The identified floodplain area shall consist of the following specific areas/districts:
(A) The Floodway Area/District identified as floodway in the FIS that represents the channel of a watercourse and the adjacent land areas that must be reserved in order to discharge the base flood without cumulatively increasing the base flood water surface elevation by more than one foot at any point. This term shall also include floodway areas which have been identified in other available studies or sources of information for those special flood hazard areas where no floodway has been identified in the FIS and FIRM.
(1) Within any Floodway Area, no encroachments, including fill, new construction, substantial improvements or other development shall be permitted unless it has been demonstrated through hydrologic and hydraulic analysis, performed in accordance with standard engineering practice, that the proposed encroachment would not result in any increase in flood levels within the community during the occurrence of the base flood discharge.
(2) Within any floodway area, no new construction or development shall be allowed, unless a permit is obtained from the Pennsylvania Department of Environmental Protection Regional Office.
(B) The AE Area/District shall be those areas identified as an AE Zone on the FIRM included in the FIS prepared by FEMA and for which base flood elevations have been provided.
(C) The A Area/District shall be those areas identified as an A Zone on the FIRM included in the FIS prepared by FEMA and for which no 1% annual chance flood elevations have been provided. For these areas, elevation and floodway information from other federal, state or other acceptable source shall be used when available. Where other acceptable information is not available, the elevation shall be determined by hydrologic and hydraulic engineering techniques. Hydrologic and hydraulic analyses shall be undertaken only by registered professional engineers or others of demonstrated qualifications, who shall certify that the technical methods used correctly reflect currently accepted technical concepts. Studies, analyses, computations and the like shall be submitted in sufficient detail to allow a thorough technical review by the township.
(D) For areas adjoining streams, ponds and lakes not included in the FIS prepared by FEMA, the municipality will require the applicant to determine the elevation with hydrologic and hydraulic engineering techniques. Hydrologic and hydraulic analyses shall be undertaken only by professional engineers or others of demonstrated qualifications, who shall certify that the technical methods used correctly reflect currently accepted technical concepts. Studies, analyses, computations and the like shall be submitted in sufficient detail to allow a thorough technical review by the township. All areas inundated by the 100-year flood shall be included in the floodplain area.
(Ord. 177, passed 2-24-2015) Penalty, see § 151.999