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Bull Run Lake
Bull Run Lake is a reservoir, an impoundment of the Bull Run River in the U.S. state of Oregon. Providing part of the primary drinking water supply for Portland, Oregon, it rates highly as an oligotrophic lake, a very clean source of water. As of 1925, noted geographer Lewis A. McArthur described the lake as one of the two most important in the state (along with Crater Lake), supplying the drinking water for a third of the state's population. The lake basin receives more than of rain annually due to its location in the Cascade Range, about west of Mount Hood. Public access to the area has been controlled since June 17, 1892, with the creation of the Bull Run Reserve by President Benjamin Harrison. Water from the reservoir first flowed into the Portland water system on January 2, 1895. President Theodore Roosevelt restricted entry to all but government agents and water company employees and banned stock grazing on April 28, 1904. In 1915 a new timber and rock fill dam ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clackamas County, Oregon
Clackamas County is one of the 36 counties in the U.S. state of Oregon. As of the 2020 census, the population was 421,401, making it Oregon's third-most populous county. Its county seat is Oregon City. The county was named after the Native Americans living in the area, the Clackamas people, who are part of the Chinookan peoples. Clackamas County is part of the Portland-Vancouver- Hillsboro, OR- WA Metropolitan Statistical Area. It is in the Willamette Valley. History Originally named Clackamas District, it was one of the four original Oregon districts created by Oregon's Provisional Legislature on July 5, 1843, along with Twality (later Washington), Champooick (later Marion), and Yamhill. The four districts were redesignated as counties in 1845. At the time of its creation, Clackamas County covered portions of four present-day U.S. states and a Canadian province. The Columbia River became the northern boundary of the county in 1844. Soon after, John McLoughlin staked a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Theodore Roosevelt
Theodore Roosevelt Jr. ( ; October 27, 1858 – January 6, 1919), often referred to as Teddy or by his initials, T. R., was an American politician, statesman, soldier, conservationist, naturalist, historian, and writer who served as the 26th president of the United States from 1901 to 1909. He previously served as the 25th vice president of the United States, vice president under President William McKinley from March to September 1901 and as the 33rd governor of New York from 1899 to 1900. Assuming the presidency after Assassination of William McKinley, McKinley's assassination, Roosevelt emerged as a leader of the History of the Republican Party (United States), Republican Party and became a driving force for United States antitrust law, anti-trust and Progressive Era, Progressive policies. A sickly child with debilitating asthma, he overcame his health problems as he grew by embracing The Strenuous Life, a strenuous lifestyle. Roosevelt integrated his exuberant personalit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Protected Areas Of Clackamas County, Oregon
Protection is any measure taken to guard a thing against damage caused by outside forces. Protection can be provided to physical objects, including organisms, to systems, and to intangible things like civil and political rights. Although the mechanisms for providing protection vary widely, the basic meaning of the term remains the same. This is illustrated by an explanation found in a manual on electrical wiring: Some kind of protection is a characteristic of all life, as living things have evolved at least some protective mechanisms to counter damaging environmental phenomena, such as ultraviolet light. Biological membranes such as bark on trees and skin on animals offer protection from various threats, with skin playing a key role in protecting organisms against pathogens and excessive water loss. Additional structures like scales and hair offer further protection from the elements and from predators, with some animals having features such as spines or camouflage servi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Buildings And Structures In Clackamas County, Oregon
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] |
Buildings And Structures In Multnomah County, Oregon
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 artistic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mount Hood National Forest
The Mount Hood National Forest is a U.S. National Forest in the U.S. state of Oregon, located east of the city of Portland and the northern Willamette River valley. The Forest extends south from the Columbia River Gorge across more than of forested mountains, lakes and streams to the Olallie Scenic Area, a high lake basin under the slopes of Mount Jefferson. The Forest includes and is named after Mount Hood, a stratovolcano and the highest mountain in the state. The Forest encompasses some . Forest headquarters are located in Sandy, Oregon. A 1993 Forest Service study estimated that the extent of old growth in the Forest was . The Forest is divided into four separate districts – Barlow (with offices in Dufur), Clackamas River ( Estacada), Hood River ( Mount Hood-Parkdale), and Zigzag (Zigzag). In descending order of land area, Mount Hood National Forest is located in parts of Clackamas, Hood River, Wasco, Multnomah, Marion, and Jefferson counties. History Mount Ho ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lakes Of Clackamas County, Oregon
