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(e) Flood piain developments shall not adversely affect the hydraulic capacity of the channel and adjoining <br /> flood plain of any tributary watercourse or drainage system where a floodway or other encroachment <br /> limit has not been specified on the official floodplain overlay district map. <br /> (f) Standards for recreational vehicles are contained in section 78-1131. <br /> (g) All manufactured homes must be securely anchored to an adequately anchored foundation system <br /> that resists flotation, collapse and lateral movement. Methods of anchoring may include, but are not to <br /> be limited to, use of over-the-top or frame ties to ground anchors. This requirement is in addition to <br /> applicable state or local anchoring requirements for resisting wind forces. <br /> DIVISION 6.-GENERAL FLOOD PLAIN DISTRICT <br /> Sec.78-1123.-Permitted uses. <br /> (a) The uses listed in section 78-1114 of this article shall be permitted uses. <br /> (b) All other uses shall be subject to the floodway/flood fringe evaluation criteria pursuant to section 78- <br /> 1124 below. Division 4 shall apply if the proposed use is in the floodway district and division 5 shall <br /> apply if the proposed use is in the flood fringe district. <br /> Sec.78-1124. -Procedures for floodway and flood fringe determinations within the general flood plain district. <br /> (a) Upon receipt of an application for a permit or other approval within the general flood plain district, the <br /> applicant shall be required to furnish such of the following information as is deemed necessary by the <br /> planning director for the determination of the regulatory flood protection elevation and whether the <br /> proposed use is within the floodway or flood fringe district. <br /> 1. A typical valley cross-section(s) showing the channel of the stream, elevation of land areas <br /> adjoining each side of the channel, cross-sectional areas to be occupied by the proposed <br /> development, and high water information. <br /> 2. Plan (surface view) showing elevations or contours of the ground, pertinent structure, fill, or <br /> storage elevations, the size, location, and spatial arrangement of all proposed and existing <br /> structures on the site, and the location and elevations of streets. <br /> 3. Photographs showing existing land uses, vegetation upstream and downstream, and soil types. <br /> 4. Profile showing the slope of the bottom of the channel or flow line of the stream for at least 500 <br /> feet in either direction from the proposed development. <br /> (b) The applicant shall be responsible to submit one copy of the above information to a designated <br /> engineer or other expert person or agency for technical assistance in determining whether the <br /> proposed use is in the floodway or flood fringe district and to determine the regulatory flood protection <br /> elevation. Procedures consistent with Minnesota Regulations 1983, Parts 6120.5000-6120.6200 and <br /> 44 Code of Federal Regulations Part 65 shall be followed in this expert evaluation. The designated <br /> engineer or expert is strongly encouraged to discuss the proposed technical evaluation methodology <br /> with the respective department of natural resources'area hydrologist prior to commencing the analysis. <br /> The designated engineer or expert shall: <br /> 1. Estimate the peak discharge of the regional flood. <br /> 2. Calculate the water surface profile of the regional flood based upon a hydraulic analysis of the <br /> stream channel and overbank areas. <br /> 3. Compute the floodway necessary to convey or store the regional flood without increasing flood <br /> stages more than 0.5 foot. A lesser stage increase than 0.5 shall be required if, as a result of the <br /> additional stage increase, increased flood damages would result. An equal degree of <br /> encroachment on both sides of the stream within the reach shall be assumed in computing <br /> floodway boundaries. <br /> Page 10 <br />