18-1476 Amending Chapter 46 Floods

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a one t e greate ehanee of flooding icer , o Base flood means the flood having a one percent chance of being equaled or exceeded in any given year. The base flood is commonly referred to as the "100 year flood" or the "1 -percent - annual chance flood." Base flood elevation means elevation of the base flood, including wave height, relative to the National Geodetic Vertical Datum (NGVD). North American Vertical Datum (NAND) or other datum specified on the Flood Insurance Rate Map (FIRMI. t ate. suf v eelevation asso� to with the base flood Basement means that portion of a building having its floor subgrade (below ground level) on all sides. City means for the purpose of this Chapter. the City of Casselberry. Community means, for the purpose of this Chapter, the City of Casselberry. Design flood means the flood associated with the greater of the following two areas: 0) Area with a floodplain subject to a 1 -percent or greater chance of flooding in any year; or (2) Area designated as a flood hazard area on the City's flood hazard map, or otherwise legally designated. Design flood elevation means the elevation of the "design flood." including wave height, relatjve to the datum specified on the City's legally designated flood hazard map. In areas designated as Zone AO the design flood elevation shall be the elevation of the highest existing grade of the building's perimeter plus the depth number (in feet) specified on the flood hazard map In areas designated as Zone AO where the depth number is not specified on the map, the depth number shall be taken as being equal to 2 feet. Development means any manmade change to improved or unimproved real estate, including but not limited to buildings or other structures; tanks, temporary structures, temporary or permanent storage of equipment or materials. mining, dredging, filling, grading, paving, excavating or drilling operations; , or any other land disturbing activities. pilings,Elevated bttikdh�g means a iienbasemefA building built to have the lowest floor elevated above the ground level by means of foundation walls, eolumns, pasts, piefs, or sheaf walls-. Encroachment means the placement of fill excavation buildings permanent structures or other development into a flood hazard area which may impede or alter the flow capacjty of riverine flood hazard areas. the advaneef•' f uses, plant grovAh, f;il ati buildings, v �u� �- permanent str-tietures or development itAe a fleadplain, whieh may impede or- alter the flow ef., fl, edpla;,� befefe T 1 1 19901 +1 date of the City's initial Flood insuranee Rate M (FIRM).