These regulations, in conjunction with the Uniform Construction
Code, provide minimum requirements for development located in flood
hazard areas, including the subdivision of land and other developments;
site improvements and installation of utilities; placement and replacement
of manufactured homes; placement of recreational vehicles; new construction
and alterations, repair, reconstruction, rehabilitation or additions
of existing buildings and structures; substantial improvement of existing
buildings and structures, including repair of substantial damage;
installation of tanks; temporary structures and temporary or permanent
storage; utility and miscellaneous Group U buildings and structures;
and certain building work exempt from permit under the Uniform Construction
Code; and other buildings and development activities.
Margate City was accepted for participation in the National
Flood Insurance Program on June 19, 1971.
The National Flood Insurance Program (NFIP) floodplain management
regulations encourage that all federal, state, and local regulations
that are more stringent than the minimum NFIP standards take precedence
in permitting decisions. The FHACA requires that the effective Flood
Insurance Rate Map, most recent preliminary FEMA mapping and flood
studies, and Department delineations be compared to determine the
most restrictive mapping. The FHACA also regulates unstudied flood
hazard areas in watersheds measuring 50 acres or greater in size and
most riparian zones in New Jersey. Because of these higher standards,
the regulated flood hazard area in New Jersey may be more expansive
and more restrictive than the FEMA special flood hazard area. Maps
and studies that establish flood hazard areas are on file at the Margate
City Hall, 9001 Winchester Avenue, Margate City, New Jersey.
The following sources identify flood hazard areas in this jurisdiction
and must be considered when determining the best available flood hazard
data area:
A. Effective flood insurance study. Special flood hazard areas (SFHAs)
identified by the Federal Emergency Management Agency in a scientific
and engineering report entitled "Flood Insurance Study, Atlantic County,
New Jersey (All Jurisdictions)," dated August 28, 2018 and the accompanying
Flood Insurance Rate Maps (FIRM) identified in Table 1 whose effective
date is August 28, 2018, are hereby adopted by reference.
Table 1
|
---|
Map Panel #
|
Effective Date
|
Revision Letter
|
Map Panel #
|
Effective Date
|
Revision Letter
|
---|
34001C0432
|
8-28-2018
|
F
|
34001C0434
|
8-28-2018
|
F
|
34001C0453
|
8-28-2018
|
F
|
|
|
|
B. Federal best available information. Margate City shall utilize federal
flood information as listed in the table below that provides more
detailed hazard information, higher flood elevations, larger flood
hazard areas, and results in more restrictive regulations. This information
may include but is not limited to preliminary flood elevation guidance
from FEMA (such as Advisory Flood Hazard Area Maps, Work Maps or Preliminary
FIS and FIRM). Additional federal best available studies issued after
the date of this chapter must also be considered. These studies are
listed on FEMA's Map Service Center. This information shall be
used for floodplain regulation purposes only.
Table 2
|
---|
Map Panel #
|
Preliminary Date
|
Map Panel #
|
Preliminary Date
|
---|
34001C0432G
|
1-30-2015
|
34001C0453G
|
1-30-2015
|
34001C0434G
|
1-30-2015
|
|
|
C. Other best available data. Margate City shall utilize high water elevations from flood events, groundwater flooding areas, studies by federal or state agencies, or other information deemed appropriate by the Margate City. Other best available information may not be used which results in less restrictive flood elevations, design standards, or smaller flood hazard areas than the sources described in Subsections
A and
B above. This information shall be used for floodplain regulation purposes only.
D. State-regulated flood hazard areas. For state-regulated waters, the NJ Department of Environmental Protection (NJDEP) identifies the flood hazard area as the land, and the space above that land, which lies below the "Flood Hazard Area Control Act Design Flood Elevation," as defined in Article
IX, and as described in the New Jersey Flood Hazard Area Control Act at N.J.A.C. 7:13. A FHACA flood hazard area exists along every regulated water that has a drainage area of 50 acres or greater. Such area may extend beyond the boundaries of the special flood hazard areas (SFHAs) as identified by FEMA. No New Jersey State-studied waters in this community under the FHACA were identified.
The local design flood elevation (LDFE) is established in the flood hazard areas determined in §
145-11 above, using the best available flood hazard data sources, and the Flood Hazard Area Control Act minimum statewide elevation requirements for lowest floors in A, coastal A, and V zones, ASCE 24 requirements for critical facilities as specified by the Building Code, plus additional freeboard as specified by this chapter. At a minimum, the local design flood elevation shall be as follows:
A. For a delineated watercourse, the elevation associated with the best available flood hazard data area determined in §
145-11 above, plus three feet of freeboard, finishing either at the underside of the floor joist in a coastal high hazard area, or the top of the finished floor in non-coastal high hazard area zones, or as described by N.J.A.C. 7:13, whichever is most restrictive.
B. AO Zones. For Zone AO areas on the municipality's FIRM (or on
preliminary flood elevation guidance from FEMA), the local design
flood elevation is determined from the FIRM panel as the highest adjacent
grade plus the depth number specified plus three feet of freeboard
measured to the underside of the floor joist if the most restrictive
adjacent flood zone is in the coastal high hazard area, or to the
top of finished floor if the most restrictive adjacent flood zone
is not in the coastal high hazard area. If no depth number is specified,
the local design flood elevation is three feet to the underside of
the floor joist or to the finished first floor as described above,
whichever is more restrictive.
C. Class IV critical facilities. For any proposed development of new
and substantially improved Flood Design Class IV critical facilities,
the local design flood elevation must be the higher of the 0.2% annual
chance (500-year) flood elevation or the flood hazard area design
flood elevation with an additional two feet of freeboard in accordance
with ASCE 24, or three feet of freeboard to the underside of the floor
joist in coastal high hazard areas or finished first floor in non-coastal
high hazard areas, whichever is most restrictive.
D. Class III critical facilities. For proposed development of new and
substantially improved Flood Design Class III critical facilities
in coastal high hazard areas, the local design flood elevation must
be the higher of the 0.2% annual chance (500-year) flood elevation
or the flood hazard area design flood elevation with an additional
one foot of freeboard in accordance with ASCE 24, or three feet to
the underside of the floor joist in coastal high hazard areas or to
the finished first floor in non-coastal high hazard areas, whichever
is most restrictive.