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Hurricane and Storm Damage Risk Reduction System, Lake Pontchartrain and Vicinity - St. Charles Parish |
Official Project Name
Hurricane and Storm Damage Risk Reduction System, Lake Pontchartrain and Vicinity - St. Charles Parish
Location
The project is located in St. Charles Parish on the eastbank of the Mississippi River. The area includes the Bonnet Carré Spillway lower Guide Levee which runs from the Mississippi River until slightly north of Airline Highway (US Hwy 61) then turns east roughly paralleling Airline Hwy (US Hwy 61) to the Jefferson-St. Charles Parish boundary near the Louis Armstrong New Orleans International Airport.
Purpose
The structural features built by the Corps reduce the risk associated with a storm surge event that has a one percent chance of occurring in any given year, or a 100-year storm surge. The total construction value of the LPV-St. Charles Parish project is an estimated $100 million.
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Status
All 100-year level risk reduction features in the LPV-St. Charles Parish project area were completed in May 2011.
Benefit to the Community & Project Features
Construction on this portion of the project began in the late 1980's.
Authority
The Lake Pontchartrain, LA, and Vicinity Hurricane Protection Project (LP&V-HPP) was authorized by the Flood Control Act of 1965 and the Water Resources Development Acts of 1974, 1986, 1990, and 1992.
The HSDRRS includes five parishes and consists of 350 miles of levees and floodwalls; 73 non-Federal pumping stations; 3 canal closure structures with pumps; and 4 gated outlets. Following Hurricane Katrina, Congress fully authorized and funded the Hurricane and Storm Damage Risk Reduction System (HSDRRS) for southeast Louisiana.
Scope
Project features include: 8.5 miles of levee located north of Airline Highway (US Hwy. 61) that runs from the Bonnet Carré Spillway eastward to the foot of the east-west runway of the Louis Armstrong International airport. There are 5 drainage structures located at waterways that intersect the levee. Floodwalls have been built to accommodate 3 pipeline crossings. A floodwall was also built underneath the I-310 where the bridge supports did not allow for the construction of an earthen levee. A substantial floodgate was also built across the Canadian National Railroad at the end of the east-west runway.
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