FLOOD00938

• County: Statewide
• Title: Guide to Flood Insurance Rate Maps
• Date: 5/1/1988
• Prepared By: FEMA
• Floodplain - Doc Type: Historic FEMA Regulatory Floodplain Information

designated as Zone B; and areas where
no tints are shown are designated as
Zone C or Zone D.

On newer Hold FIRMs, the dark,tinted
areas are designated as Zone A, AE, AH,
AO, A99, V, or VE; light,tinted areas are
designated as Zone X; and areas where
no tints are shown are designated as
Zone X or Zone D,

13. Floodway Designation (Newer Hold
FIRMs Only)
Identifies floodway areas, The floodway IS
the channel of a river or other
watercourse plus any adjacent floodplain
areas that must be kept free of
encroachments so that the IOO,year flood
discharge can be conveyed without
increasing the elevation of the 100,year
flood more than a specified amount.

14. Stream Line
Identifies the location of a watercourse.
Small streams are usually shown by a
single line that represents the approx,
imate local ion of the stream centerline,
Larger streams are often shown by a
double line that represents the
approximate location of the streambanks.

IS. BFE Line and BFE Label
Indicate the water,surface elevation of
the base flood referenced to the National
Geodetic Vertical Datum of 1929
(NGVD)-or another datum, if specified-
within SFHAs, The wavy BFE line is used
in areas where the BFE varies, such as
riverine floodplains, The BFE label, or
tag, appears in SFHAs where the BFE is
uniform across a large area, such as
lacustrine (lake) or coastal floodplains,
The BFE is usually expressed in feet but
is expressed in meters for some
communities.

16. Zone Division Line
Divides zones in SFHAs and divides areas
with different whole, foot BFEs in coastal
SFHAs.

17. Floodplain Boundaries
Sho....s the limits of the IOO,year and
500,year floodplains,

18. Floodway Boundary (Newer Hold
FIRMs Only)
Shows the limits of the flood way (see
Item 13).

19. Elevation Reference Mark (ERMI
Identifies a point where a ground
elevation has been established by survey,
Descriptions of the ERMs, including their
elevations (referenced to NGVD), are
provided. ERM elevations are usually
expressed in feet but are expressed in
meters for some communities.

Descriptions of the ERMs shown on a
Flat FIRM are provided on the last panel
of the FIRM. Descriptions of the ERMs
shown on older Hold FIRMs are usually
provided on the panel on which the
ERMs appear. Occasionally, when there is
no room to include the descriptions on
that panel, they are shown on another
panel, and an explanatory note is added
to the panel on which the descriptions
would have otherwise been shown, Des,
criptions of the ERMs that appear on
newer Hold FIRMs are provided in the
separately printed FIS report.

20. River Mile Marker
I ndicates distance in miles from a refer,
ence point on a river or other major
watercourse. A standard reference point
could be a river mouth, community corp,
orate limit, or a major physical feature,
such as a bridge or dam, River miles are
established only for selected streams and
therefore do not always appear on FIRMs,