Kukule Ganga Dam

Last updated
Kukule Ganga Dam
Sri Lanka relief location map.jpg
Red pog.svg
Location of Kukule Ganga Dam in Sri Lanka
Country Sri Lanka
Coordinates 06°34′48″N80°19′37″E / 6.58000°N 80.32694°E / 6.58000; 80.32694 Coordinates: 06°34′48″N80°19′37″E / 6.58000°N 80.32694°E / 6.58000; 80.32694
Purpose Power
StatusOperational
Construction beganJuly 1999 (1999-07)
Opening dateJune 2005 (2005-06)
Construction cost Rs.16.5 billion
Dam and spillways
Type of dam Gravity dam
Impounds Kukule River
Spillways 4
Reservoir
CreatesKukule Ganga Reservoir
Total capacity1,630,000 m3 (58,000,000 cu ft)
Catchment area 312 km2 (120 sq mi)
Surface area88 ha (0.88 km2)
Normal elevation205 m (673 ft)
Coordinates 06°37′00″N80°16′33″E / 6.61667°N 80.27583°E / 6.61667; 80.27583
Type Run-of-the-river
Turbines 2 × 40 megawatts (54,000 hp)
Installed capacity 80 megawatts (110,000 hp)
Annual generation 317 gigawatt-hours (1,140 TJ)

The Kukule Ganga Dam is a 110 m (360 ft) gravity dam built across the Kukule River in Kalawana, Sri Lanka. The run-of-river-type dam feeds an underground hydroelectric power station located approximately 5 kilometres (3.1 mi) away, via tunnel. [1] [2]

Contents

Dam and reservoir

The gravity dam is built across the Kukule River, which is a major mid-basin tributary of the Kalu River. The dam measures 110 m (361 ft) and 20 m (66 ft) in length and height respectively, with four spillways, and a sand trap on the left-bank. [1] Each spillway gate measures 9.3 m (31 ft) high and 12 m (39 ft) wide, and uses the same automated technology as the Victoria Dam. [3]

The dam creates the Kukule Ganga Reservoir, which has a capacity and catchment area of 1,630,000 m3 (58,000,000 cu ft) and 312 km2 (120 sq mi) respectively. After passing through the dam and sand traps, water from the reservoir is fed into a 5.71 km (3.55 mi) long tunnel, which leads to the underground power station. The tunnel from the dam to the power station, with an internal diameter of 10.5–4.8 m (34.4–15.7 ft), creates a gross head of 185 m (607 ft). [3]

Power station

Water from the tunnel is fed into the 80 MW underground power station, consisting of two 40 MW units. This capacity was intentionally limited to 70 MW due to load issues. [4] The power station generates an average of 317 GWh annually. [2]

Two transformers step up the voltage of the power generated to 132 kV , which is then transferred to the national grid at the Mathugama Substation, via a 27 kilometres (17 mi) long 132 kV double-circuit transmission line. [2]

See also

Related Research Articles

Gandhi Sagar Dam Dam in Mandsaur District Madhya Pradesh

The Gandhi Sagar Dam is one of the four major dams built on India's Chambal River. The dam is located in the Mandsaur, Neemuch districts of the state of Madhya Pradesh. It is a masonry gravity dam, standing 62.17 metres (204.0 ft) high, with a gross storage capacity of 7.322 billion cubic metres from a catchment area of 22,584 km2 (8,720 sq mi). The dam's foundation stone was laid by Prime Minister of India Pandit Jawaharlal Nehru on 7 March 1954, and construction of the main dam was done by leading contractor Dwarka Das Agrawal & Associates and was completed in 1960. Additional dam structures were completed downstream in the 1970s.

Murray Hydroelectric Power Station Dam in Snowy Mountains, New South Wales

The Murray Region Hydroelectric Power Stations refers to two of the original seven hydroelectric power stations, both located near the town of Khancoban in the Snowy Mountains region of New South Wales, Australia. The two power stations are part of the Snowy Mountains Scheme, a vast hydroelectricity and irrigation complex constructed in south-east Australia between 1949 and 1974 and now run by Snowy Hydro. Although both power stations are physically located in New South Wales, since 1 July 2008 all power generated has been allocated to the Victorian region of the National Electricity Market. The stations are not located on the Murray River.

