Name: FEMA Flood Hazard Areas

Display Field: DFIRM_ID

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: FEMA FIRM Flood Hazard Areas adopted Flood Hazard Areas effective 4/23/2025. The data from FEMA was downloaded and then published. FEMA FIRM Flood Hazard Areas data was copied from the S_Fld_Haz_Ar shapefile in the FIRM Database. Proposed areas are grouped by risk, flood zone, and flood frequency as follows:Area of High Flood RiskZone A | 1% Annual Chance Flood EventZone AE | 1% Annual Chance Flood EventZone AE (Floodway) | 1% Annual Chance Flood EventZone AH | 1% Annual Chance Flood EventZone VE | 1% Annual Chance Flood EventS_Fld_Haz_Ar Field Descriptions: DFIRM_ID R Study Identifier. For a single jurisdiction Flood Risk Project, the value is composed of the two-digit State FIPS code and the fourdigit FEMA CID code (e.g., 480001). For a countywide Flood Risk Project, the value is composed of the two-digit State FIPS code, the three-digit county FIPS code and the letter “C” (e.g., 48107C). Within each FIRM Database, the DFIRM_ID value will be identical.VERSION_ID R Version Identifier. Identifies the product version and relates the feature to standards according to how it was created.FLD_AR_ID R Primary key for table lookup. Assigned by table creator.STUDY_TYP R Study Type. This describes the type of Flood Risk Project performed for flood hazard identification. Acceptable values for this field are listed in the D_Study_Typ table.FLD_ZONE R Flood Zone. This is a flood zone designation. These zones are used by FEMA to designate the SFHAs. Acceptable values for this field are listed in the D_Zone table.ZONE_SUBTY A Flood Zone Subtype. This field captures additional information about the flood zones. For example, Zone X could have “AREA WITH REDUCED FLOOD HAZARD DUE TO ACCREDITED LEVEE SYSTEM” or “0.2-PCT ANNUAL CHANCE FLOOD HAZARD” as a subtype. Types of floodways are also stored in this field. Floodways are designated by FEMA and adopted by communities to provide an area that will remain free of development to moderate increases in flood heights due to encroachment on the floodplain. Normal floodways are specified as ‘FLOODWAY.’ Special cases will have a more specific term for the designation (such as COLORADO RIVER) and will appear as a note on the hardcopy FIRM. See the FIRM Panel Technical Reference for available floodway notes. NOTE: The symbol ‘%’ is a reserved symbol in most software packages, so the word ‘percent’ was abbreviated to ‘PCT.’ Acceptable values for this field are listed in the D_Zone_Subtype table.SFHA_TF R Special Flood Hazard Area. If the area is within a SFHA this field would be true. This field will be true for any area coded as an A or V flood zone area. It should be false for any X or D flood areas. Acceptable values for this field are listed in the D_TrueFalse table.STATIC_BFE A 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. The BFE value will be shown beneath the zone label. In this situation the same BFE applies to the entire polygon. This normally occurs in lakes or coastal zones.V_DATUM A 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. Acceptable values for this field are listed in the D_V_Datum table.DEPTH A Depth This is the depth for Zone AO areas. This value is shown beneath the zone label on the FIRM. This field is only populated if a depth is shown on the FIRM.LEN_UNIT A 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. Acceptable values for this field are listed in the D_Length_Units table.VELOCITY A 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 value is shown beneath the zone label on the FIRM. This field is only populated when a velocity is associated with the flood zone area.VEL_UNIT A Velocity Unit. This is the unit of measurement for the velocity. This field is populated when the VELOCITY field is populated. Acceptable values for this field are listed in the D_Velocity_Units table.AR_REVERT A 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. Acceptable values for this field are listed in the D_Zone table, but should only include one of AE, AO, AH, A, and X domain values. AR_SUBTRV A Flood Control Restoration Zones – Zone AR Classification Zone Subtype. If this area is Zone AR in FLD_Zone field, this field would hold the zone subtype that area would revert to if the AR zone were removed. This field is only populated if the corresponding area is Zone AR. NOTE: The symbol ‘%’ is a reserved symbol in most software packages, so the word ‘percent’ was abbreviated to ‘PCT.’ Acceptable values for this field are listed in the D_Zone_Subtype_ table and must be one of the allowable subtypes for Zones AE, AO, AH, A or X.BFE_REVERT A 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 A 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.DUAL_ZONE A Flood Control Restoration Zones – Dual Zone Classification. If the flood hazard areas shown on the effective FIRM shall be designated as “dual” SFHAs (i.e., Zone AR/AE, Zone AR/AH, Zone AR/AO, Zone AR/A), this field will be coded as true. It should be false for any for AR Zones that revert to Shaded X. Acceptable values for this field are listed in the D_TrueFalse table.SOURCE_CIT R Source Citation. Abbreviation used in the metadata file when describing the source information for the feature. The abbreviation must match a value in L_Source_Cit.

