|
Coastal Erosion In Louisiana
Coastal Erosion in Louisiana is the process of steady depletion of wetlands along the state's coastline in marshes, swamps, and barrier islands, particularly affecting the alluvial basin surrounding the mouth of the Mississippi River at the foot of the Gulf of Mexico on the Eastern half of the state's coast. In the last century, Southeast Louisiana has lost a large portion of its wetlands and is expected to lose more in the coming years, with some estimates claiming wetland losses equivalent to up to 1 football field per hour. One consequence of coastal erosion is an increased vulnerability to hurricane storm surges, which affects the New Orleans metropolitan area and other communities in the region. The state has outlined a comprehensive master plan for coastal restoration and has begun to implement various restoration projects such as fresh water diversions, but certain zones will have to be prioritized and targeted for restoration efforts, as it is unlikely that all deple ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Land Loss In Coastal Louisiana Since 1932 NOAA2013
Land, also known as dry land, ground, or earth, is the solid terrestrial surface of the planet Earth that is not submerged by the ocean or other body of water, bodies of water. It makes up 29% of Earth's surface and includes the Continent, continents and various Island, islands. Earth's land surface is almost entirely covered by regolith, a layer of rock, soil, and minerals that forms the outer part of the Earth's crust, crust. Land plays important roles in Earth's climate system and is involved in the carbon cycle, nitrogen cycle, and water cycle. One-third of land is covered in trees, 15% is used for crops, and 10% is covered in permanent snow and Glacier, glaciers. Land terrain varies greatly and consists of mountains, deserts, plains, plateaus, glaciers, and other landforms. In physical geology, the land is divided into two major categories: Mountain range, mountain ranges and relatively flat interiors called cratons. Both are formed over millions of years through plate te ... [...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 subsi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Southeast Louisiana Flood Protection Authority
The Southeast Louisiana Flood Protection Authority was established by Louisiana state laRevised Statute §38:330.1in September 2006. Its operation began in January 2007. The Authority consists of two regional levee boards which oversee flood protection in the Greater New Orleans area on the east and west banks of the Mississippi River. Commissioners of both Authorities have clearly defined term limits. The Authority also has a Nominating Committee. At that time, levee boards still existing were: Algiers), the East Jefferson (Parish) Levee District, the Lake Borgne Basin Levee District (St. Bernard Parish), the St. Tammany (Parish) Levee District, the Tangipihoa (Parish) Levee District, and levee boards for the east banks of St. John the Baptist and St. Charles Parishes. The several pre-existing boards, while subservient to the SLFPA, remained in operation until existing projects, bonds, and tax millage rates either are consolidated under the new board or expire. Southeast Louisian ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orleans Levee Board
From 1890 through 2006, the Orleans Levee Board was the body of commissioners that oversaw the Orleans Levee District (OLD) which supervised the levee and floodwall system in Orleans Parish, Louisiana (which is coextensive with the city of New Orleans). The role of the OLB has changed over time. Prior to Hurricane Betsy in 1965, the OLB developed land and sold it to raise money to build and improve levees. After 1965, Congress directed the Army Corps of Engineers to be responsible for design and construction of the hurricane flood protection system enveloping New Orleans. Owing to the 1965 legislation, the OLB's duties regarding hurricane surge protection were now limited to collecting the 30% cost share for project design and construction, and to maintaining and operating completed flood protection structures. Until the end of 2006, the OLB was a major governmental entity which functioned independently of municipal government in and around Orleans Parish. In the wake of the catas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lafourche Parish, Louisiana
Lafourche Parish (french: Paroisse de la Fourche) is a parish located in the south of the U.S. state of Louisiana. The parish seat is Thibodaux. The parish was formed in 1807. It was originally the northern part of Lafourche Interior Parish, which consisted of the present parishes of Lafourche and Terrebonne. Lafourche Parish was named after the Bayou Lafourche. City buildings have been featured in television and movies, such as in ''Fletch Lives'', due to its architecture and rich history. At the 2020 census, its population was 97,557. Long a center of sugar cane plantations and sugar production, in November 1887 the parish was the site of the Thibodaux Massacre. After state militia were used to suppress a massive Knights of Labor strike involving 10,000 workers in four parishes, many African Americans retreated to Thibodaux. Local paramilitary forces attacked the men and their families, killing an estimated 50 persons. Hundreds more were missing, wounded, and presumed dead in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Terrebonne Parish, Louisiana
Terrebonne Parish ( ; French: ''Paroisse de Terrebonne'') is a parish located in the southern part of the U.S. state of Louisiana. At the 2010 census, the population was 111,860, and 110,461 in 2019. In 2020, its population declined to 109,580. The parish seat is Houma. The parish was founded in 1822. Terrebonne Parish is part of the Houma-Thibodaux metropolitan statistical area. It is the fifth-largest parish in the state in terms of land area, and it has been a center of Cajun culture since the 18th century. More than 10% of its residents speak French at home. Ray Authement, who was the fifth president of the University of Louisiana at Lafayette, serving from 1974 to 2008 and the longest-serving president of a public university in the United States, was born in rural Terrebonne Parish in 1928, near Chauvin. In 2014 Juan Pickett, former Assistant District Attorney, was elected unopposed in the 32nd Judicial District as the first black judge in Terrebone Parish history. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nutria
