[Ord. No. 2131 § 1, 1-15-2001; Ord. No. 2397 § 1, 2-21-2006; Ord.
No. 2634 § 1, 2-22-2011]
Unless specifically defined below, words or phrases used in
this Chapter shall be interpreted so as to give them the same meaning
they have in common usage and to give this Chapter its most reasonable
application. The following words or phrases have the following meanings
in this Chapter:
AGENCY
The Federal Emergency Management Agency (FEMA).
AGRICULTURAL STRUCTURE
Any structure used exclusively in connection with the production,
harvesting, storage, drying or raising of agricultural commodities.
APPEAL
A request for review of the City Administrator's interpretation
of any provision of this Chapter or a request for a variance.
APPURTENANT STRUCTURE
A structure that is on the same parcel of property as the
principal structure to be insured and the use of which is incidental
to the use of the principal structure.
AREA OF SPECIAL FLOOD HAZARD
The land in the floodplain within a community subject to
a one percent (1%) or greater chance of flooding in any given year.
BASE FLOOD
The flood having a one percent (1%) chance of being equal
or exceeded in any given year.
BASEMENT
Any area of the structure having its floor subgrade (below
ground level) on all sides.
COMMUNITY
Any State or area or political subdivision thereof which
has authority to adopt and enforce floodplain management regulations
by law or ordinance for the areas within it jurisdiction. Where appropriate,
the term "community" shall also specifically mean
the City of Centralia, Missouri.
DEVELOPMENT
Any man-made change to improved or unimproved real estate
including, but not limited to, buildings or other structures, levees,
levee systems, mining, dredging, filling, grading, paving, excavation
or drilling operations, or storage of equipment or materials.
ELEVATED BUILDING
For insurance purposes, a non-basement building which has
its lowest elevated floor raised above ground level by foundation
walls, shear wall, posts, piers, pilings or columns.
EXISTING CONSTRUCTION
For the purposes of determining rates, structures for which
the "start of construction" commenced before the effective date of
the Flood Insurance Rate Map (FIRM) or before January 1, 1975, for
FIRMs effective before that date. "Existing construction" may also be referred to as "existing structures".
EXISTING MANUFACTURED HOME PARK OR SUBDIVISION
A manufactured home park or subdivision for which the construction
of facilities for servicing the lots on which the manufactured homes
are to be affixed (including, at a minimum, the installation of utilities,
the construction of streets, and either final site grading or the
pouring of concrete pads) is completed before the effective date of
the floodplain management regulations adopted by a community.
EXPANSION TO AN EXISTING MANUFACTURED HOME PARK OR SUBDIVISION
The preparation of additional sites by the construction of
facilities for servicing the lots on which the manufactured homes
are to be affixed (including the installation of utilities, the construction
of streets, and either final site grading or the pouring of concrete
pads).
FLOOD BOUNDARY AND FLOODWAY MAP (FBFM)
An Official Map of a community on which the Federal Insurance
Administrator has delineated both special flood hazard areas and the
designated regulatory floodway.
FLOOD ELEVATION DETERMINATION
A determination by the Federal Insurance Administrator of
the water surface elevations of the base flood, that is, the flood
level that has a one percent (1%) or greater chance of occurrence
in any given year.
FLOOD INSURANCE STUDY (FIS)
An examination, evaluation and determination of flood hazards
and, if appropriate, corresponding water surface elevations.
FLOOD or FLOODING
A general and temporary condition of partial or complete
inundation of normally dry land area from (1) the overflow of inland
water and/or (2) the unusual and rapid accumulation or runoff of surface
waters from any source.
FLOOD HAZARD BOUNDARY MAP (FHBM)
An Official Map of a community, issued by the Federal Insurance
Administrator, where the boundaries of the flood areas having special
flood hazards have been designated as (unnumbered or numbered) A Zones.
FLOOD INSURANCE RATE MAP (FIRM)
An Official Map of a community on which the Federal Insurance
Administrator has delineated both the special flood hazard areas and
the risk premium zones applicable to the community.
FLOODPLAIN MANAGEMENT
The operation of an overall program of corrective and preventive
measures for reducing flood damage including, but not limited to,
emergency preparedness plans, flood control works and floodplain management
regulations.
FLOODPLAIN MANAGEMENT REGULATIONS
Zoning ordinances, subdivision ordinances, building codes,
health regulations, special purpose ordinances (such as floodplain
and grading ordinances) and other applications of police power, including
the provisions of this Chapter. The term describes such State or local
regulations, in any combination thereof, that provide standards for
the purpose of flood damage prevention and reduction.
FLOODPROOFING
Any combination of structural and non-structural additions,
changes or adjustments to structures that reduce or eliminate flood
damage to real estate or improved real property, water and sanitary
facilities, or structures and their contents.
FLOODWAY or REGULATORY FLOODWAY
The channel of a river or other watercourse and the adjacent
land areas that must be reserved in order to discharge the base flood
without cumulatively increasing the water surface elevation more than
one (1) foot.
FREEBOARD
A factor of safety usually expressed in feet above a flood
level for purposes of floodplain management. Freeboard tends to compensate
for the many unknown factors that could contribute to flood heights
greater than the height calculated for a selected size flood and floodway
conditions, such as bridge openings and the hydrological effect of
urbanization of the watershed.
