(a) Any areas of East Whiteland Township, classified as special flood hazard areas (SFHAs) in the Flood Insurance Study (FIS) and the accompanying Flood Insurance Rate Maps (FIRMs) dated September 29, 2017, and issued by the Federal Emergency Management Agency (FEMA) or the most recent revision thereof. The above-referenced FIS and FIRMs, and any subsequent revisions and amendments are hereby adopted by East Whiteland Township and declared to be a part of this section.
(b) That land adjoining any perennial or intermittent stream shown on the soil survey maps issued for Chester and Delaware Counties by the United States Soil Conservation Service in May 1963, or adjoining any ponds or lakes with an area of one acre or more, which is within 50 feet of the banks thereof and extends for such additional distance from said banks as is or may be subject to the base flood, and the flood hazard districts map maintained and revised by the Township from time to time, based upon the following: (
See table here.)
(c) In addition, the flood hazard area shall be defined to include all areas, not shown on the map, which have flooded within the last 100 years as recorded or indicated by written or other objective records, such as the United States Army Corps of Engineers Survey.
(d) The Township may 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, etc., shall be submitted in sufficient detail to allow a thorough technical review by the Township. All areas which, by hydrological or hydraulic profile analysis are calculated to be inundated during a base flood. If such profile analysis defines a flood hazard area which conflicts with the definition in (a), (b) or (c) above, the area defined by the stream profile analysis shall supersede if more restrictive. Such analysis shall be required prior to the issuance of any permits, if, after consultation with the Township Planning Commission, Township Engineer and U.S. Soil Conservation Service, the Zoning Officer has reason to believe that the applicant's property or a portion thereof is in such close proximity to a flood hazard area as to be subject to inundation by a base flood. If the analysis demonstrates that the property or a portion thereof will not be subject to inundation by a base flood, such permits, as are required, shall be considered for approval, but such permits shall not be issued unless and until the applicant has complied with all other applicable provisions of this section and with all other applicable ordinances and regulations.
SPECIAL FLOOD HAZARD AREA: SFHA are defined as the area that will be inundated by the flood event having a 1-percent chance of being equaled or exceeded in any given year. The 1-percent annual chance flood is also referred to as the base flood or 100-year flood. Flood Zones A and AE are Displayed. See the