Post-Katrina Hazard Mitigation on the Gulf Coast

The article reviews the major hazard mitigation measures considered for the Gulf Coast following hurricanes between 2005 and 2008, especially Hurricanes Katrina and Ike. Basic similarities among and between the hazard events are noted, along with a wide variety of efforts to eliminate or reduce risks from natural hazards in establishing mitigation as the major protector of affected areas. Intergovernmental collaboration, insurance reform, and public risk perception are included. Both the processes used and substantive policy options are examined. This includes attempts at system-wide solutions in dealing with the mullti-state region for recovery from devastation and providing greater resiliency toward further hazard events. Such themes as a comprehensive system approach and the use of risk informed decision making, communication of risk to the public, and the use of professional and technical expertise, are being used on the Gulf Coast. Risk informed decision making uses techniques and methods from risk analysis, scenario planning, and multi-criteria decision analysis. Stakeholders are incorporated into the development of alternatives conveyed to the public. Policy alternative include coastal restoration measures such as barrier island and shoreline restoration, structural engineering such as floodwalls and levees, and nonstructural options such as buyouts, relocation, and effective zoning and building codes. The most comprehensive approaches follow a multiple lines of defense strategy to combine the various types of risk reduction measures.