FLOOD07489

• County: Statewide
• Basin: Statewide
• Title: Appeals, Revisions, and Amendments to Flood Insurance Maps - A Guide for Community Officials
• Date: 1/1/1990
• Prepared By: FEMA
• Floodplain - Doc Type: Historic FEMA Regulatory Floodplain Information

vertical on one-and-one-half
horizontal (unless data are
submitted that justify the use of
steeper slopes).

3. Adequate erosion protection, in the
form of grass, vines, weeds, or similar
vegetation, must be provided for fill
slopes that will be subject to flow
velocities of S feet per second (fps) or
less during the 100-yearflood.

4. Adequate protection, in the form of
stone or rock armoring, must be
provided for fill slopes that will be
subject to flow velocities of greater
than S fps during the 1 OO-year flood.

. When the revision request involves the
exclusion from the SFHA of one or more
structures elevated by the placement of
fill, the requestor must submit data
which show that the elevation of the
lowest floor, including basement, of
each structure, as well as the elevation of
the lowest grade adjacent to each
structure, is at or above the BFE.

. When the revision request involves the
exclusion from the SFHA of a parcel of
land that has been filled, the requestor
must submit data which show that all
land within the legally described limits
of the parcel is at or above the BFE.

Note, however, that topographic alterations
alone, whether made by the placement of fill or
other means, will not serve as the basis for
removing individual structures or parcels of land
from coastal SFHAs subject to velocity hazards
(designated Zone V1-V30, VE, or V) or from
alluvial fan SFHAs (usually designated Zone AO,
with a depth and a velocity shown). For such
alterations to be considered, it must first be
shown that velocity hazards or alluvial fan flood
hazards, as appropriate, do not exist at the site.

Revisions Based on Effects of Proposed
Projects or Future Conditions

In general, FEMA will not revise an effective NFIP
map to show the effects of physical changes that
will occur in the floodplain as a result of
proposed projects or future conditions. Most

requests concerning such changes are handled
under the conditional map revision process,
which is described in Chapter S of this Guide.

However, a revision request may be based on the
ultimate effect of a flood protection system that
is under construction at the time of the request
and involves Federal funds. To support a request
for such a revision, the requestor must submit
the following data to show that the
requirements of Section 61.12 of the NFIP
regulations have been met:

1. Evidence that adequate progress has
been made on construction (i.e.,
evidence which shows that 100 percent
of the total cost of the complete system
has been authorized, at least 60 percent
of the total cost has been appropriated,
at least SO percent of the total cost has
been expended, all critical features are
under construction and each is SO
percent completed as measured by the
expenditure of budget funds, and the
community has not been responsible for
any delay in the completion of the
system)

2. A complete statement of all relevant
facts concerning the flood protection
system, including, but not limited to,
supporting technical data, cost
schedules, budget appropriation data,
and extent of Federal funding of the
constructi on of the system. The
statement must include information that
identifies all persons affected by the
system, a full and precise statement of
the purpose of the system, and a
detailed descri ption of the system,
including construction completion
target dates.

3. True copies of all contracts, agreements,
leases, instruments, and other
documents related to the system

4. Analysis that shows how the statement
of facts (Item 2) and the docu ments
(Item 3) bear on the evidence of
adequate progress (Item 1)

S. Statement of whether the flood
protection system is the su bj ect of

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