| Lake Pontchartrain | |
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| Location | Louisiana |
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| Lake type | salt-water lake |
| Basin countries | United States |
| Surface area | 630 sq mi (1630 km²) |
| Settlements | New Orleans, Metairie, Kenner, Mandeville, Slidell, Madisonville, etc. The Landsat program is the longest running enterprise for acquisition of imagery of Earth from space The State of Louisiana ( or, État de Louisiane, pronounced) is a state located in the southern region of the United States of America A lake (from Latin lacus) is a Terrain feature (or Physical feature) a body of Liquid on the surface of a world that is localized to the Seawater is Water from a Sea or Ocean. On average seawater in the world's oceans has a Salinity of about 3 A drainage basin is an extent of Land where Water from Rain or Snow melt drains downhill into a body of water such as a River, New Orleans (nʲuːˈɔrliənz nʲuːˈɔrlənz French: La Nouvelle-Orléans) is a major United States port city and the largest city in Louisiana Metairie (local pronunciations /ˈmɛtəɹi/ /ˈmɛtɹi/ is a Census-designated place (CDP in Jefferson Parish, Louisiana, United States Kenner is a city in Jefferson Parish, Louisiana, United States, and a suburb of New Orleans. Mandeville is a City in St Tammany Parish, Louisiana, United States. Madisonville is a Town in St Tammany Parish, Louisiana, United States. |
Lake Pontchartrain (pronounced /ˈpɒntʃətreɪn/ in English; Lac Pontchartrain, IPA [lak pɔ̃ʃaʀtʀɛ̃] in French) is a brackish lake located in southeastern Louisiana. Mandeville is a City in St Tammany Parish, Louisiana, United States. French ( français,) is a Romance language spoken around the world by 118 million people as a native language and by about 180 to 260 million people A lake (from Latin lacus) is a Terrain feature (or Physical feature) a body of Liquid on the surface of a world that is localized to the The State of Louisiana ( or, État de Louisiane, pronounced) is a state located in the southern region of the United States of America It is the second largest salt-water lake in the United States, after the Great Salt Lake in Utah, and the largest lake in Louisiana. Seawater is Water from a Sea or Ocean. On average seawater in the world's oceans has a Salinity of about 3 The United States of America —commonly referred to as the Great Salt Lake, located in the northern part of the US state of Utah, is the largest salt lake in the western hemisphere the fourth-largest terminal The State of Utah (ˈjuːtɔː or) is a western state of the United States. It covers an area of 630 square miles (1630 square km) with an average depth of 12 to 14 feet (about 4 meters). Some shipping channels are kept deeper through dredging. Dredging is an Excavation activity or operation usually carried out at least partly underwater in shallow seas or Fresh water areas with the purpose of It is roughly oval in shape, about 40 miles (64 km) wide and 24 miles (39 km) from south to north.
The south shore forms the northern boundary of the city of New Orleans, and its two largest suburbs Metairie and Kenner. New Orleans (nʲuːˈɔrliənz nʲuːˈɔrlənz French: La Nouvelle-Orléans) is a major United States port city and the largest city in Louisiana Metairie (local pronunciations /ˈmɛtəɹi/ /ˈmɛtɹi/ is a Census-designated place (CDP in Jefferson Parish, Louisiana, United States Kenner is a city in Jefferson Parish, Louisiana, United States, and a suburb of New Orleans. On the north shore of Lake Pontchartrain is an area called The North Shore which contains some of the metropolitan area's wealthiest suburbs. The largest are the cities of Mandeville, Covington, Madisonville and Slidell. Mandeville is a City in St Tammany Parish, Louisiana, United States. Covington is a city in and the Parish seat of St Tammany Parish, Louisiana, United States. Madisonville is a Town in St Tammany Parish, Louisiana, United States.
