2015-010 Council Ordinances - Laserfiche WebLink

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L- L L L. section of protected wetlands or public waters are subject to the provisions of Minnesota Statutes, Section 103G.245. (e) A levee, dike or floodwall constructed in the floodway must not cause an increase to the 1% chance or regional flood. The technical analysis must assume equal conveyance or storage loss on both sides of a stream. (f) Floodway developments must not adversely affect the hydraulic capacity of the channel and adjoining floodplain of any tributary watercourse or drainage system. § 1103.06 FLOOD FRINGE DISTRICT (FF). (1) Permitted uses. Permitted uses are those uses of land or structures allowed in the underlying zoning district(s) that comply with the standards in § 1103.06 (2). (2) Standards for Flood Fringe permitted uses. (a) All structures, including accessory structures, must be elevated on fill so that the lowest floor, as defined, is at or above the regulatory flood protection elevation. The finished fill elevation for structures must be no lower than one foot below the regulatory flood protection elevation and the fill must extend at the same elevation at least 15 feet beyond the outside limits of the structure. 1. All service utilities, including ductwork, must be elevated or water -tight to prevent infiltration of floodwaters. 2. As an alternative to elevation on fill, an accessory structure that constitutes a minimal investment and that does not exceed 576 square feet in size may be internally floodproofed in accordance with § 1103.05 (4)(c). (b) The cumulative placement of fill or similar material on a parcel must not exceed 1,000 cubic yards, unless the fill is specifically intended to elevate a structure in accordance with § 1103.06 (2) of this ordinance, or if allowed as a conditional use under § 1103.06 (3)(c) below. (c) The storage of any materials or equipment must be elevated on fill to the regulatory flood protection elevation. (d) The storage or processing of materials that are, in time of flooding, flammable, explosive, or potentially injurious to human, animal, or plant life is prohibited. (e) Fill must be properly compacted and the slopes must be properly protected by the use of riprap, vegetative cover or other acceptable method. (f) All new principal structures must have vehicular access at or above an elevation not more than two feet below the regulatory flood protection elevation, or must have a flood warning /emergency evacuation plan acceptable to the City Council. (g) Accessory uses such as yards, railroad tracks, and parking lots may be at an elevation lower than the regulatory flood protection elevation. However, any facilities 11 of 25