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Toutle River Sediment Retention Structure
The Sediment Retention Structure is an earthen dam, long and high, on the North Fork Toutle River in the U.S. state of Washington. Completed by the United States Army Corps of Engineers in 1989, it is meant to prevent sediment from the 1980 eruption of Mount St. Helens from increasing flood risks along the Toutle and Cowlitz rivers. The Corps initially expected the basin behind the dam to be filled by 2035 with 258 million cubic yards (197 million m3) of sediment. However, additional debris flows from Mount St. Helens plus sediment from storm-related riverbank failures quickly filled the basin. It was nearly full by 2012, and large amounts of sediment overflowed the SRS and continued downstream. In July 2012, the Corps awarded a $4.5 million contract to LKE Corporation of Washougal, to raise the spillway by . In 2013, the contractor raised the dam's spillway by to increase the ability of the SRS to trap sediment. The higher spillway reduces the slope of the sediment plain behin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mount St
Mount is often used as part of the name of specific mountains, e.g. Mount Everest. Mount or Mounts may also refer to: Places * Mount, Cornwall, a village in Warleggan parish, England * Mount, Perranzabuloe, a hamlet in Perranzabuloe parish, Cornwall, England * Mounts, Indiana, a community in Gibson County, Indiana, United States People * Mount (surname) * William L. Mounts (1862–1929), American lawyer and politician Computing and software * Mount (computing), the process of making a file system accessible * Mount (Unix), the utility in Unix-like operating systems which mounts file systems Displays and equipment * Mount, a fixed point for attaching equipment, such as a hardpoint on an airframe * Mounting board, in picture framing * Mount, a hanging scroll for mounting paintings * Mount, to display an item on a heavy backing such as foamcore, e.g.: ** To pin a biological specimen, on a heavy backing in a stretched stable position for ease of dissection or display ** To p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Washougal, Washington
Washougal ( ) is a city in Clark County, Washington, United States. The population was 17,039 as of the 2020 census. History Washougal was officially incorporated on December 4, 1908. Its Mount Pleasant Grange Hall is the oldest continually used grange hall in Washington. This small community is located on the Washington side of the Columbia River, with its lowlands and famous prairie situated on the west entrance to the scenic Columbia River Gorge. Motorists who approach Washougal from the west on the Lewis & Clark Highway can see Mount Hood rising above the Cascade Mountains framed by the columnar cliffs that signal the gateway of the Gorge. It is home to Excelsior High School and Washougal High School. It can be accurately stated that Washougal is the "crossroads to discovery" in the Pacific Northwest. Shortly after Capt. Robert Gray, a Boston fur trader, entered the mouth of the Columbia River in May 1792, the famed British explorer George Vancouver traveled to the reg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Buildings And Structures In Cowlitz County, Washington
A building, or edifice, is an enclosed structure with a roof and walls standing more or less permanently in one place, such as a house or factory (although there's also portable buildings). Buildings come in a variety of sizes, shapes, and functions, and have been adapted throughout history for a wide number of factors, from building materials available, to weather conditions, land prices, ground conditions, specific uses, prestige, and aesthetic reasons. To better understand the term ''building'' compare the list of nonbuilding structures. Buildings serve several societal needs – primarily as shelter from weather, security, living space, privacy, to store belongings, and to comfortably live and work. A building as a shelter represents a physical division of the human habitat (a place of comfort and safety) and the ''outside'' (a place that at times may be harsh and harmful). Ever since the first cave paintings, buildings have also become objects or canvasses of much artis ... [...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] |
Longview, Washington
Longview is a city in Cowlitz County, Washington, United States. It is the principal city of the Longview, Washington Metropolitan Statistical Area, which encompasses all of Cowlitz County. Longview's population was 37,818 at the time of the 2020 census, making it the largest city in Cowlitz County. The city is located in southwestern Washington, at the junction of the Cowlitz and Columbia rivers. Longview shares a border with Kelso to the east, which is the county seat. The Cowlitz Indian Tribe, a federally recognized tribe of Cowlitz people, is headquartered in Longview. The Long-Bell Lumber Company, led by Robert A. Long, decided to buy a great expanse of timberland in Cowlitz County in 1918. A total of 14,000 workers were needed to run the two large mills as well as lumber camps that were planned. The number of workers needed was more than a lumber town, or the nearest town, could provide. Long planned and built a complete city in 1921 that could support a population o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kelso, Washington
