The boundaries of the residential, mixed-use, commercial, and industrial districts described in § 27-301 shall be as shown on the Official Zoning Map which is on file in the Township Office. This map shall be known as the "Zoning Map of Susquehanna Township" and is hereby made a part of this Chapter. A copy of the Official Zoning Map accompanies this Chapter.

The boundaries of the overlay districts described in § 27-301 shall serve as overlays to the underlying districts as shown on the Official Zoning Map. The Floodplain Management Overlay District is specifically described in the Floodway Data Table and one-hundred-year flood delineation in the Flood Insurance Study prepared for the Township by the Flood Insurance Administration dated, October 1976 and flood map issued April 15, 1977. The said study and accompanying maps and all notations, references and other data shown thereon are hereby incorporated by reference into this Chapter as if were fully described herein.

Boundaries indicated as approximately following the center lines of streets, highways or alleys shall be construed to follow such center lines.

Boundaries indicated as approximately following platted lot lines shall be construed as following such lot lines.

Boundaries indicated as approximately following municipality limits shall be construed as following such municipality limits.

Boundaries indicated as following railroad lines shall be construed to be midway between the main tracks.

Boundaries indicated as following shorelines shall be construed as following such shorelines and, in the event of change in the shorelines shall be construed as moving with the actual shoreline; boundaries indicated as approximately following the center lines of streams, rivers or other bodies of water shall be construed as following such center lines.

Boundaries indicated as parallel to or extensions of features indicated in Subsections 1 through 5 above shall be so construed. Distances not specifically indicated on the official Zoning Map shall be determined by the scale of the map.

Where physical or cultural features existing on the ground are at variance with those shown on the Official Zoning Map or in circumstances not covered by Subsections 1 and 2 herein, the Zoning Hearing Board shall interpret the 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.