DIGITAL FLOOD INSURANCE RATE MAPS (DFIRM)
	LAYER: FIRMVC
	DIRECTORY: AEDATA/PublicSafety/firmvc_poly.shp
	DIRECTORY: Volusia.SDE/PublicSafety/firmvc_poly
	TYPE: POLYGON
	Abstract: The modified BFEs and revised map panels are effective as of Sept. 29, 2017 and revise the FIRM that was in effect prior to that date. Four panels were revised Aug. 7, 2018 and have been included in the product. Four LOMR areas were included in Jan. 2020 and reflect changes ranging from Aug. 28, 2018 through Jan. 10, 2020. These files are digital copies of the flood risk maps for Volusia county in PDF file format. Flood zone boundaries and elevations depicted on these maps may be adjusted later. Additionally, FEMA may update the FIRMs at any time, which may not coincide with this file’s update cycle. To view the most up to date information, visit FEMA’s NFHL Viewer. The most recent official shapefiles can be downloaded from the FEMA Flood Map Service Center. A FIRM (also referred to as a flood map) is the official map that shows Special Flood Hazard Areas (SFHA) and the risk premium zones applicable to a community. Risk zones indicated on a FIRM provide a basis for establishing flood insurance coverage premium rates offered through the National Flood Insurance Program (NFIP). This dataset enables a visualization of the floodplain and floodway extents. Due to the nature of this data, often times ESRI generated base maps and flood data can potentially be misaligned, therefore actual flood extents may be misrepresented. This product is not intended to be used for regulatory purposes and should only be used as a planning and visualization tool.
	Update/Review Frequency: Review January and July. Last updated 1/30/20
	Spatial Domain
	West Coordinate:		-81.359054
	East Coordinate:		-80.928748
	North Coordinate:		29.246552
	South Coordinate:		28.846581
	Spatial Data Information
	Data Type:		digital map
	Data Format:		SDE Feature Class
	Data Projection:		NAD 1983 HARN StatePlane Florida East FIPS 0901 Feet
FIELDS
NAME		DESCRIPTION
EFF_DATE		This is the effective date of the current map revision.
FLD_ZONE		This is a flood zone designation. These zones are used by FEMA to designate the SFHAs and for insurance rating purposes.
FLOODWAY		FLOODWAY' = The channel of a river or other watercourse and the adjacent land areas that must be reserved in order to discharge the base flood without cumulatively increasing the water surface elevation more than a designated height.
SFHA_TF		Special Flood Hazard Area. If the area is within a SFHA this field would be true (T). This field will be true for any area coded as an A or V flood zone area. It should be false (F) for any X or D flood areas.
STATIC_BFE		"Static Base Flood Elevation. This field will be populated for areas that have been determined to have a constant Base Flood Elevation (BFE) over a flood zone. In this situation the same BFE applies to the entire polygon. This normally occurs in lakes or coastal zones."
V_DATUM		Vertical Datum. The vertical datum indicates the reference surface from which the flood elevations are measured. Normally this would be North American Vertical Datum of 1988 for new studies. This field is only populated if the STATIC_BFE field is populated.
DEPTH		"Depth This is the depth for Zone AO areas. This field is only populated if a depth is shown on the FIRM."
LEN_UNIT		Length Units. This unit indicates the measurement system used for the BFEs and/or depths. Normally this would be feet. This field is only populated if the STATIC_BFE or DEPTH field is populated.
VELOCITY		"Velocity. This is the velocity measurement of the flood flow in the area. Normally this is applicable to alluvial fan areas (certain Zone AO areas). This field is only populated when a velocity is associated with the flood zone area."
VEL_UNIT		Velocity Unit. This is the unit of measurement for the velocity. This field is populated when the VELOCITY field is populated.
AR_REVERT		Flood Control Restoration Zones – Zone AR Classification. If this area is Zone AR in FLD_Zone field, this field would hold the zone that area would revert to if the AR zone were removed. This field is only populated if the corresponding area is Zone AR.
BFE_REVERT		Flood Control Restoration Zones – BFE Revert. If zone is Zone AR in FLD_Zone field, this field would hold the static base flood elevation for the reverted zone. This field is populated when Zone equals AR and the reverted zone has a static BFE.
DEP_REVERT		Flood Control Restoration Zones – Depth Revert. If zone is Zone AR in FLD_Zone field, this field would hold the flood depth for the reverted zone. This field is populated when Zone equals AR and the reverted zone has a depth assigned.
SOURCE_C_1		Source Citation. Abbreviation used in the metadata file when describing the source information for the feature.
ACRES		Area value in acres.

CODE DESCRIPTIONS

ZONE	DESCRIPTION
SPECIAL FLOOD HAZARD AREAS INUNDATED BY 100-YEAR FLOOD
A	No base flood elevations determined
AE	Base flood elevations determined.
AH	Flood depths of 1 to 3 feet (usually areas of ponding): base flood elevations determined.
AO	Flood depths of 1 to 3 feet (usually sheet flow on sloping terrain); average depths determined. For areas of alluvial fan flooding, velocities also determined.
A99	To be protected from 100-year flood by Federal flood protection system under construction; no base flood elevations determined.
V	Coastal flood with velocity hazard (wave action); no base flood elevations determined.
VE	Coastal flood with velocity hazard (wave action); base flood elevations determined.
OTHER FLOOD AREAS
X	Areas of 500-year flood; areas of 100-year flood with average depths of less than 1 foot or with drainage areas less than 1 square mile; and areas protected by levees from 100-year flood.
D	Areas in which flood hazards are undetermined, but possible.

ANNOTATION *

LEVEL	DESCRIPTION	SYMBOL	SIZE
1	Elevations	76	Varies*
2	Coastal Barrier Notations	70	Varies*
3	Coastal Base Flood Elevation Notes	43	Varies*
4	Elevation Notes	43	Varies*

* Use the SDE layer “firmanno” to size annotation in ArcMap