9-4-3: ZONE BOUNDARIES:
   A.   Unless otherwise defined on the zoning maps, district boundaries shall be lot lines, the centerlines of streets and alleys, highway right-of-way lines, the centerline between the two (2) main tracks of any railroad line, extended quarter section, half section or section lines, contour lines, Municipal corporate boundaries, centerlines or banks of streambeds or other bodies of water or noticeable points of change in natural landforms.
   B.   Where district boundaries appear approximately parallel to the centerlines or street lines of streets, or parallel to the centerlines or rights-of-way of highways, such lines shall in fact constitute the boundaries on the official zoning map. If no distance is indicated, the boundary shall be determined by the use of the scale shown on the official zoning map.
   C.   Where district boundaries appear to follow lot lines, such lot lines shall constitute boundaries.
   D.   The boundary determination for the Floodplain Overlay District is explained in chapter 17 of this title. The determination of that zoning district shall be made by the Administrator, pursuant to section 9-4-4 of this chapter. (Ord. 2011-01, 1-18-2011; Ord. 2000-3, 3-20-2000; Ord. 77-5, 3-28-1977, eff. 4-7-1977)