The following requirements apply in Special Flood Hazard Area
Districts:
A. Within Zone A, where the base flood elevation is not provided on
the FIRM, the applicant shall obtain any existing base flood elevation
data and it shall be reviewed by the Building Inspector for its reasonable
utilization toward meeting the elevation of floodproofing requirements,
as appropriate, of the State Building Code.
B. In the floodway designated on the Flood Insurance Rate Map, the following
provisions shall apply:
(1)
All encroachments, including fill, new construction, substantial
improvements to existing structures, and other development, are prohibited
unless certification by a registered professional engineer is provided
by the applicant demonstrating that such encroachment shall not result
in any increase in flood level during the occurrence of the base flood.
The base flood is the flood having a one-percent chance of being equaled
or exceeded in any given one year.
(2)
Any encroachment meeting the above standard shall comply with
the floodplain (special flood hazard area) standards of the State
Building Code as well as the performance standards in 310 CMR (Wetlands
Protection Regulations).
(3)
Base flood elevation data is required for subdivision proposals
or other developments greater than 50 lots or five acres, whichever
is the lesser, within the unnumbered A Zones.
(4)
All subdivision proposals must be designed to assure that:
(a)
Such proposals minimize flood damage;
(b)
All public utilities and facilities are located and constructed
to minimize or eliminate flood damage; and
(c)
Adequate drainage is provided to reduce exposure to flood hazards
(5)
Notification of watercourse alteration. In a riverine situation,
the Building Inspector or Board of Selectmen shall require the applicant
to notify the following of any alteration or relocation of a watercourse:
(b)
NFIP State Coordinator.
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Massachusetts Department of Conservation and Recreation
251 Causeway Street, Suite 600-700
Boston, MA 02114-2104
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(c)
NFIP Program Specialist.
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Federal Emergency Management Agency, Region I
99 High Street, 6th Floor
Boston, MA 02110
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(6)
In Zones A and AE, along watercourses that have not had a regulatory
floodway designated, the best available federal, state, local, or
other floodway data shall be used to prohibit encroachments in floodways
which would result in any increase in flood levels within the community
during the occurrence of the base flood discharge.