Parent Layer: Stressors

Name: FEMA Flood Hazard Areas

Display Field: DFIRM_ID

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: The National Flood Hazard Layer (NFHL) is a compilation of GIS data that comprises a nationwide digital Flood Insurance Rate Map. The GIS data and services are designed to provide the user with the ability to determine the flood zone, base flood elevation, and floodway status for a particular location. It also has information about the NFIP communities, map panels, cross sections, hydraulic structures, Coastal Barrier Resource System, and base maps such as road, stream, and public land survey data. Through flood studies, FEMA produces Flood Insurance Study Reports, FIRM Panels, and FIRM Databases. FIRM Databases that become effective are incorporated into the NFHL. Updates to the NFHL are issued through Letters of Map Revision (LOMRs) and Letters of Map Amendment (LOMAs). Continuously updated, the NFHL serves as a Digital Flood Insurance Rate Map representing the current effective flood data for those communities where maps have been digitized. NFHL data can be viewed with widely available GIS software, including freely available programs that work with GIS shapefiles. For more information on the NFHL, see the online resources referenced herein. ___Using base maps:___ The minimum horizontal positional accuracy for base map hydrographic and transportation features used with the NFHL is the NSSDA radial accuracy of 38 feet. ___Letter of Map Amendment (LOMA) point locations___ are approximate. The location of the LOMA is referenced in the legal description of the letter itself. LOMA points can be viewed in the NFHL Interactive Map on the FEMA GeoPlatform.

Copyright Text:

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MaxRecordCount: 1000

Supported Query Formats: JSON, geoJSON, PBF

Min Scale: 0

Max Scale: 0

Supports Advanced Queries: true

Supports Statistics: true

Has Labels: false

Can Modify Layer: true

Can Scale Symbols: false

Use Standardized Queries: true

Supports Datum Transformation: true

Extent:

XMin: -1.9018759082299307E7
YMin: -1617292.3240968473
XMax: 1.623396502928359E7
YMax: 1.0045992016193718E7
Spatial Reference: 102100  (3857)

Drawing Info:

