For the purposes of this ordinance, the city is hereby divided into four districts, which shall be known and described, respectively as follows:

District SFR, Single-Family Residential Dwelling District.
District MU, Mixed Use District.
District MH, Manufactured Housing District.
District BR, Business and Retail District.

The location and boundaries of the three [four] districts of the city shall be shown on the map kept on file in the office of the city secretary, a copy of which is attached hereto, which map is designated as the "Official Zoning District Map" of the city. Said map and all notations, references, and other information shown thereon and all amendments thereto are made a part of this ordinance as if fully set forth and described herein.

The zoning district map shall be identified by the signature of the mayor, attested by the city secretary, and the seal of the city under the following words: "This is to certify that this is the official zoning district map referred to in the City of Iowa Colony Zoning Ordinance," together with the number and the date of the adoption of this ordinance.

If, in accordance with the provisions of this ordinance, V.T.C.A., Local Government Code ch. 211, or any other applicable law, changes are made in district boundaries or other matters portrayed on the official zoning district map, such changes shall be entered on such map promptly after the amendment has been approved by the city council, with an entry on the official zoning district map as follows: "On ________ (date), by Ordinance No. ___ (number), the following changes were made in the Official Zoning District Map: ___________ (brief description of nature of changes)," which entry shall be signed by the mayor and attested by the city secretary.

Regardless of the existence of purported copies of the official zoning district map which may be made or published from time to time, the official zoning district map shall be located in the office of the city secretary, and it shall be the final authority as to the current zoning status of land areas, buildings, and other structures in the city.

Where uncertainty exists as to the boundaries of districts as shown on the official zoning district map, the following rules shall apply:

(a)

Street lines. Boundaries indicated as approximately following the centerline of streets, highways, or alleys shall be constructed to follow such centerlines.

(b)

Lot lines. Boundaries indicated as approximately following platted lot lines shall be construed to follow such lot lines.

(c)

City limits. Boundaries indicated as approximately following city limits shall be construed as following such city limits.

(d)

Waterway lines. Boundaries indicated as approximately following the centerlines of streams, canals, drainageways, or other bodies of water shall be construed to follow such centerlines.

(e)

Extensions. Boundaries indicated as parallel to or extensions of features indicated in subsections (a) through (d) above shall be thus construed.

(f)

Distances. Distances not specifically indicated on the official zoning district map shall be determined by the scale of the map.

(g)

Interpretation by board of adjustment. Where physical features existing on the ground are at variance with those shown on the official zoning district map, or in any other circumstances not covered by subsections (a) through (f) above, the board of adjustment shall interpret the district boundaries.