Where uncertainty exists as to the boundaries of districts as shown on the official zoning map, the following rules shall apply:

1.

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

2.

Boundaries indicated as approximately following town or county limits shall be construed as following town or county limits.

3.

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

4.

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.

5.

Boundaries indicated as parallel to or extensions of features indicated in subsections 1 through 5 above shall be so construed.

6.

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 1 through 6 above, the board of adjustment shall interpret the district boundaries.

7.

In all cases where a district boundary divides a lot in one ownership and more than 50% of the area of such lot lies in the less restricted district, the regulations prescribed by this ordinance for the less restricted district shall apply to such portion of the more restricted portion of said lot which lies within 30 feet of such district boundary. For purposes of this section, the more restricted district shall be deemed that district which is subject to regulations which prohibit the particular use intended to be made of said lot or which regulations require higher standards with respect to setback, coverage, yards, screening, landscaping and similar requirements.

8.

In all cases where a district boundary is located not farther than 15 feet away from a lot line of record, such boundary line shall be construed to coincide with such lot line.

9.

In all other cases where dimensions are not shown on the map, the location of boundaries shown on the map shall be determined by the use of the scale appearing thereon.