FUNCTIONALLY DEPENDENT USE
A use that cannot perform its intended purpose unless it
is located or carried out in close proximity to water. This term includes
only docking facilities and facilities that are necessary for the
loading and unloading of cargo or passengers, but does not include
long-term storage or related manufacturing facilities.
HIGHEST ADJACENT GRADE
The highest natural elevation of the ground surface prior
to construction next to the proposed walls of a structure.
HISTORIC STRUCTURE
Any structure that is:
1.
Listed individually in the National Register of Historic Places
(a listing maintained by the Department of the Interior) or preliminarily
determined by the Secretary of the Interior as meeting the requirements
for individual listing on the National Register;
2.
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;
3.
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
4.
Individually listed on a local inventory of historic places
in communities with historic preservation programs that have been
certified either:
a.
By an approved State program as determined by the Secretary
of the Interior, or
b.
Directly by the Secretary of the Interior in States without
approved programs.
LOWEST FLOOR
The lowest floor of the lowest enclosed area (including basement).
An unfinished or flood-resistant enclosure, usable solely for parking
of vehicles, building access or storage, in an area other than a basement
area, is not considered a building's lowest floor, provided that
such enclosure is not built so as to render the structure in violation
of the applicable floodproofing design requirements of this Chapter.
MANUFACTURED HOME
A factory-built structure that is manufactured or constructed
in compliance with and under the authority of the Federal Manufactured
Housing Construction and Safety Standards Act of 1974 beginning at
42 United States Code Section 5401 and regulations thereunder and
is to be used as a place for human habitation but which is not constructed
or equipped with a permanent hitch or other device allowing it to
be moved other than for the purpose of moving to a permanent site,
and which does not have permanently attached to its body or frame
any wheels or axles.
MAP
The Flood Hazard Boundary Map (FHBM), Flood Insurance Rate
Map (FIRM) or the Flood Boundary and Floodway Map (FBFM) for a community
issued by the Federal Emergency Management Agency (FEMA).
MEAN SEA LEVEL
For purpose of the National Flood Insurance Program (NFIP),
the National Geodetic Vertical Datum (NGVD) of 1929 or other datum
to which base flood elevations shown on a community's Flood Insurance
Rate Map (FIRM) are referenced.
NEW CONSTRUCTION
For the purposes of determining insurance rates, structures
for which the "start of construction" commenced on or after the effective
date of an initial Flood Insurance Rate Map (FIRM) or after December
31, 1974, whichever is later, and includes any subsequent improvements
to such structures. For floodplain management purposes, "new
construction" means structures for which the "start of construction"
commenced on or after the effective date of the floodplain management
regulations adopted by a community and includes any subsequent improvements
to such structures.
NEW MANUFACTURED HOME PARK OR SUBDIVISION
A manufactured home park or subdivision for which the construction
of facilities for servicing the lot on which the manufactured homes
are to be affixed (including, at a minimum, the installation of utilities,
the construction of streets, and either final site grading or the
pouring of concrete pads) is completed on or after the effective date
of floodplain management regulations adopted by the community.
NFIP
The National Flood Insurance Program.
PERSON
Any individual or group of individuals, corporation, partnership,
association, or any other entity, including Federal, State and local
governments and agencies.
PRINCIPALLY ABOVE GROUND
That at least fifty-one percent (51%) of the actual cash
value of the structure, less land value, is above ground.
RECREATIONAL VEHICLE
A vehicle which is:
1.
Built on a single chassis;
2.
Four hundred (400) square feet or less when measured at the
largest horizontal projections;
3.
Designed to be self-propelled or permanently towable by a light-duty
truck; and
4.
Designed primarily not for use as a permanent dwelling but as
temporary living quarters for recreational, camping, travel or seasonal
use.
REMEDY A VIOLATION
To bring the structure or other development into compliance
with Federal, State or local floodplain management regulations or,
if this is not possible, to reduce the impacts of its non-compliance.
REPETITIVE LOSS
Flood-related damages sustained by a structure on two (2)
separate occasions during a ten (10) year period for which the cost
of repairs at the time of each such flood event equals or exceeds
twenty-five percent (25%) of the market value of the structure before
the damage occurred.
RISK PREMIUM RATES
Those rates established by the Federal Insurance Administrator
pursuant to individual community studies and investigations which
are undertaken to provide flood insurance in accordance with Section
1307 of the National Flood Disaster Protection Act of 1973 and the
accepted actuarial principles. "Risk premium rates" include provisions for operating costs and allowances.
SPECIAL HAZARD AREA
An area having special flood hazards and shown on a Flood
Hazard Boundary Map (FHBM), Flood Insurance Rate Map (FIRM) or Flood
Boundary and Floodway Map (FBFM) as Zones (unnumbered or numbered)
A and AE.
