Zone AO definition

Zone AO means certain areas subject to one percent (1%) chance flooding in which base flood elevations range from one to three feet (1’ – 3’) above the "highest adjacent grade"; a clearly defined channel does not exist; the path of flooding is unpredictable and indeterminate; and velocity flow may be evident. If there is no depth number on the Flood Insurance Rate Map (FIRM) for Zone AO, the base flood elevation shall be two feet (2’) above the "highest adjacent grade." Where the Floodplain Administrator has knowledge that the one percent (1%) chance base flood elevation will be greater than two feet (2’) above the "highest adjacent grade", the Floodplain Administrator shall use that known one percent (1%) chance flood elevation in applying the provisions thereof. All the terms used in this Chapter and not defined in this Chapter shall be as defined in other Sections of this Title.
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Zone AO means area of special flood hazards having shallow water depths and/or unpredictable flow paths between one (1) and three (3) feet. (Velocity flow may be evident; such flooding is characterized by ponding or sheet flow).
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Zone AO means certain areas subject to one hundred-year (100- year) flooding in which base flood elevations range from one to three feet (1 – 3’) above the "highest adjacent grade"; a clearly defined channel does not exist; the path of flooding is unpredictable and indeterminate; and velocity flow may be evident. If there is no depth number on the Flood Insurance Rate Map (FIRM) for Zone AO, the base flood elevation shall be two feet (2’) above the "highest adjacent grade." Where the Floodplain Administrator has knowledge that the one hundred-year (100-year) base flood elevation will be greater than two feet (2’) above the "highest adjacent grade", the Floodplain Administrator shall use that known one hundred-year (100-year) flood elevation in applying the provisions thereof. All the terms used in this Chapter and not defined in this Chapter shall be as defined in other Sections of this Title.
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Examples of Zone AO in a sentence

  • Potential impacts to floodplains and/or floodways are expected to result from fill within Line J-1’s Zone AO floodplain (1 percent annual chance of shallow flooding, with an average depth of 1 to 3 feet).

  • New construction and substantial improvement of any residential structure within or moved into the Flood Zone District, shall have the lowest floor (including basement), constructed at or above a point two (2) feet above the base flood elevation, or, if within Flood Zone AO, at or above a point two (2) feet above the depth number specified in feet on the Official Floodplain Maps (the depth number shall be at least two (2) feet if it is not specified on the maps).

  • The flood plain in the Project vicinity has a FEMA Zone AO designation, this FEMA designation encompasses undeveloped and developed properties and is defined as an area with a 1-percent- annual-chance of shallow flooding each year, usually in the form of sheet flow, with an average depth ranging from 1 to 3 feet and an average velocity of 5 feet per second (FPS).


More Definitions of Zone AO

Zone AO means certain areas subject to one percent chance flooding in which base flood elevations range from one to three feet above the "highest adjacent grade"; a clearly defined channel does not
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Related to Zone AO

  • Zone 3 means all of that part of the Lower Peninsula south of the line described in subdivision (bb).

  • Zone 2 means British Columbia and Alberta Receipt Points and Liquids Receipt Points at or upstream of the Blueberry Hill Compressor Station.

  • Zone 1 means Alberta Receipt Points and Liquids Receipt Points downstream of the Blueberry Hill Compressor Station.

  • Floodplain or flood-prone area means any land area susceptible to being inundated by water from any source. See "Flood or flooding."

  • Zone means Distribution Zone operates Operation & Maintenance (O&M) activities for a defined area in city divisions. Zone is a smallest business unit in Discom in city divisions. Zone works under city Division office.