Victoria Dam (Sri Lanka) Dam in Teldeniya

Victoria Dam is an arch dam located 130 mi (209 km) upstream of the Mahaweli River's mouth and 4 mi (6 km) from Teldeniya. Its main purposes are irrigation and hydroelectric power production. It is the tallest dam in Sri Lanka, and supports a 210 MW power station, the largest hydroelectric power station in the country. Construction of the dam commenced in 1978, and was ceremonially completed by then-President Jayewardene in April 1985.

Samanala Dam Dam in Balangoda

The Samanala Dam is a dam primarily used for hydroelectric power generation in Sri Lanka. Commissioned in 1992, the Samanalawewa Project is the third-largest hydroelectric scheme in the country, producing 405 GWh of energy annually. It was built with financial support from Japan and the United Kingdom. It is notable for a large leak on its right bank. Power production continues as planned despite the leakage, and the water from the leak now provides two thirds of the water issued by the reservoir for agriculture in downstream areas.

Deriner Dam Dam in Artvin, Artvin Province, Turkey

Deriner Dam is a concrete double-curved arch dam on the Çoruh River 5 km (3.1 mi) east of Artvin in Artvin Province, Turkey. The main purpose of the dam is hydroelectric power production and additionally flood control. Construction on the dam began in 1998, the reservoir began to fill in February 2012 and the power station was completed by February 2013. It will have a 670 MW power house and is the tallest dam in Turkey. The dam is being implemented by Turkey's State Hydraulic Works and constructed by a consortium of Turkish, Russian and Swiss companies.

Upper Kotmale Dam Dam in Talawakele, Nuwara Eliya

The Upper Kotmale Dam is located in Talawakele, within the Nuwara Eliya District, in the Central Province of Sri Lanka. The dam feeds the third largest hydroelectric power station in the country.

Fengman Dam Dam in Jilin City, Jilin Province

The Fengman Dam is a concrete gravity dam 20 km (12 mi) from Jilin City on the Second Songhua River in Jilin Province, China. The main purposes of the dam are hydroelectric power generation and flood control. Construction of the dam began in 1937 and was complete in 1953. The dam is owned and operated by Northeast China Grid Company Limited.

Ichari Dam Dam in Dakpathar

The Ichari Dam is a concrete gravity dam on the Tons River 13 km (8 mi) north of Dakpathar in Uttarakhand, India. The primary purpose of the dam is hydroelectric power production and it is a run-of-the-river-type. It was completed in 1972. The dam diverts water to the Chibro Power Station which is then returned to the Tons River before being fed to the Khodri Power Station.

Maneri Dam Dam in Uttarkashi

The Maneri Dam is a concrete gravity dam on the Bhagirathi River located at Maneri, 8.5 kilometres (5.3 mi) east of Uttarkashi in Uttarkashi district, Uttarakhand, India. The primary purpose of the dam is to divert water into a tunnel which feeds the 90 megawatts (120,000 hp) run-of-the-river Tiloth Power Plant.

Dongfeng Dam Dam in Qingzhen

The Dongfeng Dam is an arch dam on the Wu River 65 km (40 mi) northwest of Qingzhen in Guizhou Province, China. The primary purpose of the dam is hydroelectric power generation and it supports a 570 MW power station. Construction on the dam began in 1989 and the first generator was operational in 1994, the last in 1995. The generators were up-rated between 2004 and 2005; bringing their capacity from 170 MW each to 190 MW.

Hunanzhen Dam Dam on the Qiantang River, located south of Quzhou in Zhejiang Province, China

The Hunanzhen Dam is a trapezoidal buttress dam on the Qiantang River, located 27 km (17 mi) south of Quzhou in Zhejiang Province, China. The primary purpose of the dam is hydroelectric power generation but it also serves to provide for flood control and irrigation water supply. Construction on the dam began in 1958 but was halted in 1961. It recommenced in 1970, the first generator was operational in 1979 and the project complete in 1980. The original installed capacity of the dam's power plant was 170 MW but the plant was expanded with an additional 100 MW generator, commissioned in 2006.

