The zoning regulations and districts as herein set forth are approved and established. The city is hereby divided into classes of use districts, such districts being of the shape and area deemed best suited to carry out the purpose and intent of this article. Within such districts, this article hereby regulates and restricts the erection, construction, reconstruction, alteration, repair and use of buildings, structures and land as herein set forth.

The boundaries of the districts are as shown on the official zoning district map, which is hereby adopted and made a part of this article as if the boundaries of the district, notations and information shown thereon were fully contained and described herein. It shall be the duty of the city secretary to keep two complete sets of the official zoning district maps, one of which shall be kept in its original condition as a permanent record; and, the second of which shall indicate the dates and locations of all revisions subsequent to the adoption of the map in its original condition. The city secretary shall also keep any other maps used for administration purposes up to date, clearly indicating thereon all changes, variances and special exceptions. These maps shall be maintained in the city hall and shall be available to the public during normal business hours.

Upon the effective date of this amendment, the zoning map, as heretofore amended, shall be changed as follows:

Whenever a street or alley that forms a district boundary is vacated by the council, adjacent district boundaries shall extend to the centerline of the street or alley vacated.