A lake is an area filled with water, localized in a basin, surrounded by land, and distinct from any river or other outlet that serves to feed or drain the lake. Lakes lie on land and are not part of the ocean, although, like the much larger oceans, they do form part of the Earth's water cycle. Lakes are distinct from lagoons, which are generally coastal parts of the ocean. Lakes are typically larger and deeper than ponds, which also lie on land, though there are no official or scientific definitions. Lakes can be contrasted with rivers or streams, which usually flow in a channel on land. Most lakes are fed and drained by rivers and streams. Natural lakes are generally found in mountainous areas, rift zones, and areas with ongoing glaciation. Other lakes are found in endorheic basins or along the courses of mature rivers, where a river channel has widened into a basin. Some parts of the world have many lakes formed by the chaotic drainage patterns left over from the last ice ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lakes Of Multnomah County, Oregon
A lake is an area filled with water, localized in a basin, surrounded by land, and distinct from any river or other outlet that serves to feed or drain the lake. Lakes lie on land and are not part of the ocean, although, like the much larger oceans, they do form part of the Earth's water cycle. Lakes are distinct from lagoons, which are generally coastal parts of the ocean. Lakes are typically larger and deeper than ponds, which also lie on land, though there are no official or scientific definitions. Lakes can be contrasted with rivers or streams, which usually flow in a channel on land. Most lakes are fed and drained by rivers and streams. Natural lakes are generally found in mountainous areas, rift zones, and areas with ongoing glaciation. Other lakes are found in endorheic basins or along the courses of mature rivers, where a river channel has widened into a basin. Some parts of the world have many lakes formed by the chaotic drainage patterns left over from the last ic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reservoirs In Oregon
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] |
List Of Lakes In Oregon
This is a list of the lakes and reservoirs of Oregon. Gallery File:AbertRim-right.jpg, Lake Abert and the Abert Rim File:Applegate Lake Oregon.jpg, Applegate Lake in Jackson County File:Lake Billy Chinook, Deschutes National Forest, Oregon (photo by Bob Nichol).jpg, Lake Billy Chinook File:Bull Run Lake.jpg, Bull Run Lake and Mount Hood File:Cleawox Lake.jpg, Cleawox Lake on the coast File:Cougar Reservoir 2011.jpg, Cougar Reservoir on the South Fork McKenzie River File:Crater lake oregon.jpg, Crater Lake File:Cullaby_Lake,_Oregon.jpg, Cullaby Lake in Clatsop County File:Cultus Lake.JPG, Cultus Lake in Deschutes County File:Diamond Lake & Mt Bailey.....JPG, Diamond Lake and Mount Bailey File:Elk Lake and South Sister, Oregon.jpg, Elk Lake and South Sister File:Fern Ridge Reservoir, Oregon.JPG, Fern Ridge Reservoir on the Long Tom River in Lane County File:Fish Lake Oregon.jpg, Fish Lake with Mount McLoughlin in the background File:Goose Lake 002.jpg, Goose Lake on the O ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thermocline
A thermocline (also known as the thermal layer or the metalimnion in lakes) is a thin but distinct layer in a large body of fluid (e.g. water, as in an ocean or lake; or air, e.g. an atmosphere) in which temperature changes more drastically with depth than it does in the layers above or below. In the ocean, the thermocline divides the upper mixed layer from the calm deep water below. Depending largely on season, latitude, and turbulent mixing by wind, thermoclines may be a semi-permanent feature of the body of water in which they occur, or they may form temporarily in response to phenomena such as the radiative heating/cooling of surface water during the day/night. Factors that affect the depth and thickness of a thermocline include seasonal weather variations, latitude, and local environmental conditions, such as tides and currents. Oceans Most of the heat energy of the sunlight that strikes the Earth is absorbed in the first few centimeters at the ocean's surface, which ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Benjamin Harrison
Benjamin Harrison (August 20, 1833March 13, 1901) was an American lawyer and politician who served as the 23rd president of the United States from 1889 to 1893. He was a member of the Harrison family of Virginia–a grandson of the ninth president, William Henry Harrison, and a great-grandson of Benjamin Harrison V, a founding father. Harrison was born on a farm by the Ohio River and graduated from Miami University in Oxford, Ohio. After moving to Indianapolis, he established himself as a prominent local attorney, Presbyterian church leader, and politician in Indiana. During the American Civil War, he served in the Union Army as a colonel, and was confirmed by the U.S. Senate as a brevet brigadier general of volunteers in 1865. Harrison unsuccessfully ran for governor of Indiana in 1876. The Indiana General Assembly elected Harrison to a six-year term in the Senate, where he served from 1881 to 1887. A Republican, Harrison was elected to the presidency in 1888, def ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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