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Hurricane and Storm Damage Risk Reduction System, Lake Pontchartrain and Vicinity - Orleans Parish |
Official Project Name
Hurricane and Storm Damage Risk Reduction System, Lake Pontchartrain and Vicinity - Orleans Parish
Location
The project is located in Orleans Parish in southeast Louisiana, generally in the vicinity of the city of New Orleans, and between the Mississippi River and Lake Pontchartrain.
Purpose
The project is designed to reduce risk among residents and businesses on the East Bank of Orleans Parish from a storm that has a one percent chance of occurring in any given year, or a 100-year storm. The project area stretches from the 17th Street Canal in the northwest to the Gulf Intracoastal Waterway (GIWW) at the Inner Harbor Navigation Canal-Lake Borgne Surge Barrier. The project area includes two separate drainage sub-basins: New Orleans Metro (17th Street Canal to Inner Harbor Navigation Canal) and New Orleans East (Orleans Parish east of the Inner Harbor Navigation Canal).
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CSX Railroad to Michoud Canal Levee in New Orleans East
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Status
New Orleans Metro
LPV 101.02 - 17th Street Canal to Topaz Street - This project currently defends against a storm surge that has a 1 percent chance of occurring in any given year, or a 100-year storm. The permanent 100-year level of risk reduction was attained on May 25, 2011. The project is scheduled to be completed in summer 2012.
LPV 103.01A1 - Orleans Avenue Canal to London Avenue Canal - This project currently defends against a storm surge that has a 1 percent chance of occurring in any given year, or a 100-year storm surge. The permanent 100-year level of risk reduction was attained on October 12, 2010. The project is scheduled to be completed in summer 2012.
LPV 103.01A2 - This project currently defends against a storm surge that has a 1 percent chance of occurring in any given year, or a 100-year storm surge. The permanent 100-year level of risk reduction was attained on May 13, 2011. The project is scheduled to be completed in spring 2012.
LPV 104.01A - London Avenue Canal to IHNC - This project currently defends against a storm surge that has a 1 percent chance of occurring in any given year, or a 100-year storm surge. The permanent 100-year level of risk reduction was attained on October 14, 2010. The project is scheduled to be completed in summer 2012.
LPV 104.02 - London Avenue Canal to IHNC - This project currently defends against a storm surge that has a 1 percent chance of occurring in any given year, or a 100-year storm surge. The permanent 100-year level of risk reduction was attained on May 11, 2011. The project is scheduled to be completed in spring 2012.
New Orleans East
LPV 105.01 - Lakefront Airport West Floodwall - This project currently defends against a storm surge that has a 1 percent chance of occurring in any given year, or a 100-year storm surge. The permanent 100-year level of risk reduction was attained on May 24, 2011. This project is scheduled to be completed in spring 2012.
LPV 105.02 - Lakefront Airport East Floodwall - This project currently defends against a storm surge that has a 1 percent chance of occurring in any given year, or a 100-year storm surge. The permanent 100-year level of risk reduction was attained on May 25, 2011. This project is scheduled to be completed in spring 2012.
LPV 106 - Lakefront Airport to Paris Road Floodwall – This project currently defends against a storm surge that has a 1 percent chance of occurring in any given year, or a 100-year storm surge. The permanent 100-year level of risk reduction was attained on March 14, 2011. This project is scheduled to be completed in summer 2012.
LPV 107 - Lincoln Beach Floodwall/Gate - This project currently defends against a storm surge that has a 1 percent chance of occurring in any given year, or a 100-year storm surge. The permanent 100-year level of risk reduction was attained on March 26, 2011. This project is scheduled to be completed in spring 2012.
LPV 108 - Paris Road to Southpoint Levee - This project currently defends against a storm surge that has a 1 percent chance of occurring in any given year, or a 100-year storm surge. The permanent 100-year level of risk reduction was attained on May 26, 2011. This project is scheduled to be completed in spring 2012.
LPV 109.02a&c - Southpoint to CSX Railroad Levee - This project currently defends against a storm surge that has a 1 percent chance of occurring in any given year, or a 100-year storm surge. The permanent 100-year level of risk reduction was attained on May 30, 2011. This project is scheduled to be completed in summer 2012.
LPV 109.02b - Interstate 10 crossing of Southpoint to CSX Railroad Levee - This project currently defends against a storm surge that has a 1 percent chance of occurring in any given year, or a 100-year storm surge. The permanent 100-year level of risk reduction was attained on March 25, 2011. This project is scheduled to be completed in spring 2012.
LPV 110 - CSX Railroad Crossing Floodgate - This project currently defends against a storm surge that has a 1 percent chance of occurring in any given year, or a 100-year storm surge. The permanent 100-year level of risk reduction was attained on May 25, 2011. This project is scheduled to be completed in summer 2012.
LPV 111.01 - CSX Railroad to Michoud Canal Levee - This project currently defends against a storm surge that has a 1 percent chance of occurring in any given year, or a 100-year storm surge. The permanent 100-year level of risk reduction was attained on June 1, 2011. This project is scheduled to be completed in summer 2012.
LPV 113 - Michoud Canal to Michoud Slip Floodwall - This project currently defends against a storm surge that has a 1 percent chance of occurring in any given year, or a 100-year storm surge. The permanent 100-year level of risk reduction was attained on September 15, 2010. This project is scheduled to be completed in summer 2012.
Benefit to the Community & Project Features
These projects will reduce 100-year storm surge risk on the East Bank of Orleans Parish
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
Orleans Metro
Construct new “T-wall” floodwalls and vehicle floodgates; raise existing levees and roadway ramps; and modify and strengthen existing floodgates, floodwalls and the Bayou St. John sector gate. All structural features in New Orleans Metro were built to an elevation between 16 and 22 feet above sea level.
New Orleans East
LPV 105 - Lakefront Airport: Replace existing floodwall to elevation 15.5 ft, raise levee to elevation 13 ft, and construct a floodgate (80 ft wide) across Downman Road.
LPV 106 - Citrus Levee: Raise levee to elevation 13 ft, install positive cutoff / drainage culverts for Citrus and Jahncke Pump Station.
LPV 107 - Lincoln Beach Levee & Gate: Replace the existing floodwall with a levee to elevation 13 ft and construct a new access gate to elevation 15 ft.
LPV 108 - Paris Road to South Point: Borrow Pit Development started in January 2009. Material is being excavated and processed at the Borrow Pit. Access road construction began last week.
LPV 109.02a - South Point to CSX Railroad: Raise levee to elevation 16.5 – 22 ft and reinforce levee with high strength geotextiles / wick drains.
LPV 109.02b - I-10 Crossing: Raise levee elevation to 16.5 – 22 ft and raise existing ramp elevation to 16ft.
LPV 109.02c - Highway 11 Crossing: Construct new floodwall to elevation 18.5 ft and a 50 ft wide gate with an alignment shift. Highway 90 Crossing: Construct new floodwall to elevation 22 ft and two gates with an alignment shift (gates are 38 ft wide each).
LPV 110 – CSX Railroad Gate: Construct new floodwall and gate with an alignment shift to elevation 30 ft.
LPV 111.01 – CSX Railroad to Michoud Canal: Raise existing levee to elevation 25 – 31.5 ft.
LPV 111.02 – Pump Station 15: Replace and raise existing floodwall at Pump Station 15 to elevation 34 ft.
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