[Amended 11-11-2009 by Ord. No. 540]
The identified floodplain area shall be any areas of Colwyn Borough subject to the one-hundred-year flood, which is identified as Zone A (Area of Special Flood Hazard) in the Flood Insurance Study (FIS) dated November 18, 2009, and the accompanying maps or the most recent revision thereof as issued by the Federal Emergency Management Agency, including all digital data developed as part of the Flood Insurance Study.
A. 
The Floodplain District shall be comprised of four subdistricts as follows:
(1) 
FW (Floodway Area). The areas identified as floodway in the AE Zone in the Flood Insurance Study prepared by the FEMA. For the purposes 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-hundred-year flood without increasing the water surface elevation of that flood more than one foot at any point.
(2) 
FF (Flood-Fringe Area). The remaining portions of the one-hundred-year floodplain in those areas identified as an AE Zone in the Flood Insurance Study, 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 Flood Insurance Study.
(3) 
FE (Special Floodplain Area). The areas identified as Zone AE in the Flood Insurance Study, where one-hundred-year flood elevations have been provided, but no floodway has been delineated.
[Added 11-11-2009 by Ord. No. 540]
(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.
[Added 11-11-2009 by Ord. No. 540]
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 Borough.
[Added 11-11-2009 by Ord. No. 540]
A. 
The delineation of the Floodplain District may be revised, amended and modified by the Borough in compliance with the National Flood Insurance Program when:
(1) 
There are changes through natural or other causes.
(2) 
Changes are indicated by future detailed hydrologic and hydraulic studies.
(3) 
Social and economic factors favor a realignment.
B. 
The identified floodplain area may be revised or modified by the Council only where studies or information provided by a qualified agency or person documents the need for such revision. Prior to any such change, approval must be obtained from the Federal Emergency Management Agency (FEMA).
[Amended 11-11-2009 by Ord. No. 540]
Should a dispute concerning any district boundary arise, an initial determination shall be made by the Borough Engineer. Any party aggrieved by this decision may appeal to the Borough Council. The burden of proof shall be on the appellant.