Where uncertainty exists as to the boundaries of districts as shown on the Official Zoning Maps, the following rules shall apply:
(a) Boundaries indicated as approximately following the centerlines of streets, highways or alleys shall be construed to follow such centerlines.
(b) Boundaries indicated as approximately following platted lot lines shall be construed as following such lot lines.
(c) Boundaries indicated as approximately following City limits shall be construed as following City limits.
(d) Boundaries indicated as following railroad lines shall be construed to be midway between the main tracks.
(e) Boundaries indicated as following shorelines shall be construed to follow such shorelines and, in the event of change in the shoreline, shall be construed as moving with the actual shoreline. Boundaries indicated as approximately following the centerlines of streams, rivers, canals, lakes or other bodies of water shall be construed to follow such centerlines.
(f) Boundaries indicated as parallel to or extensions of features indicated in subsections (a) through (e) hereof shall be so construed. Distances not specifically indicated on the Official Zoning Maps shall be determined by the scale of the Map.
(g) Where physical or cultural features existing on the ground are at variance with those shown on the Official Zoning Maps, or in other circumstances not covered by subsections (a) through (f) hereof, the Board of Appeals shall interpret the district boundaries.