Author: Abhishek Singh

First Highest Dam in the World

The World’s First Tallest Dam – ‘Nurek Dam’ was built across the Vakhsh River in Tajikistan- a country land locked by mountains in central Asia. The construction of the dam began in 1961, when Tajikistan was a part of a socialist federation of Europe and Asia called ‘Union of Soviet Socialist Republic’ or USSR as it was most commonly known. The project was completed in 1980; making the Nurek Dam the tallest of all the dams in the world during that period with a height of 300 mtr (980 ft). The dam is mainly a hydroelectric project; though, the water stored in the reservoir is also used for irrigational and other domestic purposes. Recently in 2013 the completed Jinping-I Arch Dam on Yalong River in Liangshan China, reaching a height of 305 mtr (1001 ft); has surpassed the Nurek Dam  making it the second tallest in the world. The Nurek Dam is likely to become the third tallest dam in the world after the completion of ‘Rogun Dam’ in Tajikistan with a maximum height of 335 meters (1099 ft) which is planned to be completed in 2018. The Nurek Dam is owned and operated by ‘Barqi Tojik’- the national integrated power company of Tajikistan. Location of the Nurek Dam Vakhsh River also known as Surkhob is a major river in the landlocked Republic of Tajikistan. It flows from north...

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First Rubber Dam in India

India’s first Rubber Dam constructed across Jhanjhavathi River in Parvathipuram was inaugurated on 1st January 2006 by then Chief Minister of Andhra Pradesh Mr. Y.S. Rajsekhara Reddy. It is also an inter-state project as the River originates in Odisha. The successful opening of the project was an exceptional achievement by the state government and a symbol of progress in an area which had been a strong hold of Naxalites for decades. The installation of Rubber Dam was a temporary measure taken by the Government of Andhra Pradesh as the construction of a fully fledged dam was opposed by the State Government of adjoining state close to the site- Odisha. The construction of a complete embankment dam would have submerged at least three to five villages in Odisha and thus it was opposed by the State Government. The Rubber Dam across Jhanjhavathi supports an irrigational area of around 10000 hectares with a network of canals and distributaries. Location of Jhanjhavathi Rubber Dam in India The Jhanjhavathi Rubber Dam is located at Rajyalakshmipuram village in a northern coastal district of Andhra Pradesh- Vizianagaram; across the River Jhanjhavathi. Jhanjhavathi is a main tributary of Nagavali River; both of the rivers originate in the adjoining state of Odisha. Vizianagaram is around 60 km from Vishakhapatnam; which is a major seaport; also Vizianagaram is well connected by trains and buses to many other important...

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First Arch Dam in the World

The world’s first Arch Dam- ‘Glanum Dam’, was located on the south west of the French town of Saint-Reme-de-Provence. The dam was also called as ‘Vallon de Baume Dam’ and was built around 1st century BCE to supply water to the ancient Roman town of Glanum. The location of the dam at a narrow gorge (The Gorge of Peyrou) between the hills of Les Alpilles provided an ideal location for the construction of an Arch Dam. Though the dam was damaged during the construction of a modern dam at same place in 1891; it is established beyond doubt that the Glanum Dam was the first ever known dam of its kind. Location of the Glanum Dam The site of the Glanum Dam is located at a distance of 1 km south of the town of Saint-Reme-de-Provence in south west France. The dam was built on a narrow gorge called the Gorge of Peyrou, that cuts through the hills of Les Alpilles; a small range of low mountains in southern France. The town of Saint-Reme-de-Provence is north to the Alpilles and to the Glanum Dam’s site; and both are almost at an approximate distance of 20 km (12 miles) from the Avignon town. Avignon has an airport and is well connected with Saint-Reme by roads and highways. Details of the Dam The Glanum Dam is known to be the oldest...

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Largest Hydroelectric Dam in the World

The world’s largest hydroelectric power generation dam lies in a prefecture level city of ‘Yichang’ in the ‘Yiling’ district in central China province of Hubei. The dam is built across the Yangtze River in the town of Sandouping. A prefecture level city is administrative head quarter ranking below a province and above a county. The name of the dam across the Yangtze River is ‘Three Gorges Dam’ and it is the world’s largest hydroelectric power generation station as per total installed capacity. ‘Three Gorges’ is a term referring to three adjacent gorges in the middle reaches of Yangtze River. The total installed capacity of the dam is 22,500 MW and it also serves the purpose of improving navigation as well as containing flood downstream by storing water. ‘Three Gorges Dam’ is regarded as a monument of both national as well as social importance in China; it is also weighed as a proof of China’s advancements in the field of engineering, as it uses exceptionally large turbines and is also constructed to have minimum green house gas emission. Despite the advantages the dam has also remained controversial both in China as well as other parts of the world, as it was built flooding an archeological site and displacing approx. 1.3 million people; it is also blamed for causing ecological imbalances resulting in landslides. Location of the ‘Three Gorges Dam’ The...

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First Arch Dam in India

Idukki Arch Dam in the southern Indian state of Kerala is the first of its kind in Asia. It is a Double Curvature Arch Dam impounding Periyar River at a narrow gorge between two granite hills in Idukki, Kerala. In a layman’s explanation – a double curvature arch dam is a dam which is curved both horizontally and vertically towards the upstream i.e. towards the source. Such type of dams are thinner than ‘earth filled’ or ‘masonry’ dams and are also economical as they require less amount of concrete. They are suitable for narrow gorges as the hydrostatic pressure of the water pressing against its curved surface; strengthens its structure. The dam is constructed and owned by the ‘Kerala State Electricity Board’ and the water stored by the Idukki curved dam as well as two other dams; Cheruthoni- a Concrete Gravity Dam and Kulamavu- a Gravity/Masonry Dam is used by the Hydroelectric Power Station at Moolamattom (780 MW), which is an underground power station located inside a cave. The approximate distance between the Idukki Arch Dam and the Hydro Power Station at Moolamattom is 43 km and the water from the dam to the station is carried by underground pipes. Location of Idukki Arch Dam Idukki Arch Dam is constructed on a narrow gorge also known as the Idukki gorge between two granite hills – Kuravanmala (839 ft) and...

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