HomeMy WebLinkAboutMaps and IllustrationFREEBOARD ILLUSTRATED
The Federal Emergency Management Agency defines and discusses "freeboard" as "a factor of
safety usually expressed in feet above a flood level for purposes of floodplain management."
That is, Freeboard is the provision of extra height above which the habitable portions of a
residential building are constructed.
While the Florida Building Code already requires the provision of one foot of Freeboard
above the Base Flood Elevation for residential construction, the proposed amendment would
allow for the provision of four additional feet above that, totalling five feet of Freeboard.
FEMA describes the Base Flood as the flood that has a one percent chance of occur-
ring in any year. The Base Flood Elevation is the height above mean sea level to which
FEMA calculates the Base Flood would reach.
FREEBOARD
BASE FLOOD ELEVATION
9,
15'
G E ELEVATIO
,140
25'
MEAN SEA LEVEL
GRANDFATHERED
(NONCONFORMING)
15'
ALLOWED UNDER
CURRENT REGULATIONS
5'
25'
ALLOWED UNDER
PROPOSED REGULATIONS
Created by the City of Miami Planning Department
February 2019
NW 46TH ST
SR 112
NW 62ND ST
a w
H
r.
Illt
NW 87TH ST
-��-� „op ei,ANE 71 ST ST
NW 54TH ST
ti
j SRiL�L,�
z �QpR 2F Ojet
a R
NW 21ST ST
RO 'AP NW 20TH ST
z
FEMA BASE FLOOD ELEVATION
Special Flood Hazard Area*
FEMA Special Flood Hazard Area (Freeboard Proposed)""
Base Flood Elevation (Feet)
4-6
7-8
9-10
11 - 12
-13-16
Water
0 0
0
z�
r
*The Federal Emergency Management Administration defines
the Special Flood Hazard Area as "the land area covered
by the floodwaters of the base flood...on NFIP maps. The SFHA
is the area where the National Flood Insurance Program's
(NFIP's) floodplain management regulations must be enforced
and the area where the mandatory purchase of flood insurance
applies..."
FEMA describes the Base Flood as the flood that has a one
percent chance of occurring in any year. The Base Flood
Elevation is the height above mean sea level to which FEMA
calculates the Base Flood would reach.
1111.d Y•,
""Miami 21 Text Amendment (File ID 4943) proposes to
allow Freeboard within the Special Flood Hazard Area. All
areas outside the Special Flood Hazard Area are not
subject to the proposed amendment.
0-
NW 7TH ST
W FLAGLER ST
SW 32ND AVE
SW 8TH ST
SW 16TH ST
SW 22ND ST
BIRD AVE
GRAND AVE
Sy
fAk
. }
� �rL
Orel
w
w j
Q 0
o
N ¢ w
z
Z
NE 46TH ST
f
NE 29TH ST
z
co
m
NE 36TH ST
I
►_ •�-.'
�
' /3gSf
�
pV� _�836 EXP�' 41 ��`�
~1 NW 6TH ST \4'/��-.
SW 1ST ST , vi
rrA
l ,
erP,�
0
SW 22ND AVE
SW 7TH ST
KENNEDY CSWY
1.5
Created by the City of Miami Planning Department
1/15/2019
N:\PLANNING\GIS\2 MXD\2.9Environmental
3 Miles
FEMA FL00D ZONES
Special Flood Hazard Area*
FEMA Special Flood Hazard Area
(Freeboard Proposed)**
Water
Flood Zone
AH - usually areas of ponding
AE - storm surge/riverine flooding
VE - storm surge with wave action
z
z
z
H
z
SW 57
0
z
� n
*The Federal Emergency Management Administration defines
the Special Flood Hazard Area as "the land area covered
by the floodwaters of the base flood...on NFIP maps. The
SFHA is the area where the National Flood Insurance Program's
(NFIP's) floodplain management regulations must be enforced
and the area where the mandatory purchase of flood insurance
applies..."
FEMA describes the flood zones as follows:
Z
NW 21 ST ST
z
AH - "the zone...that corresponds to the areas of 1 percent
annual chance shallow...(usually areas of ponding) where
average depths are between 1 and 3 ft."
AE - "the zone that corresponds to the 1 percent annual
chance floodplain..."
VE - "the zone that corresponds to areas within the 1
percent annual chance coastal flooplain that have
additional hazards associated with storm waves."
**Miami 21 Text Amendment (File ID 4943) proposes to
allow Freeboard within the Special Flood Hazard Area. All
areas outside the Special Flood Hazard Area are not
subject to the proposed amendment.
NW 62ND ST
NW 46TH ST
SR112
0
z SW 16TH ST
0)
SW 22ND ST
BIRD AVE
GRAND 1
AVE f �,
7
POINCIANA
AVE'
`sP
NW 79TH ST
NW7LSTST
NW 54TH ST
SW 1ST ST
SW 8TH ST
NW 20TH ST
SW 7TH ST
0
NW 87TH ST
1
NW 6TH ST-
KENNEDY CSWY
VENETIAN CSWY
1.5
Created by the City of Miami Planning Department
1/15/2019
N:\PLANNING\GIS\2 MXD\2.9Environmental
3 Miles