As used in this section, the following terms shall have the meanings
indicated:
AREA OF SHALLOW FLOODING
A designated Zone AO on a community's Flood Insurance Rate
Map with a one-percent annual chance or greater of flooding to an
average depth of one to three feet where a clearly defined channel
does not exist, where the path of flooding is unpredictable, and where
velocity flow may be evident. Such flooding is characterized by ponding
or sheet flow.
BASE FLOOD
The flood having a one-percent chance of being equaled or
exceeded in any given year; the base flood also is referred to as
the one-hundred-year flood (or the 1%-annual-chance flood).
BASE FLOOD DISCHARGE
The volume of water resulting from a base flood as it passes
a given location within a given time, usually expressed in cubic feet
per second (cfs).
BASE FLOOD ELEVATION
The water surface elevation of the base flood in relation
to the datum specified on the community's Flood Insurance Rate Map.
In areas of shallow flooding, the base flood elevation is the natural
grade elevation plus the depth number specified in feet on the Flood
Insurance Rate Map, or at least two feet if the depth number is not
specified.
DRY FLOODPROOFING
Any combination of structural and nonstructural additions,
changes, or adjustments to structures which reduce or eliminate flood
damage to real estate or improved real property, water and sanitary
facilities, structures and their contents.
ELEVATION CERTIFICATE
The National Flood Insurance Program elevation certificate
(FEMA Form 086-0-33), used to document building elevations and other
information about buildings. When required to be certified, the form
shall be completed by a licensed professional land surveyor.
ENCLOSURE BELOW THE LOWEST FLOOR
An unfinished or flood-resistant enclosure usable solely
for parking of vehicles, building access, or storage, in an area other
than a basement.
FEMA TECHNICAL BULLETIN
A series of guidance documents published by FEMA to provide
guidance concerning building performance standards of the National
Flood Insurance Program. See sections where specific technical bulletins
are identified.
FLOOD DAMAGE-RESISTANT MATERIALS
Any construction material capable of withstanding direct
and prolonged contact with floodwaters without sustaining any damage
that requires more than cosmetic repair. See FEMA Technical Bulletin
No. 2, Flood Damage-Resistant Materials Requirements, and FEMA Technical
Bulletin No. 8, Corrosion Protection for Metal Connectors in Coastal
Areas.
FLOOD INSURANCE RATE MAP (FIRM)
An official map on which the Federal Emergency Management
Agency has delineated special flood hazard areas to indicate the magnitude
and nature of flood hazards, and to designate applicable flood zones.
(a)
Zone A: special flood hazard areas inundated by the 1%-annual-chance
flood; base flood elevations are not determined.
(b)
Zone AE: special flood hazard areas subject to inundation by
the 1%-annual-chance flood; base flood elevations are determined;
floodways may or may not be determined.
(c)
Zone AO: areas of shallow flooding, with or without a designated
average flood depth.
(d)
Zone X (shaded): areas subject to inundation by the five-hundred-year
flood (0.2% annual chance); areas subject to the 1%-annual-chance
flood with average depths of less than one foot or with contributing
drainage area less than one square mile; and areas protected by levees
from the base flood.
(e)
Zone X (unshaded): areas determined to be outside the 1%-annual-chance
flood and outside the five-hundred-year floodplain.
(f)
Zone VE: special flood hazard areas subject to inundation by
the 1%-annual-chance flood and subject to high-velocity wave action
(also referred to as coastal high hazard areas).
(g)
Limit of Moderate Wave Action (LiMWA): the inland limit of the
area affected by waves greater than 1.5 feet during the base flood.
Base flood conditions between Zone VE and LiMWA will be similar to,
but less severe than, those in Zone VE.
FLOOD INSURANCE STUDY
The official report in which the Federal Emergency Management
Agency has provided flood profiles, floodway information, and the
water surface elevations.
FLOODPROOFING CERTIFICATE
The National Flood Insurance Program floodproofing certificate
for nonresidential structures (FEMA Form 86-0-34), used by registered
professional engineers and architects to certify dry floodproofing
designs.
