Ordinance 1995-1188 - Laserfiche WebLink

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longitudinal axis parallel to the direction of flow of floodwaters, and so far as practicable, structures will be placed so their longitudinal axes are approximately on the same line as those of adjoining structures. 3. Structures will be firmly anchored as required by section 17.56.160 to prevent the structure from floating away and thus threatening to further restrict bridge openings and other restricted sections of the stream or river. 4. The lowest floor, including the basement floor, of any structure to be erected, constructed, reconstructed, or moved on the floodplain shall be constructed on fill at or above the elevation or level required by section 17.56.160 for the particular area and use specified, and the fill shall extend at such elevation at least fifteen feet beyond the limits of any structure or building erected thereon. C. Fills or deposits. 1 . Any fill or deposit of materials shall comply with subsection A. of this section 17.56.160. 2. The fill or deposit of materials shall have some beneficial purpose and the amount thereof will not be greater than is necessary to achieve that purpose, as demonstrated by a plan submitted by the owner showing the final dimensions of the proposed fill or other material and the use to which the filled land will be put. 3. The fill or deposit of materials does not imprudently reduce the flood-storage capacity of the waterway, unless a permit has been granted by the board of adjustment and the other requirements of this section have been met; and the fill or deposit of materials does not encroach on the portion of the floodplain which would have significant flow during the flood, and which for that reason would help convey the floodwaters. Any fill that reduces the hydraulic capacity requires appropriate hydraulic studies and a review of the urban impact of such reduction. 4. The fill or other materials will be protected against erosion by riprap, strong vegetative cover or bulkheading. 13