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Otori Dam
The is a concrete arch-gravity dam on the Tadami River, southwest of Tadami in Fukushima Prefecture, Japan. The primary purpose of the dam is hydroelectric power generation and it supports a 182 MW power station. The power station contains two Kaplan turbine-generators. Unit 1 (95 MW) was commissioned on 20 November 1963 while Unit 2 (87 MW) was commissioned on 7 June 2003 as part of a power plant expansion project that included an additional 200 MW generator at Okutadami Dam upstream. The dam is tall and long. Its reservoir has a capacity of which is active (or "useful") for power generation. The reservoir has a catchment area of and surface area of . Of the two generators, Unit 1 has a maximum effective hydraulic head of and Unit 2 is afforded . The design flood discharge of the dam is and its service spillway is controlled by three tainter gates. See also *List of power stations in Japan *Tagokura Dam Tagokura Dam (田子倉ダム) is a gravity dam, on the Tad ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tadami, Fukushima
is a town located in Fukushima Prefecture, Japan. , the town has an estimated population of 4,117 in 1749 households, of which 45.88% were classified as "elderly households" The town had a population density of 5.5 persons per km2. The total area of the town was . Tadami is famous locally for its own Snow Festival, where huge sculptures and replicas of monuments are cut out of Tadami's abundant snow. Geography Tadami is located in the mountainous western portion of the Aizu region of Fukushima Prefecture, bordered Niigata Prefecture to the west. Mountains * Aizuasahidake * Asakusadake * Gamoudake Rivers * Tadami River * Ina River Lakes * Lake Tadami * Lake Tagokura Neighboring municipalities *Fukushima Prefecture ** Kaneyama ** Shōwa ** Minamiaizu ** Hinoemata *Niigata Prefecture ** Uonuma ** Sanjō ** Aga Climate Tadami has a Humid continental climate (Köppen ''Dfa'') characterized by warm summers and cold winters with heavy snowfall. The average annual temperature ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydraulic Head
Hydraulic head or piezometric head is a specific measurement of liquid pressure above a vertical datum., 410 pages. See pp. 43–44., 650 pages. See p. 22. It is usually measured as a liquid surface elevation, expressed in units of length, at the entrance (or bottom) of a piezometer. In an aquifer, it can be calculated from the depth to water in a piezometric well (a specialized water well), and given information of the piezometer's elevation and screen depth. Hydraulic head can similarly be measured in a column of water using a standpipe piezometer by measuring the height of the water surface in the tube relative to a common datum. The hydraulic head can be used to determine a ''hydraulic gradient'' between two or more points. "Head" in fluid dynamics In fluid dynamics, ''head'' is a concept that relates the energy in an incompressible fluid to the height of an equivalent static column of that fluid. From Bernoulli's principle, the total energy at a given point in a fluid i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dams On The Tadami River
A dam is a barrier that stops or restricts the flow of surface water or underground streams. Reservoirs created by dams not only suppress floods but also provide water for activities such as irrigation, tap water, human consumption, Industrial water, industrial use, aquaculture, and navigability. Hydropower is often used in conjunction with dams to generate electricity. A dam can also be used to collect or store water which can be evenly distributed between locations. Dams generally serve the primary purpose of retaining water, while other structures such as floodgates or levees (also known as Dike (construction), dikes) are used to manage or prevent water flow into specific land regions. The earliest known dam is the Jawa Dam (Jordan), Jawa Dam in Jordan, dating to 3,000 BC. The word ''dam'' can be traced back to Middle English, and before that, from Middle Dutch, as seen in the names of many old cities, such as Amsterdam and Rotterdam. History Ancient dams Early dam build ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dams Completed In 1963
A dam is a barrier that stops or restricts the flow of surface water or underground streams. Reservoirs created by dams not only suppress floods but also provide water for activities such as irrigation, human consumption, industrial use, aquaculture, and navigability. Hydropower is often used in conjunction with dams to generate electricity. A dam can also be used to collect or store water which can be evenly distributed between locations. Dams generally serve the primary purpose of retaining water, while other structures such as floodgates or levees (also known as dikes) are used to manage or prevent water flow into specific land regions. The earliest known dam is the Jawa Dam in Jordan, dating to 3,000 BC. The word ''dam'' can be traced back to Middle English, and before that, from Middle Dutch, as seen in the names of many old cities, such as Amsterdam and Rotterdam. History Ancient dams Early dam building took place in Mesopotamia and the Middle East. Dams were used ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydroelectric Power Stations In Japan
Hydroelectricity, or hydroelectric power, is electricity generated from hydropower (water power). Hydropower supplies one sixth of the world's electricity, almost 4500 TWh in 2020, which is more than all other renewable sources combined and also more than nuclear power. Hydropower can provide large amounts of low-carbon electricity on demand, making it a key element for creating secure and clean electricity supply systems. A hydroelectric power station that has a dam and reservoir is a flexible source, since the amount of electricity produced can be increased or decreased in seconds or minutes in response to varying electricity demand. Once a hydroelectric complex is constructed, it produces no direct waste, and almost always emits considerably less greenhouse gas than fossil fuel-powered energy plants. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dams In Fukushima Prefecture