Kelso is a city in the southwestern part of the U.S. state of Washington and is the county seat of Cowlitz County. At the 2020 census, the population was 12,720. Kelso is part of the Longview, Washington Metropolitan statistical area, which has a population of 110,730. Kelso shares its long western border with Longview. It is near Mount St. Helens. History The earliest known inhabitants of Kelso were Native Americans from the Cowlitz tribe. The Cowlitz people were separated into the Upper (or Taidnapam) and Lower (or Mountain) Cowlitz tribes, who were members of the Sahaptin and Salish language families, respectively. In 1855, European explorers noted that there numbered over 6,000 individuals of the Cowlitz Tribe. Kelso was founded by Peter W. Crawford, a Scottish surveyor, who, in 1847, took up the first donation land claim on the Lower Cowlitz River. Crawford platted a townsite which he named after his home town of Kelso, Scotland. The original plat was dated and fi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Castle Rock, Washington
Castle Rock is a city in Cowlitz County, Washington. Located between the Willapa Hills and the western base of Mount St. Helens, Castle Rock is at the heart of Washington timber country in the Pacific temperate rain forest. Castle Rock is part of the Longview, Washington Metropolitan Statistical Area; the population was 2,446 as of the 2020 census. History Castle Rock is named for a volcanic rock outcropping over the Cowlitz River, "The Rock", rising 190 feet high on the south side of the city. The rock formation, resembling a castle, became a geographic landmark for Cowlitz Indians and Hudson's Bay Company traders as early as 1832. Today, it is the location of The Rock Community Park, with hiking trails, picnic tables, and a historical marker. Castle Rock is centered primarily on the donation land claim of Eliza and William Huntington, who settled at the location in 1852. The city was platted December 12, 1888 and incorporated on June 20, 1890. Castle Rock prospered as a Cowl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Portland, Oregon
Portland (, ) is a port city in the Pacific Northwest and the largest city in the U.S. state of Oregon. Situated at the confluence of the Willamette and Columbia rivers, Portland is the county seat of Multnomah County, the most populous county in Oregon. Portland had a population of 652,503, making it the 26th-most populated city in the United States, the sixth-most populous on the West Coast, and the second-most populous in the Pacific Northwest, after Seattle. Approximately 2.5 million people live in the Portland metropolitan statistical area (MSA), making it the 25th most populous in the United States. About half of Oregon's population resides within the Portland metropolitan area. Named after Portland, Maine, the Oregon settlement began to be populated in the 1840s, near the end of the Oregon Trail. Its water access provided convenient transportation of goods, and the timber industry was a major force in the city's early economy. At the turn of the 20th century, the ... [...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] |
North Fork Toutle River
The North Fork Toutle River is a tributary of the Toutle River in southwestern Washington in the United States. The river has its headwaters near Spirit Lake, on the north side of Mount St. Helens, and flows to the Toutle River, about upstream of its confluence with the Cowlitz River. River miles are marked and numbered on the relevant map quadrangles. The largest tributary is the Green River, which joins near the unincorporated town of Toutle. The North Fork's watershed was severely affected by the 1980 eruption of Mount St. Helens, which coated the valley with ash and filled it with successive mudflows. The result of the eruption was that many hillsides were stripped of forest, and as a result erosion has increased dramatically and the North Fork is now extremely laden with sediment. Previously, Spirit Lake was the source of the river, but eruptions blocked the outlet and Spirit Lake no longer drains directly into the North Fork; instead, a tunnel was excavated in 1985 to co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Toutle River
The Toutle River is a tributary of the Cowlitz River in the U.S. state of Washington. It rises in two forks merging near Toutle below Mount St. Helens and joins the Cowlitz near Castle Rock, upstream of the larger river's confluence with the Columbia River. River miles are marked and numbered on the relevant map quadrangles. The river was altered by the 1980 eruption of Mount St. Helens, a nearby volcano, and subsequent flows of ash and other debris. It was further altered by dredging to remove sediment, and by construction of the Toutle River Sediment Retention Structure on the North Fork Toutle River. Course The Toutle River begins at the confluence of the North Fork Toutle River and the South Fork Toutle River near the community of Toutle. The forks originate on Mount St. Helens in Mount St. Helens National Volcanic Monument, and flow generally west to form the main stem, which continues generally west, with significant north–south deviations. The town of Toutle lies ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
