Parent Layer: Flood Map For Planning

Name: Historic Flood Map

Display Field: FLOODEVENT

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: This data does not form part of the Flood Map, but is provided for use by Planning Authorities in conjunction with Flood Risk Standing Advice in deciding how to assess and respond to planning proposals in respect of flooding issues. Historic Flood Map is a GIS layer showing the maximum extent of all individual Recorded Flood Outlines from river, the sea and groundwater springs and shows areas of land that have previously been subject to flooding in England. Records began in 1946 when predecessor bodies to the Environment Agency started collecting detailed information about flooding incidents, although we may hold limited details about flooding incidents prior to this date. This dataset differs from the Recorded Flood Outline dataset in that it contains only those flood outlines that are 'considered and accepted' if the following criteria are met: o photographic/video evidence with the location referenced o recorded flood levels with the location referenced o evidence that the outline represents the time of peak water level (for example date / time stamped photo) o evidence that the source of flooding is from rivers, the sea or groundwater and not surface water/overland runoff. The absence of coverage by the Historic Flood Map for an area does not mean that the area has never flooded, only that we do not currently have records of flooding in this area. It is also possible that the pattern of flooding in this area has changed and that this area would now flood under different circumstances. The Historic Flood Map will take into account of the presence of defences, structures, and other infrastructure where they existed at the time of flooding. It will include flood extents that may have been affected by overtopping, breaches or blockages. Flooding shown to the land and does not necessarily indicate that properties were flooded internally. The Historic Flood Map consists of spatial data only.

Copyright Text: © Environment Agency copyright and/or database right 2025. All rights reserved

Default Visibility: false

MaxRecordCount: 2000

Supported Query Formats: JSON, geoJSON, PBF

Min Scale: 0.0

Max Scale: 0.0

Effective Min Scale: 100000

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: 421598.3200000003
YMin: 320052.2400000002
XMax: 497273.5290000001
YMax: 423884.02999999933
Spatial Reference: 27700  (27700)  LatestVCSWkid(0)

Drawing Info:

Renderer:
Simple Renderer:
Symbol:
Style: esriSFSSolid
Color: [204, 204, 204, 152]
Outline:
N/A
Label: N/A
Description: N/A
Transparency: 0
Labeling Info:

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: false
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 )
• UNIQUE_ID ( type: esriFieldTypeSmallInteger, alias: UNIQUE_ID )
• FLOODEVENT ( type: esriFieldTypeString, alias: FLOODEVENT, length: 50 )
• SHAPE ( type: esriFieldTypeGeometry, alias: SHAPE )
• SHAPE_Area ( type: esriFieldTypeDouble, alias: SHAPE.AREA )
• SHAPE_Length ( type: esriFieldTypeDouble, alias: SHAPE.LEN )

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

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