It receives fresh water from the Tangipahoa, Tchefuncte, Tickfaw, Amite, and Bogue Falaya rivers, and from Bayou Lacombe and Bayou Chinchuba. Lake Pontchartrain bridge holds the Guinness World record for the longest bridge over water in the USA since 1969. Bonnet Carré Spillway diverts water from the Mississippi into the lake during times of river flooding. Norgress, R. E. (1947). The Nature Conservancy, LA. It covers an area of 630 square miles. The shorter Fort Pike Bridge crossing the outlet to Lake Borgne remained intact. The bottomland hardwood forest and cypress swamp are suffering from lack of fresh water input and sediment deposition owing to the levees upstream from the lake. The water boundaries were defined in 1979 (see list of parishes in Louisiana). So a flat bottom boat is almost essential. Lake Pontchartrain is 630 square miles in area and is approximately 25 miles across north to south. It is thought that this name originates from it being where a bridge (French: pont) crossed the river Mauldre on the ancient route from Lutèce to Chartres (chartrain). 2010. Aerial photography suggests that 25 billion US gallons (95,000,000 m3) of water covered New Orleans as of September 2, which equals about 2% of Lake Pontchartrain's volume. Located in southeastern Louisiana, the lake is 40 miles long and has a maximum width of 25 miles. Keddy, P.A., D. Campbell, T. McFalls, G. Shaffer, R. Moreau, C. Dranguet, and R. Heleniak. The length of the bridge is 23.83 miles. [4] It comprises more than 125,000 acres of wetland, including bottomland hardwoods and cypress swamps (although these have been severely degraded by past logging), along with a complex mixture of herbaceous wetlands including fresh, intermediate and brackish marsh.[5]. Keddy, P.A., D. Campbell, T. McFalls, G. Shaffer, R. Moreau, C. Dranguet, and R. Heleniak. Table 2. 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 lake is crossed by the Lake Pontchartrain Causeway, the longest continuous bridge over water in the world. On September 15, 1978, six-year-old Benjamin Daly, along with the pilot, died when a private plane his parents had chartered crashed into the lake. [2], Lake Pontchartrain is named for Louis Phélypeaux, comte de Pontchartrain. 2007. [13][14] The United States Geological Survey is currently 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. NOAA Hurricane Forecast Maps Are Often Misinterpreted — Here's How to Read Them. Tidal exchange with Lake Pontchartrain through Pass Manchac is a more significant influence on Lake Maurepas’s volumetric and elevation characteristics than tributary freshwater discharge. Lake Pontchartrain is the largest inland body of water in Louisiana at 630 square miles. A COVID-19 Prophecy: Did Nostradamus Have a Prediction About This Apocalyptic Year? January is the sunniest at 0in / 0mm and July the wettest month with 2.6in / 67mm. The cause of death was homicide by, This page was last edited on 1 November 2020, at 00:26. Some canal walls leaked underneath, because the wall foundations were not deep enough in peat-subsoil to withstand the pressure of higher water.[16]. Lake Pontchartrain forms the northern boundary of the city of New Orleans, which is coterminous with Orleans Parish, and the northern boundary of its two largest suburbs, Metairie and Kenner; as well as forming the northern boundaries of Jefferson Parish and Saint Charles Parish, and much of the northern and eastern boundaries of Saint John the Baptist Parish. 497 p. Effects of Hurricane Katrina in New Orleans, "Oil from Gulf spill seeps into New Orleans' Lake Pontchartrain", Louisiana Department of Culture, Recreation & Tourism, "Environmental Atlas of the Lake Pontchartrain Basin", "The Lake Pontchartrain Basin: Louisiana's Troubled Urban Estuary", "Experts Say Faulty Levees Caused Much of Flooding", "No one can say they didn't see it coming", "New Orleans Levees Not Built for Worst Case Events", Broussard says he didn't send pump operators away - Kenner Bulletin - NOLA.com, "Quick, coordinated efforts reduce environmental impact on Lake Pontchartrain", "A twin-engine plane carrying three people on a flight from Nebraska crashed into Lake Pontchartrain in heavy fog Thursday while on approach to New Orleans Lakefront Airport", "Three Killed in Crash of a Plane In Lake Near New Orleans Field", "Body Discovered--Two Decade Mystery Begins", "Navy pilot presumed dead after crash in Lake Pontchartrain", United States Geological Survey Lake Pontchartrain Fact Sheet, Real-time water data for Lake Pontchartrain, USGS Environmental Atlas of Lake Pontchartrain, Washington Post article alleging levee faults, 21 September 2005, National Geographic article about the levees, 2 September 2005, Salon article about disaster predictions, 31 August 2005, U.S. Geological Survey article about the Lake Pontchartrain Basin, 3 November 1995, BBC article about environmental effects on the lake after the flooding of New Orleans, 8 September 2005, https://en.wikipedia.org/w/index.php?title=Lake_Pontchartrain&oldid=986459361, Bodies of water of Jefferson Parish, Louisiana, Bodies of water of Orleans Parish, Louisiana, Bodies of water of St. Charles Parish, Louisiana, Bodies of water of St. John the Baptist Parish, Louisiana, Bodies of water of St. Tammany Parish, Louisiana, Bodies of water of Tangipahoa Parish, Louisiana, Tourist attractions in Jefferson Parish, Louisiana, Tourist attractions in St. Charles Parish, Louisiana, Tourist attractions in St. John the Baptist Parish, Louisiana, Tourist attractions in St. Tammany Parish, Louisiana, Tourist attractions in Tangipahoa Parish, Louisiana, Articles with dead external links from July 2018, Articles with permanently dead external links, Articles using infobox body of water without alt, Articles using infobox body of water without alt bathymetry, Articles containing Spanish-language text, Articles with unsourced statements from April 2019, Articles containing undetermined-language text, Articles with self-published sources from December 2017, Articles with unsourced statements from May 2008, Creative Commons Attribution-ShareAlike License. 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 (0.6 m) of water back into that neighborhood. On June 16, 1964, a Trailways bus plunged off the Lake Pontchartrain Causeway into Lake Pontchartrain, killing 6. Environmental Reviews 15: 1- 35. Environmental Reviews 15: 1- 35. Marshes, for example, are turning to open water, and cypress swamps are being killed by salt water intrusion. Selected species, like the paddlefish and alligator snapping turtle, would benefit from reduced harvesting. Perrin, J.M. [citation needed] In 1699, French explorer Pierre Le Moyne d'Iberville renamed it Pontchartrain after Louis Phélypeaux, comte de Pontchartrain. It is one of the largest wetlands along the Gulf Coast of North America. 152 reviews . Conservation Area Plan for the Lake Pontchartrain Estuary. 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