No development, except as provided in Subsection B below, shall be allowed in floodplain areas which will:
Cause an obstruction to flow, defined in § 143-34 as any development which physically blocks the conveyance of floodwaters by itself or in conjunction with future similar development causing an increase in regional flood height; or
Cause an increase in regional flood height due to floodplain storage area lost, which is equal to or exceeding 0.01 foot.
Obstructions or increases equal to or greater than 0.01 foot may only be permitted if amendments are made to this chapter, the Official Floodplain Zoning Maps, including floodway lines and water surface profiles, in accordance with Article VIII, and only if the total cumulative effect of the proposed development will not increase the height of the regional flood more than 1.0 foot for the affected hydraulic reach of the stream unless a waiver is secured from FEMA for the maximum increase of 1.0 foot.
The Zoning Administrator shall deny permits if it is determined the proposed development will obstruct flow or increase regional flood heights 0.01 foot or more, based on the officially adopted FIRMs or other adopted map. NOTE: This section refers to obstructions or increases in base flood elevations as shown on the officially adopted FIRMs or other adopted map. Any such alterations must be reviewed and approved by FEMA and the DNR.
Prior to any alteration or relocation of a watercourse, and prior to the issuance of any land use permit which may be required for the alteration or relocation of a watercourse, the Zoning Administrator shall notify, in writing, adjacent municipalities, the appropriate district office of the Department of Natural Resources and the appropriate office of FEMA and shall require the applicant to secure all necessary state and federal permits. The flood-carrying capacity within the altered or relocated portion of any watercourse shall be maintained.
Development which requires a permit from the Department of Natural Resources, under Chs. 30 and 31, Wis. Stats., such as docks, piers, wharves, bridges, culverts, dams and navigational aids, may be allowed, provided that the necessary local permits are obtained and necessary amendments to the official floodway lines, water surface profiles, Floodplain Zoning Maps or this chapter are made according to Article VIII.
Public or private campgrounds shall have a low flood damage potential and shall meet the following provisions:
The campground is approved by the Department of Health and Family Services.
A land use permit for the campground is issued by the Zoning Administrator.
The character of the river system and the elevation of the campground is such that a seventy-two-hour warning of an impending flood can be given to all campground occupants.
There is an adequate flood warning procedure for the campground that offers the minimum notice required under this section to all persons in the campground. This procedure shall include a written agreement between the campground owner and the Village Emergency Management Director which specifies the flood elevation at which evacuation shall occur, personnel responsible for monitoring flood elevations, types of warning systems to be used and the procedures for notifying at-risk parties, and the methods and personnel responsible for conducting the evacuation.
This agreement shall be for no more than one calendar year, at which time the agreement shall be reviewed and updated, by the officials identified in Subsection D, to remain in compliance with all applicable regulations, including those of the state Department of Health and Family Services and all other applicable regulations.
Only camping units are allowed.
The camping units may not occupy any site in the campground for more than 180 consecutive days, at which time the camping unit must be removed from the floodplain for a minimum of 24 hours.
All camping units that remain on site for more than 30 days shall be issued a limited authorization by the campground operator, a written copy of which is kept on file at the campground. Such authorization shall allow placement of a camping unit for a period not to exceed 180 days and shall ensure compliance with all the provisions of this section.
The municipality shall monitor the limited authorizations issued by the campground operator to assure compliance with the terms of this section.
The campground shall have signs clearly posted at all entrances warning of the flood hazard and the procedures for evacuation when a flood warning is issued.
All service facilities, including but not limited to refuse collection, electrical service, natural gas lines, propane tanks, sewage systems and wells, shall be properly anchored and placed at or floodproofed to the flood protection elevation.