This article includes a list of general references, but it remains largely unverified because it lacks sufficient corresponding inline citations . (October 2020) (Learn how and when to remove this template message)
|Location||Rantembe, Central Province|
|Construction began||November 1982|
|Construction cost||Rs. 4.898 billion (1986)|
|Dam and spillways|
|Type of dam||Embankment dam|
|Height (foundation)||94 m (308 ft)|
|Length||485 m (1,591 ft)|
|Elevation at crest||239 m (784 ft)|
|Width (crest)||10 m (33 ft)|
|Width (base)||303 m (994 ft)|
|Spillway type||Tainter gate, chute|
|Spillway capacity||8,100 m3/s (290,000 cu ft/s)|
|Total capacity||861,000,000 m3 (3.04×1010 cu ft)|
|Active capacity||558,000,000 m3 (1.97×1010 cu ft)|
|Catchment area||2,330 km2 (900 sq mi)|
|Surface area||1,350 ha (13.5 km2)|
|Turbines||2 × 63 MW|
|Installed capacity||126 MW|
|Annual generation||428 GWh|
The Randenigala Dam (Sinhala : රන්දෙනිගල වේල්ල) 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.
Construction of the dam cost approximately Rs. 4.898 billion (1986), of which 24.6% (Rs. 1.207 billion) was funded by the local government, and the majority of the remainder by Germany.
The Randenigala Dam is located 19 km (11.8 mi) downstream of the Victoria Dam, and 2.8 km (1.7 mi) upstream of the Rantembe Dam. Randenigala measures 94 m (308 ft) in height, 485 m (1,591 ft) in length, with a crest and base width of 10 m (33 ft) and 303 m (994 ft) respectively. The embankment dam is made mostly of rocks, and consists of a clay core.
Three large controlled tainter gate chute spillways, with a combined discharge volume of 8,100 m3/s (290,000 cu ft/s), are constructed at the southern end of the dam. The three spillways measure 270 m (886 ft) in length, with a combined width of 48 m (157 ft).
The dam creates the Randenigala Reservoir. With a catchment area of 2,330 km (1,450 mi) and a total storage capacity of 861,000,000 m3 (3.04×1010 cu ft), Randenigala is one of the largest reservoirs in the country.
The reservoir experiences approximately 1,250–3,000 mm (49.21–118.11 in) of rainfall annually. In addition to this, the reservoir is also topped up with water from the Victoria Reservoir upstream, and the Mahaweli River.
The power station is located immediately downstream of the dam, on the left bank. Water from the reservoir is delivered to the power station via a single steel-lined tunnel with a length and diameter of 270 m (886 ft) and 6.2 m (20.3 ft) respectively.
The plant consists of two generators with a rated capacity of 63 MW each, powered by two francis turbines. The units were commissioned in August and September 1986 respectively. At a combined capacity of 126 MW, the plant generates 428 GWh annually.
The Bakhtiari Dam is an arch dam currently under construction on the Bakhtiari River within the Zagros Mountains on the border of Lorestan and Khuzestan Provinces, Iran. At a planned height of 325 metres (1,066 ft), it will be the world's tallest dam once completed and withhold the second largest reservoir in Iran after the Karkheh reservoir. The main purpose of the dam is hydroelectric power production and it will support a 1,500 MW power station. By trapping sediment, the dam is also expected to extend the life of the Dez Dam 50 km (31 mi) downstream.
The Darbandikhan Dam is a multi-purpose embankment dam on the Diyala River in northern Sulaymaniyah Governorate, Iraq. It was constructed between 1956 and 1961. The purpose of the dam is irrigation, flood control, hydroelectric power production and recreation. Due to poor construction and neglect, the dam and its 249 MW power station have undergone several repairs over the years. A rehabilitation of the power station began in 2007 and was completed in 2013.
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.
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 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.
Seimare Dam, also known as Hini Mini or spelled Seymareh, is an arch dam on the Seimare River in Badreh County, Ilam Province, Iran. The primary purpose of the dam is hydroelectric power generation. Studies for the dam were carried out in the mid to late 1970s and construction began on the diversion works in 1997. In 2006, concrete placement began and on 19 May 2011, the dam began to impound the river. The dam's first generator became operational in 2013. The power plant, located downstream, houses three 160 MW Francis turbine-generators with an installed capacity of 480 MW.
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.
The Chirkey Dam is an arch dam on the Sulak River in Dagestan, Russia. The main purpose of the dam is hydroelectric power production and it supports a 1,000 MW power station. Construction on the dam began in 1964, the first generator was operational by 1974, the last in 1976 while the project was officially completed in 1978. It is the tallest arch dam in Russia.
La Yesca Dam is an embankment dam on the Santiago River 90 km (56 mi) northwest of Guadalajara on the border of Mexico's Nayarit and Jalisco states. Construction on the dam began in 2007 after Empresas ICA was awarded the main construction contract. The dam was inaugurated by President Felipe Calderón on 6 November 2012. The dam supports a 750 MW hydroelectric power station and is part of the Hydroelectric System Santiago. Its construction will improve the regulation of water flow and subsequently power generation downstream at the El Cajón and Aguamilpa Dams.
The Rantembe Dam is a 52-megawatt hydroelectric gravity dam at Rantembe, in the Central Province of Sri Lanka. Construction of the dam began in January 1987, and was completed in April 1990 as scheduled. The dam was constructed by the German 'Joint Venture Randenigala'; a different German joint venture has built the Randenigala Dam, further upstream.
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.
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.
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.
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.
The Gal Oya Dam is an embankment dam in the Uva Province of Sri Lanka. The dam creates one of the largest and most iconic reservoirs in the country, the Gal Oya Reservoir. Water from the reservoir is used primarily for irrigation in the Uva and Eastern provinces, in addition to powering a small hydroelectric power station. Construction of the dam and reservoir began in August 24, 1949, completing four years later in 1953.
The Mahaweli Development programme is known as the largest multipurpose national development programme in the history of Sri Lanka and is also considered as the keystone of the government's development programme that was initiated in 1961.
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.
The Maduru Oya Dam is an irrigation dam built across the Maduru Oya. The embankment dam measures 1,090 m (3,580 ft) in length, 41 m (135 ft) in height, and creates the Maduru Oya Reservoir. The reservoir has a catchment area of 453 km2 (175 sq mi) and a storage capacity of 596,000,000 cubic metres (2.10×1010 cu ft) The proposed Maduru Oya Solar Power Station is to be built over the surface of the Maduru Oya reservoir.
The Moragolla Dam is a planned hydroelectric dam in Moragolla, Sri Lanka. The dam is to be 35 m (115 ft) high and is planned to create the 1,980,000 m3 (70,000,000 cu ft) Moragolla Reservoir with a maximum supply level at 548 m (1,798 ft) MSL. Upon completion, the Moragolla Power Station would have a gross installed capacity of 30 megawatts from two francis turbines, capable of generating approximately 85 GWh annually.
|Wikimedia Commons has media related to Randenigala Reservoir .|