The Zoning Ordinance, as set forth in the text and map which constitute such Ordinance, is adopted with the purpose of improving and protecting the public health, safety, comfort, convenience, and general welfare of the people and in accordance with the Code of Iowa Chapter 414.3. The fulfillment of this purpose is to be accomplished by seeking the following:

   To preserve the availability of agricultural land.

   To consider the protection of soil from wind and water erosion.

   To encourage efficient urban development patterns.

   To lessen congestion in the public streets.

   To secure safety from fire, flood, panic, and other dangers.

   To promote health, safety, and the general welfare.

   To provide adequate light and air.

   To prevent the overcrowding of land.

   To avoid undue concentration of population.

   To promote the conservation of energy resources.

   To promote reasonable access to solar energy.

   To facilitate the adequate provision of transportation, water, sewerage, schools, parks, and other public requirements.

   To regulate, with reasonable consideration, among other things, the character of the area of the district and the peculiar suitability of such area for particular uses.

   To regulate districts with a view to conserving the value of buildings and encouraging the most appropriate use of land throughout the City.

   To provide for the manner in which regulations and restrictions and the boundaries of the districts are determined, established, and enforced, and from time to time amended, supplemented, or changed.

   To provide for the dividing the City into districts of such number, shape, and area as deemed be suited to carry out the purposes of this chapter.

   To regulate the erection, construction, reconstruction, alteration, repair, or use of buildings, structures, or land.