Wisconsin Administrative Code › Department of Natural Resources › NR 100-199 - Environmental Protection - General › Chapter NR 129 - Floodplain and shoreland mapping grant program › Section NR 129.03 - Definitions

Current through June 24, 2024
For the purposes of this chapter:
(1) "Approval" means the written approval of
				the department.
(2) "Authorized
				representative" means the municipal official or employee designated by
				resolution of the governing body of a municipality to act on behalf of the
				municipality in obtaining a grant under this chapter.
(3) "Detailed floodplain study" means a
				hydrologic and hydraulic analysis to determine the flood flow discharge for a
				given flood frequency and the resulting water surface profile of a
				watercourse.
(4) "Department" means
				the department of natural resources.
(5) "Flood" means a general and temporary
				condition of partial or complete inundation of normally dry land areas caused
				by the overflow or rise of rivers, streams, or lakes.
(6) "Floodplain" means the land which has
				been or may be hereafter covered by flood water during the regional flood. The
				floodplain includes the floodway and the flood fringe.
(7) "Flood fringe" means that portion of the
				floodplain outside of the floodway, which is covered by flood waters during the
				regional flood, and is generally associated with standing water rather than
				rapidly flowing water.
(8)
				"Floodplain management" means the full range of public policy and action for
				insuring wise use of floodplains. It includes everything from the collection
				and dissemination of flood control information to actual acquisition of
				floodplain lands and the enactment and administration of codes, ordinances and
				statutes for land use in the floodplain.
(9) "Floodway" means the channel of a river
				or stream and those portions of the floodplain adjoining the channel required
				to carry and discharge the flood water or flood flows associated with the
				regional flood.
(10) "High flood
				damage potential" means the potential for any danger to life or health and any
				significant economic loss to a structure or building or its contents.
(11) "Municipality" means any county, city or
				village.
(12) "Official floodplain
				zoning map" means the map or maps adopted by a county, city or village,
				approved by the department, referenced in an official floodplain zoning
				ordinance and used for regulatory purposes.
(13) "Official shoreland zoning map" means
				the map or maps adopted by a county, approved by the department, referenced in
				the county's official shoreland zoning ordinance and used for regulatory
				purposes.
(14) "Regional flood"
				means the flood determined to be representative of large floods known to have
				generally occurred in Wisconsin and which may be expected to occur on a
				particular stream because of like physical characteristics. The regional flood
				is based upon a statistical analysis of streamflow records available for the
				watershed and/or an analysis of rainfall and runoff characteristics in the
				general watershed region. The flood frequency of the regional flood is once in
				every 100 years; this means that in any given year there is a 1% chance that
				the regional flood may occur. During a typical 30-year mortgage period, the
				regional flood has a 26% chance of occurring.
(15) "Shoreland" means lands within the
				following distances from the ordinary high-water mark of navigable waters: 1000
				feet from a lake, pond, or flowage; and 300 feet from a river or stream or to
				the landward side of the floodplain, whichever distance is greater.
(16) "Structure" means any public or private
				man-made object with form, shape and utility, either permanently or temporarily
				attached to or placed upon the ground, river bed, stream bed or
				lakebed.
(17) "Topographic map"
				means a map representing a portion of the earth's surface showing the culture,
				relief, hydrography, and vegetation.
(18) "Water surface profile" means a
				graphical representation of the elevation of the water surface throughout a
				county, city or village based upon a certain flow passing through the river or
				stream. A water surface profile based upon flows occurring during a regional
				flood is used in regulating floodplain areas.