X Zone relates to newer Flood Insurance Rate Maps, which show B and C Zones (see above) as X Zone. The shaded X Zone corresponds to a B Zone and the unshaded X Zone corresponds to a C Zone. (FEMA, Reducing Damage from Localized Flooding, 2005, viii)
B. Wayne Blanchard, Guide To Emergency Management and Related Terms, Definitions, Concepts, Acronyms, Organizations, Programs, Guidance, Executive Orders & Legislation, A Tutorial on Emergency Management, Broadly Defined, Past and Present, B. Wayne Blanchard, USA 2007 (Last Modified 2008). http://training.fema.gov/EMIWeb/edu/docs/terms%20a nd%20definitions/Terms%20and%20Definitions.pdf, (Emr Mgt/ ND and Other Dzstr - Amer) {11}