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List Of Tidal Barrages
A tidal barrage is an artificial obstruction at the mouth of a tidal watercourse, in contrast to a normal barrage along a river's inland course. Purpose The common primary functions of a barrage are: * Increase the depth of a river (similar to a weir) * Maintain a separation between fresh and salt water * Reduce the risk of tidal flooding up the river Secondary functions may include: * Tidal power generation * Artificial whitewater leisure centres * Form a Coastal reservoir Notable barrages * Cardiff Bay Barrage * Goolwa Barrages * Marina Barrage * Prakasham Barrage * Swansea barrage * Tees Barrage * West Sea Barrage {{Gallery, height=150, width=150, lines=4 , File:NK-Hafen Nampo.jpg, Partial view of the West Sea Barrage near Namp'o, North Korea in 1989 , File:Cardiff Bay Barrage lock.jpg, Lock in Cardiff Bay Barrage , File:Marina Barrage Bridge.jpg, Marina barrage bridge Power Station Barrages * Rance tidal power plant * Annapolis Royal Generating Station (Decommissi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nampho
Nampo (North Korean official spelling: Nampho; ), also spelled Namp'o, is the second largest city by population and an important seaport in North Korea, which lies on the northern shore of the Taedong River, 15 km east of the river's mouth. Formerly known as Chinnamp'o, it was a provincial-level "Directly Governed City" ("Chikhalsi") from 1980 to 2004, and was designated a "Special City" ("T'ŭkpyŏlsi", 특별시; 特別市) in 2010. Nampo is approximately 50 km southwest of Pyongyang, at the mouth of the Taedong River. Since North Korean independence, the city has developed a wide range of industry and has seen significant recent redevelopment. History Before formation of North Korea The city belonged to Gojoseon until the Three Kingdoms era, when it was taken by Goguryeo. During this time, the city was part of Sogyong (now Pyongyang) until the Goryeo dynasty, when in the aftermath of the Myocheong rebellion, Sogyong was split into six counties, of which curre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thames Barrier
The Thames Barrier is a retractable barrier system built to protect the floodplain of most of Greater London from exceptionally high tides and storm surges moving up from the North Sea. It has been operational since 1982. When needed, it is closed (raised) during high tide; at low tide, it can be opened to restore the river's flow towards the sea. Built about east of the Isle of Dogs, its northern bank is in Silvertown in the London Borough of Newham and its southern bank is in the New Charlton area of the Royal Borough of Greenwich. History Background Flooding in London has been a problem since Roman times. In 1954, the Waverley Committee, established to investigate the serious North Sea flood of 1953 which affected parts of the Thames Estuary and parts of London, recommended that "as an alternative to raising the banks, the possibility and cost of erecting a structure across the Thames which could be closed in a surge should be urgently investigated". A number of d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Floodgate
Floodgates, also called stop gates, are adjustable gates used to control water flow in flood barriers, reservoir, river, stream, or levee systems. They may be designed to set spillway crest heights in dams, to adjust flow rates in sluices and canals, or they may be designed to stop water flow entirely as part of a levee or storm surge system. Since most of these devices operate by controlling the water surface elevation being stored or routed, they are also known as crest gates. In the case of flood bypass systems, floodgates sometimes are also used to lower the water levels in a main river or canal channels by allowing more water to flow into a flood bypass or detention basin when the main river or canal is approaching a flood stage. Types Valves Valves used in floodgate applications have a variety of design requirements and are usually located at the base of dams. Often, the most important requirement (besides regulating flow) is energy dissipation. Since water is very he ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mersey Estuary
The River Mersey () is in North West England. Its name derives from Old English and means "boundary river", possibly referring to its having been a border between the ancient kingdoms of Mercia and Northumbria. For centuries it has formed part of the boundary between the historic counties of Lancashire and Cheshire. The Mersey starts at the confluence of the River Tame and River Goyt in Stockport. It flows westwards through south Manchester, then into the Manchester Ship Canal at Irlam, becoming a part of the canal and maintaining its water levels. After it exits the canal, flowing towards Warrington where it widens. It then narrows as it passes between Runcorn and Widnes. From Runcorn the river widens into a large estuary, which is across at its widest point near Ellesmere Port. The course of the river then turns northwards as the estuary narrows between Liverpool and Birkenhead on the Wirral Peninsula to the west, and empties into Liverpool Bay. In total the river flows . ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mersey Barrage
