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4. New Orleans District
5. Environmental Documents

Title:	Final Individual Environmental Report, Lake Pontchartrain and Vicinity, Chalmette Loop Levee, St. Bernard Parish, Louisiana, IER #10
Authors:	United States. Army. Corps of Engineers. New Orleans District.
Keywords:	Pontchartrain, Lake (La.) Flood control Hurricanes Environmental management Wetlands
Publisher:	United States. Army. Corps of Engineers. New Orleans District.
Abstract:	The U.S. Army Corps of Engineers (USACE), Mississippi Valley Division, New Orleans District, has prepared this Individual Environmental Report (IER) # 10 to evaluate the potential impacts associated with the proposed flood protection improvements to the Lake Pontchartrain and Vicinity Hurricane and Storm Damage Risk Reduction System in St. Bernard Parish, Louisiana. The proposed action is located in southeastern Louisiana, southeast of New Orleans. The project area is located on the south bank of the Mississippi River Gulf Outlet, in the northwest portion of St. Bernard Parish. Dominant physiographic features in the vicinity include the drained and developed area between the Mississippi River and the Forty Arpent Canal, Mississippi River Gulf Outlet, Lake Borgne, and extensive marshes. The communities of Chalmette, Meraux, Violet, and others make up the area along the Mississippi River to be protected by the project. The proposed action is a project for improvement of the existing flood protection system of earthen levees and flood control structures commonly referred to as the “Chalmette Loop” in St. Bernard Parish, Louisiana. A large portion of the existing levee alignment is located parallel to the MRGO and then turns south crossing Highway 46 and west almost to Caernarvon and the Mississippi River. For the purposes of this IER, the Chalmette Loop LPV HSDRRS has been divided into four reaches, and each reach is identified by a project identification number. Figure 2 illustrates the location of LPV 145, LPV 146, LPV 147, and LPV148. The purpose of the proposed action is to provide 100-year level of risk reduction for St. Bernard Parish. The proposed action results from a defined need to reduce flood risk and storm damage to residences, businesses, and other infrastructure from hurricanes (100-year storm events) and other high water events. The majority of levees in this system were damaged due to overtopping during Hurricane Katrina. The damaged levees have been repaired to the pre-Katrina design height. The completed HSDRRS would lower the risk of harm to citizens and minimize damage to infrastructure during a storm event. The safety of people in the region is the highest priority of the CEMVN. The term “100-year level of risk reduction,” as it is used throughout this document, refers to a level of risk reduction that reduces the risk of hurricane surge and wave driven flooding that the New Orleans metropolitan area has a 1 percent chance of experiencing each year.
Description:	Individual Environmental Report
Rights:	Approved for Public Release; Distribution is Unlimited
URI:	https://hdl.handle.net/11681/35536
Size:	283 pages / 15.51 Mb
Types of Materials:	PDF/A
Appears in Collections:	Environmental Documents