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17-18 the flood protection;elevation and is contiguous to SUBCHAPTER VIII land lying outside the,floodplain; FLOOD STORAGE DISTRICT (4) Any fill or encroachment into the floodplain that will obstruct flow causing an increase of 0.01 17.81 FLOOD STORAGE DISTRICT. (1) :Intent foot or more in,regional flood height; and,Purpose. The Flood Storage District delineates (5) Any upgrading of floodplain zoning that portion of the floodplain where storage of • ordinances text required by s. NR 116.05, Wis. flood waters has been taken into account. The Adm. Code, or otherwise required by law, or for district provides for the protection of the storage changes by the county. areas and assures that development in the storage areas will not cause higher floodplain elevations. 17.72 PROCEDURES. (intro.) Amendments to (2) Criteria for establishing flood storage this ordinance may be made upon petition of any districts. A "Flood storage district" may be interested party according to the provisions of s. established for the area landward of the floodway 59.97, Stats. Such petitions shall include all in lieu of the floodfringe designation where necessary data required by ss. 17.44 and 17.61(2). floodplain storage will decrease the regional flood (1) Copies of any amendment proposed shall be elevation, provided that: referred to the zoning agency for a public hearing (a) The Department of Natural Resources and recommendation to the governing body. approves the methodology used to analyze Copies of the proposed amendment and notice of floodplain storage to determine revised regional the public hearing shall be submitted to the flood elevations. appropriate District office of the Department of (b) The municipality adopts required standards Natural Resources for review prior to the hearing. pertaining to the flood storage district, pursuant to The amendment procedure shall comply with the Chapter NR 116 Wisconsin Administrative Code. provisions of s. 59.97, Stats., except that no (3) Applicability. The provisions of this section provision of this chapter shall be construed to apply to all areas within the flood storage district, require town board approval or allow town board as shown on the official floodplain zoning maps, veto of any such amendment. and to those portions of the general floodplain (2) No amendment to the maps or text of this district that are determined to be in the flood ordinance shall become effective until reviewed storage area. and approved by the Department. (4) Development in Flood Storage District. (a) (3) All persons petitioning for a map amendment Development in a flood storage district shall not which involves an obstruction to flow causing an cause an increase equal to or greater than 0.01 of.a increase of 0.01 foot or more in the height of the foot in the height of the regional flood. regional flood shall obtain flooding easements, or (b) When any proposed development would other appropriate legal arrangements, from all remove flood storage volume, an equal volume of adversely affected property owners and notify local storage as defined by the ground surface and the units of government before the amendment can be regional flood elevation shall be provided to approved by the governing body. compensate for the volume of storage which is lost. (4) When considering amendments to the official Excavation below the groundwater table is not floodplain zoning map, in areas where no water considered as providing an equal volume of surface profiles exist, the committee and board storage. shall consider data submitted by the Department, 1. No area in the floodplain may be removed the zoning administrator's visual on-site from the flood storage district unless it can be inspections and other available information. (See shown that the area has been filled to the flood s. 17.12.) protection elevation and is contiguous to other lands lying outside the floodplain. [17.73- 17.80 reserved for future use.] 2. If compensatory storage cannot be provided, the area may not be developed unless the entire affected flood storage area is rezoned to the floodfringe district. (c) A flood zone permit from the Dane County Zoning Administrator is required for any development in a flood storage district. rev. 043095