Unless specifically defined below, words or phrases used in this
ordinance shall be interpreted so as to give them the same meaning
as they have at common law and to give this ordinance its most reasonable
application.
A ZONES
Those areas shown on a community's "Official Flood Plain
Zoning Map" which would be inundated by the "base flood" or "regional
flood" as defined herein. These areas are designated on the map as
"A" Zones. The "A" Zones may or may not be reflective of flood profiles
depending on the availability of data for a given area.
ACCESSORY USE
An accessory use is any facility, structure, building or
use which is accessory or incidental to the principal use of a property,
structure or building.
BASE FLOOD
A flood having a one-percent chance of being equaled or exceeded
in any given year. (See also Regional Flood)
BASE FLOOD ELEVATION
An elevation equal to that which reflects the height of the
base flood as defined in the definition of "base flood" above.
BASEMENT
Any enclosed area of a building having its floor sub-grade,
i.e., below ground level, on all sides.
BOARD OF APPEALS
The body established under § 62.23(7), Wis. Stats.,
and designated as the "Board of Appeals."
BULKHEAD LINE
A geographic line along a reach of navigable body of water
that has been adopted by a municipal ordinance and approved by the
Department of Natural Resources pursuant to § 80.11, Wis.
Stats., and which allows complete filling on the landward side except
where such filling is prohibited by the floodway provisions of this
ordinance.
CERTIFICATE OF COMPLIANCE
A certification by the Building Inspector that a structure,
use of development is in compliance with all provisions of this ordinance.
CHANNEL
A channel is a natural or artificial watercourse with definite
bed and banks to confine and conduct the normal flow of water.
CRAWLWAYS or CRAWL SPACE
An enclosed area below the first usable floor of a building,
generally less than five feet in height, used for access to plumbing
and electrical utilities.
DECK
An unenclosed exterior structure that has no roof or sides,
but has a permeable floor which allows the infiltration of precipitation.
DEVELOPMENT
Any artificial change to improved or unimproved real estate,
including, but not limited to, the construction of buildings, structures
or accessory structures; the construction of additions or alterations
to buildings, structures or accessory structures; the repair of any
damaged structure or the improvement or renovation of any structure,
regardless of percentage of damage or improvement; the placement of
buildings or structures; subdivision layout and site preparation;
mining, dredging, filling, grading, paving, excavation or drilling
operations; the storage, deposition or extraction of materials or
equipment; and the installation, repair or removal of public or private
sewage disposal systems or water supply facilities.
DRYLAND ACCESS
A vehicular access route which is above the regional flood
elevation and which connects land located in the floodplain to land
outside the floodplain, such as a road with its surface above regional
flood elevation and wide enough for wheeled rescue and relief vehicles.
ENCROACHMENT
An encroachment is any fill, structure, building, accessory
use, use or development in the floodway.
ENCROACHMENTS/FLOODWAY LINES
Encroachment lines are limits of obstruction to flood flows.
These lines are on both sides and generally parallel to the stream.
The lines are established by assuming that the area landward (outside)
of the encroachment lines will be ultimately developed in such a way
that it will not be available to convey flood flows.
EQUAL DEGREE OF HYDRAULIC ENCROACHMENT
The effect of any encroachment into the floodway must be
computed by assuming an equal degree of hydraulic encroachment on
the other side of a river or stream for a significant hydraulic reach.
This computation assures that property owners up, down or across the
river of hydraulic encroachment. Encroachments are analyzed on the
basis of the effect upon hydraulic conveyance but upon the distance
the encroachment extends into the floodway.
FLOOD FREQUENCY
The probability of a flood occurrence which is determined
from statistical analyses. The frequency of a particular flood event
is usually expressed as occurring, on the average once in a specified
number of years or as a percent chance of occurring in any given year.
FLOOD FRINGE
The flood fringe is that portion of the flood plain outside
of the floodway which is covered by flood waters during the regional
flood; it is generally associated with standing water rather than
rapidly flowing water.
FLOOD HAZARD BOUNDARY MAP
A map prepared by the Federal Emergency Management Agency,
designating areas of special flood hazard within a given community.
Flood hazard areas are designated as "A" Zones. Said map forms the
basis for both the regulatory and insurance aspects of the National
Flood Insurance Program.
FLOOD INSURANCE RATE MAP (FIRM)
A map of a community on which the Federal Insurance Administration
has delineated both special flood hazard areas (the floodplain) and
the risk premium zones applicable to the community. This map can only
be amended by the Federal Emergency Management Agency.
