Minutes 11/09/1976 (2) - Laserfiche WebLink

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E. ENCROAC~~NT LINES - The lateral limits or line drawn along each side and generally parallel to a watercourse, body of water, or ravine to preserve the flood carrying capacity of the stream or other body of water and its flood plain, and to assure attainment of the basic objective of improvement plans that may be considered or proposed. Their location along a stream should be such that the floodways between them will effectively carry and discharge a flood of not less than the 100 year flood hereinafter referred to. F. EQUAL DEGREE OF ENCROACH}ffiNT - A standard applied in determining the location of encroachment lines so that the hydraulic capacity of flood plain lands on each side of a channel are reduced by an equal amount due to flood plain encroachments. This standard will not be applied where encroachment prior to this ordinance exists. G. FLOOD - A temporary rise in stream flow or stage that results in inundation of the areas adjacent to the channel. H. FLOOD HAZARD AREA - The maximum area of a flood plain which will be inundated by a 100 year flood, an Intermediate Regional Flood (a flood of magnitude which may occur on an average of once in 100 years, or has a 1% chance each year). The Flood Hazard Areas are shown in the Special Flood Hazard Information Report on Smith River, by the U. S. Corps of Engineers, August 1971, on maps prepared by the City's Engineering Division based on available historic and hydrologic data, and on maps to be prepared by the Department of Housing and Urban Development. ~- I. FLOOD PLAINS - The areas of land which have in the past been covered or can be reasonably expected in the future to be covered temporarily by flood waters. J. FLOODWAY FRINGE (F.F.) - That portion of a flood plain which is in a Flood Hazard Area, but which is outside of the F100dway. K. FLOODPROOFING - Combinations of structural provisions, changes, or adjustments to properties and structures subject to flooding, designed and used primarily for the reduction or elimination of flood damages to properties, water and sanitary facilities, structures, and contents of buildings in the regulatory flood plain. /'"" L. FLOODWAY - The channel of a river, other watercourse or ravine and those portions of the adjoining flood plains which are reasonably required to carry and discharge the waters of the 100 year flood (Intermediate Regional Flood). The floodway will be deemed to be a nonencroachable area. M. OBSTRUCTION - Any dam, wall, wharf, embankment, levee, dike, pile, abutment, projection, excavation, channel rectification, culvert, building, wire, fence, stockpile. refuse, fill, structure, or matter in, along, across, or projecting into any channel, watercourse, or flood hazard area which may impede, retard, or change the direction of flow of water, either in itself or by catching or collecting debris carried by such water; or matter of any kind which is placed where the flow of water might carry the same downstream, resulting in damage to property or the endangerment of life. -2-