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Levee Breach
A levee breach or levee failure (also known as dyke breach or dyke failure) is a situation where a levee (or dyke) fails or is intentionally breached, causing the previously contained water to flood the land behind the levee. Causes Man-made levees can fail in a number of ways. The most frequent (and dangerous) form of levee failure is a ''breach''. A ''levee breach'' is when part of the levee actually breaks away, leaving a large opening for water to flood the land protected by the levee. Foundation failure A breach can be a sudden or gradual failure that is caused either by surface erosion or by a subsurface failure of the levee. Levee breaches are often accompanied by levee boils, or sand boils. The underseepage resurfaces on the landside, in the form of a volcano-like cone of sand. Boils signal a condition of incipient instability which may lead to erosion of the levee toe or foundation or result in sinking of the levee into the liquefied foundation below. Some engineer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1927 Mississippi Flood Levee Breach
Nineteen or 19 may refer to: * 19 (number) * One of the years 19 BC, AD 19, 1919, 2019 Films * ''19'' (film), a 2001 Japanese film * ''Nineteen'' (1987 film), a 1987 science fiction film * '' 19-Nineteen'', a 2009 South Korean film * '' Diciannove'', a 2024 Italian drama film informally referred to as "Nineteen" in some sources Science * Potassium, an alkali metal * 19 Fortuna, an asteroid Music * 19 (band), a Japanese pop music duo Albums * ''19'' (Adele album), 2008 * ''19'', a 2003 album by Alsou * ''19'', a 2006 album by Evan Yo * ''19'', a 2018 album by MHD * ''19'', one half of the double album '' 63/19'' by Kool A.D. * ''Number Nineteen'', a 1971 album by American jazz pianist Mal Waldron * ''XIX'' (EP), a 2019 EP by 1the9 Songs * "19" (song), a 1985 song by British musician Paul Hardcastle * "Stone in Focus", officially "#19", a composition by Aphex Twin * "Nineteen", a song from the 1992 album ''Refugee'' by Bad4Good * "Nineteen", a song from the 20 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Great Mississippi Flood Of 1927
The Great Mississippi Flood of 1927 was the most destructive river flood in the history of the United States, with inundated in depths of up to over the course of several months in early 1927. The period cost of the damage has been estimated to be between $246 million and $1 billion, which ranges from $–$ billion in dollars. About 500 people died and over 630,000 people were directly affected; 94% of those affected lived in Arkansas, Mississippi, and Louisiana, especially in the Mississippi Delta region. 127 people died in Arkansas, making it one of the deadliest disasters ever recorded in the state. More than 200,000 African Americans were displaced from their homes along the Lower Mississippi River and had to live for lengthy periods in relief camps. As a result of this disruption, many joined the Great Migration from the South to the industrial cities of the North and the Midwest; the migrants preferred to move, rather than return to rural agricultural labor. To prev ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Army Corps Of Engineers
The United States Army Corps of Engineers (USACE) is the military engineering branch of the United States Army. A direct reporting unit (DRU), it has three primary mission areas: Engineer Regiment, military construction, and civil works. USACE has 37,000 civilian and military personnel, making it one of the world's largest public engineering, design, and construction management agencies. The USACE workforce is approximately 97% civilian, 3% active duty military. The civilian workforce is mainly located in the United States, Europe and in select Middle East office locations. Civilians do not function as active duty military and are not required to be in active war and combat zones; however, volunteer (with pay) opportunities do exist for civilians to do so. The day-to-day activities of the three mission areas are administered by a lieutenant general known as the chief of engineers/commanding general. The chief of engineers commands the Engineer Regiment, comprisi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
17th Street Canal
