80-008 ORD - Laserfiche WebLink

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. with, and of a nature customarily incidental and subordinate to, the principal use or structure. 2. "City" shall mean the City of Elk River, Sherburne County, Minnesota. 3. "Equal Degree of Encroachment" shall mean a method of determining the location of encroachment lines so that the hydraulic capacity of floodplain lands on each side of a stream is reduced by an equal amount when calculating the increases in flood stages due to fioodplain encroachments. \ 4. "Flood" shall mean a temporary rise in stream flow or stage that results in inundation of the areas adjacent to the channel. 5. "Flood Frequency" shall mean the average frequency, statistically determined, for which it is expected that a specific flood stage or discharge may be equalled or exceeded. 6. "Flood Fringe" shall mean that portion of the flood plain outside of the floodway. 7. "Floodplain" shall mean the areas adjoining a watercourse r.rhlch have been or hereafter may be covered by the regional flood. . 8. "Floodproofing" shall mean a combination of structural prOVisions, changes, or adjustments to properties and structures subject to flooding, primarily for the reduction or elimination of flood damages to properties, water and sanitary facilities, structures, and contents of buildings in flood hazard areas. 9. "Floodway" shall mean the channel of the wa tercourse and those portions of the adjoining floodplains which are reasonably required to carry and discharge the regional flood. 10. "Obstruction" shall mean any dam, wall, wharf, embankment, levee, dike. pile, abutment, projection. excavation, channel rectificat:lon, culvert, building, wire, fence, stockpile, refuse, fill, structure, or matter in, along, across, or projecting into any channel, watercourse, or regulatory flood hazard area which may impede, retard, or change the direction of the flow of water, either in itself or by catching or collecting debris carried by such water, or that is placed where the flow of water might carry the same downstream to the damage of life or property. 11. "Reach" shall mean the hydraulic engineering term used to describe a longitudinal segment of a stream or river influenced by a natural or manmade obstruction. In an urban area, the segment of a stream or river between two consecutive bridge crossings would most typically constitute a reach. 12. "Regional Flood" shall mean a flood which is representative of large floods known to have occurred generally in Minnesota and reasonably characteristic of what can be expected to occur on an average frequency in the magnitude of the 100- year recurrence interval. . 13. "Regulatory Flood Protection Elevation" shall mean a point not less than one foot above the water surface profile associated with the regional flood plus any increases in flood stages attributable to encroachments on the floodplain. It is the elevation to which uses regulated by this ordinance are required to be 2.