For the purpose of this chapter, the following definitions are adopted:
   BASE FLOOD: The flood having a one percent (1%) probability of being equaled or exceeded in any given year. The "base flood" is also known as the 100-year flood. The "base flood elevation" at any location is as defined in section 11-1-4 of this chapter.
   BUILDING: A structure that is principally aboveground and is enclosed by walls and a roof. The term includes a gas or liquid storage tank, a manufactured home or a prefabricated building. The term also includes recreational vehicles and travel trailers to be installed on a site for more than one hundred eighty (180) days.
   DEVELOPMENT: A. Any manmade change to real estate, including:
      1.   The construction, reconstruction or placement of a building or any addition to a building valued at more than one thousand dollars ($1,000.00).
      2.   The installing of a manufactured home on a site, preparing a site for a manufactured home or installing a travel trailer on a site for more than one hundred eighty (180) days.
      3.   The installing of utilities, construction of roads or similar projects.
      4.   The construction or erection of levees, walls, fences, bridges or culverts.
      5.   The drilling, mining, filling, dredging, grading, excavating or other nonagricultural alterations of the ground surface.
      6.   The storage of materials.
      7.   Any other activity that might change the direction, height or velocity of flood or surface waters.
   B.   "Development" does not include maintenance of existing buildings and facilities such as reroofing, resurfacing roads, or gardening, plowing and similar agricultural practices that do not involve filling, grading or construction of levees.
   FLOOD: A general and temporary condition of inundation of normally dry land areas from the overflow, the unusual and rapid accumulation or the runoff of surface waters from any source.
   FLOOD PROTECTION ELEVATION (FPE): The elevation of the base flood plus one foot (1') at any given location in the SFHA.
   FLOODWAY: That portion of the SFHA required to store and convey the base flood. The "floodway" for each SFHA of the village shall be according to the best data available from the Illinois state water survey floodplain information repository.
   RIVERINE SFHA: Any SFHA subject to flooding from a river, creek, intermittent stream, ditch or any other identified channel. This term does not include areas subject to flooding from lakes (except public bodies of water), ponding areas, areas of sheet flow or other areas not subject to overbank flooding.
   SPECIAL FLOOD HAZARD AREA (SFHA): Those lands within the jurisdiction of the village that are subject to inundation by the base flood. The "SFHAs" of the village are generally defined as such on the most recent flood insurance rate map of the village prepared by the federal emergency management agency. The "SFHAs" of those parts of unincorporated DeKalb County that are within the extraterritorial jurisdiction of the village or that may be annexed into the village are generally identified as such on the most recent flood insurance rate map prepared for DeKalb County by the federal emergency management agency. (1999 Code § 12.02; amd. Ord. 2010-09, 7-13-2010)