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Johnstown Flood
The Johnstown Flood (locally, the Great Flood of 1889) occurred on Friday, May 31, 1889, after the catastrophic failure of the South Fork Dam, located on the south fork of the Little Conemaugh River, upstream of the town of Johnstown, Pennsylvania, United States. The dam ruptured after several days of extremely heavy rainfall, releasing 14.55 million cubic meters of water. With a volumetric flow rate that temporarily equaled the average flow rate of the Mississippi River,Sid Perkins, "Johnstown Flood matched volume of Mississippi River" ''Science News'', Vol.176 #11, 21 November 2009, accessed 14 October 2012 the flood killed 2,209 people and accounted for $17 million of damage (about $534 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Allegheny Mountains
The Allegheny Mountain Range (; also spelled Alleghany or Allegany), informally the Alleghenies, is part of the vast Appalachian Mountain Range of the Eastern United States and Canada and posed a significant barrier to land travel in less developed eras. The Allegheny Mountains have a northeast–southwest orientation, running for about from north-central Pennsylvania, southward through western Maryland and eastern West Virginia. The Alleghenies comprise the rugged western-central portion of the Appalachians. They rise to approximately in northeastern West Virginia. In the east, they are dominated by a high, steep escarpment known as the Allegheny Front. In the west, they slope down into the closely associated Allegheny Plateau, which extends into Ohio and Kentucky. The principal settlements of the Alleghenies are Altoona, State College, and Johnstown, Pennsylvania; and Cumberland, Maryland. Name The name is derived from the Allegheny River, which drains only a small porti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stone Bridge (Johnstown, Pennsylvania)
The Stone Bridge spans the Conemaugh River in Johnstown, Pennsylvania. The bridge is a seven-arch stone railroad bridge located on the Norfolk Southern Railway mainline, built by the Pennsylvania Railroad in 1887-88. Its upstream face was reinforced with concrete in 1929. This bridge survived the Johnstown Flood of 1889, but the bridge blocked debris across the river. These materials, including barbed wire, subsequently caught fire and created an inferno covering . Scores of people were trapped and killed. The bridge is visible from Point Park in downtown Johnstown. Stone Bridge project The Stone Bridge, located on the edge of Johnstown's downtown, is an arched bridge built by the Pennsylvania Railroad in 1887. On May 31, 1889, its seven arches blocked tons of debris, carried by the Johnstown Flood, including miles of barbed wire twisted through it from the destruction of a plant. The bridge withstood the force of the flood and this load. But an enormous fire broke out in the de ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stonycreek River
The Stonycreek River (also referred to as Stony Creek) is a tributary of the Conemaugh River, approximately 45 mi (72 km) long, in southwestern Pennsylvania in the United States. Course It rises in the mountains of eastern Somerset County from the headwater spring, Pius Spring, in Berlin, and flows north past Shanksville, Stoystown, Hooversville, and Ferndale. It joins the Little Conemaugh River at Johnstown to form the Conemaugh River. Additional variant names include: Achsinne-hanne, Gordon, and Sinne-hanna. The river basin is in a highly scenic area but had been considered among the most degraded in the state, largely as the result of acid mine drainage from the long history of coal mining in the region. The recovery of the river has been an ongoing project of federal, state, and private agencies, and continues to progress. In recent decades, the river has become a popular destination for trout fishing. Recreation Following the sale of the Quemahoning Reserv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1980-04-18-40 View Through To Lower Side Of Dam
__NOTOC__ Year 198 (CXCVIII) was a common year starting on Sunday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Sergius and Gallus (or, less frequently, year 951 ''Ab urbe condita''). The denomination 198 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years. Events By place Roman Empire *January 28 **Publius Septimius Geta, son of Septimius Severus, receives the title of Caesar. **Caracalla, son of Septimius Severus, is given the title of Augustus. China *Winter – Battle of Xiapi: The allied armies led by Cao Cao and Liu Bei defeat Lü Bu; afterward Cao Cao has him executed. By topic Religion * Marcus I succeeds Olympianus as Patriarch of Constantinople (until 211). Births * Lu Kai (or Jingfeng), Chinese official and general (d. 269) * Quan Cong, Chinese general and advisor (d. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rocky Mountains
The Rocky Mountains, also known as the Rockies, are a major mountain range and the largest mountain system in North America. The Rocky Mountains stretch in straight-line distance from the northernmost part of western Canada, to New Mexico in the southwestern United States. Depending on differing definitions between Canada and the U.S., its northern terminus is located either in northern British Columbia's Terminal Range south of the Liard River and east of the Trench, or in the northeastern foothills of the Brooks Range/ British Mountains that face the Beaufort Sea coasts between the Canning River and the Firth River across the Alaska-Yukon border. Its southernmost point is near the Albuquerque area adjacent to the Rio Grande rift and north of the Sandia–Manzano Mountain Range. Being the easternmost portion of the North American Cordillera, the Rockies are distinct from the tectonically younger Cascade Range and Sierra Nevada, which both lie farther to its west. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pennsylvania Route 56
