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Chapter 17
<br /> reconstructed, altered, or moved into the floodfringe (3) COMMERCIAL USES. Any commercial
<br /> area shall meet or exceed the following standards; structure or building which is to be erected,
<br /> (a) The elevation of the lowest floor excluding constructed, reconstructed, altered or moved into the
<br /> the basement or crawlway, shall be at or above the floodfringe area shall meet the requirements of
<br /> flood protection elevation16 except where par. s. 17.39(2). Storage yards, parking lots and other
<br /> (b) is applicable. The fill elevation shall be accessory structures or land uses may be at lower ,
<br /> one foot or more above the regional flood elevation elevations, subject to the requirements of sub.(5).
<br /> extending at least 15 feet beyond the limits of the However, no such area in general use by the public
<br /> structure. The Department may authorize other shall be inundated to a depth greater than two feet or
<br /> floodproofing measures where existing streets or subjected to flood velocities greater than two feet per
<br /> sewer lines are at elevations which make compliance second during the regional flood. Inundation of such
<br /> impractical provided the Board of Adjustment grants yards or parking areas exceeding two feet may be
<br /> a variance due to dimensional restrictions. allowed provided an adequate warning system exists
<br /> (b) The basement or crawlway floor may be to protect life and property.
<br /> placed at the regional flood elevation providing it is (4) MANUFACTURING AND INDUSTRIAL
<br /> floodproofed to the flood protection elevation. No USES. Any manufacturing, or industrial structure or
<br /> permit or variance shall allow any basement or building which is to be erected, constructed,
<br /> crawlway below the regional flood elevation. reconstructed, altered or moved into the floodfringe
<br /> (c) Contiguous dryland access'6 shall be area shall be protected to the flood protection
<br /> provided from a structure or building to land which elevation utilizing fill, levees, floodwalls, adequate
<br /> is outside of the floodplain, except as provided in flood proofing measures in accordance with s. 17.65,
<br /> para. (d), or any combination thereof. On streams or rivers
<br /> (d) In existing developments, where existing having prolonged flood durations, greater protection
<br /> streets or sewer lines are at elevations which make may be required to minimize interference with
<br /> compliance with par. (c) impractical,the county may normal plant operations. A lesser degree of
<br /> permit new development and substantial protection, compatible with the criteria in par. (4)
<br /> improvements where access roads are at or below the and (6) may be permissible for storage yards,
<br /> regional flood elevation,provided: parking lots and other accessory structures or uses.
<br /> 1. The county has written assurance from the (5) STORAGE MATERIALS. The storage of
<br /> appropriate local units of police, fire and emergency materials that are buoyant, flammable, explosive, or
<br /> services that rescue and relief will be provided to the which in times of flooding, could be injurious to
<br /> structure(s) by wheeled vehicles, considering the property,water quality or human, animal, plant,fish i
<br /> anticipated depth, duration and velocity of the or aquatic life, shall be at or above the flood
<br /> regional flood event; or protection elevation for the particular area or
<br /> 2. The county's natural disaster plan been floodproofed in compliance with s. 17.65. Adequate ,
<br /> approved by both, the Division of Emergency measures shall be taken to assure that said materials
<br /> Government and the Department. will not enter the river or stream during flooding.
<br /> (2) ACCESSORY SM UCTURES OR USES. An (6) PUBLIC UTILITIES, STREETS AND
<br /> accessory structure or use" not connected to a BRIDGES. All utilities, streets and bridges should
<br /> principal structure, including nonresidential be designed to be compatible with the local I ,
<br /> agricultural structures, shall meet all the applicable comprehensive floodplain development plans;and
<br /> provisions of s. 17.335(1)(a), (c) and (d), and sub. (a) When failure or interruption of public
<br /> (5)below. A lesser degree of protection, compatible utilities, streets and bridges would result in danger to
<br /> with these criteria and the criteria in sub. (4) may be the public health or safety or where such facilities
<br /> permissible for an accessory structure or use are essential to the orderly functioning of the area,
<br /> providing that the site is not inundated to a depth construction of and substantial improvements to such
<br /> greater than 2 feet or subjected to flood velocities facilities may only be permitted if they are A_
<br /> greater than 2 feet per second during the regional floodproofed, in compliance with s. 17.65, to the
<br /> flood. flood protection elevation;
<br /> (b) Minor or auxiliary roads or nonessential
<br /> 15See 8.17.05(26)for the definition. utilities may be constructed at lower elevations
<br /> providing they withstand flood forces to the regional
<br /> 16See s.17.05(11)for the definition. flood elevation.
<br /> (7) SEWAGE SYSTEMS. All on-site sewage
<br /> 17See 8.17.05(2)for the definition. disposal systems shall be floodproofed to the flood
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