Description: The National Flood Hazard Layer (NFHL) data incorporates all Flood Insurance Rate Map (FIRM) databases published by the Federal Emergency Management Agency (FEMA), and any Letters Of Map Revision (LOMRs) that have been issued against those databases since their publication date. It is updated on a monthly basis. The FIRM Database is the digital, geospatial version of the flood hazard information shown on the published paper FIRMs. The FIRM Database depicts flood risk information and supporting data used to develop the risk data. The primary risk classifications used are the 1-percent-annual-chance flood event, the 0.2-percent-annual-chance flood event, and areas of minimal flood risk. The FIRM Database is derived from Flood Insurance Studies (FISs), previously published FIRMs, flood hazard analyses performed in support of the FISs and FIRMs, and new mapping data, where available. The FISs and FIRMs are published by FEMA.The NFHL is available as State or US Territory data sets. Each State or Territory data set consists of all FIRM Databases and corresponding LOMRs available on the publication date of the data set. The specification for the horizontal control of FIRM Databases is consistent with those required for mapping at a scale of 1:12,000. This file is georeferenced to the Earth's surface using the Geographic Coordinate System (GCS) and North American Dataum of 1983 (NSRS-2007).The data in this layer, named FEMA_NFHL_POLY, include data published by FEMA as of July 2, 2023(Latest Study Effective Date = 06/21/2023; Latest LOMR Effective Date = 11/28/2022).
Feature Type: Polygon
Type: FeatureLayer
Display Field: DFIRM_ID
Primary Key Field: OBJECTID
Show Map Tips: False
Searchable: False
Identifiable: True
Queryable: True
Can Copy Feature: True
Snappable: True
Snapping Enabled: False
Has Attachments: False
Feature Label: {DFIRM_ID}
Feature Description: N/A
Feature Long Description: N/A
Feature Zoom Factor: N/A
Feature Zoom Scale: N/A
Feature Border Color: N/A
Feature Border Width: N/A
Feature Fill Color: N/A
Icon: N/A
Include in Layer List: True
Include in Legend: True
Can Toggle Labels: True
Show Labels: True
Allow Symbolization: True
Draw Index: N/A
Legend URL: N/A
Style Name: N/A
Data Provider: Default
Time Zone ID: N/A
Fields:
OBJECTID (Type: Int32, Visible: True, Searchable: True, Can Symbolize Unique Value: True, Can Symbolize Class Breaks: True, Addressable: True)
DFIRM_ID [Study Identifier] (Type: String, Visible: True, Searchable: True, Can Symbolize Unique Value: True, Can Symbolize Class Breaks: True, Addressable: True)
VERSION_ID [Version Identifier] (Type: String, Visible: True, Searchable: True, Can Symbolize Unique Value: True, Can Symbolize Class Breaks: True, Addressable: True)
FLD_AR_ID [Flood Area ID] (Type: String, Visible: True, Searchable: True, Can Symbolize Unique Value: True, Can Symbolize Class Breaks: True, Addressable: True)
STUDY_TYP [Study Type] (Type: String, Visible: True, Searchable: True, Can Symbolize Unique Value: True, Can Symbolize Class Breaks: True, Addressable: True)
LABEL [Label] (Type: String, Visible: True, Searchable: True, Can Symbolize Unique Value: True, Can Symbolize Class Breaks: True, Addressable: True)
FLD_ZONE [Flood Zone] (Type: String, Visible: True, Searchable: True, Can Symbolize Unique Value: True, Can Symbolize Class Breaks: True, Addressable: True)
ZONE_SUBTY [Flood Zone Subtype] (Type: String, Visible: True, Searchable: True, Can Symbolize Unique Value: True, Can Symbolize Class Breaks: True, Addressable: True)
SFHA_TF [Special Flood Hazard Area] (Type: String, Visible: True, Searchable: True, Can Symbolize Unique Value: True, Can Symbolize Class Breaks: True, Addressable: True)
STATIC_BFE [Static Base Flood Elevation] (Type: Double, Visible: True, Searchable: True, Can Symbolize Unique Value: True, Can Symbolize Class Breaks: True, Addressable: True)
V_DATUM [Vertical Datum] (Type: String, Visible: True, Searchable: True, Can Symbolize Unique Value: True, Can Symbolize Class Breaks: True, Addressable: True)
DEPTH [Depth, for Zone AO areas] (Type: Double, Visible: True, Searchable: True, Can Symbolize Unique Value: True, Can Symbolize Class Breaks: True, Addressable: True)
LEN_UNIT [Length Units] (Type: String, Visible: True, Searchable: True, Can Symbolize Unique Value: True, Can Symbolize Class Breaks: True, Addressable: True)
VELOCITY [Flood Flow Velocity] (Type: Double, Visible: True, Searchable: True, Can Symbolize Unique Value: True, Can Symbolize Class Breaks: True, Addressable: True)
VEL_UNIT [Velocity Unit] (Type: String, Visible: True, Searchable: True, Can Symbolize Unique Value: True, Can Symbolize Class Breaks: True, Addressable: True)
AR_REVERT [Restoration Zones – Zone AR] (Type: String, Visible: True, Searchable: True, Can Symbolize Unique Value: True, Can Symbolize Class Breaks: True, Addressable: True)
AR_SUBTRV [Restoration Zones – Zone AR] (Type: String, Visible: True, Searchable: True, Can Symbolize Unique Value: True, Can Symbolize Class Breaks: True, Addressable: True)
BFE_REVERT [Restoration Zones - BFE Revert] (Type: Double, Visible: True, Searchable: True, Can Symbolize Unique Value: True, Can Symbolize Class Breaks: True, Addressable: True)
DEP_REVERT [Restoration Zones - Depth Revert] (Type: Double, Visible: True, Searchable: True, Can Symbolize Unique Value: True, Can Symbolize Class Breaks: True, Addressable: True)
DUAL_ZONE [Restoration Zones - Dual Zone] (Type: String, Visible: True, Searchable: True, Can Symbolize Unique Value: True, Can Symbolize Class Breaks: True, Addressable: True)
SOURCE_CIT [Source Citation] (Type: String, Visible: True, Searchable: True, Can Symbolize Unique Value: True, Can Symbolize Class Breaks: True, Addressable: True)
GFID [County Code from FEMA] (Type: String, Visible: True, Searchable: True, Can Symbolize Unique Value: True, Can Symbolize Class Breaks: True, Addressable: True)
SHAPE (Type: Object, Visible: True, Searchable: True, Can Symbolize Unique Value: True, Can Symbolize Class Breaks: True, Addressable: True)
SHAPE.AREA (Type: Double, Visible: True, Searchable: True, Can Symbolize Unique Value: True, Can Symbolize Class Breaks: True, Addressable: True)
SHAPE.LEN (Type: Double, Visible: True, Searchable: True, Can Symbolize Unique Value: True, Can Symbolize Class Breaks: True, Addressable: True)