The 17th Street Canal is the largest and most important drainage canal in the city of New Orleans. Operating with Pump Station 6, it moves water into Lake Pontchartrain. The canal, along with the Orleans Canal and the London Avenue Canal, form the New Orleans Outfall Canals. The 17th Street Canal forms a significant portion of the boundary between the city of New Orleans and Metairie, Louisiana. The canal has also been known as the Metairie Outlet Canal and the Upperline Canal. History The canal that was to become later known as the 17th Street Canal seems to have had its origin at the start of the 1850s as a canal dug through swampy ground to raise a parallel right of way where the Jefferson and Lake Pontchartrain Railway was built. The railway, in business from 1853 through 1864, connected the town of Carrollton, Louisiana (along the Mississippi River front) with a shipping port on Lake Pontchartrain at what became Bucktown, Louisiana, a distance of about . At the time, mos ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Industrial Canal
The Industrial Canal is a waterway in New Orleans, Louisiana, United States. The waterway's proper name, as used by the U.S. Army United States Army Corps of Engineers, Corps of Engineers and on NOAA nautical charts, is Inner Harbor Navigation Canal (IHNC). The more common "Industrial Canal" name is used locally, both by commercial mariners and by landside residents. The canal connects the Mississippi River to Lake Pontchartrain. It separates Eastern New Orleans, New Orleans East from the rest of the city, and the Lower Ninth Ward, Lower 9th Ward from the Upper 9th Ward of New Orleans, 9th Ward. Approximately half of the waterway's course, from Industrial Lock to a point north of the Florida Avenue Bridge, is Confluence (geography), confluent with both the Gulf Intracoastal Waterway and the Mississippi River Gulf Outlet (MRGO). The entirety of the canal passes through the 9th Ward of New Orleans, 9th Ward of the city. Along the riverfront, the canal constitutes the boundary of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lower Ninth Ward
The Lower Ninth Ward is a neighborhood in the city of New Orleans, Louisiana. As the name implies, it is part of the 9th Ward of New Orleans. The Lower Ninth Ward is often thought of as the entire area within New Orleans downriver of the Industrial Canal; however, the City Planning Commission divides this area into the Lower Ninth Ward and Holy Cross neighborhoods. The term "Lower" refers to its location farther towards the mouth of the Mississippi River, , "down" or "below" the rest of the city. The 9th Ward, like all wards of New Orleans, is a voting district. The 9th Ward was added as a voting district in 1852. The Lower 9th Ward is composed of Ward 9 Districts 1, 2, 4, and 7 which make up the Holy Cross Area and Ward 9 Districts 3, 5, 6, and 8. Higher voting district numbers in the 9th Ward (8–27) are on the upriver side of the Industrial Canal. The area came to international attention for its devastation in the aftermath of Hurricane Katrina in 2005. Geography Exc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hurricane Katrina
Hurricane Katrina was a powerful, devastating and historic tropical cyclone that caused 1,392 fatalities and damages estimated at $125 billion in late August 2005, particularly in the city of New Orleans and its surrounding area. It is tied with Hurricane Harvey as being the List of the costliest tropical cyclones, costliest tropical cyclone in the Atlantic basin. Katrina was the twelfth tropical cyclone, the fifth hurricane, and the third major hurricane of the 2005 Atlantic hurricane season. It was also the fourth-most intense Atlantic hurricane to make landfall in the contiguous United States, gauged by barometric pressure. Katrina formed on August 23, 2005, with the merger of a tropical wave and the remnants of a tropical depression. After briefly weakening to a Tropical cyclone, tropical storm over south Florida, Katrina entered the Gulf of Mexico on August 26 and Rapid intensification, rapidly intensified to a Saffir–Simpson scale, Category 5 hurricane befo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glory River
The Glory River (Nahar al-Aaz), Glory Canal or Prosperity Canal is a shallow canal in Iraq about two kilometers wide built by Saddam Hussein in 1993 to redirect water flowing from the Tigris river into the Euphrates, near their confluence at the Shatt al-Arab. It helped cause an environmental and humanitarian disaster since it diverted natural water flow from the Central Marshes and effectively converted much of the wetlands into a desert. After the Gulf War, First Gulf War, Saddam Hussein aggressively revived a program to divert the flow of the Tigris and the Euphrates rivers away from the marshes in retribution for a 1991 uprisings in Iraq, failed Shia uprising in 1991. Draining of the Mesopotamian Marshes directly affected the Marsh Arabs, forcing them to abandon the settlements in the region. Since the overthrow of Hussein in the 2003 invasion of Iraq, the marshland ecoregion has recovered substantially with the Dike breach, breaching of dikes by local communities. See also ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Subsidence
