Shiogō Dam | |
---|---|
Official name | 塩郷ダム |
Location | Shizuoka Prefecture, Japan |
Coordinates | 35°00′05″N138°05′15″E / 35.00139°N 138.08750°E Coordinates: 35°00′05″N138°05′15″E / 35.00139°N 138.08750°E |
Construction began | 1958 |
Opening date | 1961 |
Operator(s) | Chubu Electric Power |
Dam and spillways | |
Impounds | Ōi River |
Height | 3.2 meters |
Length | 146 meters |
Reservoir | |
Total capacity | NA |
Catchment area | NA |
Surface area | NA |
The Shiogō Dam(塩郷ダム Shiogō Damu) is a dam on the main stream of the Ōi River, in the town of Kawanehon, Haibara District, Shizuoka Prefecture on the island of Honshū, Japan.
A dam is a barrier that stops or restricts the flow of 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 water or for storage of 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 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 Ōi River is a river in Shizuoka Prefecture, Japan.
Haibara is a rural district located in Shizuoka Prefecture, Japan.
The potential of the Ōi River valley for hydroelectric power development was realized by the Meiji government at the start of the 20th century. The Ōi River was characterized by a high volume of flow and a fast current. Its mountainous upper reaches and tributaries were areas of steep valleys and abundant rainfall, and were sparsely populated. From the 1930s through the 1960s, numerous concrete gravity dams had been constructed on the main flow of the Ōi River, and to its various tributary streams.
A gravity dam is a dam constructed from concrete or stone masonry and designed to hold back water by primarily using the weight of the material alone to resist the horizontal pressure of water pushing against it. Gravity dams are designed so that each section of the dam is stable, independent of any other dam section.
A tributary or affluent is a stream or river that flows into a larger stream or main stem river or a lake. A tributary does not flow directly into a sea or ocean. Tributaries and the main stem river drain the surrounding drainage basin of its surface water and groundwater, leading the water out into an ocean.
The Shiogō Dam and neighboring Sasamagawa Dam were constructed to provide water for the 58,000 KW Kawaguchi Hydroelectric Plant built by the Shimada city government. Construction work began in 1958 and was completed by 1961. Although styled as a "dam", the structure is in fact a weir, as it does not meet the 15-meter height stipulated in Japanese construction regulations to qualify as a "dam".
The Sasamagawa Dam is a dam on the Sasama River, a tributary of the Ōi River, located on the border of the city of Shimada and the town of Kawanehon, Shizuoka Prefecture on the island of Honshū, Japan.
Shimada is a city located in Shizuoka Prefecture, Japan.
A weir or low head dam is a barrier across the horizontal width of a river that alters the flow characteristics of water and usually results in a change in the height of the river level. There are many designs of weir, but commonly water flows freely over the top of the weir crest before cascading down to a lower level.
The Shiogō Dam was built in an area where the Ōi River made a number of turns over swift rapids. The area was a popular fishery for ayu and Japanese dace, which the dam replaced with an area of stagnant, algae-polluted water with an offensive smell. The dam also reduced the amount of sand and silt reaching the mouth of the Ōi River, thus further contributing to shoreline erosion. Legal efforts by local municipalities and landowners to recover water rights over the Ōi River and force the dismantling of the dam have consistently failed in courts.
The ayu or sweetfish, Plecoglossus altivelis, is a species of fish. It is the only species in the genus Plecoglossus and family Plecoglossidae. It is a relative of the smelts and other fish in the order Osmeriformes.
The Vakhsh (River), also known as the Surkhob (Сурхоб), in north-central Tajikistan, and the Kyzyl-Suu, in Kyrgyzstan, is a Central Asian river, and one of the main rivers of Tajikistan. It is a tributary of the Amu Darya river.
The Gandhi Sagar Dam is one of the four major dams built on India's Chambal River. The dam is located in the Mandsaur, Neemuch districts of the state of Madhya Pradesh. It is a masonry gravity dam, standing 62.17 metres (204.0 ft) high, with a gross storage capacity of 7.322 billion cubic metres from a catchment area of 22,584 km2 (8,720 sq mi). The dam's foundation stone was laid by Prime Minister of India Pandit Jawaharlal Nehru on 7 March 1954, and construction of the main dam was done by leading contractor Dwarka Das Agrawal & Associates and was completed in 1960. Additional dam structures were completed downstream in the 1970s.