FLOODWAY
The channel of a river or other watercourse and the adjacent
land areas that must be reserved in order to pass the base flood discharge
such that the cumulative increase in the water surface elevation of
the base flood discharge is no more than a designated height.
FREEBOARD
A factor of safety usually expressed in feet above a flood
elevation for the 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 wave action, obstructed bridge
openings, debris and ice jams, and the hydrologic effect of urbanization
in a watershed.
FUNCTIONALLY DEPENDENT USE
A use which cannot perform its intended purpose unless it
is located or carried out in close proximity to water; the term includes
only docking facilities, port facilities that are necessary for the
loading and unloading of cargo or passengers, and ship building and
ship repair facilities, 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.
HYDROLOGIC AND HYDRAULIC ENGINEERING ANALYSIS
An analysis performed by a professional engineer, licensed
in the State of Delaware, in accordance with standard engineering
practices as accepted by FEMA, used to determine the base flood, other-frequency
floods, flood elevations, floodway information and boundaries, and
flood profiles.
LETTER OF MAP CHANGE
An official FEMA determination, by letter, to amend or revise
an effective Flood Insurance Rate Map, Flood Boundary and Floodway
Map, and Flood Insurance Study. Letters of map change include:
(a)
Letter of Map Amendment (LOMA): an amendment based on technical
data showing that a property was inadvertently included in a designated
special flood hazard area. A LOMA amends the current effective Flood
Insurance Rate Map and establishes that a specific property is not
located in a special flood hazard area.
(b)
Letter of Map Revision (LOMR): a revision based on technical
data that may show changes to flood zones, flood elevations, floodplain
and floodway delineations, and planimetric features. One common type
of LOMR, a Letter of Map Revision Based on Fill (LOMR-F), is a determination
that a structure or parcel of land has been elevated by fill above
the base flood elevation and is, therefore, no longer exposed to flooding
associated with the base flood. In order to qualify for this determination,
the fill must have been permitted and placed in accordance with these
regulations.
(c)
Conditional Letter of Map Revision (CLOMR): a formal review
and comment as to whether a proposed flood protection project complies
with the minimum National Flood Insurance Program requirements for
such projects with respect to delineation of special flood hazard
areas. A CLOMR does not amend or revise effective Flood Insurance
Rate Maps, Flood Boundary and Floodway Maps, or Flood Insurance Studies.
Upon submission to and approval of certified as-built documentation,
a Letter of Map Revision may be issued.
LOWEST FLOOR
The lowest floor of the lowest enclosed area (including basement)
of a structure. This definition excludes an enclosure below the lowest
floor, which is an unfinished or flood-resistant enclosure usable
solely for parking of vehicles, building access or storage, in an
area other than a basement area, provided that such enclosure is built
in accordance with the applicable design requirements specified in
these regulations for enclosures below the lowest floor.
MANUFACTURED HOME
A structure, transportable in one or more sections, which
is built on a permanent chassis and is designed for use with or without
a permanent foundation when connected to the required utilities. The
term "manufactured home" does not include a recreational vehicle.
NEW CONSTRUCTION
Buildings and structures for which the start of construction
commenced on or after September 25, 1981, including any subsequent
improvements to such structures.
PERSON
An individual or group of individuals, corporation, partnership,
association, or any other entity, including state and local governments
and agencies.
SPECIAL FLOOD HAZARD AREA
The land in the floodplain subject to a one-percent or greater chance of flooding in any given year. Special flood hazard areas are designated by the Federal Emergency Management Agency in Flood Insurance Studies and on Flood Insurance Rate Maps as Zones A, AE, AO, and Zone VE. The term includes areas shown on other flood hazard maps that are specifically listed or otherwise described in Subsection
A(4).
START OF CONSTRUCTION
The date of issuance of permits for new construction and
substantial improvements, 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 of a structure
on a site, such as the pouring of slab or footings, the installation
of piles, the construction of columns, or 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; 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
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 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.
STRUCTURE or BUILDING
For floodplain management purposes only, a walled and roofed
building, including a gas or liquid storage tank, that is principally
above ground, as well as a manufactured home.
VIOLATION
For the purposes of this section, 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 in these regulations is presumed to be in violation
until such time that documentation is provided.