dataset · England
Flood Map for Planning – Surface Water Spatial Planning Depths – Present Day
The Flood Map for Planning Service includes several layers of information. This includes Surface Water Spatial Planning Depths. These datasets show the extent of land at risk of flooding from surface water to a defined depth band for a defined annual exceedance probability (AEP), or chance of flooding each year. These datasets include the following probability scenarios: ● 0.1% AEP (1 in 1000) ● 1% AEP (1 in 100) ● 3.3% AEP (1 in 30) And the following depth bands: ● Up to 150mm ● 150 – 300mm ● 3
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Licence: ["There are no public access constraints to this data. Use of this data is subject to the licence identified.", "There are no public access constraints to this data. Use of this data is subject to the
Evidence quality: 60.7
Listed in data.gov.uk public catalogue API on 2026-10-16; relevance/value screened (haiku).
Metadata checked: 2026-10-14T13:20:00.000Z
What's in it
- Data offered docs-verified
- surface water flood extent by depth band · surface water flood extent by annual exceedance probability (AEP) · AEP scenarios 0.1% (1 in 1000), 1% (1 in 100), 3.3% (1 in 30) · depth bands: up to 150mm, 150-300mm, 300-600mm, 600-900mm, 900-1200mm, 1200-2300mm, over 2300mm
- Coverage llm-inferred
- England · present day snapshot (current conditions, not a future climate scenario)
- Update frequency docs-verified
- quarterly
- Formats llm-inferred
- WMS · download (format not stated) · ArcGIS layer file (.lyrx) · PDF (product description)
- Access docs-verified
- free/open; no public access constraints; Open Government Licence v3.0
Useful for
- Use cases llm-inferred
- surface water flood screening for site-level flood risk assessments in England · drainage strategy constraint mapping using the 1% AEP depth bands · planning-stage surface water risk screening for development allocation sites · extreme-event screening using the 0.1% AEP layer
- Audience llm-inferred
- flood consultants · drainage engineers · hydrologists · planners · GIS analysts
Limitations
- Constraints docs-verified
- indicative only: shows flood risk to an area of land, not whether an individual property is at risk · not suitable for property-level flood checks · users must check suitability for their intended use
Evidence
- https://environment.data.gov.uk/api/file/download?fileDataSetId=19c68664-4516-4436-93c8-e2037d77c1d1&fileName=Surface Water Spatial Planning Product Description.pdf
- https://www.data.gov.uk/dataset/b0bbfacf-ccf7-4ed9-a94c-be18d91c258d/flood-map-for-planning-surface-water-spatial-planning-depths-present-day
Check upstream coverage, uncertainty and licence before use. Station observations are not forecasts or design levels.