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Lake Pontchartrain is named after Louis Phélypeaux, comte de Pontchartrain, the French Minister of the Marine, chancellor of France and minister of finance during the reign of France's "Sun King," Louis XIV, for whom Louisiana is named. Louis Phélypeaux (1643 &ndash 1727 marquis de Phélypeaux (1667 comte de Maurepas (1687 comte de Pontchartrain (1699 known as the chancellor de Pontchartrain This article is about the country For a topic outline on this subject see List of basic France topics. Chancellor or chancellour (archaic ( Latin: cancellarius) is an official Title used in countries whose civilization has arisen The finance minister is a Cabinet position in a Government. A minister of Finance (also called financial affairs the treasury the economy or economic Early years Birth and ancestry Louis XIV was born in the Château de Saint-Germain-en-Laye on September 5 1638 and bore the Heir apparent
Lake Pontchartrain is not a true lake but an estuary connected to the Gulf of Mexico via The Rigolets strait (known locally as "the Rigolets") and Chef Menteur Pass into Lake Borgne another large lagoon, and therefore experiences small tidal changes. An estuary is a semi-enclosed Coastal body of Water with one or more Rivers or Streams flowing into it and with a free connection to the open The Gulf of Mexico ( Spanish: Golfo de México) is the ninth largest Body of water in the world The Rigolets is a 129 kilometer (8 mi long Strait in Louisiana. A strait is a narrow navigable Channel of water that connects two larger navigable bodies of water The Chef Menteur Pass is a narrow natural waterway which along with the Rigolets, connects Lake Pontchartrain and Lake Borgne in New Orleans Louisiana Lake Borgne is a Lagoon in eastern Louisiana of the Gulf of Mexico Characteristics A tide is a repeated cycle of sea level changes in the following stages Over several hours the water rises or advances up a beach in the flood It receives fresh water from the Tangipahoa, Tchefuncte, Tickfaw, Amite, and Bogue Falaya Rivers, and from Bayou Lacombe and Bayou Chinchuba. The Tangipahoa River (tænˈdʒɪpəhoʊə in English; tan-juh-puh-HO-uh originates northwest of McComb in southwest Mississippi, and runs south 110 The Tchefuncte River (chuh-FUNK-tuh drains into Lake Pontchartrain in Louisiana in the United States. The Tickfaw River (tɪkfɔː in English) runs 105 miles from Amite County in southwest Mississippi to Livingston Parish in southeast The Amite River is a Tributary of Lake Maurepas in Mississippi and Louisiana in the United States. The Bogue Falaya, also known as the Bogue Falaya River, is a River, about 23  Miles nbsp(37 
Salinity varies from negligible at the northern cusp west of Mandeville up to nearly half the salinity of seawater at its eastern bulge near Interstate 10. Salinity is the Saltiness or dissolved salt content of a body of Water. Seawater is Water from a Sea or Ocean. On average seawater in the world's oceans has a Salinity of about 3 Interstate 10, a major transcontinental Interstate Highway in the Southern U Lake Maurepas, a true fresh water lake, connects with Lake Pontchartrain on the west via Pass Manchac. Lake Maurepas is a Brackish water Lake in southeastern Louisiana. The Industrial Canal connects the Mississippi River with the lake at New Orleans. The Industrial Canal is a 55 mile (9 km Waterway in New Orleans Louisiana, United States. The Mississippi River is the second longest River in the United States, with a length of from its source in Lake Itasca in Minnesota to New Orleans (nʲuːˈɔrliənz nʲuːˈɔrlənz French: La Nouvelle-Orléans) is a major United States port city and the largest city in Louisiana Bonnet Carré Spillway diverts water from the Mississippi into the lake during times of river flooding. Bonnet Carre Spillway aerial view westjpg|thumb|The opening to the Bonnet Carré Spillway on the Mississippi River A flood is an overflow of an expanse of water that submerges land a deluge
