Parent Layer: STATEWIDE DATA

Name: BFE Flood Area (TWDB)

Display Field: EST_ID

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: The Flood Risk Information Report produced by the Estimated Base Flood Elevation (estBFE) Viewer includes estimated Base Flood Elevation (BFE) and approximate flood depths determined from gridded datasets constructed from engineering flood models. It also includes area downloads for HEC-RAS (Hydrologic Engineering Center’s River Analysis System) modeling. HEC-RAS software allows the user to perform one-dimensional steady flow, one and two-dimensional unsteady flow calculations, sediment transport/mobile bed computations, and water temperature/water quality modeling. (More information)For downloadable layers: At the link above, select Map Layers, then Data Availability (BLE), select “On” for status & data download. Click an area on the map to view downloadable datasets.Statewide BLE data is expected to be available on the BLE website for download by summer 2025. To see the current progress of BLE development throughout the state and the status for a given watershed, please see the BLE Status Dashboard here: BLE Status Dashboard (arcgis.com). For BLE data inquiries, please contact BLE@twdb.texas.gov.

Service Item Id: 75043b82ef4c4fc098f0e412b00765e9

Copyright Text: TWDB, FEMA, USGS, 2026

Default Visibility: false

MaxRecordCount: 2000

MaxSelectionCount: 2000

Supported Query Formats: JSON, geoJSON, PBF

Min Scale: 35000.0

Max Scale: 0.0

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: 1722132.964163878
YMin: 1.2896405856157167E7
XMax: 3695399.36982343
YMax: 1.538996690100232E7
Spatial Reference: 103161  (6588)  LatestVCSWkid(0)

Drawing Info:

Renderer:
Unique Value Renderer:
Field 1: FLD_ZONE
Field 2: N/A
Field 3: N/A
Field Delimiter: ,
Default Symbol:
N/A
Default Label: N/A
UniqueValueInfos:
• Value: A
  Label: High Risk (1% Flood Zone)
  Description: N/A
  Symbol:
  Style: esriSFSSolid
  Color: [232, 190, 255, 255]
  Outline:
  Style: esriSLSSolid
  Color: [110, 110, 110, 0]
  Width: 0
• Value: X
  Label: Low to Moderate Risk (0.2% Flood Zone)
  Description: N/A
  Symbol:
  Style: esriSFSSolid
  Color: [197, 0, 255, 255]
  Outline:
  Style: esriSLSSolid
  Color: [110, 110, 110, 0]
  Width: 0
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: true
Supports Returning Query Extent: true
Supports Query With Distance: true
Supports Sql Expression: true
Supports Query With ResultType: false
Supports Returning Geometry Centroid: false
Supports Binning LOD: false
Supports Query With LOD Spatial Reference: false
Supports Percentile Statistics: true
Supports Having Clause: true
Supports Count Distinct: true
Supports Time Relation: true
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: null

Fields:

• OBJECTID ( type: esriFieldTypeOID, alias: OBJECTID )
• EST_ID ( type: esriFieldTypeString, alias: EST_ID, length: 20 )
• VERSION_ID ( type: esriFieldTypeString, alias: VERSION_ID, length: 11 )
• EST_AR_ID ( type: esriFieldTypeString, alias: EST_AR_ID, length: 25 )
• ZONE_SUBTY ( type: esriFieldTypeString, alias: ZONE_SUBTY, length: 72 )
• V_DATUM ( type: esriFieldTypeString, alias: V_DATUM, length: 17 )
• LEN_UNIT ( type: esriFieldTypeString, alias: LEN_UNIT, length: 16 )
• SOURCE_CIT ( type: esriFieldTypeString, alias: SOURCE_CIT, length: 15 )
• EST_Risk ( type: esriFieldTypeString, alias: EST_Risk, length: 30 )
• STUDY_TYP ( type: esriFieldTypeString, alias: STUDY_TYP, length: 28 )
• SFHA_TF ( type: esriFieldTypeString, alias: SFHA_TF, length: 1 )
• STATIC_BFE ( type: esriFieldTypeDouble, alias: STATIC_BFE )
• DEPTH ( type: esriFieldTypeDouble, alias: DEPTH )
• VELOCITY ( type: esriFieldTypeDouble, alias: VELOCITY )
• VEL_UNIT ( type: esriFieldTypeString, alias: VEL_UNIT, length: 20 )
• AR_REVERT ( type: esriFieldTypeString, alias: AR_REVERT, length: 17 )
• AR_SUBTRV ( type: esriFieldTypeString, alias: AR_SUBTRV, length: 72 )
• BFE_REVERT ( type: esriFieldTypeDouble, alias: BFE_REVERT )
• DEP_REVERT ( type: esriFieldTypeDouble, alias: DEP_REVERT )
• DUAL_ZONE ( type: esriFieldTypeString, alias: DUAL_ZONE, length: 1 )
• FLD_ZONE ( type: esriFieldTypeString, alias: FLD_ZONE, length: 17 )
• MERGE_SRC ( type: esriFieldTypeString, alias: MERGE_SRC, length: 255 )
• GlobalID ( type: esriFieldTypeGlobalID, alias: GlobalID, length: 38 )
• Shape ( type: esriFieldTypeGeometry, alias: Shape )
• Shape.STArea() ( type: esriFieldTypeDouble, alias: Shape.STArea() )
• Shape.STLength() ( type: esriFieldTypeDouble, alias: Shape.STLength() )

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

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