X zone definition

X zone means the area where the flood hazard is less than that in the SFHA. Shaded X zones shown on recent FIRMs (B zones on older FIRMs) designate areas subject to inundation by the flood with a 0.2 percent chance of being equaled or exceeded (the 500-year flood). Unshaded X zones (C zones on older FIRMs) designate areas where the annual exceedance probability of flooding is less than 0.2 percent.
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X zone means the area where the flood hazard is less than that in the SFHA. Shaded X shown on recent FIRMs (B on older FIRMs) designate areas subject to inundation by the flood with a 0.2-percent annual probability of being equaled or exceeded (aka 500-year flood). Unshaded X (C on older FIRMs) designates areas where the annual exceedance probability of flooding is less than
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Examples of X zone in a sentence

  • An X zone is defined as areas determined to be outside the 500-year flood plain or areas of 500-year flood; areas of a 100-year flood with average depths of less than 1 foot or with drainage ares less than 1 square mile; and ares protected by levees form 100-year flood.

  • An X zone is defined as areas determined to be outside the 500-year flood plain or areas of 500-year flood; areas of a 100-year flood with average depths of less than 1 foot or with drainage areas less than 1 square mile; and areas protected by levees from 100-year flood.

  • When not in use they must be stored in an un- shaded X zone or must be protected to the 500 year (0.2% annual chance) flood elevation if placed in a Special Flood Hazard Area (SFHA) or shaded X zone.

  • When not in use they must be stored in an un-shaded X zone or must be protected to the 500 years (0.2% annual chance) flood elevation if placed in a Special Flood Hazard Area (SFHA) or shaded X zone.

Related to X zone

  • Use Zone means the area beneath and surrounding a play structure or piece of equipment that is designated for unrestricted movement around the equipment, and onto which a child falling from or exiting the equipment could be expected to land.

  • Buffer Zone means an area designated to be left along roads or other features in which there will be no cutting.

  • overlay zone means a mapped overlay superimposed on one or more established zoning areas which may be used to impose supplemental restrictions on uses in these areas or permit uses otherwise disallowed;

  • Saturated zone or "zone of saturation" means that part of the earth's crust in which all voids are filled with water.

  • Mixing zone means a limited area of a surface water body or aquifer where initial dilution of a discharge takes place and where certain water quality standards may be exceeded.