The boundaries of the above-designated districts shall be as shown upon the map attached to and made a part of this chapter which shall be designated "Zoning Map." Said map and all the notations, references and other data shown thereon are hereby incorporated by reference into this chapter as if all were fully described herein.[1]

The boundaries of the FW and FF Districts shall serve as overlays to the underlying districts as shown on the Official Zoning Map and as specifically described in the Floodway Data Table and 100-year-flood delineation in the Flood Insurance Study (FIS) prepared for the Township by the Flood Insurance Administration (FIA), dated March 2009, and as may be amended. Said study and accompanying maps, all notations, references and other data shown thereon are hereby incorporated by reference into this chapter as if all were fully described herein.

The boundaries of the Airport Hazard Zone shall be that as described by mapping completed as part of the Model Airport Zoning Ordinance for Lower Allen Township, prepared by L. Robert Kimball and Associates, 1989, and as may be amended, and available from the Township office. Such boundaries are referenced as an overlay to the Zoning Map and are incorporated by reference into this chapter as if fully described herein.

The boundaries between these districts are, unless otherwise indicated, either the center lines of streets, alleys, rights-of-way, lot lines or such lines extended or lines parallel thereto.

Where figures are shown on the Zoning Map between a street, alley, right-of-way or lot line and a district boundary line, such figures indicate that the district boundary line runs parallel to that line at a distance therefrom equivalent to the number of feet so indicated.

Where district boundaries are not clearly fixed by the above methods, such boundaries shall be determined by the use of the scale of the Zoning Map.

Should any other uncertainty exist, the Zoning Officer shall interpret the intent of this chapter and the Zoning Map as to the exact location of district boundaries.

When a district boundary line divides a lot held in single and separate ownership at the effective date of this chapter, the regulations of either abutting district may be construed by the owner to be applicable to the portion of such lot in the other abutting district for a distance of not more than 50 feet beyond the district boundary line.