Where uncertainty exists with respect to any of the boundaries of the zones as shown on the Zoning Map, the following rules shall apply:
A. Where zone boundaries are indicated as approximately following the center lines of street, highway, or railroad rights-of-way or such lines extended, such center lines or such lines extended shall be construed to be such boundaries;
B. Where zone boundaries are indicated as approximately following the corporate limit line of the city, such corporate limit line shall be construed to be such boundaries;
C. Where zone boundaries are indicated as approximately following property lines or such lines extended, such property lines or such lines extended shall be construed to be such boundaries;
D. Where zone boundaries are indicated as approximately following the center line of stream beds or river beds, such center lines or such lines extended shall be construed to be such boundaries;
E. No zone boundary line shall hereinafter be established to divide one lot into two or more zones unless the size of the lot in question is such that division is determined to be essential by the planning and zoning commission and the city council.
(Ord. 1178 § 4.2, 1987)