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Cowlitz Falls Dam
Cowlitz Falls Dam is a 70 megawatt hydroelectric dam in Lewis County, Washington. It was constructed in the early 1990s and completed in 1994. The dam is high and wide. Its reservoir, Lake Scanewa, is located at the confluence of the Cowlitz River and Cispus River downstream of Randle, Washington with a surface area of about 700 acres. The Cowlitz Falls Project impounds the Cowlitz River and produces on average 260 gigawatthours annually for the local public utility, the Lewis County Public Utility District, or about one-third of its annual electrical needs. The facility was developed jointly with the Bonneville Power Administration, and the BPA bears the direct cost of operating and maintaining the dam. See also *List of dams in the Columbia River watershed There are more than 60 dams in the Columbia River watershed in the United States and Canada. Tributaries of the Columbia River and their dammed tributaries, as well as the main stem itself, each have their own lis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Megawatt
The watt (symbol: W) is the unit of Power (physics), power or radiant flux in the International System of Units, International System of Units (SI), equal to 1 joule per second or 1 kg⋅m2⋅s−3. It is used to quantification (science), quantify the rate of Energy transformation, energy transfer. The watt is named after James Watt (1736–1819), an 18th-century Scottish people, Scottish invention, inventor, mechanical engineer, and chemist who improved the Newcomen steam engine, Newcomen engine with his own Watt steam engine, steam engine in 1776. Watt's invention was fundamental for the Industrial Revolution. Overview When an object's velocity is held constant at one metre per second against a constant opposing force of one Newton (unit), newton, the rate at which Work (physics), work is done is one watt. : \mathrm In terms of electromagnetism, one watt is the rate at which electrical work is performed when a current of one ampere (A) flows across an electrical potentia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydroelectricity
Hydroelectricity, or hydroelectric power, is Electricity generation, 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 energy, renewable sources combined and also more than nuclear power. Hydropower can provide large amounts of Low-carbon power, 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] |
Lewis County, Washington
Lewis County is a county in the U.S. state of Washington. As of the 2020 census, the county's population was 82,149. The county seat is Chehalis, and its largest city is Centralia. Lewis County comprises the Centralia, WA Micropolitan Statistical Area, which is also included in the Seattle- Tacoma, WA Combined Statistical Area. History The county was created as Vancouver County on December 19, 1845, by the Provisional Government of Oregon, named for George Vancouver. In 1849, the county name was changed, to honor Meriwether Lewis. At the time, the county included all U.S. lands north of the Cowlitz River, including much of the Puget Sound region and British Columbia. The county received official recognition as a "Purple Heart County" in November 2019. Geography and natural features According to the United States Census Bureau, the county has a total area of , of which is land and (1.4%) is water. One of the world's tallest Douglas fir trees was in the town of Mineral withi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cowlitz River
The Cowlitz River is a river in the state of Washington in the United States, a tributary of the Columbia River. Its tributaries drain a large region including the slopes of Mount Rainier, Mount Adams, and Mount St. Helens. The Cowlitz has a drainage basin, located between the Cascade Range in eastern Lewis County, Washington and the cities of Kelso and Longview. The river is roughly long, not counting tributaries. Major tributaries of the Cowlitz River include the Cispus River and the Toutle River, which was overtaken by volcanic mudflows ( lahars) during the May 1980 eruption of Mount St. Helens. When the smelt spawn in the Cowlitz River, the gulls go into a feeding frenzy that lasts for weeks. Kelso, Washington is known as the "Smelt Capital of the World". Dams The Cowlitz River has three major hydroelectric dams, with several small-scale hydropower and sediment retention structures within the Cowlitz Basin. The Cowlitz Falls Project is a 70 megawatt hydroelectric ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cispus River
The Cispus River is about long and flows into the Cowlitz River at Lake Scanewa in the Cascade Range of Washington. Its tributaries drain most of south-central and southeastern Lewis County, extreme northeast Skamania County, and some of western Yakima County. Its main stem begins in Lewis County in a high, glacial valley to the north of Snowgrass Flats in the Goat Rocks Wilderness, located on the Gifford Pinchot National Forest. From here the river flows in a southwesterly direction and takes on the waters of several important headwater tributaries such as Walupt Creek. About from its mouth, the Cispus River receives Muddy Fork from the left. Muddy Fork starts from this junction, at Mount Adams' Lava Glacier and is named for the glacial debris and silt in the water which give the river a muddy appearance. The Cispus River flows through a heavily forested valley, much of the forest regrown after the Cispus Burn, which occurred the first decade of the 20th century and consu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Randle, Washington
