The location and boundaries of the zoning districts are shown on the map entitled "Zoning Map of the City of La Center," dated with the effective date of the ordinance codified in this title and signed by the mayor and city clerk, and hereafter referred to as the "zoning map."

The signed copy of the zoning map shall be maintained on file in the office of the city clerk, and is made a part of this title.

Revised Maps. The city council may, from time to time, direct the planning director to replace the official zoning maps, or portions thereof, with a map or maps, or portions thereof, which include all lawful changes of zone to date. Such maps, or portions thereof, filed as replacements, shall bear dated, authenticating signatures of the city council and city clerk. Any maps, or portions thereof, thereby replaced shall be retained in a separate file by the city clerk. Any revisions or replacements of said maps, when duly entered, signed, and filed with the city clerk as authorized by this chapter, are part of this title.

Unless otherwise specified, district boundaries are lot lines, the centerlines of streets, and railroad right-of-way, or such lines extended.

If a district boundary divides a lot into two districts, the entire lot shall be placed in the district that accounts for the greater area of the lot; provided, that if a district boundary divides a lot into two equal portions, the lot shall meet the requirements of both districts to the extent practical.

Any land or property not specifically identified with a zoning designation shall be considered to be zoned as is the most restrictive zone classification designated on adjoining and/or abutting properties, until such time as it is determined otherwise by a rezone action.

Where the application of subsections (1) through (3) of this section does not clarify the zone boundary location, the director shall interpret the maps, and by written decision, determine the location of the zoning boundary. Said written descriptions shall be kept on file with the city clerk.