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Area of moderate flood hazard is the land between the limits of the base flood and the 0.2-percent <br /> annual-chance (or 500-year) flood. They are shown on flood maps as zones labeled with the letters <br /> B or X (shaded). <br /> Area of future conditions flood hazard means the land area that would be inundated by the one <br /> percent annual chance (100-year) flood based on future conditions hydrology. <br /> Area of shallow flooding means a designated AO, AH, AR/AO, AR/AH, or VO zone on a <br /> community's flood insurance rate map (FIRM) with a one percent or greater annual chance of <br /> flooding to an average depth of one to three feet where a clearly defined channel does not exist, <br /> where the path of flooding is unpredictable and where velocity flow may be evident. Such flooding <br /> is characterized by ponding or sheet flow. <br /> Area of special flood hazard is the land in the floodplain within a community subject to a one <br /> percent or greater chance of flooding in any given year. The area may be designated as zone A on <br /> the flood hazard boundary map (FHBM). After detailed rate making has been completed in <br /> preparation for publication of the FIRM, zone A usually is refined into zones A, AO, AH, A1-30, AE, <br /> A99, AR, AR/A1-30, AR/AE, AR/AO, AR/AH, AR/A, VO, V1-30, VE or V. <br /> Base flood means the flood having a one percent chance of being equaled or exceeded in any <br /> given year. <br /> Basement means any area of the building having its floor subgrade (below ground level) on all <br /> sides. <br /> Breakaway wall means a wall that is not part of the structural support of the building and is <br /> intended through its design and construction to collapse under specific lateral loading forces, <br /> without causing damage to the elevated portion of the building or supporting foundation system. <br /> Coastal AE zone means the area subject to inundation by the one-percent annual-chance flood <br /> event that is also within the area of limited to moderate wave action as shown on the community's <br /> FIRM. <br /> Critical feature means an integral and readily identifiable part of a flood protection system, without <br /> which the flood protection provided by the entire system would be compromised. <br /> Development means any manmade change to improved and unimproved real estate, including but <br /> not limited to buildings or other structures, mining, dredging, filling, grading, paving, excavation or <br /> drilling operations or storage of equipment or materials. <br /> Elevated building means, for insurance purposes, a non-basement building, which has its lowest <br /> elevated floor, raised above ground level by foundation walls, shear walls, posts, piers, pilings, or <br /> columns. <br /> Existing construction means for the purposes of determining rates, structures for which the "start <br /> of construction" commenced before the effective date of the FIRM or before January 1, 1975, for <br /> FIRMs effective before that date. "Existing construction" may also be referred to as "existing <br /> structures." <br /> Existing manufactured home park or subdivision means a manufactured home park or subdivision <br /> for which the construction of facilities for servicing the lots on which the manufactured homes are <br /> 2 <br />