START OF CONSTRUCTION
Includes substantial improvements and means the date the
building permit was issued, provided the actual start of construction,
repair, reconstruction, rehabilitation, addition placement, or other
improvements were within one hundred eighty (180) days of the permit
date. The "actual start" means either the first (1st)
placement of permanent construction of a structure on a site, such
as the pouring of slabs or footings, the installation of piles, the
construction of columns, any work beyond the stage of excavation,
or the placement of a manufactured home on a foundation. Permanent
construction does not include land preparation, such as clearing,
grading and filling, the installation of streets and/or walkways,
excavation of a basement, footings, piers, foundations, the erection
of temporary forms, nor installation on the property of accessory
structures, such as garages or sheds not occupied as dwelling units
or not part of the main structure. For a substantial improvement,
the "actual start of construction" means the first
(1st) alteration of any wall, ceiling, floor, or other structural
part of a building, whether or not that alteration affects the external
dimensions of the building.
STATE COORDINATING AGENCY
That agency of the State Government or other office designated
by the Governor of the State or by State Statute at the request of
the Federal Insurance Administrator to assist in the implementation
of the National Flood Insurance Program (NFIP) in that State. In Missouri,
it is the State Emergency Management Agency.
STRUCTURE
For floodplain management purposes, a walled and roofed building,
including a gas or liquid storage tank, that is principally above
ground, as well as a manufactured home. "Structure", for insurance purposes, means a walled and roofed building, other
than a gas or liquid storage tank, that is principally above ground
and affixed to a permanent site, as well as a manufactured home on
a permanent foundation. For the latter purpose, the term includes
a building while in the course of construction, alteration or repair
but does not include building materials or supplies intended for use
in such construction, alteration or repair, unless such materials
or supplies are within an enclosed building on the premises.
SUBSTANTIAL DAMAGE
Damage of any origin sustained by a structure whereby the
cost of restoring the structure to its before damaged condition would
equal or exceed fifty percent (50%) of the market value of the structure
before the damage occurred. The term includes "repetitive loss" buildings.
For the purposes of this definition, "repair" is
considered to occur when the first (1st) repair or reconstruction
of any wall, ceiling, floor or other structural part of the building
commences. The term does not apply to:
1.
Any project for improvement of a building required to comply
with existing health, sanitary or safety code specifications which
have been identified by the Code Enforcement Official and which are
solely necessary to assure safe living conditions; or
2.
Any alteration of a "historic structure" provided that the alteration
will not preclude the structure's continued designation as a
"historic structure"; or
3.
Any improvement to a building.
SUBSTANTIAL IMPROVEMENT
Any combination of reconstruction, alteration or improvement
to a building, taking place during the life of the building, in which
the cumulative percentage of improvement equals or exceeds fifty percent
(50%) of the current market value of the building. For the purposes
of this definition, an improvement occurs when the first (1st) alteration
of any wall, ceiling, floor or other structural part of the building
commences, whether or not that alteration affects the external dimensions
of the building. This term includes structures which have incurred
"repetitive loss" or "substantial damage", regardless of the actual
repair work done. The term does not apply to:
1.
Any project for improvement of a building required to comply
with existing health, sanitary, or safety code specifications which
have been identified by the Code Enforcement Official and which are
solely necessary to assure safe living conditions; or
2.
Any alteration of a "historic structure" provided that the alteration
will not preclude the structure's continued designation as a
"historic structure"; or
3.
Any building that has been damaged from any source or is categorized
as "repetitive loss".
VARIANCE
A grant of relief by the Board of Adjustment from the terms
of a floodplain management regulation. Flood insurance requirements
remain in place for any varied use or structure and cannot be varied
by the Board of Adjustment.
VIOLATION
The failure of a structure or other development to be fully
compliant with the community's floodplain management regulations.
A structure or other development without the elevation certificate,
other certifications, or other evidence of compliance required by
this Chapter is presumed to be in violation until such time at that
documentation is provided.
WATER SURFACE ELEVATION
The height in relation to the National Geodetic Vertical
Datum (NGVD) of 1929 (or other datum where specified) of floods of
various magnitudes and frequencies in the floodplain.
[Ord. No. 2131 § 1, 1-15-2001; Ord. No. 2397 § 2, 2-21-2006; Ord.
No. 2634 § 1, 2-22-2011]
A. Chapter 79, RSMo., including Section 79.110, authorizes Fourth Class
Cities of the State of Missouri to adopt floodplain management regulations
designed to protect the health, safety and general welfare.
B. The Flood Insurance Study (FIS) that is the basis of this Chapter
uses a standard engineering method of analyzing flood hazards which
consist of a series of interrelated steps.
1. Selection of a base flood that is based upon engineering calculations
which permit a consideration of such flood factors as its expected
frequency of occurrence, the area inundated, and the depth of inundation.
The base flood selected for this Chapter is representative of large
floods which are characteristic of what can be expected to occur on
the particular streams subject to this Chapter. It is in the general
order of a flood which could be expected to have a one-percent chance
of occurrence in any one (1) year as delineated on the Federal Insurance
Administrator's FIS, and illustrative materials for Boone County,
Missouri, dated April 19, 2017, as amended, and any future revisions
thereto.
[Ord. No. 2885 § 1, 3-6-2017]
2. Calculation of water surface profiles are based on a standard hydraulic
engineering analysis of the capacity of the stream channel and overbank
areas to convey the regulatory flood.