The Upper Cisokan Pumped Storage Plant is a proposed pumped-storage hydropower facility in Indonesia, due for completion by 2025.

Broadlands Dam Dam in Kitulgala

The Broadlands Dam is a 35 MW run-of-the-river hydroelectric complex currently under construction in Kitulgala, Sri Lanka. The project is expected to be completed in 2020, and will consist of two dams, and a power station further downstream.

Randenigala Dam Dam in Rantembe, Central Province

The Randenigala Dam is a large hydroelectric embankment dam at Rantembe, in the Central Province of Sri Lanka. Construction of the dam began in November 1982, and was completed in approximately 4 years. The dam and power station was ceremonially opened by then President J. R. Jayawardene in 1986.

Bowatenna Dam Dam in Bowatenna

The Bowatenna Dam is a 100 ft (30 m) high gravity dam at Bowatenna, in the Naula, Central Province of Sri Lanka. The dam was built in June 1981, and is used primarily for irrigation. A 40 MW power station is also constructed 5,800 ft (1,800 m) downstream, for hydroelectric power generation.

Polgolla Barrage Dam in Polgolla, Central Province

The Polgolla Barrage, is a barrage built across the Mahaweli River at Polgolla, in the Central Province of Sri Lanka. The barrage is used to increase the volume of water, for transfer to the hydroelectric power station located 8 km (5 mi) north, via penstock.

Norton Dam Dam in Norton Bridge,Central Province

The Norton Dam is a gravity dam built across the Kehelgamu Oya, which is a major tributary to the Kelani River. The dam is built at Norton Bridge, in the Central Province of Sri Lanka.

Laxapana Dam Dam in LaxapanaCentral Province

The Laxapana Dam is a gravity dam built across the Maskeliya Oya, 2.8 km (1.7 mi) downstream of the Laxapana Falls, in the Central Province of Sri Lanka.

Udawalawe Dam Dam in Udawalawe

The Udawalawe Dam is a large irrigation dam in Udawalawe, in the Southern Province of Sri Lanka. The dam consists of an embankment section and a gravity section, combining the total dam length to approximately 3.9 km (2.4 mi). The dam is also used for hydroelectric power generation, powering three 2 MW units, commissioned in April 1969.

Uma Oya Hydropower Complex Dam in Uva Province

The Uma Oya Hydropower Complex (also internally called Uma Oya Multipurpose Development Project or UOMDP) is a irrigation and hydroelectric complex currently under construction in the Badulla District of Sri Lanka. Early assessments of project dates back to 1989, when the first studies was conducted by the country's Central Engineering and Consultancy Bureau. The complex involves building a dam across Dalgolla Oya, and channelling water over a 3,975 m (13,041 ft) tunnel to Mathatilla Oya, both of which are tributaries of the Uma Oya. At Mathatilla Oya, another dam is constructed to channel 145,000,000 m3 (5.1×109 cu ft) of water per annum, via a 15,290 m (50,160 ft) headrace tunnel to the Uma Oya Power Station, where water then discharged to the Alikota Aru via a 3,335 m (10,942 ft) tailrace tunnel. The Alikota Aru is a tributary of the Kirindi Oya.

References

  1. 1 2 "Kukule Ganga Dam, Sri Lanka". Water-Technology. Retrieved 11 February 2014.
  2. 1 2 3 Vimukthi Fernando (11 May 2003). "Kukule Ganga Hydro Power Project: Relief from shocking electricity bills?". Sunday Observer . Archived from the original on 24 September 2015. Retrieved 11 February 2014.
  3. 1 2 Kamal Laksiri (3 June 2003). "Kukule Ganga: The story so far". Water Power Magazine. Retrieved 11 February 2014.
  4. "Kukule Ganga Hydroelectric Power Project" (PDF). Japan International Cooperation Agency . Retrieved 11 February 2014.