All development and building work, including man-made changes
to improved or unimproved real estate for which specific provisions
are not specified in these regulations or the Uniform Construction
Code (N.J.A.C. 5:23), shall:
A. Be located and constructed to minimize flood damage;
B. Meet the limitations of Section
66-36A of this chapter when located in a regulated floodway;
C. Be anchored to prevent flotation, collapse or lateral movement resulting from hydrostatic and hydrodynamic loads, including the effects of buoyancy, during the conditions of flooding up to the Local Design Flood Elevation determined according to Section
66-12;
D. Be constructed of flood damage-resistant materials as described in ASCE 24 Chapter
5;
E. Have mechanical, plumbing, and electrical systems above the Local Design Flood Elevation determined according to Section
66-12 or meet the requirements of ASCE 24 Chapter
7 which requires that attendant utilities are located above the Local Design Flood Elevation unless the attendant utilities and equipment are:
(1) Specifically allowed below the Local Design Flood Elevation; and
(2) Designed, constructed, and installed to prevent floodwaters, including
any backflow through the system from entering or accumulating within
the components.
F. Not exceed the flood storage displacement limitations in fluvial
flood hazard areas in accordance with N.J.A.C. 7:13; and
G. Not exceed the impacts to frequency or depth of offsite flooding
as required by N.J.A.C. 7:13 in floodways.
Garages and accessory storage structures shall be designed and
constructed in accordance with the Uniform Construction Code.
Fences in floodways that have the potential to block the passage of floodwater, such as stockade fences and wire mesh fences, shall meet the requirements of Section
66-36A of these regulations. Pursuant to N.J.A.C. 7:13, any fence located in a floodway shall have sufficiently large openings so as not to catch debris during a flood and thereby obstruct floodwaters, such as barbed-wire, split-rail, or strand fence. A fence with little or no open area, such as a chain link, lattice, or picket fence, does not meet this requirement. Foundations for fences greater than six feet in height must conform with the Uniform Construction Code. Fences for pool enclosures having openings not in conformance with this section but in conformance with the Uniform Construction Code to limit climbing require a variance as described in Article
VII of this chapter.
Retaining walls, sidewalks and driveways that involve placement of fill in floodways shall meet the requirements of Section
66-36A of these regulations and N.J.A.C. 7:13.
Swimming pools shall be designed and constructed in accordance with the Uniform Construction Code. Above-ground swimming pools and below-ground swimming pools that involve placement of fill in floodways shall also meet the requirements of Section
66-36A of these regulations. Above-ground swimming pools are prohibited in floodways by N.J.A.C. 7:13.
In Coastal High Hazard Areas (V Zones) and Coastal A Zones,
development activities other than buildings and structures shall be
permitted only when also authorized by the appropriate Federal, State
or local authority; when located outside the footprint of, and not
structurally attached to, buildings and structures; and when analyses
prepared by a licensed professional engineer demonstrates no harmful
diversion of floodwater or wave runup and wave reflection that would
increase damage to adjacent buildings and structures. Such other development
activities include but are not limited to:
A. Bulkheads, seawalls, retaining walls, revetments, and similar erosion
control structures;
B. Solid fences and privacy walls, and fences prone to trapping debris,
unless designed and constructed to fail under flood conditions less
than the base flood or otherwise function to avoid obstruction of
floodwater; and
C. On-site filled or mound sewage systems.
In coastal high hazard areas and Coastal A Zones:
A. Minor grading and the placement of minor quantities of nonstructural
fill shall be permitted for landscaping and for drainage purposes
under and around buildings.
B. Nonstructural fill with finished slopes that are steeper than one
unit vertical to five units horizontal shall be permitted only when
an analysis prepared by a licensed professional engineer demonstrates
no harmful diversion of floodwater or wave runup and wave reflection
that would increase damage to adjacent buildings and structures.
C. Sand dune construction and restoration of sand dunes under or around
elevated buildings are permitted without additional engineering analysis
or certification of the diversion of floodwater or wave runup and
wave reflection where the scale and location of the dune work is consistent
with local beach-dune morphology and the vertical clearance is maintained
between the top of the sand dune and the lowest horizontal structural
member of the building.