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Arrowrock Reservoir
Arrowrock Dam is a concrete arch dam in the western United States, on the Boise River in southwestern Idaho, east of Boise. Opened in 1915, it is located on the border of Boise and Elmore counties, upstream of the Lucky Peak Dam and reservoir. The spillway elevation for Arrowrock is above sea level and its primary purpose is to provide irrigation water for agriculture. The dam was designated as a National Historic Civil Engineering Landmark by the American Society of Civil Engineers in 2016, and is operated by the U.S. Bureau of Reclamation. Preparations In 1910, the Reclamation Service began to consider another storage facility farther east on the Boise River. After several surveys, engineers decided upon the Arrowrock site which had previously been the site of a private irrigation venture under the direction of Arthur De Wint Foote yet failed for lack of funding. The Arrowrock site is at the confluence of the main channel and the south fork. That was to be the most ambi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boise River
The Boise River is a U.S. Geological Survey. National Hydrography Dataset high-resolution flowline data. , accessed May 3, 2011 tributary of the Snake River in the Northwestern United States. It drains a rugged portion of the Sawtooth Range in southwestern Idaho northeast of Boise, as well as part of the western Snake River Plain. The watershed encompasses approximately of highly diverse habitats, including alpine canyons, forest, rangeland, agricultural lands, and urban areas. Description The Boise River rises in three separate forks in the Sawtooth Range at elevations exceeding , and is formed by the confluence of its North and Middle forks. The North Fork, long, rises in the Sawtooth Wilderness Area, along the Boise– Elmore county line, northeast of Boise. It flows generally southwest through the remote mountains in the Boise National Forest. The Middle Fork, approximately in length, rises within of the North Fork in the southern Sawtooth Wilderness Area in northeast ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Irrigation
Irrigation (also referred to as watering of plants) is the practice of applying controlled amounts of water to land to help grow crops, landscape plants, and lawns. Irrigation has been a key aspect of agriculture for over 5,000 years and has been developed by many cultures around the world. Irrigation helps to grow crops, maintain landscapes, and revegetation, revegetate disturbed soils in dry areas and during times of below-average rainfall. In addition to these uses, irrigation is also employed to protect crops from frost, suppress weed growth in grain fields, and prevent soil consolidation. It is also used to cool livestock, reduce dust, dispose of sewage, and support mining operations. Drainage, which involves the removal of surface and sub-surface water from a given location, is often studied in conjunction with irrigation. There are several methods of irrigation that differ in how water is supplied to plants. Surface irrigation, also known as gravity irrigation, is the olde ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
YMCA
YMCA, sometimes regionally called the Y, is a worldwide youth organisation based in Geneva, Switzerland, with more than 64 million beneficiaries in 120 countries. It has nearly 90,000 staff, some 920,000 volunteers and 12,000 branches worldwide. It was founded in London on 6 June 1844 by George Williams (philanthropist), George Williams as the Young Men's Christian Association. The organisation's stated aim is to put Christian values into practice by developing a healthy body, mind, and spirit. From its inception, YMCA grew rapidly, ultimately becoming a worldwide movement founded on the principles of muscular Christianity. Local YMCAs deliver projects and services focused on youth development through a wide variety of youth activities, including providing athletic facilities, holding classes for a wide variety of skills, promoting Christianity, and humanitarian work. YMCA is a non-governmental federation, with each independent local YMCA affiliated with its national or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Force Account
In physics, a force is an influence that can cause an object to change its velocity unless counterbalanced by other forces. In mechanics, force makes ideas like 'pushing' or 'pulling' mathematically precise. Because the magnitude and direction of a force are both important, force is a vector quantity. The SI unit of force is the newton (N), and force is often represented by the symbol . Force plays an important role in classical mechanics. The concept of force is central to all three of Newton's laws of motion. Types of forces often encountered in classical mechanics include elastic, frictional, contact or "normal" forces, and gravitational. The rotational version of force is torque, which produces changes in the rotational speed of an object. In an extended body, each part applies forces on the adjacent parts; the distribution of such forces through the body is the internal mechanical stress. In the case of multiple forces, if the net force on an extended body is zero the bo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Salt Lake City
Salt Lake City, often shortened to Salt Lake or SLC, is the capital and most populous city of the U.S. state of Utah. It is the county seat of Salt Lake County, the most populous county in the state. The city is the core of the Salt Lake City Metropolitan Statistical Area (MSA), which had a population of 1,257,936 at the 2020 census. Salt Lake City is further situated within a larger metropolis known as the Salt Lake City–Ogden–Provo Combined Statistical Area, a corridor of contiguous urban and suburban development stretched along a segment of the Wasatch Front, comprising a population of 2,746,164 (as of 2021 estimates), making it the 22nd largest in the nation. With a population of 199,723 in 2020, it is the 111th most populous city in the United States. It is also the central core of the larger of only two major urban areas located within the Great Basin (the other being Reno, Nevada). Salt Lake City was founded on July 24, 1847 by settlers led by Brigham Young ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oregon Short Line Railroad