Subsidence is a general term for downward vertical movement of the Earth's surface, which can be caused by both natural processes and human activities. Subsidence involves little or no horizontal movement, which distinguishes it from slope movement. Processes that lead to subsidence include dissolution of underlying carbonate rock by groundwater; gradual compaction of sediments; withdrawal of fluid lava from beneath a solidified crust of rock; mining; pumping of subsurface fluids, such as groundwater or petroleum; or warping of the Earth's crust by tectonic forces. Subsidence resulting from tectonic deformation of the crust is known as tectonic subsidence and can create accommodation for sediments to accumulate and eventually lithify into sedimentary rock. Ground subsidence is of global concern to geologists, geotechnical engineers, surveyors, engineers, urban planners, landowners, and the public in general.National Research Council, 1991. ''Mitigating losses from land ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Peat
Peat is an accumulation of partially Decomposition, decayed vegetation or organic matter. It is unique to natural areas called peatlands, bogs, mires, Moorland, moors, or muskegs. ''Sphagnum'' moss, also called peat moss, is one of the most common components in peat, although many other plants can contribute. The biological features of sphagnum mosses act to create a habitat aiding peat formation, a phenomenon termed 'habitat manipulation'. Soils consisting primarily of peat are known as histosols. Peat forms in wetland conditions, where flooding or stagnant water obstructs the flow of oxygen from the atmosphere, slowing the rate of decomposition. Peat properties such as organic matter content and saturated hydraulic conductivity can exhibit high spatial heterogeneity. Peatlands, particularly bogs, are the primary source of peat; although less common, other wetlands, including fens, pocosins and peat swamp forests, also deposit peat. Landscapes covered in peat are home to sp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Consolidation (soil)
Soil consolidation refers to the mechanical process by which soil changes volume gradually in response to a change in pressure. This happens because soil is a three-phase material. The first phase consists of soil grains, and a combination of void (air) or other fluid (typically groundwater) comprise the second and third phases. When soil saturated with water is subjected to an increase in pressure, the high volumetric stiffness of water compared to the soil matrix means that the water initially absorbs all the change in pressure without changing volume, creating excess pore water pressure. As water diffuses away from regions of high pressure due to seepage, the soil matrix gradually takes up the pressure change and shrinks in volume. The theoretical framework of consolidation is therefore closely related to the concept of effective stress, and hydraulic conductivity. The early theoretical modern models were proposed one century ago, according to two different approaches, by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
New Madrid, Missouri
New Madrid ( ; ) is a city in New Madrid County, Missouri, United States. The population was 2,787 at the 2020 census. New Madrid is the county seat of New Madrid County. The city is located 42 miles (68 km) southwest of Cairo, Illinois, and north of an exclave of Fulton County, Kentucky, across the Mississippi River. The town is on the north side of the Kentucky Bend in the Mississippi River, which is also known as "New Madrid Bend" or "Madrid Bend." The river curves in an oxbow around an exclave of Fulton County, Kentucky. Scientists expect the river eventually to cut across the neck of the peninsula and make a more direct channel, leaving the Kentucky territory as an island. New Madrid was the epicenter of the very powerful 1811–12 New Madrid earthquakes. History The first more or less permanent settlement at present-day New Madrid was established by bands of Shawnee, Delaware, Creek, and Cherokee who were turned into refugees due to the U.S. War for Independe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