FLOOD INSURANCE STUDY
A technical engineering examination, evaluation, and determination
of the local flood hazard areas. It provides maps designating those
areas affected by the regional flood and provides both flood insurance
rate zones and base flood elevations and may provide floodway lines.
The flood hazard areas are designated as numbered and unnumbered A-Zones.
Flood Insurance Rate Maps, that accompany the Flood Insurance Study,
form the basis for both the regulatory and the insurance aspects of
the National Flood Insurance Program.
FLOOD INSURANCE STUDY MAP
A map prepared by the Federal Emergency Management Agency,
designating areas of special flood hazard and flood insurance rate
zones for a given community. Flood hazard and insurance rate zones
are designated as "A" Zones. Said map forms the basis for the regulatory
and/or the insurance aspects of the National Flood Insurance Programs.
FLOOD or FLOODING
A general and temporary condition of partial or complete
inundation of normally dry land areas caused by one of the following
conditions:
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a)
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The overflow or rise of inland waters,
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b)
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The rapid accumulation or runoff of surface waters from any
source,
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c)
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The inundation caused by waves or currents of water exceeding
anticipated cyclica levels along the shore of Lake Michigan or Lake
Superior, or
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d)
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The sudden increase caused by an unusually high water level
in a natural body of water, accompanied by a severe storm, or by an
unanticipated force of nature, such as a seiche, or by some similarly
unusual event.
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FLOOD PLAIN
The flood plain is the land which has been or may be hereafter
covered by flood water during the regional flood. The flood plain
includes the floodway and the flood fringe.
FLOOD PROFILE
A graph or longitudinal profile showing the relationship
of the water surface elevation of a flood event to locations along
a stream or river.
FLOOD PROOFING
Flood proofing involves any combination of structural provisions,
changes or adjustments to properties and structures subject to flooding,
primarily for the purpose of reducing or eliminating flood damage
to properties, water and sanitary facilities, structures and contents
of buildings in flood hazard areas.
FLOOD PROTECTION ELEVATION
The flood protection elevation shall correspond to a point
two feet of freeboard above the water surface profile associated with
the regional flood and the official floodway lines. Also see "Freeboard."
FLOODWAY
The floodway is the channel of a river or stream and those
portions of the flood plain adjoining the channel required to carry
and discharge the flood water or flood flows associated with the regional
flood.
FREEBOARD
"Freeboard" is a factor of safety usually expressed in terms
of a certain amount of feet above a calculated flood level. Freeboard
compensates for the many unknown factors that contribute to flood
heights greater than the height calculated. These unknown factors
include but are not limited to ice jams, debris openings and floodways,
the effects of urbanization on the hydrology of the watershed, loss
of flood storage areas due to development and aggradation of the river
or stream bed.
HISTORIC STRUCTURE
Any structure that is either:
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a)
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Listed individually on the National Register of Historic Places
or preliminarily determined by the Secretary of the Interior as meeting
the requirements for individual listing on the National Register,
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b)
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Certified or preliminarily determined by the Secretary of the
Interior as contributing to the historical significance of a registered
historic district or a district preliminarily determined by the Secretary
to qualify as a registered historic district,
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c)
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Individually listed on a state inventory of historic places
in states with historic preservation programs which have been approved
by the Secretary of the Interior, or
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d)
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Individually listed on a local inventory of historic places
in communities with historic preservation programs that have been
certified either by an approved state program, as determined by the
Secretary of the Interior; or by the Secretary of the Interior in
states without approved programs.
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LAND USE
Any "development" as defined in Subsection K(1)(l).
NEW CONSTRUCTION
For floodplain management purposes, "new construction" means
structures for which the start of construction commenced on or after
the effective date of floodplain zoning regulations adopted by this
community and includes any subsequent improvements to such structures.
For the purpose of determining flood insurance rates, it includes
any structures for which the "start of construction" commenced on
or after the effective date of an initial FIRM or after December 31,
1974, whichever is later, and includes any subsequent improvements
to such structures.
NONCONFORMING STRUCTURE
An existing lawful structure or building which is not in
conformity with the dimensional or structural requirements of this
ordinance for the area of the floodplain which it occupies. (For example,
an existing residential structure in the floodfringe district is a
conforming use. However, if the lowest floor is lower than the flood
protection elevation, the structure is nonconforming.)
NONCONFORMING USE
A nonconforming use is an existing lawful use of a structure,
building or accessory use which is not in conformity with the provisions
of the Flood Plain Zoning Ordinance for the area of the flood plain
which it occupies.
