Section 4.03   Boundary Determination
   (1)   Where uncertainty exists with respect to the boundaries of any zoning district as shown on the Zoning District Map, the following rules shall apply:
      (A)   Where zoning district boundaries approximately follow street or alley lines or their centerlines, the lines shall be construed to be the zoning district boundaries.
      (B)   Where zoning district boundaries approximately follow lot lines, the lot lines shall be the zoning district boundaries.
      (C)   Where zoning district boundaries approximately follow the line of any stream, irrigation canal, waterway, railroad right of way, or the boundary line of public land, the lines shall be the zoning district boundaries.
      (D)   Where a zoning district boundary divides a lot, the location of the boundary (unless indicated by dimensions shown on the Zoning District Map) shall be determined by the use of the scale shown on the map.
   (2)   The following shall apply whenever a lot is divided by zoning district boundaries:
      (A)   If any zoning district comprises a minimum of 51 percent of the land area of the lot, that zoning district shall apply to the entire lot.
      (B)   In all other cases the Zoning Administrator shall determine the zoning district that applies to the lot.
      (C)   In all cases only one zoning district shall apply to the entire lot.