The lake was created 2,600 to 4,000 years ago as the evolving Mississippi River Delta formed its southern and eastern shorelines with alluvial deposits. The Mississippi River Delta is the modern area of land (the River delta) built up by Alluvium deposited by the Mississippi River as it slows Alluvium (from the Latin, alluvius, from alluere, "to wash against" is Soil or Sediments deposited by a river or other running [1] Its Native American name was Okwata ("Wide Water"). Native Americans in the United States are the indigenous peoples from the regions of North America now encompassed by the continental United States In 1699, French explorer Pierre Le Moyne d'Iberville, renamed it Pontchartrain after Louis Phélypeaux, comte de Pontchartrain. This article is about the country For a topic outline on this subject see List of basic France topics. Pierre Le Moyne d'Iberville ]] (b 16 July 1661 - d (probably 9 July 1706)founder of the colony of French Louisiana, was born at Louis Phélypeaux (1643 &ndash 1727 marquis de Phélypeaux (1667 comte de Maurepas (1687 comte de Pontchartrain (1699 known as the chancellor de Pontchartrain
Human habitation of the region began at least 3,500 years ago, but increased rapidly with the arrival of Europeans about 300 years ago. The current population is over 1. 5 million. The United States Geological Survey is monitoring the environmental effects of shoreline erosion, loss of wetlands, pollution from urban areas and agriculture, saltwater intrusion from artificial waterways, dredging, basin subsidence and faulting, storms and sea-level rise, and freshwater diversion from the Mississippi and other rivers. The United States Geological Survey ( USGS) is a scientific agency of the United States government. Erosion is the carrying away or displacement of solids ( Sediment, Soil, rock and other particles usually by the agents of currents such as wind A wetland is an area of Land consisting of Soil that is Saturated with Moisture, such as a Swamp, Marsh, or Bog Pollution is the introduction of contaminants into an environment that causes instability disorder harm or discomfort to the physical systems or living organisms they are in Saltwater intrusion is a process that occurs in virtually all Coastal Aquifers where they are in Hydraulic continuity with Seawater. Dredging is an Excavation activity or operation usually carried out at least partly underwater in shallow seas or Fresh water areas with the purpose of Mean sea level (MSL is the average (mean height of the Sea, with reference to a suitable reference surface [2]
New Orleans was established at a Native American portage between the Mississippi River and Lake Pontchartrain. Portage refers to the practice of carrying a Canoe or other Boat over land to avoid an obstacle on the water route (such as Rapids or a Waterfall The lake provides numerous recreational activities for people in New Orleans and is also home to the Southern Yacht Club. Sailing Southern Yacht Club is an extremely active sailing club and is the organizing body for the Race to the Coast the oldest point to point Regatta in the Western In the 1920s the Industrial Canal in the eastern part of the city opened, providing a direct navigable water connection, with locks, between the Mississippi River and the lake. The Industrial Canal is a 55 mile (9 km Waterway in New Orleans Louisiana, United States. A lock is a device for raising and lowering boats between stretches of water of different levels on river and canal Waterways. In the same decade, a project dredging new land from the lake shore behind a new concrete floodwall began; this would result in an expansion of the city into the former swamp between Metairie/Gentilly Ridges and the lakefront. The Lake Pontchartrain Causeway was constructed in the 1950s and 1960s, connecting New Orleans (by way of Metairie) with Mandeville and bisecting the lake in a north-northeast line. The Lake Pontchartrain Causeway, or the Causeway, consists of two parallel bridges crossing Lake Pontchartrain in southern Louisiana. At 24 miles (39 km), the Causeway is the longest bridge over a body of water in the world.
During hurricanes, a storm surge can build up in Lake Pontchartrain. A tropical cyclone is a storm system characterized by a low pressure center and numerous Thunderstorms that produce strong winds and Flooding Storm surge or tidal surge is an offshore rise of water associated with a low pressure weather system typically a Tropical cyclone. Wind pushes water into the lake from the Gulf of Mexico as a hurricane approaches from the south, and from there it can spill into New Orleans.