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Default Symbol:
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Default Label: N/A
UniqueValueInfos:
• Value: A,
  Label: 1% Annual Flood Hazard
  Description: N/A
  Symbol:
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  Color: [0, 230, 255, 255]
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• Value: A99,
  Label: 1% Annual Flood Hazard
  Description: N/A
  Symbol:
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  Color: [0, 230, 255, 255]
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• Value: AE,1 PCT ANNUAL CHANCE FLOOD HAZARD CONTAINED IN CHANNEL
  Label: 1% Annual Flood Hazard
  Description: N/A
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  Label: 1% Annual Flood Hazard
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• Value: AH,
  Label: 1% Annual Flood Hazard
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• Value: AO,
  Label: 1% Annual Flood Hazard
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• Value: V,
  Label: 1% Annual Flood Hazard
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• Value: VE,
  Label: 1% Annual Flood Hazard
  Description: N/A
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• Value: A,1 PCT ANNUAL CHANCE FLOOD HAZARD CONTAINED IN CHANNEL
  Label: 1% Annual Flood Hazard
  Description: N/A
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  Color: [0, 230, 255, 255]
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• Value: AE,1 PCT ANNUAL CHANCE FLOOD HAZARD CONTAINED IN STRUCTURE
  Label: 1% Annual Flood Hazard
  Description: N/A
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• Value: AE,AE
  Label: 1% Annual Flood Hazard
  Description: N/A
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• Value: A,ADMINISTRATIVE FLOODWAY
  Label: Regulatory Floodway
  Description: N/A
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  Outline:
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• Value: VE,RIVERINE FLOODWAY SHOWN IN COASTAL ZONE
  Label: Regulatory Floodway
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• Value: AE,ADMINISTRATIVE FLOODWAY
  Label: Regulatory Floodway
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  Outline:
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• Value: AE,COMMUNITY ENCROACHMENT AREA
  Label: Regulatory Floodway
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• Value: AE,FLOODWAY
  Label: Regulatory Floodway
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  Outline:
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• Value: AE,FLOODWAY CONTAINED IN CHANNEL
  Label: Regulatory Floodway
  Description: N/A
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  Outline:
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• Value: AE,FLOODWAY CONTAINED IN STRUCTURE
  Label: Regulatory Floodway
  Description: N/A
  Symbol:
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  Color: [255, 0, 0, 255]
  Outline:
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• Value: AE,STATE ENCROACHMENT AREA
  Label: Regulatory Floodway
  Description: N/A
  Symbol:
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  Color: [255, 0, 0, 255]
  Outline:
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• Value: AH,FLOODWAY
  Label: Regulatory Floodway
  Description: N/A
  Symbol:
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  Color: [255, 0, 0, 255]
  Outline:
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• Value: AO,FLOODWAY
  Label: Regulatory Floodway
  Description: N/A
  Symbol:
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  Color: [255, 0, 0, 255]
  Outline:
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• Value: AE,AREA OF SPECIAL CONSIDERATION
  Label: Special Floodway
  Description: N/A
  Symbol:
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  Outline:
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• Value: AE,COLORADO RIVER FLOODWAY
  Label: Special Floodway
  Description: N/A
  Symbol:
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  Outline:
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• Value: D,
  Label: Area of Undetermined Flood Hazard
  Description: N/A
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  Color: [242, 230, 115, 255]
  Outline:
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• Value: X,0.2 PCT ANNUAL CHANCE FLOOD HAZARD
  Label: 0.2% Annual Chance Flood Hazard
  Description: N/A
  Symbol:
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  Color: [255, 128, 0, 255]
  Outline:
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• Value: X,0.2 PCT ANNUAL CHANCE FLOOD HAZARD CONTAINED IN STRUCTURE
  Label: 0.2% Annual Chance Flood Hazard
  Description: N/A
  Symbol:
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  Outline:
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• Value: X,0.2 PCT ANNUAL CHANCE FLOOD HAZARD CONTAINED IN CHANNEL
  Label: 0.2% Annual Chance Flood Hazard
  Description: N/A
  Symbol:
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  Color: [255, 128, 0, 255]
  Outline:
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• Value: X,1 PCT DEPTH LESS THAN 1 FOOT
  Label: 0.2% Annual Chance Flood Hazard
  Description: N/A
  Symbol:
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  Color: [255, 128, 0, 255]
  Outline:
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• Value: X,1 PCT FUTURE CONDITIONS
  Label: Future Conditions 1% Annual Chance Flood Hazard
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  Outline:
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• Value: X,1 PCT FUTURE CONDITIONS CONTAINED IN STRUCTURE
  Label: Future Conditions 1% Annual Chance Flood Hazard
  Description: N/A
  Symbol:
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  Outline:
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• Value: X,AREA WITH REDUCED FLOOD RISK DUE TO LEVEE
  Label: Area with Reduced Risk Due to Levee
  Description: N/A
  Symbol:
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  Color: [0, 0, 0, 255]
  Outline:
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Transparency: 0
Labeling Info:

Advanced Query Capabilities:

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Type ID Field: null

Fields:

• OBJECTID ( type: esriFieldTypeOID, alias: OBJECTID )
• DFIRM_ID ( type: esriFieldTypeString, alias: DFIRM_ID, length: 6 )
• VERSION_ID ( type: esriFieldTypeString, alias: VERSION_ID, length: 11 )
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• SFHA_TF ( type: esriFieldTypeString, alias: SFHA_TF, length: 1 )
• STATIC_BFE ( type: esriFieldTypeDouble, alias: STATIC_BFE )
• V_DATUM ( type: esriFieldTypeString, alias: V_DATUM, length: 17 )
• DEPTH ( type: esriFieldTypeDouble, alias: DEPTH )
• LEN_UNIT ( type: esriFieldTypeString, alias: LEN_UNIT, length: 16 )
• VELOCITY ( type: esriFieldTypeDouble, alias: VELOCITY )
• VEL_UNIT ( type: esriFieldTypeString, alias: VEL_UNIT, length: 20 )
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• SOURCE_CIT ( type: esriFieldTypeString, alias: SOURCE_CIT, length: 21 )
• GFID ( type: esriFieldTypeString, alias: GFID, length: 36 )
• SHAPE ( type: esriFieldTypeGeometry, alias: SHAPE )
• SHAPE_Length ( type: esriFieldTypeDouble, alias: SHAPE_Length )
• SHAPE_Area ( type: esriFieldTypeDouble, alias: SHAPE_Area )

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

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