The Oregon Short Line Railroad was a railroad in Wyoming, Idaho, Utah, Montana and Oregon in the United States. The line was organized as the Oregon Short Line Railway in 1881 as a subsidiary of the Union Pacific Railway. The Union Pacific intended the line to be the shortest route ("the short line") from Wyoming to Oregon and the Pacific Northwest. Construction was begun in 1881 at Granger, Wyoming, Granger, Wyoming, and completed in 1884 at Huntington, Oregon, Huntington, Oregon. In 1889 the line merged with the Utah and Northern Railway, Utah & Northern Railway and a handful of smaller railroads to become the Oregon Short Line and Utah Northern Railway. Following the bankruptcy of Union Pacific in 1897, the line was taken into receivership and reorganized as the Oregon Short Line Railroad ("OSL"). The OSL became a part of the Union Pacific System in the Harriman reorganization of 1898. Oregon Short Line Railway The Oregon Short Line Railway was organized on April 14, 1881. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
William Howard Taft
William Howard Taft (September 15, 1857March 8, 1930) served as the 27th president of the United States from 1909 to 1913 and the tenth chief justice of the United States from 1921 to 1930. He is the only person to have held both offices. Taft was born in Cincinnati, Ohio. His father, Alphonso Taft, was a U.S. attorney general and secretary of war. Taft attended Yale and joined Skull and Bones, of which his father was a founding member. After becoming a lawyer, Taft was appointed a judge while still in his twenties. He continued a rapid rise, being named Solicitor General of the United States, solicitor general and a judge of the Sixth Circuit Court of Appeals. In 1901, President William McKinley appointed Taft Governor-General of the Philippines, civilian governor of the Philippines. In 1904, President Theodore Roosevelt made him Secretary of War, and he became Roosevelt's hand-picked successor. Despite his personal ambition to become chief justice, Taft declined repeated ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Idaho City, Idaho
Idaho City is a town in, and the county seat of, Boise County, Idaho, Boise County, Idaho, United States, located about northeast of Boise, Idaho, Boise. The population was 466 at the 2020 United States census, 2020 census. Idaho City is part of the Boise City−Nampa, Idaho, Nampa, Idaho Boise metropolitan area, Metropolitan Statistical Area. History Idaho City was founded in December 1862 as “Bannock” (sometimes given as “West Bannock”), amidst the Boise Basin gold rush during the American Civil War, Civil War, the largest since the California gold rush a dozen years earlier. Near the confluence of Elk and Mores Creeks, its plentiful water supply allowed it to outgrow the other nearby camps in the basin, such as Placerville, Idaho, Placerville, Pioneerville, and Centerville. As its population swelled, the new Idaho Territory, Idaho Territorial legislature changed the town's name to “Idaho City,” to avoid confusion with Bannack, Montana, Bannack, in present-day B ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boise River Diversion Dam
The Boise River Diversion Dam is a diversion dam in the western United States, on the Boise River in southwestern Idaho. southeast and upstream of Boise in Ada County, it was completed in 1909 and is operated by the U.S. Bureau of Reclamation. The diverted water fills the concrete New York Canal, the primary irrigation channel for Ada and Canyon counties in the Treasure Valley. Several miles upstream of the Diversion Dam is Lucky Peak Dam. Completed in 1955, it was built and is operated by the U.S. Army Corps of Engineers. Construction In March 1906, the Utah Fire Proofing Company began work on the Boise River Diversion Dam with the provision that the structure would be completed within one year. It soon became apparent that the dam would not be finished on time. With little experience in such endeavors, Utah Fire Proofing failed to provide adequate foremen for the project. At least nineteen superintendents worked on the dam and their incompetence led to an extraordinary ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arch Dam
An arch dam is a concrete dam that is curved upstream in plan. The arch dam is designed so that the force of the water against it, known as hydrostatic pressure, presses against the arch, causing the arch to straighten slightly and strengthening the structure as it pushes into its foundation or abutments. An arch dam is most suitable for narrow canyons or gorges with steep walls of stable rock to support the structure and stresses. Since they are thinner than any other dam type, they require much less construction material, making them economical and practical in remote areas. Classification In general, arch dams are classified based on the ratio of the base thickness to the structural height (b/h) as: * Thin, for b/h less than 0.2, * Medium-thick, for b/h between 0.2 and 0.3, and * Thick, for b/h ratio over 0.3. Arch dams classified with respect to their structural height are: * Low dams up to , * Medium high dams between , * High dams over . History The development ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Concrete
Concrete is a composite material composed of aggregate bound together with a fluid cement that cures to a solid over time. It is the second-most-used substance (after water), the most–widely used building material, and the most-manufactured material in the world. When aggregate is mixed with dry Portland cement and water, the mixture forms a fluid slurry that can be poured and molded into shape. The cement reacts with the water through a process called hydration, which hardens it after several hours to form a solid matrix that binds the materials together into a durable stone-like material with various uses. This time allows concrete to not only be cast in forms, but also to have a variety of tooled processes performed. The hydration process is exothermic, which means that ambient temperature plays a significant role in how long it takes concrete to set. Often, additives (such as pozzolans or superplasticizers) are included in the mixture to improve the physical prop ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arthur De Wint Foote
Arthur De Wint Foote (1849–1933) was an American civil engineer and mining engineer who impacted the development of the American West with his innovative engineering works and entrepreneurial ventures. In Northern California in the late 1890s, he designed and built the North Star Mine Powerhouse, the highest capacity impulse-turbine power-plant of the time, and now a California historic landmark; within that plant he designed and installed the then-largest Pelton wheel turbine. Later, he designed and built Foote's Crossing, a high bridge, and Foote's Crossing Road, both now memorialized as California and U.S. landmarks. Early life and education Born in Guilford, Connecticut, Foote's ancestry was English—from Yorkshire before 1630. After preparatory schooling as a youth, he attended Yale College's Sheffield Scientific School, but left in 1868 before graduating. From there he began his early career in business and construction ventures along the eastern seaboard of the US a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