A hurricane in September, 1947 flooded the city, most of which is a few feet/meters below sea level (and sinking). After the storm, hurricane-protection levees were built along Lake Pontchartrain's south shore to protect the city. Dike (constructionEmbankmentA levee, levée, dike (or dyke) embankment, floodbank or stopbank is a natural or artificial When a storm surge of 10 feet (3 m) from Hurricane Betsy left much of the city under water in 1965, the levees encircling the city and outlying parishes were raised to heights of 14 to 23 feet (4-7 m). Storm surge or tidal surge is an offshore rise of water associated with a low pressure weather system typically a Tropical cyclone. Hurricane Betsy was a powerful Hurricane of the 1965 Atlantic hurricane season which caused enormous damage in the Bahamas, Florida, and A county is a Land area of Regional Government within a larger State. Due to cost concerns, the levees were built to protect against only a Category 3 hurricane; however, the levees initially withstood the Category 5 storm surge of Hurricane Katrina (August 2005), which only slowed to Category 3 winds within hours of landfall (due to a last-minute eyewall replacement cycle). Hurricane Katrina of the 2005 Atlantic hurricane season was the costliest hurricane, as well as one of the five deadliest in the history of the United States The eye is a region of mostly calm Weather found at the center of strong Tropical cyclones The eye of a Storm is a roughly circular area and typically 30–65 km
Experts using computer modeling at Louisiana State University subsequent to Hurricane Katrina have concluded that the levees were never topped but rather faulty design, inadequate construction, or some combination of the two were responsible for the flooding of most of New Orleans: some canal walls leaked underneath because the wall foundations were not deep enough in peat-subsoil to withstand the pressure of higher water. Louisiana State University and Agricultural and Mechanical College, generally known as Louisiana State University or LSU, is a public, Coeducational Hurricane Katrina of the 2005 Atlantic hurricane season was the costliest hurricane, as well as one of the five deadliest in the history of the United States [3]
Congress failed to fully fund an upgrade requested during the 1990s by the Army Corps of Engineers, and funding was cut in 2003-04 despite a 2001 study by the Federal Emergency Management Agency warning that a hurricane in New Orleans was one of the country’s 3 most likely disasters. The United States Congress is the bicameral Legislature of the federal government of the United States of America, consisting of two houses The United States Army Corps of Engineers ( USACE) is a federal agency and a major Army command made up of some 34600 Civilian and 650 Military personnel Year 2003 ( MMIII) was a Common year starting on Wednesday of the Gregorian calendar. The purpose of FEMA is to coordinate the response to a Disaster which has occurred in the United States and which overwhelms the resources of local and state authorities [4] Raising and reinforcing the levees to resist a Category 5 hurricane might take 25 years to complete. [5] Some estimates place the cost at $25 billion.
When Hurricane Katrina reached Category 5 in 2005, some experts predicted that the levee system might fail completely if the storm passed close to the city. Hurricane Katrina of the 2005 Atlantic hurricane season was the costliest hurricane, as well as one of the five deadliest in the history of the United States Although Katrina weakened to a Category 3 before making landfall on August 29 (with only Category 1-2 strength winds in New Orleans on the weaker side of the eye of the hurricane), the outlying New Orleans East along south Lake Pontchartrain was in the eyewall with winds, preceding the eye, nearly as strong as Bay St. Louis, MS. Events 708 - Copper coins are minted in Japan for the first time (Traditional Japanese date: August 10, 708) Eastern New Orleans is a large section of the city of New Orleans Louisiana. Bay Saint Louis is a city located in Hancock County Mississippi. Canals near Chalmette began leaking at 8 am, and some levees/canals, designed to withstand Category 3 storms, suffered multiple breaks the following day (see Effect of Hurricane Katrina on New Orleans), flooding 80% of the city. Chalmette is a Census-designated place (CDP in and the Parish seat of St The effects of Hurricane Katrina in New Orleans were shattering and long-lasting
