Special definitions. For the purpose of this district, the following
definitions shall apply:
BASE FLOOD ELEVATION
The expected whole foot water surface elevation of the base
one-hundred-year flood.
COMPLETELY DRY SPACE
A space which will remain totally dry during flooding; the
structure is designed and constructed to prevent the passage of water
and water vapor. (Reference is made to the Flood-Proofing Regulations,
Office of the Chief of Engineers, United States Army, EP 1165-2-314.)
DEVELOPMENT
Any man-made change to improved or unimproved real estate,
including but not limited to buildings or other structures, the placement
of mobile homes, streets and other paving, utilities, filling, grading,
excavation, mining, dredging, or drilling operations and the subdivision
of land.
ESSENTIALLY DRY SPACE
A space which will remain dry during flooding, except for
the passage of some water vapor or minor seepage; the structure is
substantially impermeable to the passage of water. (Reference is made
to the Flood-Proofing Regulations, Office of the Chief of Engineers,
United States Army, EP 1165-2-314.)
FLOOD or FLOODING
A general and temporary condition of partial or complete
inundation of normally dry land areas from the overflow of streams,
rivers, other inland waters or from the unusual and rapid accumulation
of runoff of surface water from any source.
FLOODPROOFING
(1)
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.
(2)
Where floodproofing is required, a registered professional engineer
or architect shall certify that the floodproofing methods are reasonably
adequate to withstand the flood depths, pressures, velocities, impact
and uplift forces and other factors associated with the one-hundred-year
flood, and the Zoning Officer shall maintain in his office a record
of such certifications.
FLOODWAY
The channel of a river or other watercourse and the adjacent
land area that must be reserved in order to discharge the base flood
without cumulatively increasing the water surface elevation more than
one foot.
RESIDENTIAL
The term "residential" or "residence" is applied herein to
any lot, plot, parcel, tract, area or piece of land or any building
used exclusively for family dwelling purposes or intended to be so
used.
SUBSTANTIAL IMPROVEMENT
Any repair, reconstruction, or improvement of structure,
the cost of which equals or exceeds 50% of the market value of a structure
either before the improvement is started or, if the structure has
been damaged and is being restored, before the damage occurred. For
the purposes of this definition, substantial improvement is considered
to occur when the first 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 structure. The term
does not, however, include either any project for improvement of a
structure to comply with existing state or local health, sanitary,
or safety code specifications which are solely necessary to assure
safe living conditions; or any alteration of a structure listed on
the National Register of Historic Places or a State Inventory of Historic
Places.
WATER SURFACE ELEVATION
The heights in relation to the National Geodetic Vertical
Datum of 1929 expected to be reached by floods of various magnitudes
and frequencies at pertinent points in the floodplains of riverine
areas.
ZONE DESIGNATION
(1)
For the purposes of this chapter, the areas considered to be
flood-prone within the Borough shall be those areas identified as
being subject to the one-hundred-year flood in the Flood Insurance
Study prepared for the Borough of Mount Union by the Federal Insurance
Administration dated January 17, 1977.
(2)
For the purposes of this chapter, the following nomenclature
is used in referring to the various kinds of flood-prone areas:
(a)
FW (Floodway Area): the areas identified as "Floodway" in the
Flood Insurance Study prepared by the FIA.
(b)
FF (Flood-Fringe Area): the areas identified as "Floodway Fringe"
in the Flood Insurance Study prepared by the FIA.