Parent Layer: Planning Data

Name: FEMA National Flood Hazard Layer

Display Field: DFIRM_ID

Type: Feature Layer

Geometry Type: esriGeometryPolygon

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).

Copyright Text: Federal Emergency Management Agency

Default Visibility: false

MaxRecordCount: 1000

Supported Query Formats: JSON, geoJSON, PBF

Min Scale: 0

Max Scale: 0

Supports Advanced Queries: false

Supports Statistics: false

Has Labels: false

Can Modify Layer: true

Can Scale Symbols: false

Use Standardized Queries: true

Supports Datum Transformation: true

Extent:

XMin: -8136837.339796442
YMin: 5047207.569870056
XMax: -7780753.230678272
YMax: 5294886.415870193
Spatial Reference: 102100  (3857)

Drawing Info:

Renderer:
Unique Value Renderer:
Field 1: LABEL
Field 2: N/A
Field 3: N/A
Field Delimiter: ,
Default Symbol:
N/A
Default Label: N/A
UniqueValueInfos:
• Value: 1% Annual Chance Flood Hazard
  Label: 1% Annual Chance Flood Hazard
  Description: N/A
  Symbol:
  Style: esriSFSSolid
  Color: [0, 230, 255, 255]
  Outline:
  N/A
• Value: Regulatory Floodway
  Label: Regulatory Floodway
  Description: N/A
  Symbol:
  Style: esriSFSBackwardDiagonal
  Color: [0, 230, 255, 255]
  Outline:
  N/A
• Value: Area of Undetermined Flood Hazard
  Label: Area of Undetermined Flood Hazard
  Description: N/A
  Symbol:
  Style: esriSFSSolid
  Color: [242, 230, 115, 255]
  Outline:
  N/A
• Value: 0.2% Annual Chance Flood Hazard
  Label: 0.2% Annual Chance Flood Hazard
  Description: N/A
  Symbol:
  Style: esriSFSSolid
  Color: [255, 128, 0, 255]
  Outline:
  N/A
• Value: Area with Reduced Risk Due to Levee
  Label: Area with Reduced Risk Due to Levee
  Description: N/A
  Symbol:
  Style: esriSFSBackwardDiagonal
  Color: [104, 104, 104, 255]
  Outline:
  N/A
• Value: Area Not Included
  Label: Area Not Included
  Description: N/A
  Symbol:
  Style: esriSFSBackwardDiagonal
  Color: [178, 178, 178, 255]
  Outline:
  Style: esriSLSSolid
  Color: [156, 156, 156, 255]
  Width: 0
Transparency: 0
Labeling Info:

Advanced Query Capabilities:

Supports Statistics: false
Supports OrderBy: false
Supports Distinct: false
Supports Pagination: false
Supports TrueCurve: true
Supports Returning Query Extent: true
Supports Query With Distance: true
Supports Sql Expression: false
Supports Query With ResultType: false
Supports Returning Geometry Centroid: false
Supports Binning LOD: false
Supports Query With LOD Spatial Reference: false
Supports Percentile Statistics: false
Supports Having Clause: false
Supports Count Distinct: false
Supports Time Relation: true
Supports Sql Format: false
Supports Query Analytic: false
Supports Query With Current User: true

HasZ: false

HasM: false

Has Attachments: false

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Type ID Field: null

Fields:

• DFIRM_ID ( type: esriFieldTypeString, alias: Study Identifier, length: 6 )
• VERSION_ID ( type: esriFieldTypeString, alias: Version Identifier, length: 11 )
• FLD_AR_ID ( type: esriFieldTypeString, alias: Flood Area ID, length: 32 )
• STUDY_TYP ( type: esriFieldTypeString, alias: Study Type, length: 38 )
• FLD_ZONE ( type: esriFieldTypeString, alias: Flood Zone, length: 17 )
• ZONE_SUBTY ( type: esriFieldTypeString, alias: Flood Zone Subtype, length: 76 )
• SFHA_TF ( type: esriFieldTypeString, alias: Special Flood Hazard Area, length: 1 )
• STATIC_BFE ( type: esriFieldTypeDouble, alias: Static Base Flood Elevation )
• V_DATUM ( type: esriFieldTypeString, alias: Vertical Datum, length: 17 )
• DEPTH ( type: esriFieldTypeDouble, alias: Depth, for Zone AO areas )
• LEN_UNIT ( type: esriFieldTypeString, alias: Length Units, length: 16 )
• VELOCITY ( type: esriFieldTypeDouble, alias: Flood Flow Velocity )
• VEL_UNIT ( type: esriFieldTypeString, alias: Velocity Unit, length: 20 )
• AR_REVERT ( type: esriFieldTypeString, alias: Restoration Zones – Zone AR, length: 17 )
• AR_SUBTRV ( type: esriFieldTypeString, alias: Restoration Zones – Zone AR, length: 57 )
• BFE_REVERT ( type: esriFieldTypeDouble, alias: Restoration Zones - BFE Revert )
• DEP_REVERT ( type: esriFieldTypeDouble, alias: Restoration Zones - Depth Revert )
• DUAL_ZONE ( type: esriFieldTypeString, alias: Restoration Zones - Dual Zone, length: 1 )
• SOURCE_CIT ( type: esriFieldTypeString, alias: Source Citation, length: 21 )
• GFID ( type: esriFieldTypeString, alias: County Code from FEMA, length: 36 )
• LABEL ( type: esriFieldTypeString, alias: Label, length: 100 )
• Shape ( type: esriFieldTypeGeometry, alias: SHAPE )
• FID ( type: esriFieldTypeOID, alias: FID )
• SHAPE_AREA ( type: esriFieldTypeDouble, alias: SHAPE_Area )
• SHAPE_LEN ( type: esriFieldTypeDouble, alias: SHAPE_LEN )

Supported Operations:   Query   Query Attachments   Query Analytic   Generate Renderer   Return Updates

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