View In:   ArcGIS Online Map Viewer

Name: FEMA Flood Elevation Lines

Display Field: dfirm_id

Type: Feature Layer

Geometry Type: esriGeometryPolyline

Description: Base flood elevation lines indicate the rounded whole foot water-surface elevation of the 1 percent annual chance flood. Definition source: FEMA Guidelines and Specifications for Flood Hazard Mapping Partners, Appendix L: Guidance for Preparing Draft Digital Data and DFIRM Databases.The Digital Flood Insurance Rate Map (DFIRM) 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 DFIRM Database is derived from Flood Insurance Studies (FISs), previously published Flood Insurance Rate Maps (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 the Federal Emergency Management Agency (FEMA). In addition to the preceding, required text, the Abstract should also describe the projection and coordinate system as well as a general statement about horizontal accuracy.Last updated November 2025.

Service Item Id: 2298bc1b15574c518d31ac05a9785883

Copyright Text: FEMA

Default Visibility: false

MaxRecordCount: 2000

MaxSelectionCount: 0

Supported Query Formats: JSON, geoJSON, PBF

Min Scale: 0.0

Max Scale: 0.0

Supports Advanced Queries: true

Supports Statistics: true

Can Scale Symbols: false

Use Standardized Queries: true

Supports ValidateSQL: true

Supports Calculate: true

Extent:

XMin: 684584.6357801585
YMin: 983413.9589375643
XMax: 930272.7936910917
YMax: 1141529.9233250045
Spatial Reference: 102696  (102696)  LatestVCSWkid(0)

Drawing Info:

Renderer:
Simple Renderer:
Symbol:
Style: esriSLSSolid
Color: [158, 63, 72, 255]
Width: 1
Label: N/A
Description: N/A
Transparency: 0
Labeling Info:

Feature Draw Order:

N/A

Advanced Query Capabilities:

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

HasZ: false

HasM: false

Has Attachments: false

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Type ID Field:

Fields:

• objectid ( nullable: false, editable: false, defaultValue: null, length: 4, type: esriFieldTypeOID, modelName: OBJECTID, alias: OBJECTID )
• dfirm_id ( modelName: DFIRM_ID, nullable: true, editable: true, defaultValue: null, length: 6, alias: DFIRM_ID, type: esriFieldTypeString )
• version_id ( modelName: VERSION_ID, nullable: true, editable: true, defaultValue: null, length: 11, alias: VERSION_ID, type: esriFieldTypeString )
• bfe_ln_id ( modelName: BFE_LN_ID, nullable: true, editable: true, defaultValue: null, length: 32, alias: BFE_LN_ID, type: esriFieldTypeString )
• elev ( modelName: ELEV, nullable: true, editable: true, defaultValue: null, alias: ELEV, type: esriFieldTypeDouble )
• len_unit ( modelName: LEN_UNIT, nullable: true, editable: true, defaultValue: null, length: 16, alias: LEN_UNIT, type: esriFieldTypeString )
• v_datum ( modelName: V_DATUM, nullable: true, editable: true, defaultValue: null, length: 17, alias: V_DATUM, type: esriFieldTypeString )
• source_cit ( modelName: SOURCE_CIT, nullable: true, editable: true, defaultValue: null, length: 21, alias: SOURCE_CIT, type: esriFieldTypeString )
• SHAPE__Length ( virtual: true, nullable: true, editable: false, defaultValue: null, alias: SHAPE__Length, type: esriFieldTypeDouble )

Templates:

• Name: FEMA Flood Elevation Lines
  Description:
  Prototype:
  len_unit: null
  elev: null
  version_id: null
  bfe_ln_id: null
  v_datum: null
  source_cit: null
  dfirm_id: null
  
  Drawing Tool: esriFeatureEditToolLine

Capabilities: Query

Sync Can Return Changes: true

Is Data Versioned: false

Supports Rollback On Failure: true

Supports ApplyEdits With Global Ids: false

Supports ApplyEdits By Upload Id: true

Supports Query With Historic Moment: false

Supports Coordinates Quantization: true

Child Resources:

Supported Operations:   Query   Query Attachments   Query Analytic   Query Top Features   Query Bins   Append   Validate SQL   Generate Renderer   Return Updates   Metadata   Update Metadata