C. It is the purpose of this Chapter to promote the public health, safety
and general welfare; to minimize flood losses; to establish or maintain
the community's eligibility for participation in the National
Flood Insurance Program (NFIP) as defined in 44 Code of Federal Regulations
(CFR) 59.22 (a) (3); and to meet the requirements of 44 CFR 60.3 (c)
by applying the provisions of this Chapter to:
1. Restrict or prohibit uses that are dangerous to health, safety or
property in times of flooding or cause undue increases in flood heights
or velocities;
2. Require uses vulnerable to floods, including public facilities that
serve such uses, be provided with flood protection at the time of
initial construction; and
3. Protect individuals from buying lands that are unsuited for the intended
development purposes due to the flood hazard.
D. It is not intended by this Chapter to repeal, abrogate or impair
any existing easement, covenants or deed restrictions. However, where
this Chapter imposes greater restrictions, the provisions of this
Chapter shall prevail. All other ordinances inconsistent with this
Chapter are hereby repealed to the extent of the inconsistency only.
E. In their interpretation and application, the provisions of this Chapter
shall be held to be minimum requirements, shall be liberally construed
in favor of the City of Centralia, Missouri, and shall not be deemed
a limitation or repeal of any other powers granted by State Statutes.
[Ord. No. 2131 § 1, 1-15-2001; Ord. No. 2397 § 3, 2-21-2006; Ord.
No. 2634 § 1, 2-22-2011]
The City Administrator is hereby designated as the Floodplain
Administrator and is hereby authorized and directed to administer,
implement and enforce the provisions of this Chapter along with all
other ordinances of the City of Centralia, Missouri, now in force
or hereafter adopted, relating to zoning, subdivision or building
codes. Duties of the City Administrator shall include, but not be
limited to, the following:
1. Review of all applications for floodplain development permits for
proposed development to assure that sites are reasonably safe from
flooding and that the floodplain development permit requirements of
this Chapter have been satisfied;
2. Review of all applications for floodplain development permits for
proposed development to assure that all necessary permits have been
obtained from Federal, State or local government agencies from which
prior approval is required by Federal, State or local law;
3. Review all subdivision proposals and other proposed new development,
including manufactured home parks or subdivisions, to determine whether
such proposals will be reasonably safe from flooding;
4. Issuance of floodplain development permits for all approved applications;
5. Notification of adjacent communities and the State Emergency Management
Agency prior to any alteration or relocation of a watercourse and
submit evidence of such notification to the Federal Emergency Management
Agency (FEMA);
6. Assure that the flood-carrying capacity is not diminished and shall
be maintained within the altered or relocated portion of any watercourse;
7. Verify and maintain a record of the actual elevation (in relation
to mean sea level) of the lowest floor (including basement) of all
new or substantially improved structures;
8. Verify and maintain a record of the actual elevation (in relation
to mean sea level) that the new or substantially improved nonresidential
structures have been floodproofed; and
9. When floodproofing techniques are utilized for a particular nonresidential
structure, the City Administrator shall require certification from
a registered professional engineer or architect.
[Ord. No. 2131 § 1, 1-15-2001; Ord. No. 2397 § 4, 2-21-2006; Ord.
No. 2634 § 1, 2-22-2011]
this Chapter shall apply to all lands within the jurisdiction of the City of Centralia identified as (unnumbered or numbered) A Zones and AE Zones on the Flood Insurance Rate Map (FIRM) for Boone County dated March 17, 2011 on map panels 29019C0075D and 29019C0100D, as amended, and any future revisions thereto. In all areas covered by this Chapter, no development shall be permitted except through the issuance of a floodplain development permit granted by the City Administrator or his duly designated representative under such safeguards and restrictions as the City Administrator or his duly designated representative may reasonably impose for the promotion and maintenance of the general welfare, health of the inhabitants of the community and as specifically noted in Section
12-6. No development located within the special flood hazard areas of this community shall be located, extended, converted or structurally altered without full compliance with the terms of this Chapter and other applicable regulations.
[Ord. No. 2131 § 1, 1-15-2001; Ord. No. 2634 § 1, 2-22-2011]
A. A floodplain development permit shall be required for all proposed construction or other development, including the placement of manufactured homes, in the areas described in Section
12-4. No person, firm, corporation or unit of government shall initiate any development or substantial improvement or cause the same to be done without first obtaining a separate floodplain development permit for each structure or other development.
B. To obtain a floodplain development permit, the applicant shall first
file an application in writing on a form furnished for that purpose.
Every floodplain development permit application shall:
1. Describe the land on which the proposed work is to be done by lot,
block and tract, house and street address, or similar description
that will readily identify and specifically locate the proposed structure
or work;
2. Identify and describe the work to be covered by the floodplain development
permit;
3. Indicate the use or occupancy for which the proposed work is intended;
4. Indicate the assessed value of the structure and the fair market
value of the improvement;
5. Identify the existing base flood elevation and the elevation of the
proposed development;
6. Give such other information as reasonably may be required by the
City Administrator;
7. Be accompanied by plans and specifications of proposed construction;
and
8. Be signed by the permittee or the permittee's authorized agent
who may be required to submit evidence to indicate such authority.