Pennsylvania Route 56 (PA 56) is a state highway located in west central Pennsylvania. Its western terminus is at the eastern end of the C.L. Schmitt Bridge in New Kensington. Its eastern terminus is on U.S. Route 30 (US 30) west of Bedford. Route description PA 56 starts at the intersection of Industrial Boulevard and 9th Street in New Kensington, Westmoreland County; this is also the eastern end of the C.L. Schmitt Bridge, across the Allegheny River from the PA 28 freeway. In New Kensington, PA 56 first heads south along Industrial Boulevard before turning east onto 7th Street where it first encounters a short city-maintained section of road before transitioning back to state maintenance. In the east part of New Kensington, it has a concurrency with PA 366 before entering the city of Lower Burrell. Also in Westmoreland County, it has concurrencies with PA 356 and PA 66 Alternate. After crossing the Kiskiminetas River, PA 56 merges with PA 66 for a sh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Slag
Slag is a by-product of smelting (pyrometallurgical) ores and used metals. Broadly, it can be classified as ferrous (by-products of processing iron and steel), ferroalloy (by-product of ferroalloy production) or non-ferrous/base metals (by-products of recovering non-ferrous materials like copper, nickel, zinc and phosphorus). Within these general categories, slags can be further categorized by their precursor and processing conditions (e.g., Blast furnace (BF) slags, air-cooled blast furnace (ACBF) slag, basic oxygen furnace (BOF) slag, and electric arc furnace (EAF) slag) . Due to the large demand for these materials, slag production has also significantly increased throughout the years despite recycling (most notably in the iron and steelmaking industries) and upcycling efforts. The World Steel Association (WSA) estimates that 600 kg of by-products (~90 wt% is slags) are generated per tonne of steel produced. Composition Slag is usually a mixture of metal oxides and sili ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Drainage Basin
A drainage basin is an area of land where all flowing surface water converges to a single point, such as a river mouth, or flows into another body of water, such as a lake or ocean. A basin is separated from adjacent basins by a perimeter, the '' drainage divide'', made up of a succession of elevated features, such as ridges and hills. A basin may consist of smaller basins that merge at river confluences, forming a hierarchical pattern. Other terms for a drainage basin are catchment area, catchment basin, drainage area, river basin, water basin, and impluvium. In North America, they are commonly called a watershed, though in other English-speaking places, "watershed" is used only in its original sense, that of a drainage divide. In a closed drainage basin, or endorheic basin, the water converges to a single point inside the basin, known as a sink, which may be a permanent lake, a dry lake, or a point where surface water is lost underground. Drainage basins are similar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flooding
A flood is an overflow of water ( or rarely other fluids) that submerges land that is usually dry. In the sense of "flowing water", the word may also be applied to the inflow of the tide. Floods are an area of study of the discipline hydrology and are of significant concern in agriculture, civil engineering and public health. Human changes to the environment often increase the intensity and frequency of flooding, for example land use changes such as deforestation and removal of wetlands, changes in waterway course or flood controls such as with levees, and larger environmental issues such as climate change and sea level rise. In particular climate change's increased rainfall and extreme weather events increases the severity of other causes for flooding, resulting in more intense floods and increased flood risk. Flooding may occur as an overflow of water from water bodies, such as a river, lake, or ocean, in which the water overtops or breaks levees, resulting in some of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Surface Runoff
Surface runoff (also known as overland flow) is the flow of water occurring on the ground surface when excess rainwater, stormwater, meltwater, or other sources, can no longer sufficiently rapidly infiltrate in the soil. This can occur when the soil is saturated by water to its full capacity, and the rain arrives more quickly than the soil can absorb it. Surface runoff often occurs because impervious areas (such as roofs and pavement) do not allow water to soak into the ground. Furthermore, runoff can occur either through natural or man-made processes. Surface runoff is a major component of the water cycle. It is the primary agent of soil erosion by water. The land area producing runoff that drains to a common point is called a drainage basin. Runoff that occurs on the ground surface before reaching a channel can be a nonpoint source of pollution, as it can carry man-made contaminants or natural forms of pollution (such as rotting leaves). Man-made contaminants in runoff i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dam Site Abutments P6220313
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, tap water, human consumption, Industrial water, 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 Dike (construction), dikes) are used to manage or prevent water flow into specific land regions. The earliest known dam is the Jawa Dam (Jordan), 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 build ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cambria Iron Company
The Cambria Iron Company of Johnstown, Pennsylvania was a major 19th-century industrial producer of iron and steel. Founded in 1852, it had the nation's largest steel foundry in the 1870s, and was renamed the Cambria Steel Company in 1898. The company used many innovations in the steelmaking process, including those of William Kelly and Henry Bessemer. The company was acquired in 1923 by the Bethlehem Steel Company. The company's historic facilities, extending some along the Conemaugh and Little Conemaugh Rivers, are a National Historic Landmark District. A number of works by the firm are listed on the National Register of Historic Places. Name history The Cambria Iron Works was reorganized in 1898 and renamed the Cambria Steel Company. In 1916, the Midvale Steel and Ordnance Company bought the Cambria Steel Company, and sold it to the Bethlehem Steel Company in 1923. Facilities The industrial facilities of the Cambria occupied five separate sites in and around Johnstown, P ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
