1. Date, north point and scale;

2. Sufficient legal description of the land to define the boundaries of the proposed division of land;

3. A key map indicating the location of the proposed division of land in relation to the surrounding area;

4. The name and address of the owner or owners of record and/or the subdivider. If the map was prepared under the direction of a civil engineer or licensed land surveyor, his name and registration number shall also be shown on the tentative map;

5. The existing topography of the land proposed to be divided using contour intervals of not more than five feet, and of not less than two feet where the grade of the land is less than five percent. Contours of adjacent land shall also be shown wherever the surface features of the land affect the design and or improvement of the proposed subdivision. The tentative map shall contain a statement by the person preparing the map stating the source of contours shown on the map;

6. The approximate location and outline to scale of each existing or proposed building or structure on the property proposed for division. Buildings or structures on adjacent property shall be identified by house number or other identifying features, including a notation of any building or structure to be removed;

7. The approximate location of all areas subject to inundation or stormwater flow, the location, width and direction of flow of each watercourse;

8. The approximate location of each area wherein there are trees with a trunk diameter of more than six inches at a height of four and one-half feet from ground level, with a statement of the nature of the cover and the kind and approximate location of all trees standing within the boundaries of proposed public rights-of-way;

9. The location, width, approximate grade and curb radii of all existing and proposed streets or alleys within or adjacent to the proposed subdivision;

10. The width, purpose and approximate location of all existing and proposed easements or rights-of-way, whether public or private, within or adjacent to the proposed subdivision;

11. The source of water supply and method of sewage disposal;

12. The location and size of all existing sewer and water lines within two hundred feet of the subdivision;

13. Each street shown by its actual street name or by a temporary name or letter for the purpose of identification until the proper name of the street is determined by the city.