam of the Banasura sagar reservoir built as part of The Kuttiyadi Augmentatuin Scheme. The dam was constructed and is maintained by Kerala State Electricity Board.

<span class="mw-page-title-main">Manjoora Saddle Dam</span> An earthen dam in Kerala

Manjoora Saddle dam is an earthen dam constructed across Karamanthode which is a tributary of Kabani River in Thariyode village of Wayanad district in Kerala, India. It is one of the six saddle dams of Banasura sagar reservoir built as oart of the Kuttiyadi Augmentation scheme.

<span class="mw-page-title-main">Nayanmoola Saddle Dam</span> An earthen dam in Kerala

Nayanmoola Saddle dam is an earthen dam constructed across Karamanthode at Thariyode village of Wayanad district in Kerala, India. It is a saddle dam of Banasura sagar reservoir built as a part of the Kuttiyadi Augmentation scheme. The dam has a height of 3.5 metres (11 ft) and a length of 24.0 metres (78.7 ft)

Kulamavu Saddle Dam (Near Junction) is one of the two saddle dams of Idukki Reservoir constructed across Kilivallithodu River which is a tributary of Periyar river at Arakkulam village in Idukki District of Kerala, India. It is a Rolled Earth filled dam with a height of 18.29 metres (60.0 ft) and a Length of 457.2 metres (1,500 ft). The road to Idukki from Thodupuzha passes over this saddle dam.

Kulamavu Saddle Dam (RIght Bank) is an Earthen Dam constructed across Kilivallithodu at Arakkulam village in Idukki District of Kerala, India. It is One of the two saddle dams constructed to augment Idukki reservoir. The dam has a height of 27.43 metres (90.0 ft) and a length of 384.96 metres (1,263.0 ft). It is a rolled earth filled dam which has no Spillways or river outlets

References

  1. "Banasurasagar Dam – KSEB Limited Dam Safety Organisation" . Retrieved 2021-07-30. Creative Commons by-sa small.svg  This article incorporates text available under the CC BY-SA 2.5 license.
  2. "Revised List of DRIP Dams | DRIP - Dam Rehabilitation and Improvement Project". damsafety.in. Retrieved 2021-07-30.
  3. indiawris.gov.in. "Dams in Kerala".
  4. "Kerala State Electricity Board Limited - Emergency Action Plan (Tier-I) Kuttiyadi Augmentation Dams (Kuttiyadi Main, Spillway, Nayanmoola & Manjoora)". www.kseb.in. Retrieved 2021-07-30.