[R.O. 1992 § 415.160; Ord. No.
2409-11 § 1, 6-21-2011]
A.
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 A Zones and AE Zones unless
the conditions of this Section are satisfied.
B.
All areas identified as unnumbered A Zones on the FIRM are subject
to inundation of the one-hundred-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. A base flood elevation of six
hundred sixty-five point two (665.2) feet above mean sea level shall
apply to all properties adjacent to the Lake of the Ozarks.
[Ord. No. 2686-18, 1-16-2018]
C.
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 development, will not increase
the water surface elevation of the base flood more than one (1) foot
at any point within the community.
D.
All new construction, subdivision proposals, substantial improvements,
prefabricated buildings, placement of manufactured homes, and other
developments shall require:
1.
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;
2.
Construction with materials resistant to flood damages;
3.
Utilize methods and practices that minimize flood damages;
4.
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;
5.
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
6.
Subdivision proposals and other proposed development, including
manufactured home parks or subdivisions, located within special flood
hazard areas are required to assure that:
a.
All such proposals are consistent with the need to minimize
flood damage;
b.
All public utilities and facilities, such as sewer, gas, electrical,
and water systems are located and constructed to minimize or eliminate
flood damage;
c.
Adequate drainage is provided so as to reduce exposure to flood
hazards; and
d.
All proposals for development (including proposals for manufactured
home parks and subdivisions) of five (5) acres or fifty (50) lots,
whichever is lesser, include within such proposals base flood elevation
data.
E.
Storage, Material And Equipment.
1.
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.
2.
Storage of other material or equipment may be allowed if not
subject to major damage by floods, firmly anchored to prevent flotation,
or if readily removable from the area within the time available after
a flood warning.
F.
Hazardous Materials. All hazardous material storage and handling
sites shall be located out of the special flood hazard area.
G.
Accessory Structures. Structures that are used solely for parking
and limited storage purposes, of limited investment value, and are
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
requirements of this Chapter; and a floodplain development permit
has been issued.
[R.O. 1992 § 415.170; Ord. No.
2409-11 § 1, 6-21-2011]
A.
In all areas identified as numbered and unnumbered A zones and AE zones, where base flood elevation data has been provided, as set forth in Article V, Section 415.160(B), the following provisions are required:
[Ord. No. 2686-18, 1-16-2018]
1.
Residential Construction. New construction or substantial improvement
of any residential building, including manufactured homes, shall have
the lowest floor, including basement, elevated to one (1) foot above
base flood elevation.
2.
Non-Residential Construction. New construction or substantial improvement of any commercial, industrial or other non-residential building, including manufactured homes, shall have the lowest floor, including basement, elevated to or one (1) foot above the base flood elevations or, together with attendant utility and sanitary facilities, be floodproofed so that below the base flood level the structure is watertight 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 this Subsection are satisfied. Such certification shall be provided to the Floodplain Administrator as set forth in Article IV, Section 415.140(A)(9).
3.
Require, for all new construction and substantial improvements,
that fully enclosed areas below the lowest floor that are usable solely
for parking 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:
a.
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
b.
The bottom of all openings 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.
B.
In all areas of special flood hazard, once floodway data is obtained as set forth in Section 415.160(B), the following provisions are required:
1.
The designated floodway shall be based on the standard that
the area chosen for the floodway must be designed to carry the waters
of the base flood without increasing the water surface elevation more
than one (1) foot at any time; and
2.
The community shall prohibit any encroachments, including fill,
new construction, substantial improvements, and other development,
within the designated 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.
[R.O. 1992 § 415.180; Ord. No.
2409-11 § 1, 6-21-2011]
A.
All manufactured homes to be placed within all unnumbered and numbered
A Zones and AE Zones on the community's 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.
B.
Manufactured homes that are placed or substantially improved within
unnumbered or numbered A Zones and AE Zones on the community's
FIRM sites outside of a manufactured home park or subdivision, in
a new manufactured home park or subdivision, in an expansion to an
existing manufactured home park or subdivision, or in an existing
manufactured home park or subdivision on which a manufactured home
has incurred "substantial damage" as the result of a flood, shall
be elevated on a permanent foundation such that the lowest floor of
the manufactured home is elevated to or one (1) foot above the base
flood elevation and be securely attached to an adequately anchored
foundation system to resist flotation, collapse, and lateral movement.
[Ord. No. 2686-18, 1-16-2018]
C.
Require that manufactured homes to be placed or substantially improved on sites in an existing manufactured home park or subdivision within numbered and unnumbered A Zones and AE Zones on the community's FIRM, that are not subject to the provisions of Subsection (B) of this Section, be elevated so that either:
1.
The lowest floor of the manufactured home is at or one (1) foot
above the base flood elevation; or
2.
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 flotation, collapse, and lateral movement.
[R.O. 1992 § 415.190; Ord. No.
2409-11 § 1, 6-21-2011]
A.
Require that recreational vehicles placed on sites within all unnumbered
and numbered A Zones and AE Zones on the community's FIRM either:
1.
Be on site for fewer than one hundred eighty (180) consecutive
days, and be fully licensed and ready for highway use*; or
2.
Be fully licensed and ready for highway use; or
[Ord. No. 2686-18, 1-16-2018]
3.
Meet the permitting, elevating and the anchoring requirements
for manufactured homes of this Chapter.
|
*
|
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.
|
[R.O. 1992 § 415.200; Ord. No.
2409-11 § 1, 6-21-2011]
A.
If a community determines there are areas of special flood hazard that may be defined as floodway, through the use of base flood elevations and floodway data available from a Federal, State, or other source, including data developed pursuant to Article III, Section 415.050, and determines this data is suitable as criteria for requiring that new construction, substantial improvements, or other development in Zone A, the community must meet the standards below:
[Ord. No. 2686-18, 1-16-2018]
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 the flood more than one (1) foot at any point.
2.
Prohibit encroachment, 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 the 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.
3.
If Article V, Section 415.200(A)(2) is satisfied, all new construction and substantial improvements shall comply with all applicable flood hazard reduction provisions of Article V.
[Ord. No. 2686-18, 1-16-2018]
4.
In unnumbered A zones, the community shall obtain, review, and reasonably utilize any base flood elevation or floodway data currently available from Federal, State, or other sources as set forth in Article V, Section 415.160(B).
[Ord. No. 2686-18, 1-16-2018]
[R.O. 1992 § 415.210; Ord. No.
2409-11 § 1, 6-21-2011]
AmerenUE-approved floating premises are exempt from the provisions
of this Chapter; however, all permanent improvements associated with
any floating premises shall comply with this Chapter.
