In the shoreland overlay zoning district, no land shall be subdivided which is held unsuitable by the city for the proposed use because of flooding, inadequate drainage, soil and rock formations with severe limitations for development, severe erosion potential, unfavorable topography, inadequate water supply or sewage disposal capabilities, or any other feature likely to be harmful to health, safety or welfare of future residents of the proposed subdivision or of the community. Land must be suitable in its natural state for the proposed use with minimal alteration.
(`86 Code, § 10.07)