OFFICIAL FLOOD PLAIN ZONING MAP
That map, adopted and made part of this ordinance, which
has been approved by the Department of Natural Resources and the Federal
Emergency Management Agency and which delineates those areas which
would be inundated by the base or regional flood, including but not
limited to, numbered and unnumbered "A" Zones and where applicable,
floodways.
OFFICIAL LETTER OF MAP AMENDMENT
Official notification from the Federal Emergency Management
Agency that a Flood Hazard Boundary Map or Flood Insurance Study Map
has been amended.
REACH - HYDRAULIC
A hydraulic reach along a river or stream is that portion
of the river of stream extending from one significant change in the
hydraulic character of the river or stream to the next significant
change. These changes are usually associated with breaks in the slope
of the water surface profile, and may be caused by bridges, dams,
expansion and contraction of the water flow, and changes in stream
bed slope or vegetation.
REGIONAL FLOOD
The regional flood is a 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 flood frequency of the regional flood
is once every 100 years; this means that in any given year, there
is a 1% chance that the regional flood may occur or be exceeded. During
a typical thirty-year mortgage period, the regional flood has a 26%
change of occurrence.
START OF CONSTRUCTION
The date the building permit was issued, provided the actual
start of construction, repair, reconstruction, rehabilitation, addition,
placement, or other improvement was within 180 days of the permit
date. The actual start means either the first placement of permanent
construction on a site, such as the pouring of slab or footings, the
installation of piles, the construction of columns, or any work beyond
initial excavation, or the placement of a manufactured home on a foundation.
Permanent construction does not include land preparation, such as
clearing, grading and filling, nor does it include the installation
of streets and/or walkways, nor does it include excavation for a basement,
footings, piers or foundations or the erection of temporary forms,
nor does it include the installation on the property of accessory
buildings, such as garages or sheds not occupied as dwelling units
or not part of the main structure. For an alteration, the actual start
of construction means the first alteration of any wall, ceiling, floor
or other structural part of a building, whether or not the alteration
affects the external dimensions of the building.
STORAGE CAPACITY OF A FLOOD PLAIN
The volume of space above an area of flood plain land that
can be occupied by flood water of a given stage at a given time regardless
of whether the water is moving.
STRUCTURE
Anything constructed or erected, the use of which requires
a permanent or temporary location on or in the ground, stream bed
or lake bed, which includes but is not limited to objects such as
buildings, factories, sheds and cabins, mobile homes, gas or liquid
storage tanks, bridges or culverts.
SUBSTANTIAL DAMAGE
Damage of any origin sustained by a structure, whereby the
cost of restoring the structure to its pre-damaged condition would
equal or exceed 50% of the equalized assessed value of the structure
before the damage occurred.
SUBSTANTIAL IMPROVEMENT
Any repair, reconstruction or improvement of a structure,
the cost of which equals or exceeds 50% of the assessed value of the
structure, either before the improvement or repair is started, or
if the structure has been damaged and is being restored, before the
damage occurred. The term does not, however, include either: (a) Any
project for state or local health, sanitary or safety code specifications
which are solely necessary to assure safe living conditions, or (b),
any alterations of a structure or site documented as deserving preservation
by the Wisconsin State Historical Society or listed on the National
Register of Historic Places. Ordinary maintenance repairs are not
considered structural repairs, modifications or additions; such ordinary
maintenance repairs include internal and external painting, decorating,
paneling and the replacement of doors, windows and other nonstructural
components.
UNNECESSARY HARDSHIP
Where special conditions affecting a particular property,
which were not self-created, have made strict conformity with restrictions
governing areas, setbacks, frontage, height or density necessarily
burdensome or unreasonable in light of the purposes of this ordinance.
UTILITIES
Any public water supply or waste collection system including
but not limited to public wells and their attendant facilities and
public sewage collection systems and treatment facilities.
VARIANCE
An authorization by the board of adjustment or appeals for
the construction or maintenance of a building or structure in a manner
which is inconsistent with dimensional standards (not uses) contained
in the floodplain zoning ordinance.
VIOLATION
The failure of a structure or other development to be fully
compliant with the floodplain zoning ordinance. A structure or other
development without required permits, lowest floor elevation documentation,
floodproofing certificates or required floodway encroachment calculations
is presumed to be in violation until such time as that documentation
is provided.
WATER SURFACE PROFILE
A graphical representation showing the elevation of the water
surface of a watercourse for each position along a reach of river
or stream at a certain flood flow. A water surface profile of the
regional flood is used in regulating floodplain areas.
WATERSHED
The entire region contributing runoff or surface water to
a watercourse or body of water.
WELL
An excavation opening in the ground made by digging, boring,
drilling, driving or other methods, to obtain groundwater regardless
of its intended use.