(a) Basis of Districts. The various flood plain districts shall include areas subject to inundation by waters of the 100 year flood. The basis for the delineation of these districts shall be the Flood Insurance Study prepared for the Borough by the Federal Emergency Management Agency (FEMA).
(1) FW (Floodway Area). The areas identified as “Floodway” in the AE Zone in the Flood Insurance Study (FIS) prepared by the FEMA. This term shall also include floodway areas which have been identified in other available studies or sources of information for those flood plain areas where no floodway has been identified in the FIS.
(2) FF (Flood-fringe Area). The remaining portions of the one hundred (100) year flood plain 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 100 year flood elevations as shown in the FIS.
(3) FA (General Flood Plain Area.) The areas identified as Zone A in the FIS for which no one hundred (100) year flood elevations have been provided. In determining the necessary elevations for the purposes of this article, the following methods shall be used:
A. A flood elevation shall be approximated by determining the actual ground elevation at the point of the General Flood Plain Area Boundary nearest to the development.
B. Other sources of data may be used such as:
1. Corps of Engineers - Flood Plain Information Reports.
2. U.S. Geological Survey - Flood Prone Quadrangles.
3. U.S.D.A., Soil Conservation Service - County Soils Surveys.
4. Known high-water Marks from past floods.
5. Other sources.
If such information exists, a flood elevation determined from these sources may be substituted for the method described above.
(Ord. 3014. Passed 11-20-95.)
(b) Overlay Concept.
(1) The floodplain districts described above shall be overlays to the existing underlying districts as shown on the official Zoning Ordinance Map, and as such, the provisions for the floodplain districts shall serve as a supplement to the underlying district provisions.
(2) Where there happens to be any conflict between the provisions or requirements of any of the floodplain districts and those of any underlying district, the more restrictive provisions and/or those pertaining to the floodplain districts shall apply.
(Ord. 2717. Passed 2-10-86.)
(Ord. 2717. Passed 2-10-86.)
(c) Zoning Map. The boundaries of the flood plain districts are delineated on the map entitled “Flood Insurance Rate Map” which is part of the Flood Insurance Study prepared by the Federal Emergency Management Agency, dated October 4, 1995. The Flood Insurance Rate Map is hereby declared to be a part of both this article and the Official Zoning Map of the Borough.
(Ord. 3014. Passed 11-20-95.)
(d) District Boundary Changes. The delineation of any of the floodplain districts may be revised by the governing body where natural or man-made changes have occurred and/or more detailed studies, conducted or undertaken by the U.S. Army Corps of Engineers, the Ohio River Basin Commission or other qualified agency or individual, documents the justification for such changes. However, prior to any such change, approval must be obtained from the Federal Insurance Administration (FIA).
(e) Interpretation of District Boundaries. Initial interpretations of the boundaries of the floodplain districts shall be made by the Zoning Officer. Should a dispute arise concerning the boundaries of any of the districts, the Zoning Hearing Board shall make the necessary determination. The person questioning or contesting the location of the district boundary shall be given a reasonable opportunity to present his case to the Board and to submit his own technical evidence, if he so desires.
(Ord. 2717. Passed 2-10-86.)
(Ord. 2717. Passed 2-10-86.)