[Ord. No. 2131 § 1, 1-15-2001; Ord. No. 2397 §§ 5
— 9, 2-21-2006; Ord. No. 2634 § 1, 2-22-2011]
A. General Standards.
1. No permit for floodplain development shall be granted for new construction,
substantial improvements and other improvements, including the placement
of manufactured homes within any unnumbered or numbered A Zones and
AE Zones, unless the conditions of this Section are satisfied.
2. All areas identified as unnumbered A Zones on the FIRM are subject
to inundation of the 100-year flood; however, the base flood elevation
is not provided. Development within unnumbered A Zones is subject
to all provisions of this Chapter. If Flood Insurance Study data is
not available, the community shall obtain, review and reasonably utilize
any base flood elevation or floodway data currently available from
Federal, State or other sources.
3. Until a floodway is designated, no new construction, substantial
improvements or other development, including fill, shall be permitted
within any numbered A Zone or AE Zone on the FIRM, unless it is demonstrated
that the cumulative effect of the proposed development, when combined
with all other existing and anticipated developments, will not increase
the water surface elevation of the base flood more than one (1) foot
at any point within the community.
4. All new construction, subdivision proposals, substantial improvements,
prefabricated buildings, placement of manufactured homes, and other
development shall require:
a. Design or adequate anchorage to prevent flotation, collapse or lateral
movement of the structure resulting from hydrodynamic and hydrostatic
loads, including the effects of buoyancy;
b. Construction with materials resistant to flood damage;
c. Utilization of methods and practices that minimize flood damages;
d. All electrical, heating, ventilation, plumbing, air conditioning
equipment, and other service facilities be designed and/or located
so as to prevent water from entering or accumulating within the components
during conditions of flooding;
e. New or replacement water supply systems and/or sanitary sewage systems
be designed to minimize or eliminate infiltration of floodwaters into
the systems and discharges from the systems into floodwaters, and
on-site waste disposal systems be located so as to avoid impairment
or contamination; and
f. Subdivision proposals and other proposed new development, including
manufactured home parks or subdivisions, located within special flood
hazard areas are required to assure that:
(i)
All such proposals are consistent with the need to minimize
flood damages;
(ii)
All public utilities and facilities, such as sewer, gas, electrical
and water systems, are located and constructed to minimize or eliminate
flood damage;
(iii)
Adequate drainage is provided so as to reduce exposure to flood
hazards; and
(iv)
All proposals for development, including proposals for manufactured
home parks and subdivisions, greater than five (5) acres or fifty
(50) lots, whichever is lesser, include within such proposals the
base flood elevation data.
5. Agricultural structures. Structures used solely
for agricultural purposes in connection with the production, harvesting,
storage, drying or raising of agricultural commodities including the
raising of livestock may be constructed at grade and wet-floodproofed
provided there is no human habitation or occupancy of the structure;
the structure is of single-wall design; there is no permanent retail,
wholesale, or manufacturing use included in the structure; a variance
has been granted from the floodplain management requirements of this
Chapter; and a floodplain development permit has been issued.
6. Storage, material and equipment.
a. The storage or processing of materials within the special flood hazard
area that are in time of flooding buoyant, flammable, explosive, or
could be injurious to human, animal or plant life is prohibited.
b. Storage of other material or equipment may be allowed if not subject
to major damage by floods, if firmly anchored to prevent flotation,
or if readily removable from the area within the time available after
a flood warning.
7. Accessory structures. Structures used solely for
parking and limited storage purposes, not attached to any other structure
on the site, of limited investment value, and not larger than four
hundred (400) square feet may be constructed at grade and wet-floodproofed
provided there is no human habitation or occupancy of the structure;
the structure is of single-wall design; a variance has been granted
from the standard floodplain management requirement of this Chapter;
and a floodplain development permit has been issued.
B. Specific Standards.
1. In all areas identified as unnumbered and numbered A Zones and AE
Zones, where base flood elevation data has been provided, as set forth
in Subsection (A)(2) of this Section, the following provisions are
required:
a. Residential construction. New construction or substantial
improvement of any residential structure, including manufactured homes,
shall have the lowest floor, including basement, elevated to one (1)
foot above base flood level.
b. Nonresidential construction. New construction or substantial improvement of any commercial, industrial, or other nonresidential structure, including manufactured homes, shall have the lowest floor, including basement, elevated to one (1) foot above the base flood level or, together with attendant utility and sanitary facilities, be floodproofed so that below the base flood level the structure is water-tight with walls substantially impermeable to the passage of water and with structural components having the capability of resisting hydrostatic and hydrodynamic loads and effects of buoyancy. A registered professional engineer or architect shall certify that the standards of the Subsection are satisfied. Such certification shall be provided to the City Administrator as set forth in Subsection
(9) of Section
12-3.
c. Require, for all new construction and substantial improvements, that
fully enclosed areas below lowest floor used solely for parking of
vehicles, building access, or storage in an area other than a basement
and that are subject to flooding shall be designed to automatically
equalize hydrostatic flood forces on exterior walls by allowing for
the entry and exit of floodwaters. Designs for meeting this requirement
must either be certified by a registered professional engineer or
architect or meet or exceed the following minimum criteria:
(i)
A minimum of two (2) openings having a total net area of not
less than one (1) square inch for every square foot of enclosed area
subject to flooding shall be provided; and
(ii)
The bottom of all opening shall be no higher than one (1) foot
above grade. Openings may be equipped with screens, louvers, valves,
or other coverings or devices provided that they permit the automatic
entry and exit of floodwaters.
