In this subtitle the following terms have the meanings indicated. “Area of nontidal inundation” means an area within the State which is subject to inundation caused predominately by accumulated surface runoff or excess rainfall runoff, or both. “Area of tidal inundation” means an area within the State which is subject to inundation caused predominately by tides or wind-driven waters, or both. “Department” means the Department of the Environment. “Federal flood insurance program” means the program established by the National Flood Insurance Act of 1968, as amended. “Flood hazard area” means an area of tidal or nontidal inundation resulting from a 100-year flood event and established pursuant to the provisions of § 5-803 of this subtitle. “100-year flood event” or “100-year flood” means a flood that has a 1% chance of being equalled or exceeded in any given year. “Secretary” means the Secretary of the Environment. “Subdivision” means: Any county, including Baltimore City; and Any incorporated municipality which has the authority to adopt and enforce land use and control measures for the areas within its jurisdiction.