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: