The Louisiana Legislature mandates an updated plan every five years. The planners use the Coastal Louisiana Risk Assessment (CLARA) model to systematically evaluate flood risk from the many types of storm events that may occur now or in the future. The CLARA model was developed by Johnson and colleagues at RAND Corporation, and accounts for uncertainty in climate, environmental, and economic conditions.

New Orleans Times-Picayune article describes the state plan's main projects and risk reduction impacts

Johnson model for flood risk assessment