A dam is a barrier that stops or restricts the flow of surface water or underground streams. Reservoirs created by dams not only suppress floods but also provide water for activities such as irrigation, human consumption, industrial use, aquaculture, and navigability. Hydropower is often used in conjunction with dams to generate electricity. A dam can also be used to collect or store water which can be evenly distributed between locations. Dams generally serve the primary purpose of retaining water, while other structures such as floodgates or levees (also known as dikes) are used to manage or prevent water flow into specific land regions. The earliest known dam is the Jawa Dam in Jordan, dating to 3,000 BC. The word ''dam'' can be traced back to Middle English, and before that, from Middle Dutch, as seen in the names of many old cities, such as Amsterdam and Rotterdam. History Ancient dams Early dam building took place in Mesopotamia and the Middle East. Dams were used ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tagokura Dam
Tagokura Dam (田子倉ダム) is a gravity dam, on the Tadami River in the Fukushima Prefecture of Japan. It is owned and operated by the Electric Power Development Company (J-Power). The lake which it impounds is known as Lake Tagokura. The dam is long and high. It supplies a 380 MW hydroelectric power station that is also owned by J-Power.Lake Tagokura has a surface area of and a capacity of . The catchment area is . Construction of the dam started in 1953 and it was completed in 1959. In order to facilitate the movement of construction material, the existing railway from to was extended to , and a light railway was built from there to the construction site. After the dam was completed, the light railway was upgraded and extended to link to an existing line at , thus creating today's Tadami Line. See also *Tadami Dam Tadami Dam is a rock-fill embankment dam on the Tadami River The is a major tributary of the Agano River in Japan. Its basin covers and its mai ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Power Stations In Japan ...
This page is a list of power stations in Japan that are publicly or privately owned. List Former power station * Senju Thermal Power Station See also *Electricity sector in Japan *Energy in Japan *List of largest power stations in the world References {{Economy of Japan Japan Power stations Power stations A power station, also referred to as a power plant and sometimes generating station or generating plant, is an industrial facility for the generation of electric power. Power stations are generally connected to an electrical grid. Many pow ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tainter Gate
The Tainter gate is a type of radial arm floodgate used in dams and canal locks to control water flow. It is named for Wisconsin structural engineer Jeremiah Burnham Tainter. A side view of a Tainter gate resembles a slice of pie with the curved part of the piece facing the source or upper pool of water and the tip pointing toward the destination or lower pool. The curved face or skinplate of the gate takes the form of a wedge section of cylinder. The straight sides of the pie shape, the trunnion arms, extend back from each end of the cylinder section and meet at a trunnion which serves as a pivot point when the gate rotates. Pressure forces on a submerged body act perpendicular to the body's surface. The design of the Tainter gate results in every pressure force acting through the centre of the imaginary circle of which the gate is a section, so that all resulting pressure force acts through the pivot point of the gate, making construction and design easier. When a Tain ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Drainage Basin
A drainage basin is an area of land where all flowing surface water converges to a single point, such as a river mouth, or flows into another body of water, such as a lake or ocean. A basin is separated from adjacent basins by a perimeter, the '' drainage divide'', made up of a succession of elevated features, such as ridges and hills. A basin may consist of smaller basins that merge at river confluences, forming a hierarchical pattern. Other terms for a drainage basin are catchment area, catchment basin, drainage area, river basin, water basin, and impluvium. In North America, they are commonly called a watershed, though in other English-speaking places, "watershed" is used only in its original sense, that of a drainage divide. In a closed drainage basin, or endorheic basin, the water converges to a single point inside the basin, known as a sink, which may be a permanent lake, a dry lake, or a point where surface water is lost underground. Drainage basins are similar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electric Power Development Company
The , operating under the brand name J-POWER, formerly , is an electric utility in Japan. It mainly produces electricity from coal and hydroelectric power stations. It also has a few wind farms and is currently building a nuclear plant in Ohma, Aomori prefecture, that is scheduled to begin operations in November 2014. J-Power is the sole operator of the transmission lines connecting the four main islands of Japan. History After World War II, as a part of many changes implemented, the Supreme Commander of the Allied Powers ordered the dismantling of , which at the time provided electricity to all of Japan with a semi-governmental status. This was broken up into a number of utilities, which have become Japan's modern electric utility companies. However, in the battered state of post-war Japan, there were few investors out there to put money in these new companies, and certainly not enough to allow for sufficient R&D of power sources that Japan needed to keep up with the deman ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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