The identified floodplain area shall be any areas of Lehigh Township, classified as special flood hazard areas (SFHAs) in the Flood Insurance Study (FIS) and the accompanying Flood Insurance Rate Maps (FIRMs) dated July 16, 2014, and issued by the Federal Emergency Management Agency (FEMA), or the most recent revision thereof, including all digital data developed as part of the Flood Insurance Study and also consist of the following specific areas:
A. 
FW (Floodway Area).
(1) 
The areas identified as "Floodway" in the AE Zone in the Flood Insurance Study prepared by the FEMA. The term shall also include floodway areas which have been identified in other available studies or sources of information for those floodplain areas where no floodway has been identified in the Flood Insurance Study.
(2) 
For the purpose of this chapter, the floodway is based upon the criteria that a certain area within the floodplain would be capable of carrying the waters of the one-percent-annual-chance flood without increasing the water surface elevation of that flood more than one foot at any point.
B. 
FF (Flood-Fringe Area).
(1) 
The remaining portions of the one-percent-annual-chance floodplain in those areas identified as an AE Zone in the Flood Insurance Study, where a floodway has been delineated.
(2) 
The basis for the outermost boundary of this area shall be the base flood elevations as shown in the flood profiles contained in the Flood Insurance Study.
C. 
FA (General Floodplain Area).
(1) 
The areas identified as Zone A in the FIS for which no base flood elevations have been provided. When available, information from other state, federal and other acceptable sources shall be used to determine the base flood elevation, as well as a floodway area, if possible.
(2) 
When no other information is available, the applicant shall determine this elevation in accordance 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. The precise methodology to be employed shall be as determined by the Township Engineer.
D. 
The above-referenced FIS and FIRMs, and any subsequent revisions and amendments, are hereby adopted by Lehigh Township and declared to be part of this chapter.
The identified floodplain area may be revised or modified by the Board of Supervisors where studies or information provided by a qualified agency or person documents the need for such revision. However, prior to any such change to the special flood hazard area, approval must be obtained from FEMA. Additionally, as soon as practicable, but not later than six months after the date such information becomes available, a community shall notify FEMA of the changes to the special flood hazard area by submitting technical or scientific data.
Should a dispute concerning any identified floodplain boundary arise, an initial determination shall be made by the Township Zoning Officer or Township Engineer, and any party aggrieved by this decision may appeal to the Township Zoning Hearing Board. The burden of proof shall be on the appellant.