Randle is a small town in eastern Lewis County, Washington, United States. Randle is located on U.S. Route 12 and is notable as the northeastern access point to the Mount St. Helens Windy Ridge viewpoint, by way of forest service roads that cut through the Gifford Pinchot National Forest. Randle is located right next to the Cowlitz River and is about north of the Cispus River, a tributary of the Cowlitz. The rural area surrounding Randle is known locally as the "Big Bottom Valley," which is reflective of the fact that the valley floor in which the Cowlitz River winds westward through Randle is "big"—flat, fertile land that is, in places, more than wide. History William Joerk explored in the area around 1882. Randle was first settled in 1886 by James L. Randle. The townsite was founded in 1902. The White Pass High School was built in 1951. In 2011, it was demolished and built into a new school. Geography Randle is the center of the White Pass School District, which, in addi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Public Utility District
A district is a type of administrative division that, in some countries, is managed by the local government. Across the world, areas known as "districts" vary greatly in size, spanning regions or counties, several municipalities, subdivisions of municipalities, school district, or political district. By country/region Afghanistan In Afghanistan, a district ( Persian ps, ولسوالۍ ) is a subdivision of a province. There are almost 400 districts in the country. Australia Electoral districts are used in state elections. Districts were also used in several states as cadastral units for land titles. Some were used as squatting districts. New South Wales had several different types of districts used in the 21st century. Austria In Austria, the word is used with different meanings in three different contexts: * Some of the tasks of the administrative branch of the national and regional governments are fulfilled by the 95 district administrative offices (). The area a dis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bonneville Power Administration
The Bonneville Power Administration (BPA) is an American federal agency operating in the Pacific Northwest. BPA was created by an act of Congress in 1937 to market electric power from the Bonneville Dam located on the Columbia River and to construct facilities necessary to transmit that power. Congress has since designated Bonneville to be the marketing agent for power from all of the federally owned hydroelectric projects in the Pacific Northwest. Bonneville is one of four regional Federal power marketing agencies within the U.S. Department of Energy (DOE). Operations The power generated on BPA's grid is sold to public utilities, private utilities, and industry on the grid. The excess is sold to other grids in Canada, California and other regions. Because BPA is a public entity, it does not make a profit on power sales or from providing transmission services. BPA also coordinates with the U.S. Army Corps of Engineers and the U.S. Bureau of Reclamation to regulate flow of wa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Dams In The Columbia River Watershed
There are more than 60 dams in the Columbia River watershed in the United States and Canada. Tributaries of the Columbia River and their dammed tributaries, as well as the main stem itself, each have their own list below. The dams are listed in the order as they are found from source to terminus. Many of the dams in the Columbia River watershed were not created for the specific purposes of water storage or flood protection. Instead, the primary purpose of many of these dams is to produce hydroelectricity. As can be seen in the lists, these dams provide many tens of gigawatts of power. Major dam construction began in the early 20th century and picked up the pace after the Columbia River Treaty in the 1960s, by the mid 1980s all the big dams were finished. Including just the dams listed below, there are 60 dams in the watershed, with 14 on the Columbia, 20 on the Snake, seven on the Kootenay, seven on the Pend Oreille / Clark, two on the Flathead, eight on the Yakima, and t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dams In Washington (state)
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 use ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reservoirs In Washington (state)
A reservoir (; from French ''réservoir'' ) is an enlarged lake behind a dam. Such a dam may be either artificial, built to store fresh water or it may be a natural formation. Reservoirs can be created in a number of ways, including controlling a watercourse that drains an existing body of water, interrupting a watercourse to form an embayment within it, through excavation, or building any number of retaining walls or levees. In other contexts, "reservoirs" may refer to storage spaces for various fluids; they may hold liquids or gasses, including hydrocarbons. ''Tank reservoirs'' store these in ground-level, elevated, or buried tanks. Tank reservoirs for water are also called cisterns. Most underground reservoirs are used to store liquids, principally either water or petroleum. Types Dammed valleys Dammed reservoirs are artificial lakes created and controlled by a dam constructed across a valley, and rely on the natural topography to provide most of the basin of the re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Local Public Utility Dams
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