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<br />DEFINITIONS <br /> <br />Unless specifically defined below, words or phrases used in this ordinance shall <br />be interpreted to give them the meaning they have in common usage and to <br />give this ordinance its most reasonable application. <br /> <br />ALLUVIAL FAN FLOODING - means flooding occurring on the surface of an <br />alluvial fan or similar landform which originates at the apex and is <br />characterized by high-velocity flows; active processes of erosion, sediment <br />transport, and deposition; and unpredictable flow paths. <br /> <br />APEX - means a point on an alluvial fan or similar landform below which the <br />flow path of the major stream that formed the fan becomes unpredictable and <br />alluvial fan flooding can occur. <br /> <br />APPURTENANT STRUCTURE - means a structure which is on the same parcel <br />of property as the principal structure to be insured and the use of which is <br />incidental to the use of the principal structure <br /> <br />AREA OF FUTURE CONDITIONS FLOOD HAZARD - means the land area that <br />would be inundated by the 1-percent-annual chance (100 year) flood based on <br />future conditions hydrology. <br /> <br />AREA OF SHALLOW FLOODING - means a designated AO, AH, ARj AO, <br />ARjAH, or VO zone on a community's Flood Insurance Rate Map (FIRM) with a <br />1 percent or greater annual chance of flooding to an average depth of 1 to 3 feet <br />where a clearly dermed channel does not exist, where the path of flooding is <br />unpredictable and where velocity flow may be evident. Such flooding is <br />characterized by ponding or sheet flow. <br /> <br />AREA OF SPECIAL FLOOD HAZARD - is the land in the floodplain within a <br />community subject to a 1 percent or greater chance of flooding in any given <br />year. The area may be designated as Zone A on the Flood Hazard Boundary <br />Map (FHBM). Mter detailed rate making has been completed in preparation for <br />publication of the FIRM, Zone A usually is refined into Zones A, AO, AH, Al-30, <br />AE, A99, AR, ARjAl-30, ARjAE, ARjAO, ARjAH, ARjA, VO, Vl-30, VE or V. <br /> <br />BASE FLOOD - means the flood having a 1 percent chance of being equaled or <br />exceeded in any given year. <br /> <br />BASEMENT - means any area of the building having its floor subgrade (below <br />ground level) on all sides. <br /> <br />3 <br />