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26-866: The Bakreshwar River is a tributary of the Mayurakshi River . It originates in Santhal Parganas division of Jharkhand . It then flows through Birbhum district and meets the Kopai River . The combined waters flow into the Mayurakshi River in Murshidabad district . When traveling along the Panagarh–;Morgram Highway one has to turn left a little after Dubrajpur for Bakreshwar Thermal Power Station and its reservoir named Neel Nirjan (meaning blue solitude). It

52-672: A stub . You can help Misplaced Pages by expanding it . Mayurakshi River It has its source on Trikut Hills , about 16 kilometres (10 mi) from Deoghar in Jharkhand state. The Mayurakshi flows through Jharkhand and then through the districts of Birbhum and Murshidabad in West Bengal before flowing into the Hooghly River . The river is about 250 kilometres (160 mi) long. Mayurakshi literally means "peacock eyes" ( mayur/mor =peacock, akshi =eye). The comparison

78-689: A tidal lagoon or estuary as a method to capture tidal power from tidal flows are known as tidal barrages . The English usage of the term barrage originates from the Delta Barrage across the Nile branches north of Cairo, built between 1833 and 1862 by the French Linant de Bellefonds and Eugène Mougel employed by the Egyptian Public Works Department, with assistance from Barthélemy Prosper Enfantin and with

104-490: Is 660 metres (2,170 ft) long. The reservoir has an area of 67.4 square kilometres (16,650 acres) when full and has a storage capacity of 617,000,000 cubic metres (500,210 acre⋅ft). It had cost Rs. 16.10 crore. Apart from the Massanjore Dam there is a barrage , some 32 kilometres (20 mi) downstream, at Tilpara, near Suri . The barrage is 309 metres (1,013 ft) long and had cost Rs. 1.11 crore. In

130-419: Is a type of low-head , diversion dam which consists of a number of large gates that can be opened or closed to control the amount of water passing through. This allows the structure to regulate and stabilize river water elevation upstream for use in irrigation and other systems. The gates are set between flanking piers which are responsible for supporting the water load of the pool created. The term barrage

156-453: Is borrowed from the French word "barrer" meaning "to bar". Barrage dams have a series of gates that control the amount of water passing through. A barrage dam can be used to divert water for irrigation needs or limit the amount of water downstream. In most cases, a barrage dam is built near the mouth of the river. The site of dam construction needs to be thoroughly investigated to ensure that

182-510: Is gaining in popularity as a tourist spot. The thermal power station is near Chinpai. Bakreshwar canal provides irrigation. 23°47′50″N 87°46′36″E  /  23.797215°N 87.77672°E  / 23.797215; 87.77672 This article about a location in West Bengal is a stub . You can help Misplaced Pages by expanding it . This article related to a river in India is

208-454: Is substantial evidence, including case studies, that points to dam construction having environmental impact , there are also studies that show less damage than expected. Looking at plankton near some dams has shown that plankton is able to continue to live through changes to its habitat. Changes such as the pH levels near dams have been recorded, and plankton was minimally affected. Other species, however, such as trout, are affected more, due to

234-456: Is that a dam is built for water storage in a reservoir , which raises the level of water significantly. A barrage is built for diverting water, and raises the water level by only a few feet. The latter is generally built on flat terrain across wide, often meandering rivers. Similar distinctions are used in Egypt, where it is noted: "In this system a "dam" is a structure that forms a reservoir for

260-694: Is with the beautiful feathers on a peacock's tail. Though named after its crystal clear water in the dry season, the Mayurakshi floods its valley during the monsoons . Even after the construction of the Massanjore dam , it floodwaters continue to wreak havoc, washing away embankments. Many of the rivers that originate on the Chota Nagpur Plateau , including the Mayurakshi, and flow down into West Bengal are rain fed and have for ages wrought havoc with their seasonal floods. Annual rainfall over

286-502: The Massanjore dam located near Dumka in the state of Jharkhand (erstwhile Bihar) was not allowed to have any flood reserve. Simultaneously with construction of dams the state government in 1956, selectively took over flood control embankments till then maintained by the landlords or local bodies. Massanjore dam is about 38 kilometres (24 mi) upstream from Siuri in West Bengal. It is 47 metres (155 ft) high from its base and

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312-572: The Pagla-Bansloi to the Ajay, generated so huge flood volume that all embankments on the eastern side of the Bhagirathi were almost washed away and the whole of Nadia district , a larger part of Murshidabad district and northern areas of North 24 Parganas district were flooded and remained underwater for a long time. Construction of embankments is the only structural measure available for

