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7/21/2017 Chapter 13 - Zoning Code http://library.amlegal.com/alpscripts/get-content.aspx 8/17 B. Commercial Uses. Accessory land uses, such as yards, railroad tracks, and parking lots may be at elevations lower than the Regulatory Flood Protection Elevation. However, a permit for such facilities to be used by the employees or the general public shall not be granted in the absence of a flood warning system that provides adequate time for evacuation if the area would be inundated to a depth and velocity such that when multiplying the depth (in feet) times velocity (in feet per second) the product number exceeds four (4) upon occurrence of the regional flood. C. Manufacturing and Industrial Uses. Measures shall be taken to minimize interference with normal plans operations especially along streams having protracted flood durations. Certain accessory land uses such as yards and parking lots may be at lower elevations subject to requirements set out in Paragraph B above. In considering permit applications, due consideration shall be given to needs of an industry whose business requires that it be located in flood plain areas. D. Fill shall be properly compacted and the slopes shall be properly protected by the use of riprap, vegetative cover or other acceptable method. The Federal Emergency Management Agency (FEMA) has established criteria for removing the special flood hazard areas designation for certain structures properly elevated on fill above the 100-year flood elevation - FEMA's requirements incorporate specific fill compaction and side slope protection standards for multi-structure or multi-lot developments. FEMA's standards should be investigated prior to the initiation of site preparation if a change of special flood hazard area designation will be requested. E. Flood plain developments shall not adversely affect the hydraulic capacity of the channel and adjoining flood plain of any tributary watercourse or drainage system where a floodway or other encroachment limit has not been specified on the Official Zoning Map. F. Standards for recreational vehicles are contained in Section 1325.12. G. All manufactured homes shall be securely anchored to an adequately anchored foundation system that resists flotation, collapse and lateral movement. Methods of anchoring may include, but are not to be limited to, use of over-the-top or frame times to ground anchor. This requirement shall be in addition to applicable state of local anchoring requirements for resisting wind forces. 1335.17 General Flood Plain District. Subd. 1 Permitted Uses. A. The uses listed as permitted uses for Floodway Districts, shall be permitted uses in a General Flood Plain District. B. All other uses shall be subject to the 1% annual chance flood (100-Year Flood Elevations) and/or Floodway and Flood Fringe determinations criteria pursuant to Subd 2 below. Section 1335.25 shall apply if the proposed use is in the Floodway District, and Section 1335.26 shall apply is the proposed use is in the Flood Fringe District. Subd. 2 Procedures for 1% annual chance (100-Year Flood Elevations) and/or Floodway and Flood Fringe determinations for streams within the General Flood Plain District. A. Upon receipt of an application for a Conditional Use Permit for a use within the General Flood Plain District, the applicant shall be required to furnish the following information as is deemed necessary by the City Administrator for the determination of the Regulatory Flood Protection Elevation and whether the proposed use is within the Floodway or Flood Fringe District. 1. A typical valley cross-section showing the channel of the stream, elevation of land areas adjoining each side of the channel, cross-sectional areas to be occupied by the proposed development, and high water information; and Dr a f t 11 / 2 0 / 2 0 1 7