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c. Mudslides or mudflows that occur from excess surface water that is combined with mud or other debris that is sufficiently fluid so as to flow over the surface of normally dry land areas (such as earth carried by a current of water and deposited along the path of the current). Flood control structure means a physical structure designed and built expressly or partially for the purpose of reducing, redirecting, or guiding flood flows along a particular waterway. These specialized flood modifying works are those constructed in conformance with sound engineering standards. Flood insurance rate map (FIRM) means the official map of the community on which the Federal Emergency Management Agency has delineated both the special flood hazard areas and the risk premium zones applicable to the community. Flood Insurance Study means the official report provided by the Federal Emergency Management Agency that includes the FIRM and flood profiles for studied flooding sources that can be used to determine the Base Flood Elevations for some areas. Flood profile means a graph or a longitudinal profile showing the relationship of the water surface elevation of a flood event to a location along a stream or river. Flood protection elevation means an elevation two feet above the elevation or flood profile of the 100-year flood under existing channel and floodplain conditions. It is two feet above the elevation of the flood for the flood regulatory district as shown on the FIRM map in the office of the director of public works. Flood regulatory district means that portion of the floodplain subject to inundation by the 100- year flood. Flood stage means the height or elevation of a flood as referred to some datum. For purposes other than those of this chapter, the term is commonly used to refer to the elevation at which a stream will overtop its normal stage banks. Floodplain or flood prone area means any land area susceptible to being inundated as the result of a flood, including the area of land over which floodwater would flow from the spillway of a reservoir. Floodplain development permit is a permit required before construction or development begins within any Special Flood Hazard Area (SFHA). If FEMA has not defined the SFHA within a community, the community shall require permits for all proposed construction or other development in the community including the placement of manufactured homes, so that it may determine whether such construction or other development is proposed within flood-prone areas. Permits are required to ensure that proposed development projects meet the requirements of the NFIP and this floodplain management ordinance. Floodplain management is the operation of an overall program of corrective and preventative measures for reducing flood damage, including but not limited to emergency preparedness plans, Ordinance No.1625,Series 2012 Page 5 of 31 5