[Amended at time of adoption of Code (see Ch. 1, General Provisions, Art. I)]
The identified floodplain area shall consist of the following specific areas:
A. FW (Floodway Area). 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.
B. FF (Flood-Fringe Area). The remaining portions of the 100-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 100-year flood elevations as shown in the flood profiles contained in the Flood Insurance Study.
C. FE (Special Floodplain Area). The areas identified as Zone AE in the Flood Insurance Study, where 100-year flood elevations have been provided, but no floodway has been delineated.
D. FA (General Floodplain Area). The areas identified as Zone A in the FIS for which no 100-year flood elevations have been provided. When available, information from other federal, state, and other acceptable sources shall be used to determine the 100-year elevation, as well as a floodway area, if possible. When no other information is available, the 100-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.
E. In lieu of the above, the Borough 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.
F. The identified Protected Natural Resource Area shall consist of the following specific areas:
(1) WL (Wetland Area). Those areas that are inundated and saturated by surface or groundwater at a frequency and duration sufficient to support a prevalence of vegetation typically adapted for life in undrained or saturated soil conditions, those areas where the water table is at or near the surface or where shallow water covers the area due to permanent or to seasonal inundation of surface or groundwater, or those area with a slope of 2% or less and comprised of hydric soils, including swamps, marshes, bogs or similar areas.
(2) LP (Lakes, Ponds or Watercourses). Those areas, natural or man-made, where standing water remains for a majority of the year, even though the drying up of such areas may occur during the summer months, sufficient to support an eco-system representative of ponds, lakes or watercourses
(3) WM (Wetland Margin). Those areas in the transitional area extending from the outer limit of the wetland. For the purposes of this chapter, the wetland margins shall extend 100 feet from the wetland margin or to the limit of the hydric soil, whichever is greater. The limit of hydric soils shall be as mapped in the NRCS Soil Survey for Bucks and Philadelphia Counties, most recent edition, unless reclassified by a certified soil scientist.
(4) LPS (Lake and Pond Shorelines). Those areas which are the landside edges of lakes and ponds, extending 100 feet from the spillway crest elevation.
(5) SS (Steep Slopes). Those areas where the average slope exceeds 15% which, as a result of this slope, are subject to high rates of stormwater run-off, and present a potential for erosion or flooding.
(6) FW (Forests and Woodlands). Those areas consisting of at least 1/4 acre or more and containing six or more trees greater than four inches caliper measured 14 inches above the ground or consisting of a grove of trees forming one canopy where 10 or more trees exist within the drip lines of adjacent trees. The Forest and Woodland Area shall be measured from the drip line of the outer trees.