The Tenryū River is a river in central Honshū, Japan. With a length of 213 km (132 mi), it is Japan's ninth longest river.
The Barakar River is the main tributary of the Damodar River in eastern India. Originating near Padma in Hazaribagh district of Jharkhand it flows for 225 kilometres (140 mi) across the northern part of the Chota Nagpur Plateau, mostly in a west to east direction, before joining the Damodar near Dishergarh in Asansol, Bardhaman district of West Bengal. It has a catchment area of 6,159 square kilometres (2,378 sq mi). The main tributaries, Barsoti and Usri, flow in from the south and north respectively. Apart from the two main tributaries some fifteen medium or small streams join it.
The Sakuma Dam is a dam on the Tenryū River, located on the border of Toyone, Kitashitara District, Aichi Prefecture on the island of Honshū, Japan. It is one of the tallest dams in Japan and supports a 350 MW hydroelectric power station. Nearby a frequency converter station is installed, allowing interchange of power between Japan's 50 Hz and 60 Hz AC networks.
The Shintoyone Dam (新豊根ダム) is a multipurpose dam in the village of Toyone in the Aichi Prefecture of Japan.
The Tashiro Dam is a dam on the Ōi River in Aoi-ku, Shizuoka, Shizuoka Prefecture on the island of Honshū, Japan. It was the first concrete gravity dam to be constructed on the Ōi River, and has a hydroelectric power generating station owned by the Tokyo Electric Power Company.
The Ōigawa Dam is a dam on the Ōi River in Haibara District, Kawanehon, Shizuoka Prefecture on the island of Honshū, Japan. It has a hydroelectric power generating station owned by the Chubu Electric Power Company.
The Hatanagi-I is a dam on the Ōi River in Aoi-ku, Shizuoka, Shizuoka Prefecture on the island of Honshū, Japan. With a height of 125 metres (410 ft), it is the tallest hollow-core concrete gravity dam in the world. It has a hydroelectric power generating station owned by the Chubu Electric Power Company. It supports a 137 megawatts (184,000 hp) pumped-storage hydroelectric power station.
The Hatanagi-II is a dam on the Ōi River in Aoi-ku, Shizuoka, Shizuoka Prefecture on the island of Honshū, Japan. A hollow-core concrete gravity dam, it has a hydroelectric power generating station owned by the Chubu Electric Power Company.
The Ikawa Dam is a dam on the Ōi River in Aoi-ku, Shizuoka, Shizuoka Prefecture on the island of Honshū, Japan. It was the first hollow core concrete gravity dam to be constructed in Japan, and has a hydroelectric power generating station owned by the Chubu Electric Power Company.
The Senzu Dam is a dam on the Sumata River, a tributary of the Ōi River, located in Kawanehon Town, Haibara District, Shizuoka Prefecture on the island of Honshū, Japan.
The Nagashima Dam is a dam on the Ōi River, located in Kawanehon Town, Haibara District, Shizuoka Prefecture on the island of Honshū, Japan.
The Funagira Dam is a dam on the Tenryū River, located in Tenryū district, Hamamatsu city, Shizuoka Prefecture on the island of Honshū, Japan.
The Misakubo Dam is a dam on the Tonaka River, a tributary stream of the Misakubo River, itself a tributary of the Ōi River, located in Tenyrū-ku Hamamatsu, Shizuoka Prefecture, on the island of Honshū, Japan.
The Akiba Dam is a dam on the Tenryū River, located in Tenryū-ku, Hamamatsu, Shizuoka Prefecture on the island of Honshū, Japan.
The Miyagase Dam is a dam on the Nakatsu River, a main tributary of the Sagami River in Aikō District, Kanagawa Prefecture, Japan. It straddles the border between the village of Kiyokawa, town of Aikawa and the former town of Tsukui.
Ohashi Dam is a dam built on the Yoshino River in Agawa District, Kōchi Prefecture of Japan. This concrete dam 73.5m high. It is a hydroelectric dam of the Shikoku Electric Power Company. It supplies water to the company's hydroelectric plant, Ohashi Power Station, which can produce up to 5,500kW. It is the lower reservoir for a pumped-storage hydroelectric plant. The upper reservoir being Inamura Dam. Water flowing between these two can produce up to 615MW. It is a public works which The Japan Society of Civil Engineers has recommended as a site of Public Works Heritage.
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