New Orleans East Bank 
Location
City, County, and State of the levee system. Determined by the levee alignment location not the leveed area.
New Orleans, Orleans Parish, Louisiana
System ID
Unique identifier code for the levee system using 10 or 12 numbers in length.
4405000556
Operation and Maintenance Organization
Entity responsible for day-to-day management of the levee.
Southeast Louisiana Flood Protection Authority - EastPontchartrain Levee DistrictUSACE - New Orleans DistrictSoutheast Louisiana Flood Protection Authority - EastSoutheast Louisiana Flood Protection Authority - EastSoutheast Louisiana Flood Protection Authority - EastSoutheast Louisiana Flood Protection Authority - East
Floodplain Management
Entities responsible for regulating activities that occur in areas prone to flooding.
FEMA Region 6
Oversight Organization
Entity responsible for oversight of the levee and ensuring it is maintained.
USACE - New Orleans District
Last Assesment Date Last Risk Assessment or Formal Inspection.
5/3/2018
Data Last Updated Date any of this information for the system has been updated.
2/13/2025
Levee Length
Combine length of all the levee system features including the embankments, floodwalls, closures where they exist for this system.
179.259 Miles Average Levee Height
The average height of the levee system. The levee profile viewer on the mapping window will show the actual levee height values for the length of the levee if available.
22 Feet Year Levee Constructed Year levee system was fully completed as a flood reduction project.
No Data Summary
General text description of the levee system with a summary of why the levee is there, and the benefits it provides.
The New Orleans East Bank Levee System is approximately 176 miles and is made up of Mississippi River Levees (MRL) and the Hurricane and Storm Damage Risk Reduction System (HSDRRS). The MRL was federally funded and constructed. The MRL is locally operated and maintained; however, the U.S. Army Corps of Engineers (USACE) has major maintenance responsibility. The HSDRRS is 100% locally operated and maintained except for the Bonnet Carre guide levee which is maintained by USACE. The HSDRRS levees were federally constructed but cost share funded. The Levee System is made up of 7 segments extending through 5 different parishes and maintained by 3 different levee districts. The Bonnet Carre lower guide levee segment which makes up the far western end of the system is maintained by USACE. The system totals approximately 99 miles of levees and 77 miles of floodwalls. USACE began to construct the MRL in 1927, while the HSDRRS levees began construction anywhere from 1960’s to the 1980’s. The new HSDRRS levees were completed to 100-year risk reduction in 2011. The highest loading for a riverine event took place in 1927 and for a hurricane event was Hurricane Katrina in 2005.
Performance & Condition
General text description of the historical and anticipated performance of the levee, the people and property benefitting from the levee and who may be at risk of flooding, and actions to address areas of concern.
The New Orleans East Bank Levee System is classified as Moderate to High risk due to the high consequences associated with the system in combination with the likelihood of overtopping or breach. Risks are driven by the fact that, if overtopped or breached, both commercial and residential areas in St. Charles, Orleans, Jefferson, and St. Bernard parishes would be inundated with water. Another risk driver of the levee system is a breach prior to overtopping due to the lack of armoring. Armoring for all of the HSDRRS levees with High Performance Turf Reinforcement Mats are currently being installed to add resiliency to the levees. There were breach points to the HSDRRS system during Hurricane Katrina in 2005. Refurbishments to the system were completed in 2011. The system is designed to reduce the risk associated with a storm surge event that has a one-percent chance of occurring every year, or a 100-year storm surge. The levees are in good condition and expected to perform well under future loads.
Flooding Hazard
Historic Loading by Percentage of Height
Representative loading associated with historical flood information as a percentage of the levee height or overtopping.
Representative loading associated with historical flood information as a percentage of the levee height or overtopping.
No historic loading data available at this time