The Mersey Barrage is a proposed scheme for building a tidal barrage across the Mersey Estuary. In December 2022, the Liverpool City Region mayor announced cooperation between the City Region and K-water of South Korea, who built and operates the Sihwa Lake Tidal Power Station, in order to construct a similar operation on the River Mersey. History The River Mersey is considered to be a suitable source of marine renewable energy in the United Kingdom, due to its strong current and tidal range of up to . The tidal range is the second highest in the United Kingdom. A Department of the Environment and UKAEA report in 1984 identified a site between New Brighton and Brocklebank Dock for a Mersey barrage. A 2006 study by Peel Holdings and the North West Development Agency identified the River Mersey as having considerable potential for tidal power. A pilot project, using a water wheel to harness tidal power, was considered at Bootle docks. At the same time, a tidal barrage plan was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
England
England is a country that is part of the United Kingdom. It shares land borders with Wales to its west and Scotland to its north. The Irish Sea lies northwest and the Celtic Sea to the southwest. It is separated from continental Europe by the North Sea to the east and the English Channel to the south. The country covers five-eighths of the island of Great Britain, which lies in the North Atlantic, and includes over 100 smaller islands, such as the Isles of Scilly and the Isle of Wight. The area now called England was first inhabited by modern humans during the Upper Paleolithic period, but takes its name from the Angles, a Germanic tribe deriving its name from the Anglia peninsula, who settled during the 5th and 6th centuries. England became a unified state in the 10th century and has had a significant cultural and legal impact on the wider world since the Age of Discovery, which began during the 15th century. The English language, the Anglican Church, and Eng ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wales
Wales ( cy, Cymru ) is a Countries of the United Kingdom, country that is part of the United Kingdom. It is bordered by England to the Wales–England border, east, the Irish Sea to the north and west, the Celtic Sea to the south west and the Bristol Channel to the south. It had a population in 2021 of 3,107,500 and has a total area of . Wales has over of coastline and is largely mountainous with its higher peaks in the north and central areas, including Snowdon (), its highest summit. The country lies within the Temperateness, north temperate zone and has a changeable, maritime climate. The capital and largest city is Cardiff. Welsh national identity emerged among the Celtic Britons after the Roman withdrawal from Britain in the 5th century, and Wales was formed as a Kingdom of Wales, kingdom under Gruffydd ap Llywelyn in 1055. Wales is regarded as one of the Celtic nations. The Conquest of Wales by Edward I, conquest of Wales by Edward I of England was completed by 1283, th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
River Severn
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Severn Barrage
The Severn Barrage is any of a range of ideas for building a barrage from the English coast to the Welsh coast over the Severn tidal estuary. Ideas for damming or barraging the Severn estuary (and Bristol Channel) have existed since the 19th century. The building of such a barrage would constitute an engineering project comparable with some of the world's biggest. The purposes of such a project have typically been one or several of: transport links, flood protection, harbour creation, or tidal power generation. In recent decades it is the latter that has grown to be the primary focus for barrage ideas, and the others are now seen as useful side-effects. Following the Severn Tidal Power Feasibility Study (2008–10), the British government concluded that there was no strategic case for building a barrage but to continue to investigate emerging technologies. In June 2013 the Energy and Climate Change Select Committee published its findings after an eight-month study of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jiangxia Tidal Power Station
The Jiangxia Tidal Power Station (江厦潮汐电站) is the fourth largest tidal power station in the world, located in Wuyantou, Wenling City, Zhejiang Province, China. Although the proposed design for the facility was 3,000 kW, the current installed capacity is 3,200 kW, generated from one unit of 500 kW, one unit of 600 kW, and three units of 700 kW, totalling the installed capacity to 3,200 kW. Proposals were made to install a sixth 700 kW unit, but this has not yet been installed. The facility generates up to 6.5 GWh of power annually. This facility also hosts a 40 kW solar PV power installation with an estimated 45,000 kWh annual production capacity. This system is composed of 216 pieces of 186 W monocrystalline solar modules manufactured by Perlight Solar. The power station feeds the energy demand of small villages at a distance, through a 35- kV transmission line. The maximum tidal range in the estuary is . Now it is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kislaya Guba Tidal Power Station
The Kislaya Guba Tidal Power Station is an experimental project in Kislaya Guba, Russia. The station is the world's 4th largest tidal power plant in operation since the Annapolis Royal Generating Station ceased operation. With an output capacity of . Station began operating in 1968, but was later shut down for 10 years until December 2004, when funding resumed. The old French-built generation unit was dismantled. In 2004 was installed first new generation unit, and in 2007 – second, . The site was originally chosen because the long and deep fjord had a fairly narrow outlet to the sea which could easily be dammed for the project. There are plans for two larger scale projects based on this design near Mezen, on the White Sea and Tugur on the Sea of Okhotsk. See also * List of largest power stations in the world * List of power stations in Russia * List of tidal power stations This article lists most power stations that run on tidal power. Since tidal stream generato ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
