Boundaries of zones. Where uncertainty exists as to the boundaries of the zones as shown on the Zoning Map, the following rules shall apply:
(1) Boundaries indicated as approximately following the center lines of streets, highways or alleys shall be construed to follow such center lines.
(2) Boundaries indicated as approximately following lot lines shall be construed as following such lot lines.
(3) Boundaries indicated as approximately following municipality limits shall be construed as following municipal limits.
(4) Boundaries indicated as following railroad lines shall be construed to be midway between the main tracks.
(5) Boundaries indicated as approximately following the center lines of streams, rivers or other bodies of water shall be construed to follow such center lines.
(6) Boundaries indicated as parallel to or extensions of features indicated in (1) through (5) shall be so construed. Distances not specifically indicated on the Official Zoning Map shall be determined by the scale of the map.
(7) 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 (1) through (6), the Zoning Hearing Board shall interpret the district boundaries.