Hurricane Storm Damage Risk Reduction System2018-08-13T17:08:43+00:00

Hurricane Storm Damage Risk Reduction System

After Hurricane Katrina, the U.S. Army Corps of Engineers constructed the $14.5 billion Hurricane and Storm Damage Risk Reduction System (HSDRRS). It is one of the most technically advanced coastal flood protection systems in the world. Together, this system of barriers, sector gates, floodwalls, floodgates and levees provide a veritable “wall” around East Jefferson (EJLD), Orleans (OLD) and St. Bernard Parishes (LBBLD). The System significantly reduces the risk of flooding for over 1 million residents in the New Orleans Metropolitan area from a 100- year storm. The 100-year level means reduced flood risk from a storm surge that has a 1% chance of occurring or being exceeded in any given year.

The Flood Protection Authority manages all components of this system which include:

Infrastructure Component East Jefferson
Levee Districts
Orleans Levee District St Bernard Parishes Total
Permanent Canal Closures & Pumps 0 3 0 3
Levee/Floodwall (miles)* 28 107 57 192
Levee Turn Maintenance Area (acres) 730 1400 1400 3530
Flood Gates (land based) 12 200 32 244
Navigable Floodgates 0 6 2 8
Drainage Canals (miles) 0 0 56 56
Drainage Pump Stations 0 0 8 8

* Includes 1.8 mile long Lake Borgne Surge Barrier

After Hurricane Katrina, the U.S. Army Corps of Engineers constructed the $14.5 billion Hurricane and Storm Damage Risk Reduction System (HSDRRS). It is one of the most technically advanced coastal flood protection systems in the world. Together, this system of barriers, sector gates, floodwalls, floodgates and levees provide a veritable “wall” around East Jefferson (EJLD), Orleans (OLD) and St. Bernard Parishes (LBBLD). The System significantly reduces the risk of flooding for over 1 million residents in the New Orleans Metropolitan area from a 100- year storm. The 100-year level means reduced flood risk from a storm surge that has a 1% chance of occurring or being exceeded in any given year.

The Flood Protection Authority manages all components of this system which include:

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Infrastructure Component East Jefferson
Levee Districts
Orleans Levee District St Bernard Parishes Total
Permanent Canal Closures & Pumps 0 3 0 3
Levee/Floodwall (miles)* 28 107 57 192
Levee Turn Maintenance Area (acres) 730 1400 1400 3530
Flood Gates (land based) 12 200 32 244
Navigable Floodgates 0 6 2 8
Drainage Canals (miles) 0 0 56 56
Drainage Pump Stations 0 0 8 8

* Includes 1.8 mile long Lake Borgne Surge Barrier

Lake Borgne Surge Barrier

Bayou Dupre Sector Gate

Caernarvon Sector Gate

Bayou Bienvenue Sector Gate

Seabrook Floodgate Complex

Levees, Floodwalls, Floodgates

Permanent Canal Closures and Pumps