The walls of the Industrial Canal were breached by storm surge via the Mississippi River Gulf Outlet, while the 17th Street Canal and London Avenue Canal experienced catastrophic breaches, even though water levels never topped their flood walls. The Industrial Canal is a 55 mile (9 km Waterway in New Orleans Louisiana, United States. Storm surge or tidal surge is an offshore rise of water associated with a low pressure weather system typically a Tropical cyclone. The Mississippi River-Gulf Outlet Canal (also known as MRGO MR-GO or "Mr The 17th Street Canal is a drainage Canal in Greater New Orleans, Louisiana that flows into Lake Pontchartrain. The London Avenue Canal is a drainage Canal in New Orleans Louisiana, used for pumping rain water into Lake Pontchartrain. Louisiana State University experts presented evidence that some of these structures might have had design flaws or faulty construction. Louisiana State University and Agricultural and Mechanical College, generally known as Louisiana State University or LSU, is a public, Coeducational [6]
There are indications that the soft earth and peat underlying canal walls may have given way. Peat is an accumulation of partially Decayed Vegetation matter. In the weeks before Katrina, tests of salinity in seepage pools near canals showed them to be lake water, not fresh water from broken mains. Salinity is the Saltiness or dissolved salt content of a body of Water. Soil mechanics is a discipline that applies principles of Engineering mechanics, e Freshwater is a word that refers to bodies of water such as Ponds lakes rivers and streams containing low concentrations of dissolved Salts and other Total dissolved The 5. 5 mile (9 km) long I-10 Twin Span Bridge heading northeast between New Orleans and Slidell was destroyed. The I-10 Twin Span Bridge, known locally as the Twin Spans, consists of two parallel Trestle bridges These parallel bridges cross the eastern end of Lake The shorter Fort Pike Bridge crossing the outlet to Lake Borgne remained intact. Fort Pike is a decommissioned 19th century Fort which formerly guarded the Rigolets pass in Louisiana.
Much of the northern sector of the suburban areas of Metairie and Kenner was flooded with up to 2-3 feet of water. In this area, flooding was not the result of levee overtopping, but was due to a decision by the governmental administration of Jefferson Parish to abandon the levee-aligned drainage pumping stations. This resulted in the reverse flow of lake water through the pumping stations into drainage canals which subsequently overflowed, causing extensive flooding of the area between 1-10 and the lakefront. When the pump operators were returned to their stations, water was drained out of Metairie and Kenner in less than a day, in some cases, only a few hours.
On September 5, 2005, the Army Corps of Engineers started to fix levee breaches by dropping huge sandbags from Chinook helicopters. Events 1590 - Alexander Farnese 's army forces Henry IV of France to raise the siege of Paris. WikipediaWikiProject Aircraft. Please see WikipediaWikiProject Aircraft/page content for recommended layout The London Avenue Canal and Industrial Canal were blocked at the lake as permanent repairs started. On September 6, the Corps began pumping flood water back into the lake after seven days in the streets of New Orleans. Events 3114 BC - According to the Proleptic Julian calendar the current era in the Maya Long Count Calendar started Because it was fouled with dead animals, sewage, heavy metals, petrochemicals, and other dangerous substances, the Army Corps worked with the US EPA and Louisiana Department of Environmental Quality (LDEQ) to avoid major contamination and eutrophication of the lake. Petrochemicals are chemical products made from raw materials of Petroleum or other Hydrocarbon origin Eutrophication is an increase in chemical Nutrients -- typically compounds containing Nitrogen or Phosphorus -- in an Ecosystem, and may occur [7]
Aerial photography suggests that 25 billion gallons (95 bn liters) of water covered New Orleans as of September 2, which equals about 2% of Lake Pontchartrain's volume. Events 44 BC - Pharaoh Cleopatra VII of Egypt declares her son co-ruler as Ptolemy XV Caesarion. Due to a lack of electricity, the city was unable to treat the water before pumping it into the lake. It is unclear how long the pollution will persist and what its environmental damage to the lake will be, or the hazards from the mold and contaminated mud remaining in the city. Pollution is the introduction of contaminants into an environment that causes instability disorder harm or discomfort to the physical systems or living organisms they are in WikipediaManual_of_Style#National_varieties_of_English --> Molds (or
On September 24, 2005, Hurricane Rita did not breach the temporary repairs in the main part of the city, but the repair on the Industrial Canal wall in the lower 9th ward was breached, allowing about 2 feet of water back into that neighborhood. Events 622 - Prophet Muhammad completes his hegira from Mecca to Medina. Hurricane Rita was the fourth-most intense Atlantic hurricane ever recorded and the most intense Tropical cyclone ever observed in the Gulf of Mexico