C. Manufactured Homes.
1. All manufactured homes to be placed within all unnumbered and numbered
A and AE Zones on the Flood Insurance Rate Map (FIRM) shall be required
to be installed using methods and practices that minimize flood damage.
For the purposes of this requirement, manufactured homes must be elevated
and anchored to resist flotation, collapse or lateral movement. Methods
of anchoring may include, but are not limited to, use of over-the-top
or frame ties to ground anchors.
2. Manufactured homes that are placed or substantially improved within
unnumbered and numbered A Zones and AE Zones on the community's
FIRM on sites:
a. Outside of a manufactured home park or subdivision; or
b. In a new manufactured home park or subdivision; or
c. In an expansion to an existing manufactured home park or subdivision;
or
d. In an existing manufactured home park or subdivision on which a manufactured
home has incurred "substantial damage" as the result of a flood
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are required to be elevated on a permanent foundation such that
the lowest floor of the manufactured home is elevated to one (1) foot
above the base flood level and be securely attached to any adequately
anchored foundation system to resist floatation, collapse and lateral
movement.
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3. Manufactured homes required to be placed or substantially improved
on sites in an existing manufactured home park or subdivision within
unnumbered and numbered A Zones and AE Zones on the Flood Insurance
Rate Map (FIRM), that are not subject to the provisions of paragraph
(2) of this Subsection (C) of this Section, shall be elevated so that
either:
a. The lowest floor of the manufactured home is at least one (1) foot
above the base flood level; or
b. The manufactured home chassis is supported by reinforced piers or
other foundation elements of at least equivalent strength that are
no less than thirty-six (36) inches in height above grade and be securely
attached to an adequately anchored foundation system to resist floatation,
collapse and lateral movement.
D. Floodway. If the City determines there are areas of special flood hazard that may be defined as floodway, through the use of base flood elevation and floodway data available from a Federal, State or other source, including data developed pursuant to paragraph (4)(f)(iv) of Subsection (A) of Section
12-6 and the City determines this data is suitable as criteria to be used for new construction, substantial improvements or other development in Zone A, the City then shall meet the standards below:
1. Adopt a regulatory floodway based on the principle that the area
chosen for the regulatory floodway must be designed to carry the waters
of the base flood without increasing the water surface elevation of
that flood more than one (1) foot at any point; and
2. Prohibit encroachments, including fill, new construction, substantial
improvements and other development, within the adopted regulatory
floodway unless it has been demonstrated through hydrologic and hydraulic
analyses performed in accordance with standard engineering practice
that the proposed encroachment would not result in any increase in
flood levels within the community during the occurrence of the base
flood discharge.
E. Recreational Vehicles. Recreational vehicles placed
on sites within all unnumbered and numbered A Zones and AE Zones on
the community's FIRM are required to either:
1. Be on the site for fewer than one hundred eighty (180) consecutive
days, or
2. Be fully licensed and ready for highway use, or
3. Meet the permitting, elevating and anchoring requirements for manufactured
homes of this Chapter.
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A recreational vehicle is ready for highway use if it is on
its wheels or jacking system, is attached to the site only by quick
disconnect type utilities and security devices and has no permanently
attached additions.
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[Ord. No. 2131 § 1, 1-15-2001; Ord. No. 2634 § 1, 2-22-2011]
A. Board Of Adjustment Authorized To Hear Variance Requests
And Appeals. The Board of Adjustment as established in Chapter
31 of the Centralia City Code shall hear and decide appeals and requests for variances from the floodplain management requirements of this Chapter. Where an application for a floodplain development permit or request for a variance from the floodplain management regulations is denied by the City Administrator, the applicant may apply for such floodplain development permit or variance directly to the Board of Adjustment. The Board of Adjustment shall hear and decide appeals when it is alleged that there is an error in any requirement, decision or determination made by the City Administrator in the enforcement or administration of this Chapter.
B. Further Appeals. Any person aggrieved by a decision of the Board of Adjustment or any taxpayer, officer, department or board of the City may appeal such decision to the Circuit Court as provided in Section
31-64.
C. Floodplain Management Variance Criteria. In passing
upon such applications for variances, the Board of Adjustment shall
consider all technical data and evaluations, all relevant factors,
standards specified in other Sections of this Chapter, and the following
criteria:
1. The danger to life and property due to flood damage;
2. The danger that materials may be swept onto other lands to the injury
of others;
3. The susceptibility of the proposed facility and its contents to flood
damage and the effect of such damage on the individual owners;
4. The importance of the services provided by the proposed facility
to the community;
5. The necessity to the facility of a waterfront location, where applicable;
6. The availability of alternative locations, not subject to flood damage,
for the proposed use;
7. The compatibility of the proposed use with existing and anticipated
development;
8. The relationship of the proposed use to the Comprehensive Plan and
floodplain management program for that area;
9. The safety of access to the property in time of flood for ordinary
and emergency vehicles;
10. The expected heights, velocity, duration, rate of rise and sediment
transport of the floodwaters, if applicable, expected at the site;
and
11. The costs of providing governmental services during and after flood
conditions including maintenance and repair of public utilities and
facilities such as sewer, gas, electrical and water systems; streets;
and bridges.
