[Amended 12-8-2015 by Ord. No. 2015-6]
The identified floodplain area shall be any areas within the Township, subject to the one-hundred-year flood, which is identified as Zone A (area of special flood hazard) in the Flood Insurance Study (FIS) prepared for the Township of East Manchester, York County, Pennsylvania, by the Federal Insurance Administration with an effective date of December 16, 2015, and the accompanying maps or the most recent revision thereof as issued by FEMA, including all digital data developed as part of the FIS. The floodplain area shall be the Floodplain Overlay (FP) District as established by § 255-18 of this Code.
A.
The identified floodplain area shall consist of the following specific
areas:
(1)
FW (floodway area): the areas identified as "floodway" in the AE
Zone in the FIS prepared by 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 FIS.
(2)
FF (flood-fringe area): the remaining portions of the one-hundred-year
floodplain in those areas identified as an AE Zone in the FIS, where
a floodway has been delineated. The basis for the outermost boundary
of this area shall be the one-hundred-year flood elevations as shown
in the flood profiles contained in the FIS.
(3)
FE (special floodplain area): the areas identified as Zone AE in
the FIS, where one-hundred-year flood elevations have been provided,
but no floodway has been delineated.
(4)
FA (general floodplain area): the areas identified as Zone A in the
FIS for which no one-hundred-year flood elevations have been provided.
When available, information from other federal, state, and other acceptable
sources shall be used to determine the one-hundred-year elevation,
as well as a floodway area, if possible. When no other information
is available, the one-hundred-year elevation shall be determined by
using a point on the boundary of the identified floodplain area which
is nearest the construction site in question.
B.
In lieu of the above, the municipality 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.
[Amended 12-8-2015 by Ord. No. 2015-6]
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 East Manchester
Township Planning Commission and any party aggrieved by this decision
or determination may appeal to the Board of Supervisors. The burden
of proof shall be on the appellant.
