A. Land subject to flooding and land deemed to be topographically unsuitable for residential development shall not be platted for residential use or for any other use which may increase the danger to health, life or property, or aggravate erosion or flood hazards. Such land within the subdivision shall be set aside on the plat for such uses as will not be endangered by periodic or occasional inundation contrary to the public welfare. To insure that lots will be located only where they will provide flood-free house sites, the city council may require the subdivider to provide elevation and flood profiles sufficient to demonstrate that the house sites will be completely free from the danger of flooding. If a stream flows through or adjacent to the proposed subdivision, the plat plan shall provide for an easement or right-of-way along the stream for a floodway. For the smaller streams, the plan shall also provide for channel improvement to enable them to carry all reasonable floods within banks.
B. The floor elevations of houses shall be high enough to be well above the extraordinary flood. The floodway easement shall be wide enough to provide for future enlargement of the stream channel as adjacent areas become more highly developed and run-off rates are increased. (Ord. 433 (part), 1995)