D. Conditions For Approving Floodplain Management Variances.
1. Generally, variances may be issued for new construction and substantial
improvements to be erected on a lot of one-half (1 1/2) acre
or less in size contiguous to and surrounded by lots with existing
structures constructed below the base flood level, providing items
(2) through (6) below have been fully considered. As the lot size
increases beyond the one-half (1/2) acre, the technical justification
required for issuing the variance increases.
2. Variances may be issued for the reconstruction, rehabilitation or
restoration of structures listed on the National Register of Historic
Places, the State Inventory of Historic Places or local inventory
of historic places upon determination provided that the proposed activity
will not preclude the structure's continued historic designation.
3. Variances shall not be issued within any designated floodway if any
increase in flood levels during the base flood discharge would result.
4. Variances shall only be issued upon a determination that the variance
is the minimum necessary, considering the flood hazard, to afford
relief.
5. Variances shall only be issued upon:
a. A showing of good and sufficient cause,
b. A determination that failure to grant the variance would result in
exceptional hardship to the applicant, and
c. A determination that the granting of a variance will not result in
increased flood heights, additional threats to public safety, extraordinary
public expense, create nuisances, cause fraud on or victimization
of the public, nor conflict with existing local laws or ordinances.
6. A community shall notify the applicant in writing over the signature
of the City Administrator that:
a. The issuance of a variance to construct a structure below base flood
level will result in increased premium rates for flood insurance up
to amounts as high as twenty-five dollars ($25.00) for one hundred
dollars ($100.00) of insurance coverage, and
b. Such construction below the base flood level increases risk to life
and property. Such notification shall be maintained with the record
of all variance actions as required by this Chapter.
E. Conditions For Approving Variances For Agricultural Structures. Any variance granted for an agricultural structure shall be decided individually based on a case-by-case analysis of the building's unique circumstances. Variances granted shall meet the following conditions as well as those criteria and conditions set forth in Subsections (C) and (D) of Section
12-7.
In order to minimize flood damages during the 100-year flood
and the threat to public health and safety, the following conditions
shall be included for any variance issued for agricultural structures
that are constructed at-grade and wet-floodproofed.
1. All agricultural structures considered for a variance from the floodplain
management regulations of this Chapter shall demonstrate that the
varied structure is located in wide, expansive floodplain areas and
no other alternate location outside of the special flood hazard area
exists for the agricultural structure. Residential structures, such
as farmhouses, cannot be considered agricultural structures.
2. Use of the varied structures must be limited to agricultural purposes
in Zone A only as identified on the community's Flood Insurance
Rate Map (FIRM).
3. For any new or substantially damaged agricultural structures, the exterior and interior building components and elements (i.e., foundation, wall framing, exterior and interior finishes, flooring, etc.) below the base flood elevation must be built with flood-resistant materials in accordance with paragraph (4)(b) of Subsection (A) of Section
12-6.
4. The agricultural structures must be adequately anchored to prevent flotation, collapse, or lateral movement of the structures in accordance with paragraph (4)(a) of Subsection (A) of Section
12-6. All of the building's structural components must be capable of resisting specific flood-related forces including hydrostatic, buoyancy, and hydrodynamic and debris impact forces.
5. Any mechanical, electrical, or other utility equipment must be located above the base flood elevation or floodproofed so that they are contained within a water-tight, floodproofed enclosure that is capable of resisting damage during flood conditions in accordance with paragraph (4)(d) of Subsection (A) of Section
12-6.
6. The agricultural structures must meet all National Flood Insurance Program (NFIP) opening requirements. The NFIP requires that enclosure or foundation walls, subject to the 100-year flood, contain openings that will permit the automatic entry and exit of floodwaters in accordance with paragraph (1)(c) of Subsection (B) of Section
12-6.
7. The agricultural structures must comply with the floodplain management floodway encroachment provisions of Subsection (D) of Section
12-6. No variances may be issued for agricultural structures within any designated floodway, if any increase in flood levels would result during the 100-year flood.
8. Major equipment, machinery, or other contents must be protected from
any flood damage.
9. No disaster relief assistance under any program administered by any
Federal agency shall be paid for any repair or restoration costs of
the agricultural structures.
10. A community shall notify the applicant in writing over the signature
of the City Administrator that:
a. The issuance of a variance to, construct a structure below base flood
level will result in increased premium rates for flood insurance up
to amounts as high as twenty-five dollars ($25.00) for one hundred
dollars ($100.00) of insurance coverage; and
b. Such construction below the base flood level increases risks to life
and property. Such notification shall be maintained with the record
of all variance actions as required by this Chapter.
11. Wet-floodproofing construction techniques must be reviewed and approved
by the community and a registered professional engineer or architect
prior to the issuance of any floodplain development permit for construction.
