The boundaries of the various districts shall be shown on the official zoning maps accompanying and made a part of this title. The official zoning maps area on file in the office of the city clerk, and shall be available for inspection by the public at all reasonable times. When uncertainty exists as to the boundaries of districts as shown on the official zoning map, the following rules shall apply:
A. Boundaries indicated as approximately following the centerlines of streets, highways or alleys are construed to follow such lines.
B. Boundaries indicated as approximately following platted lot lines are construed as following such lot lines.
C. Boundaries indicated as approximately following city limits are construed as following city limits.
D. Boundaries indicated as following railroad lines are construed as to be midway between the main tracks.
E. Boundaries indicated as following shorelines are construed to follow such shorelines, and in the event of change in the shoreline are construed as moving with the actual shoreline. Boundaries indicated as approximately following the centerlines of streams, rivers or other bodies of water are construed to follow such centerlines.
F. Boundaries indicated as parallel to or extensions of features indicated in subsections A through E of this section are so construed. Distances not specifically indicated on the official zoning map 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 map, or in other circumstances not covered by subsections A through E of this section, the planning director shall interpret the district boundaries.