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<br />E. ENCROACHMENT LINES - The lateral limits or line drawn along each side and
<br />generally parallel to a watercourse, body of water, or ravine to preserve
<br />the flood carrying capacity of the stream or other body of water and its
<br />flood plain, and to assure attainment of the basic objective of improvement
<br />plans that may be considered or proposed. Their location along a stream
<br />should be such that the floodways between them will effectively carry and
<br />discharge a flood of not less than the 100 year flood hereinafter referred
<br />to.
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<br />F. EQUAL DEGREE OF ENCROACHHENT - A standard applied in detennining the
<br />location of encroachment lines so that the hydraulic capacity of flood
<br />plain lands on each side of a channel are reduced by an equal amount due
<br />to flood plain encroachments. This standard will not be applied where
<br />encroachment prior to this ordinance exists.
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<br />G. FLOOD - A temporary rise in stream flow or stage that results in inundation
<br />of the areas adjacent to the channel.
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<br />H. FLOOD HAZARD AREA - The maximum area of a flood plain which will be inundated
<br />by a 100 year flood, an Intermediate Regional Flood (a flood of magnitude
<br />which may occur on an average of once in lOO years, or has a l% chance each
<br />year). The Flood Hazard Areas are shown in the Special Flood Hazard Information
<br />Report on Smith River, by the U. S. Corps of Engineers, August 1971, on maps
<br />prepared by the City's Engineering Division based on available historic and
<br />hydrologic data, and on maps to be prepared by the Department of Housing and
<br />Urban Development.
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<br />I. FLOOD PLAINS - The areas of land which have in the past been covered or can
<br />be reasonably expected in the future to be covered temporarily by flood waters.
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<br />J. FLOODWAY FRINGE (F.F.) - That portion of a flood plain which is in a Flood
<br />Hazard Area, but which is outside of the Floodway.
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<br />K. FLOODPROOFING - Combinations of structural provisions, changes, or adjustments
<br />to properties and structures subject to flooding, designed and used primarily
<br />for the reduction or elimination of flood damages to properties, water and
<br />sanitary facilities, structures, and contents of buildings in the regulatory
<br />flood plain.
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<br />L. FLOODWAY - The channel of a river, other watercourse or ravine and those
<br />portions of the adjoining flood plains which are reasonably required to
<br />carry and discharge the waters of the 100 year flood (Intermediate Regional
<br />Flood). The floodway will be deemed to be a nonencroachable area.
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<br />M. OBSTRUCTION - Any dam, wall, wharf, embankment, levee, dike, pile, abutment,
<br />projection, excavation, channel rectification, culvert, building, wire, fence,
<br />stockpile, refuse, fill, structure, or matter in, along, across, or projecting
<br />into any channel. watercourse, or flood hazard area which may impede, retard,
<br />or change the direction of flow of water, either in itself or by catching or
<br />collecting debris carried by such water; or matter of any kind which is placed
<br />where the flow of water might carry the same downstream, resulting in damage
<br />to property or the endangerment of life.
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