F. Conditions For Approving Variances For Accessory Structures. Any variance granted for an accessory structure shall be decided
individually based on a case-by-case analysis of the building's
unique circumstances. Variances granted shall meet the following conditions
as well as those criteria and conditions set forth in Subsections
(C) and (D) of this Section.
In order to minimize flood damages during the 100-year flood
and the threat to public health and safety, the following conditions
shall be included for any variance issued for accessory structures
that are constructed at-grade and wet-floodproofed:
1. Use of the accessory structures must be solely for parking and limited
storage purposes in Zone A only as identified on the community's
Flood Insurance Rate Map (FIRM).
2. For any new or substantially damaged accessory structures, the exterior and interior building components and elements (i.e., foundation, wall framing, exterior and interior finishes, flooring, etc.) below the base flood elevation must be built with flood-resistant materials in accordance with paragraph (4)(b) of Subsection (A) of Section
12-6.
3. The accessory structures must be adequately anchored to prevent flotation, collapse or lateral movement of the structure in accordance with paragraph (4)(a) of Subsection (A) of Section
12-6. All of the building's structural components must be capable of resisting specific flood-related forces including hydrostatic, buoyancy, and hydrodynamic and debris impact forces.
4. Any mechanical, electrical, or other utility equipment must be located above the base flood elevation or floodproofed so that they are contained within a water-tight, floodproofed enclosure that is capable of resisting damage during flood conditions in accordance with paragraph (4)(d) of Subsection (A) of Section
12-6.
5. The accessory structures must meet all National Flood Insurance Program (NFIP) opening requirements. The NFIP requires that enclosure or foundation walls, subject to the 100-year flood, contain openings that will permit the automatic entry and exit of floodwaters in accordance with paragraph (1)(c) of Subsection (B) of Section
12-6.
6. The accessory structures must comply with the floodplain management floodway encroachment provisions of Subsection (D) of Section
12-6. No variance may be issued for accessory structures within any designated floodway if any increase in flood levels would result during the 100-year flood.
7. Equipment, machinery or other contents must be protected from any
flood damage.
8. No disaster relief assistance under any program administered by any
Federal agency shall be paid for any repair or restoration costs of
the accessory structures.
9. A community shall notify the applicant in writing over the signature
of the City Administrator that:
a. The issuance of a variance to construct a structure below base flood
level will result in increased premium rates for flood insurance up
to amounts as high as twenty-five dollars ($25.00) for one hundred
dollars ($100.00) of insurance coverage; and
b. Such construction below the base flood level increases risks to life
and property.
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Such notification shall be maintained with the record of all
variance actions as required by this Chapter.
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10. Wet-floodproofing construction techniques must be reviewed and approved
by the community and a registered professional engineer or architect
prior to the issuance of any floodplain development permit for construction.
[Ord. No. 2131 § 1, 1-15-2001; Ord. No. 2634 § 1, 2-22-2011]
Violations of the provisions of this Chapter or failure to comply
with any of its requirements (including violations of conditions and
safeguards established in connection with granting of variances) shall
constitute a misdemeanor. Any person who violates the Chapter or fails
to comply with any of its requirements shall, upon conviction thereof,
be fined an amount not exceeding five hundred dollars ($500.00) and,
in addition, shall pay all costs and expenses involved in the case.
Each day such violation continues shall be considered a separate offense.
Nothing herein contained shall prevent the City of Centralia, Missouri,
or other appropriate authority from taking such other lawful action
as is necessary to prevent or remedy any violation.
[Ord. No. 2131 § 1, 1-15-2001; Ord. No. 2634 § 1, 2-22-2011]
The degree of flood protection required by this Chapter is considered
reasonable for regulatory purposes and is based on engineering and
scientific methods of study. Larger floods may occur on rare occasions
or the flood heights may be increased by man-made or natural causes,
such as ice jams and bridge openings restricted by debris. this Chapter
does not imply that areas outside the floodplain or land uses permitted
within such areas will be free from flooding or flood damage. this
Chapter shall not create a liability on the part of the City of Centralia,
Missouri, or any officer or employee thereof for any flood damages
that may result from reliance on this Chapter or any administrative
decision lawfully made thereunder.
[Ord. No. 2131 § 1, 1-15-2001; Ord. No. 2634 § 1, 2-22-2011]
If any Section, clause, provision or portion of this Chapter
is adjudged unconstitutional or invalid by a court of appropriate
jurisdiction, the remainder of this Chapter shall not be affected
thereby.
[Ord. No. 2131 § 1, 1-15-2001; Ord. No. 2634 § 1, 2-22-2011]
The provisions set forth in this Chapter may from time to time
be amended to reflect any and all changes in the National Flood Disaster
Protection Act of 1973. No such amendment action may be taken until
after a public hearing in relation thereto, at which parties of interest
and citizens shall have an opportunity to be heard. Notice of the
time and place of such hearing shall be published in a newspaper of
general circulation in the City. At least twenty (20) days shall elapse
between the date of this publication and the public hearing. A copy
of such amendments shall be provided to the Region VII office of the
Federal Emergency Management Agency (FEMA). The provisions of this
Chapter are in compliance with the National Flood Insurance Program
(NFIP) regulations as published in Title 44 of the Code of Federal
Regulations.