The nutria (''Myocastor coypus''), also known as the coypu, is a large, herbivorous, semiaquatic rodent. Classified for a long time as the only member of the family Myocastoridae, ''Myocastor'' is now included within Echimyidae, the family of the spiny rats. The nutria lives in burrows alongside stretches of water, and feeds on river plant stems. Originally native to subtropical and temperate South America, it has since been introduced to North America, Europe, Asia, and Africa, primarily by fur farmers. Although it is still hunted and trapped for its fur in some regions, its destructive burrowing and feeding habits often bring it into conflict with humans, and it is considered an invasive species. Nutria also transmit various diseases to humans and animals mainly through water contamination. Etymology The genus name ''Myocastor'' derives from the two Ancient Greek words (), meaning "rat, mouse", and (), meaning "beaver". Literally, therefore, the name ''Myocastor'' means ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mississippi River – Gulf Outlet Canal
Mississippi () is a state in the Southeastern region of the United States, bordered to the north by Tennessee; to the east by Alabama; to the south by the Gulf of Mexico; to the southwest by Louisiana; and to the northwest by Arkansas. Mississippi's western boundary is largely defined by the Mississippi River. Mississippi is the 32nd largest and 35th-most populous of the 50 U.S. states and has the lowest per-capita income in the United States. Jackson is both the state's capital and largest city. Greater Jackson is the state's most populous metropolitan area, with a population of 591,978 in 2020. On December 10, 1817, Mississippi became the 20th state admitted to the Union. By 1860, Mississippi was the nation's top cotton-producing state and slaves accounted for 55% of the state population. Mississippi declared its secession from the Union on January 9, 1861, and was one of the seven original Confederate States, which constituted the largest slaveholding states in the na ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hurricane Katrina
Hurricane Katrina was a destructive Category 5 Atlantic hurricane that caused over 1,800 fatalities and $125 billion in damage in late August 2005, especially in the city of New Orleans and the surrounding areas. It was at the time the costliest tropical cyclone on record and is now tied with 2017's Hurricane Harvey. The storm was the twelfth tropical cyclone, the fifth hurricane, and the third major hurricane of the 2005 Atlantic hurricane season, as well as the fourth-most intense Atlantic hurricane on record to make landfall in the contiguous United States. Katrina originated on August 23, 2005, as a tropical depression from the merger of a tropical wave and the remnants of Tropical Depression Ten. Early the following day, the depression intensified into a tropical storm as it headed generally westward toward Florida, strengthening into a hurricane two hours before making landfall at Hallandale Beach on August 25. After briefly weakening to tropical storm strength o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canal
Canals or artificial waterways are waterways or engineered channels built for drainage management (e.g. flood control and irrigation) or for conveyancing water transport vehicles (e.g. water taxi). They carry free, calm surface flow under atmospheric pressure, and can be thought of as artificial rivers. In most cases, a canal has a series of dams and locks that create reservoirs of low speed current flow. These reservoirs are referred to as ''slack water levels'', often just called ''levels''. A canal can be called a ''navigation canal'' when it parallels a natural river and shares part of the latter's discharges and drainage basin, and leverages its resources by building dams and locks to increase and lengthen its stretches of slack water levels while staying in its valley. A canal can cut across a drainage divide atop a ridge, generally requiring an external water source above the highest elevation. The best-known example of such a canal is the Panama Canal. Many ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Levee
A levee (), dike (American English), dyke (English in the Commonwealth of Nations, Commonwealth English), embankment, floodbank, or stop bank is a structure that is usually soil, earthen and that often runs parallel (geometry), parallel to the course of a river in its floodplain or along low-lying coastlines. The purpose of a levee is to keep the course of rivers from changing and to protect against flooding of the area adjoining the river or coast. Levees can be naturally occurring ridge structures that form next to the bank of a river, or be an artificially constructed fill dirt, fill or wall that regulates water levels. Ancient civilizations in the Indus Valley civilisation, Indus Valley, ancient Egypt, Mesopotamia and China all built levees. Today, levees can be found around the world, and failures of levees due to erosion or other causes can be major disasters. Etymology Speakers of American English (notably in the Midwestern United States, Midwest and Deep South) u ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Louisiana State University
Louisiana State University (officially Louisiana State University and Agricultural and Mechanical College, commonly referred to as LSU) is a public land-grant research university in Baton Rouge, Louisiana. The university was founded in 1860 near Pineville, Louisiana, under the name Louisiana State Seminary of Learning & Military Academy. The current LSU main campus was dedicated in 1926, consists of more than 250 buildings constructed in the style of Italian Renaissance architect Andrea Palladio, and the main campus historic district occupies a plateau on the banks of the Mississippi River. LSU is the flagship school of the state of Louisiana, as well as the flagship institution of the Louisiana State University System, and is the most comprehensive university in Louisiana. In 2021, the university enrolled over 28,000 undergraduate and more than 4,500 graduate students in 14 schools and colleges. Several of LSU's graduate schools, such as the E. J. Ourso College of Business ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