Service Item Id: a486567b987e44a48ac9c96c26a4b778

Copyright Text: Federal Emergency Management Agency Federal Insurance and Mitigation Administration 500 C Street, S.W. Washington District of Columbia 20472 USA 1-877-336-2627 fema-riskmap-ithelp@fema.dhs.gov

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Supported Query Formats: JSON, geoJSON, PBF

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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: 658366.4748519086
YMin: 323325.96534984716
XMax: 1136082.1805077868
YMax: 568655.0750843653
Spatial Reference: 2926  (2926)  LatestVCSWkid(0)

Drawing Info:

Renderer:
Unique Value Renderer:
Field 1: Fld_Zone_S
Field 2: N/A
Field 3: N/A
Field Delimiter: ,
Default Symbol:
N/A
Default Label: N/A
UniqueValueInfos:
• Value: Zone A
  Label: Zone A
  Description: N/A
  Symbol:
  Style: esriSFSSolid
  Color: [85, 255, 0, 255]
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• Value: Zone AE
  Label: Zone AE
  Description: N/A
  Symbol:
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• Value: Zone AE (Floodway)
  Label: Floodway
  Description: N/A
  Symbol:
  Style: esriSFSSolid
  Color: [255, 0, 0, 255]
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  N/A
• Value: Zone AH
  Label: Zone AH
  Description: N/A
  Symbol:
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  Color: [255, 255, 0, 255]
  Outline:
  N/A
• Value: Zone VE
  Label: Zone VE
  Description: N/A
  Symbol:
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  Color: [132, 0, 168, 255]
  Outline:
  N/A
Transparency: 0
Labeling Info:

Feature Draw Order:

N/A

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HasZ: false

HasM: false

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HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Type ID Field: null

Fields:

• OBJECTID ( type: esriFieldTypeOID, alias: Object Identifier )
• DFIRM_ID ( type: esriFieldTypeString, alias: Study Identifier, length: 6 )
• VERSION_ID ( type: esriFieldTypeString, alias: Version Identifier, length: 11 )
• FLD_AR_ID ( type: esriFieldTypeString, alias: Primary key for table lookup, length: 25 )
• 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 )
• LEN_UNIT ( type: esriFieldTypeString, alias: Length Units, length: 16 )
• VELOCITY ( type: esriFieldTypeDouble, alias: Velocity )
• VEL_UNIT ( type: esriFieldTypeString, alias: Velocity Unit, length: 20 )
• AR_REVERT ( type: esriFieldTypeString, alias: Zone AR Classification, length: 17 )
• AR_SUBTRV ( type: esriFieldTypeString, alias: Zone AR Classification Zone, length: 76 )
• BFE_REVERT ( type: esriFieldTypeDouble, alias: BFE Revert )
• DEP_REVERT ( type: esriFieldTypeDouble, alias: Depth Revert )
• DUAL_ZONE ( type: esriFieldTypeString, alias: Dual Zone Classification, length: 1 )
• SOURCE_CIT ( type: esriFieldTypeString, alias: Source Citation, length: 11 )
• Fld_Risk ( type: esriFieldTypeString, alias: Flood Risk, length: 254 )
• Fld_Zone_S ( type: esriFieldTypeString, alias: Flood Zone, length: 254 )
• Fld_Zone_L ( type: esriFieldTypeString, alias: Flood Zone Label, length: 254 )
• SHAPE_Leng ( type: esriFieldTypeDouble, alias: Length - feet )
• Shape ( type: esriFieldTypeGeometry, alias: Shape )
• GlobalID ( type: esriFieldTypeGlobalID, alias: Global Identifier, length: 38 )
• Shape.STArea() ( type: esriFieldTypeDouble, alias: Area - square feet )
• Shape.STLength() ( type: esriFieldTypeDouble, alias: Shape Length (ft) )

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

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