The City of Port Washington is hereby divided into zoning districts as shown upon a map designated as the Zoning Map of the City of Port Washington and made part of this chapter, and all the notations, references and other information shown thereon shall be as much a part of this chapter as if the matters and information set forth by said map were all fully described herein.

The Official Zoning Map shall be kept current at all times. A change resulting from amendment to the district boundaries shall be shown on a detailed excerpt map showing the exact area of change which references shall be a part of the official amendatory ordinance and kept as a supplementary file record to the official map. The Official Zoning Map shall be corrected by the City Engineer within 30 days of passage of the amendatory ordinance.

In the event that the Official Zoning Map becomes damaged, destroyed, lost or difficult to interpret because of the nature or number of changes and additions, the Common Council may, by resolution, adopt a new Official Zoning Map, which shall supersede the prior Official Zoning Map. The new Official Zoning Map may correct drafting or other errors or omissions in the prior Official Zoning Map, but no such correction shall have the effect of amending the original zoning ordinance or any subsequent amendment thereof.

The text of the official zoning regulations and the corresponding official zoning district map shall be kept on file in the offices of the City, and any other copies thereof shall be purely informational and shall not have the status of law. Said text and map shall be identified by the signature of the Major, attested by the City Clerk and bearing the Seal of the City, together with the date of the adoption of this chapter, under the following words: "This is to certify that this is the Official Zoning (Ordinance) (Map) referred to in § 485-21 of the City Zoning Ordinance, City of Port Washington, Ozaukee County, State of Wisconsin."