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801.91.13:DESIGN CRITERIA FOR STRUCTURES: <br />A. Design Criteria for Structures <br />1.High Water Elevations. Structures shall be placed in <br />accordance with any floodplain regulations applicable to <br />the site. Where these controls do not exist, the <br />elevation to which the lowest floor, including basement, <br />is placed or flood-proofed shall be determined as <br />follows; <br />a.For lakes, by placing the lowest floor at a level <br />at least three (3) feet above the highest known <br />water level, or three (3) feet above the ordinary <br />high water level, whichever is higher; <br />b.For rivers and streauns, by placing the lowest floor <br />at least three (3) feet above the flood of record, <br />if data is availaible. If data is net available, by <br />placing the lowest floor at least three (3) feet <br />above the ordinary high water level, or by <br />conducting a technical evaluation to determine <br />effects of proposed construction upon flood stages <br />and flood flows and to establish a flood protection <br />elevation. Under all three approaches, technical <br />evaluations shall be done by a qualified engineer <br />or hydrologist consistent with Minnesota Statutes <br />Parts 6120.500 to 6120.6200 governing the <br />management of floodplain areas. If more than one <br />approach is used, the highest flood protection <br />elevation determined shall be used for placing <br />structures and other facilities; and <br />c.Water-oriented accessory structures may have the <br />lowest floor placed lower than the determined <br />elevation if the structure is constructed of flood- <br />resistant materials to the elevation, electrical <br />and mechanical equipment is placed adDOve the <br />determined elevation and, if long duration flooding <br />is anticipated, the structure is built to withstand <br />ice action and wind-driven waves and debris. <br />B.Water-Oriented Accessory Structures. As may be allowed by the <br />respective base zoning district, each lot may have one water- <br />oriented accessory structure not meeting the normal structure <br />setback in Section 801.91.9 of this Ordinance if this water- <br />oriented accessory structure complies with the following <br />provisions: <br />7