338-517: The basin varies between 765 and 1,607 millimetres (30 and 63 in) with an average of 1,200 millimetres (47 in) of which 80 percent occurs during the monsoon season from June to September. Some of the historically important floods in this river were recorded by L.S.S. O'Malley in the Bengal District Gazetteers for the districts of Murshidabad and Birbhum. For the district of Birbhum, O'Malley has noted "in 1787 there

364-783: The blessing of the Egyptian Viceroy of the Ottoman Empire , Muhammad Ali . When the British, after 1882, had to look after these structures generally referred to as barrages , they adopted the term in their language and continued to use it for similar structures built by themselves across the Nile (Zefta Barrage and Assiut Barrage , both completed in 1902). Since the British in the Egyptian Public Works Department kept close relations to their counterparts in British India ,

390-431: The case of dam failure. New designs have been made that are able to sustain greater amounts of water. An improved wedge-shaped block technology was developed by Rafael Moran and Miguel Toledo. The new structure is able to withstand severe flooding and uses less materials, reducing the production cost. Dam construction has several effects on the economy and the environment . Specifically, there are several ways in which

416-442: The depth of 4 to 6 metres (12 to 20 ft) From the counterpart rupee fund created through supplies of wheat and other materials from Canada for use in India, Canada devoted those rupees to the further development of the Mayurakshi dam project. The Massanjore dam (also called Canada Dam), across the Mayurakshi, was commissioned in 1955. It was formally inaugurated by Lester B. Pearson, Foreign Minister of Canada. Unfortunately,

442-412: The environment can be affected by dam construction. Species richness is usually measured to determine the effect of a dam on the ecosystem surrounding it. To observe the species richness, scientists collect data on the fish and animal populations before and after construction of the dam. With that data, they are able to see how the population size increased or decreased. In some cases, it was found that

468-438: The foundation is strong enough to support the dam and has low possibility of failing. When dams are created, they are given a safety rating depending on the type of dam, location, and the possible effects in case of failure. The ratings are from one to five, five having the highest danger rating. The rating of five would be given to dams built with a town or city downstream, which would have higher possibility of injury to people in

494-400: The four decades between 1960 and 2000 only five years could be identified as flood-free years, when only less than 500 square kilometres (190 sq mi) of area were inundated. After major floods in 1978, West Bengal suffered consecutively in 1998, 1999 and 2000. In 1978, seventy two hours of continuous and concentrated rainfall over the western river basin areas of the Bhagirathi viz. from

520-435: The newly-built dam. It has been shown that dams can have an effect on the migration of fish, leading to less reproduction. There are many small factors that can have a relatively large effect on the river ecosystems, such as species richness, water volume and nutrient levels. Different experiments have been done that looked into each of these individually and were able to determine why some dams cause such effects. While there

546-492: The physical dam inhibiting their migration and reproduction paths. Barrage dams control the amount of water going through them, leading to differences in the amount of water upstream and downstream from the dam. This discrepancy has different effects on different species native to the area. While there can be reduced flow downstream, there can also be problems upstream. Dams can have buildup of pressure that fish are not accustomed to, and they migrate further upstream, causing part of

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572-505: The provision of relief to the people. Major embankments line long stretches of such rivers as Mayurakshi, Dwarka, Brahmani and Ajay Massanjore dam has ensured irrigation of some 2,400 square kilometres (600,000 acres) of land with an estimated resultant increased yield of approximately 400,000 tons of food annually and generation of 2,000 kW of electric power. The Mayurakshi is fed by tributaries Brahmani , Dwaraka , Bakreshwar and Kopai . Barrage (dam) A barrage

598-473: The river to have reduced population sizes. Although there are environmental effects that come with building new dams, there are also economic benefits from a dam. Without dams, it would be much harder to farm and grow livestock. The irrigation technology that comes with building a dam can exceed the risk factor. According to the World Commission on Dams , a key difference between a dam and a barrage

624-412: The species richness was less downstream from a dam compared to further upstream. Inhibiting the volume of water was shown to be detrimental to species diversity and richness. Also, at the entrance of dams, there are fewer nutrients due to the high-water flow reducing the ecosystem's reproduction standard. Along with species richness, plankton diversity can be an indicator of the ecosystem's ability to handle

650-455: The storage of water during the annual flood period of the Nile in order to supplement the natural flow of the river during the low-water period; a "barrage" merely raises the river or canal level, when necessary, to the height required for adequate flow into the canals that take off above it. Barrages are usually larger than the headworks of irrigation and navigation canals, with which they are associated. Barrages that are commonly used to dam

676-496: Was a high flood which it is said, in some places swept off villages, inhabitants and cattle, the crops on the ground, with everything that was moveable." O'Malley also recorded that "in 1806 the Mayurakshi and Ajay had a sudden extraordinary rise and floods washed away whole villages." In September 1902, because of heavy rains the Brahmani and the Mayurakshi overflowed their banks and inundated the surrounding country in some places to

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